Update samples

* Adds two models to the v2.0 spec, uses examples as defaults in python client

* Adds array default and type_holder_default and type_holder_example tests

* Re-generated python security client with ./bin/security/python-petstore.sh

* Changes comment text, rebased master

* Updates client + server samples

* Adds missing samples updates

* Changes python client to look for true or false with booleans in toDefaultValue

* Changes boolean casting to use Boolean.valueOf

* Adds deserialization fix for python tests

* Changes Mock to namedtuple in python deserialization tests

* Actually remove unittest.mock

.github/.test/auto-labeler.js

@@ -0,0 +1,117 @@
+let fs   = require('fs');
+let path = require('path');
+let util = require('util');
+let yaml = require('./js-yaml.js');
+let samples = require('./samples.json');
+
+class LabelMatch {
+    constructor (match, label) {
+        this.match = match;
+        this.label = label;
+    }
+}
+
+class FileError {
+    constructor (file, actualLabels, expectedLabels) {
+        this.file = file;
+        this.actual = actualLabels;
+        this.expected = expectedLabels;
+    }
+}
+
+class TextError {
+    constructor (text, actualLabels, expectedLabels) {
+        this.text = text;
+        this.actual = actualLabels;
+        this.expected = expectedLabels;
+    }
+}
+
+let labels = [];
+
+function labelsForFile(file) {
+    let body = fs.readFileSync(file);
+    return labelsForText(body)
+}
+
+function labelsForText(text) {
+    let addLabels = new Set();
+    let body = text;
+    for (const v of labels) {
+        if (v.match.test(body)) {
+            addLabels.add(v.label)
+        }
+        // reset regex state
+        v.match.lastIndex = 0
+    }
+    return addLabels;
+}
+
+try {
+    let config = yaml.safeLoad(fs.readFileSync('../auto-labeler.yml', 'utf8'));
+
+    if (config && config.labels && Object.keys(config.labels).length > 0) {
+        for (const labelName in config.labels) {
+            if (config.labels.hasOwnProperty(labelName)) {
+                let matchAgainst = config.labels[labelName];
+                if (Array.isArray(matchAgainst)) {
+                    matchAgainst.forEach(regex => {
+                        // noinspection JSCheckFunctionSignatures
+                        labels.push(new LabelMatch(new RegExp(regex, 'g'), labelName));
+                    })
+                }
+            }
+        }
+    }
+
+    if (labels.length === 0) {
+        // noinspection ExceptionCaughtLocallyJS
+        throw new Error("Expected to parse config.labels, but failed.")
+    }
+
+    let fileErrors = [];
+    samples.files.forEach(function(tester){
+        let file = path.normalize(path.join('..', '..', 'bin', tester.input));
+        let expectedLabels = new Set(tester.matches);
+        let actualLabels = labelsForFile(file);
+        let difference = new Set([...actualLabels].filter(x => !expectedLabels.has(x)));
+        if (difference.size > 0) {
+            fileErrors.push(new FileError(file, actualLabels, expectedLabels));
+        }
+    });
+
+    let textErrors = [];
+    samples.text.forEach(function(tester){
+        let expectedLabels = new Set(tester.matches);
+        let actualLabels = labelsForText(tester.input);
+        let difference = new Set([...actualLabels].filter(x => !expectedLabels.has(x)));
+        if (difference.size > 0) {
+            textErrors.push(new TextError(tester.input, actualLabels, expectedLabels));
+        }
+    });
+
+    // These are separate (file vs text) in case we want to preview where these would fail in the file. not priority at the moment.
+    if (fileErrors.length > 0) {
+        console.warn('There were %d file tester errors', fileErrors.length);
+        fileErrors.forEach(function(errs) {
+            console.log("file: %j\n  actual: %j\n  expected: %j", errs.file, util.inspect(errs.actual), util.inspect(errs.expected))
+        });
+    }
+
+    if (textErrors.length > 0) {
+        console.warn('There were %d text tester errors', textErrors.length);
+        textErrors.forEach(function(errs){
+            console.log("input: %j\n  actual: %j\n  expected: %j", errs.text, util.inspect(errs.actual), util.inspect(errs.expected))
+        })
+    }
+
+    let totalErrors = fileErrors.length + textErrors.length;
+    if (totalErrors === 0) {
+        console.log('Success!');
+    } else {
+        console.log('Failure: %d total errors', totalErrors);
+    }
+} catch (e) {
+    console.log(e);
+}
+

.github/ISSUE_TEMPLATE/announcement.md

@@ -0,0 +1,10 @@
+---
+name: Announcement
+about: Announcements related to the project
+title: "[Announcement] TITLE"
+labels: Announcement
+assignees: ''
+
+---
+
+

.github/ISSUE_TEMPLATE/bug_report.md

@@ -0,0 +1,62 @@
+---
+name: Bug report
+about: Create a bug report to help us improve
+title: "[BUG] Description"
+labels: 'Issue: Bug'
+assignees: ''
+
+---
+
+#### Bug Report Checklist
+
+- [ ] Have you provided a full/minimal spec to reproduce the issue?
+- [ ] What's the version of OpenAPI Generator used?
+- [ ] Have you search for related issues/PRs?
+- [ ] What's the actual output vs expected output?
+- [ ] [Optional] Bounty to sponsor the fix ([example](https://www.bountysource.com/issues/66123212-javascript-client-produces-a-wrong-object-for-a-string-enum-type-that-is-used-with-ref))
+
+<!--
+Please follow the issue template below for bug reports.
+Also please indicate in the issue title which language/library is concerned. Eg:  [BUG][JAVA] Bug generating foo with bar 
+-->
+
+##### Description
+
+<!-- describe what is the question, suggestion or issue and why this is a problem for you. -->
+
+##### openapi-generator version
+
+<!-- which version of openapi-generator are you using, is it a regression? -->
+
+##### OpenAPI declaration file content or url
+
+<!-- if it is a bug, a json or yaml that produces it.
+If you post the code inline, please wrap it with
+```yaml
+(here your code)
+```
+(for YAML code) or
+```json
+(here your code)
+```
+(for JSON code), so it becomes more readable. If it is longer than about ten lines,
+please create a Gist (https://gist.github.com) or upload it somewhere else and
+link it here.
+  -->
+
+##### Command line used for generation
+
+<!-- including the language, libraries and various options -->
+
+##### Steps to reproduce
+
+<!-- unambiguous set of steps to reproduce the bug.-->
+
+##### Related issues/PRs
+
+<!-- has a similar issue/PR been reported/opened before? Please do a search in https://github.com/openapitools/openapi-generator/issues?utf8=%E2%9C%93&q=is%3Aissue%20 -->
+
+##### Suggest a fix
+
+<!-- if you can't fix the bug yourself, perhaps you can point to what might be
+  causing the problem (line of code or commit), or simply make a suggestion -->

.github/ISSUE_TEMPLATE/feature_request.md

@@ -0,0 +1,24 @@
+---
+name: Feature request
+about: Suggest an idea for this project
+title: "[REQ] Feature Request Description"
+labels: 'Enhancement: Feature'
+assignees: ''
+
+---
+
+### Is your feature request related to a problem? Please describe.
+
+<!-- A clear and concise description of what the problem is. Ex. I'm always frustrated when [...] -->
+
+## Describe the solution you'd like
+
+<!-- A clear and concise description of what you want to happen. -->
+
+## Describe alternatives you've considered
+
+<!-- A clear and concise description of any alternative solutions or features you've considered. -->
+
+## Additional context
+
+<!-- Add any other context or screenshots about the feature request here. -->

.github/PULL_REQUEST_TEMPLATE.md

@@ -2,7 +2,7 @@
 
 - [ ] Read the [contribution guidelines](https://github.com/openapitools/openapi-generator/blob/master/CONTRIBUTING.md).
 - [ ] Ran the shell script under `./bin/` to update Petstore sample so that CIs can verify the change. (For instance, only need to run `./bin/{LANG}-petstore.sh` and `./bin/security/{LANG}-petstore.sh` if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in `.\bin\windows\`.
-- [ ] Filed the PR against the [correct branch](https://github.com/OpenAPITools/openapi-generator/wiki/Git-Branches): `master`, `3.4.x`, `4.0.x`. Default: `master`.
+- [ ] Filed the PR against the [correct branch](https://github.com/OpenAPITools/openapi-generator/wiki/Git-Branches): `master`~~, `3.4.x`, `4.0.x`~~. Default: `master`.
 - [ ] Copied the [technical committee](https://github.com/openapitools/openapi-generator/#62---openapi-generator-technical-committee) to review the pull request if your PR is targeting a particular programming language.
 
 ### Description of the PR

.github/auto-labeler.yml

@@ -0,0 +1,290 @@
+comment: |
+    👍 Thanks for opening this issue!
+    🏷 I have applied any labels matching special text in your issue.
+
+    The team will review the labels and make any necessary changes.
+labels:
+    'Announcement':
+      - '\s*?\[[Aa]nnouncement\]\s*?'
+    'Breaking change (with fallback)':
+      - '\s*?[bB]reaking [cC]hange [wW]ith [fF]allback\s*?'
+    'Breaking change (without fallback)':
+      - '\s*?[bB]reaking [cC]hange [wW]ithout [fF]allback\s*?'
+    'Client: Ada':
+      - '\s*?\[ada\]\s*?'
+      - '\s*?-[gl] ada(?!-)\b'
+    'Client: Android':
+      - '\s*?\[android\]\s*?'
+      - '\s*?-[gl] android(?!-)\b'
+    'Client: Apex':
+      - '\s*?\[apex\]\s*?'
+      - '\s*?-[gl] apex(?!-)\b'
+    'Client: Bash':
+      - '\s*?\[bash\]\s*?'
+      - '\s*?-[gl] bash(?!-)\b'
+    'Client: C':
+      - '\s*?\[[cC]\]\s*?'
+      - '\s*?-[gl] c(?!-)\b'
+    # 'Client: Ceylon':
+    'Client: C++':
+      - '\s*?\[cpp(-.*)?-client\]\s*?'
+      - '\s*?-[gl] cpp(-.*)?-client\s*?'
+      - '\s*?-[gl] cpp-restsdk(?!-)\b'
+      - '\s*?-[gl] cpp-tizen(?!-)\b'
+    'Client: C-Sharp':
+      - '\s*?-[gl] csharp(?!-)\b'
+      - '\s*?[cC]-[sS]harp [cC]lient\s*?'
+      - '\s*?-[gl] csharp-dotnet2\s*?'
+      - '\s*?-[gl] csharp-refactor?\s*?'
+      - '\s*?\[[Cc]#\]'
+      - '\s*?\[csharp\]\s*?'
+    'Client: Clojure':
+      - '\s*?\[clojure\]\s*?'
+      - '\s*?-[gl] clojure(?!-)\b'
+    # 'Client: Crystal':
+    'Client: Dart':
+      - '\s*?\[dart\]\s*?'
+      - '\s*?-[gl] dart(?!-)\b'
+    'Client: Dukescript':
+      - '\s*?\[dukescript\]\s*?'
+      - '\s*?-g dukescript\s*?'
+    'Client: Eiffel':
+      - '\s*?\[eiffel\]\s*?'
+      - '\s*?-[gl] eiffel(?!-)\b'
+    'Client: Elixir':
+      - '\s*?\[elixir\]\s*?'
+      - '\s*?-[gl] elixir(?!-)\b'
+    'Client: Elm':
+      - '\s*?\[elm\]\s*?'
+      - '\s*?-[gl] elm(?!-)\b'
+    'Client: Erlang':
+      - '\s*?\[erlang(-.*)?-client\]\s*?'
+      - '\s*?-[gl] erlang(-.*)?-client\s*?'
+      - '\s*?\[erlang-proper\]\s*?'
+      - '\s*?-[gl] erlang-proper\s*?'
+    'Client: Flash/ActionScript':
+      - '\s*?\[flash\]\s*?'
+      - '\s*?-[gl] flash(?!-)\b'
+    'Client: Go':
+      - '\s*?\[go\]\s*?'
+      - '\s*?-[gl] go(?!-)\b'
+    'Client: Groovy':
+      - '\s*?\[groovy\]\s*?'
+      - '\s*?-[gl] groovy(?!-)\b'
+    'Client: HTML':
+      - '\s*?\[html[2]?\]\s*?'
+      - '\s*?-[gl] html[2]?\s*?'
+    'Client: Haskell':
+      - '\s*?\[haskell(-.*)?-client\]\s*?'
+      - '\s*?-[gl] haskell(-.*)?-client\s*?'
+    'Client: JMeter':
+      - '\s*?\[jmeter\]\s*?'
+      - '\s*?-[gl] jmeter\s*?'
+    'Client: Java':
+      - '\s*?\[java\]\s*?'
+      - '\s*?-[gl] java(?!-)\b'
+    'Client: JavaScript/Node.js':
+      - '\s*?\[javascript\]\s*?'
+      - '\s*?-[gl] javascript\s*?'
+      - '\s*?-[gl] javascript-(\S)*\s*?'
+    # 'Client: Julia': # NOTE: Not yet implemented
+    'Client: Kotlin':
+      - '\s*?\[kotlin\]\s*?'
+      - '\s*?-[gl] kotlin(?!-)\b'
+    'Client: Lisp':
+      - '\s*?\[lisp\]\s*?'
+      - '\s*?-[gl] lisp(?!-)\b'
+    'Client: Lua':
+      - '\s*?\[lua\]\s*?'
+      - '\s*?-[gl] lua(?!-)\b'
+    'Client: Objc':
+      - '\s*?\[objc\]\s*?'
+      - '\s*?-[gl] objc\s*?'
+    # 'Client: OCaml':
+    'Client: Perl':
+      - '\s*?\[perl\]\s*?'
+      - '\s*?-[gl] perl(?!-)\b'
+    # 'Client: PHP':
+    'Client: PowerShell':
+      - '\s*?\[powershell\]\s*?'
+      - '\s*?-[gl] powershell\s*?'
+    'Client: Python':
+      - '\s*?\[python\]\s*?'
+      - '\s*?-[gl] python(?!-)\b'
+    'Client: QT':
+      - '\s*?\[cpp-qt5-client\]\s*?'
+      - '\s*?-[gl] cpp-qt5-client\s*?'
+    'Client: R':
+      - '\s*?\[[rR]\]\s*?'
+      - '\s*?-[gl] r(?!-)\b'
+    'Client: Reason ML':
+      - '\s*?\[reasonml\]\s*?'
+      - '\s*?-[g] reasonml\s*?'
+    'Client: Retrofit':
+      - '\s*?retrofit.*?\s*?'
+    'Client: Ruby':
+      - '\s*?\[ruby\]\s*?'
+      - '\s*?-[gl] ruby(?!-)\b'
+    'Client: Rust':
+      - '\s*?\[rust\]\s*?'
+      - '\s*?-[gl] rust(?!-)\b'
+    'Client: Scala':
+      - '\s*?\[scalaz\]\s*?'
+      - '\s*?-[gl] scalaz\s*?'
+      - '\s*?\[scala-(?!finch)[a-z]+\]\b'
+      - '\s*?-[gl] scala-(?!finch)[a-z]+?(?!-)\b'
+    'Client: Swift':
+      - '\s*?\[swift[34]+\]\s*?'
+      - '\s*?-[gl] swift[34]+\s*?'
+      - '\s*?-[gl] swift2-deprecated\s*?'
+    'Client: TypeScript':
+      - '\s*?\[typescript-[\-a-z]+\]\s*?'
+      - '\s*?-[gl] typescript-[\-a-z]+\s*?'
+    # 'Client: VB/VB.net': # NOTE: Not yet implemented
+    # 'Client: Visual Basic': # TODO: REMOVE UNUSED LABEL
+    'Config: Apache':
+      - '\s*?\[apache2\]\s*?'
+      - '\s*?-[gl] apache2\s*?'
+    'Docker':
+      - '\s*?\[docker\]\s*?'
+    'Documentation: Cwiki':
+      - '\s*?\[cwiki\]\s*?'
+      - '\s*?-[gl] cwiki\s*?'
+    'Documentation: Dynamic HTML':
+      - '\s*?\[dynamic-html\]\s*?'
+      - '\s*?-[gl] dynamic-html\s*?'
+    'Enhancement: CI/Test':
+      - '\s*?\[ci\]\s*?'
+    'Enhancement: Code format':
+      - '\s*?\[format(ting)?\]\s*?'
+    # 'Enhancement: Compatibility':
+    'Enhancement: Feature':
+      - '\s*?\[feat(ure)?s*?'
+    'Enhancement: General':
+      - '\s*?\[general\]\s*?'
+      - '\s*?\[core\]\s*?'
+    # 'Enhancement: New generator':
+    'Enhancement: Performance':
+      - '\s*?\[perf\]\s*?'
+    # 'Feature List: API clients':
+    # 'Feature List: API documentations':
+    # 'Feature List: API servers':
+    # 'Feature: Authentication':
+    # 'Feature: Composition / Inheritance':
+    # 'Feature: Documentation':
+    # 'Feature: Enum':
+    # 'Feature: Generator':
+    'Feature: OAS 3.0 spec support':
+      - '\s*?\[oas3[\.0]?\]\s*?'
+    # 'General: Awaiting feedback':
+    'General: Discussion':
+      - '\s*?\[discussion\]\s*?'
+    'General: Question':
+      - '\s*?\[question\]\s*?'
+    'General: Suggestion':
+      - '\s*?\[suggestion\]\s*?'
+    'General: Support':
+      - '\s*?\[support\]\s*?'
+    'Issue: Bug':
+      - '\s*?\[bug(s)?\]\s*?'
+      - '\s*?\[fix(es)?\]\s*?'
+    # 'Issue: Invalid spec':
+    # 'Issue: Migration':
+    # 'Issue: Non-operational':
+    # 'Issue: Platform':
+    # 'Issue: Regression':
+    'Issue: Security':
+      - '\s*?\[security\]\s*?'
+    # 'Issue: Unable to reproduce':
+    # 'Issue: Undo changes':
+    # 'Issue: Usage/Installation':
+    # 'Issue: Workaround available':
+    'OpenAPI Generator CLI':
+      - '\s*?\[cli\]\s*?'
+    'OpenAPI Generator Gradle Plugin':
+      - '\s*?\[gradle\]\s*?'
+    'OpenAPI Generator Maven Plugin':
+      - '\s*?\[maven\]\s*?'
+    'OpenAPI Generator Online':
+      - '\s*?\[online\]\s*?'
+    'Schema: MySQL':
+      - '\s*?\[mysql\]\s*?'
+      - '\s*?-[gl] mysql\s*?'
+    'Schema: GraphQL':
+      - '\s*?\[graphql-schema\]\s*?'
+      - '\s*?-[gl] graphql-schema\s*?'
+    'Server: Ada':
+      - '\s*?\[ada(-.*)?-server\]\s*?'
+      - '\s*?-[gl] ada(-.*)?-server\s*?'
+    'Server: C++':
+      - '\s*?\[cpp(-.*)?-server\]\s*?'
+      - '\s*?-[gl] cpp(-.*)?-server\s*?'
+    'Server: C-Sharp':
+      - '\s*?\[aspnetcore\]\s*?'
+      - '\s*?-[gl] aspnetcore\s*?'
+      - '\s*?\[csharp-nancyfx\]\s*?'
+      - '\s*?-[gl] csharp-nancyfx\s*?'
+    # 'Server: Ceylon': # TODO: REMOVE UNUSED LABEL
+    'Server: Eiffel':
+      - '\s*?\[eiffel(-.*)?-server\]\s*?'
+      - '\s*?-[gl] eiffel(-.*)?-server\s*?'
+    'Server: Elixir':
+      - '\s*?\[elixir(-.*)?-server\]\s*?'
+      - '\s*?-[gl] elixir(-.*)?-server\s*?'
+    'Server: Erlang':
+      - '\s*?\[erlang-server\]\s*?'
+      - '\s*?-[gl] erlang-server\s*?'
+    'Server: Go':
+      - '\s*?\[go(-.*)?-server\]\s*?'
+      - '\s*?-[gl] go(-.*)?-server\s*?'
+    'Server: GraphQL':
+      - '\s*?\[graphql(-.*)?-server\]\s*?'
+      - '\s*?-[gl] graphql(-.*)?-server\s*?'
+    'Server: Haskell':
+      - '\s*?\[haskell]\s*?'
+      - '\s*?-[gl] haskell(?!-)\b'
+    'Server: Java':
+      - '\s*?\[java-.*?\]\s*?'
+      - '\s*?-[gl] java-.*?\s*?'
+      - '\s*?-[gl] jaxrx-.*?\s*?'
+    'Server: Kotlin':
+      - '\s*?\[ktor]\s*?'
+      - '\s*?\[kotlin-spring]\s*?'
+      - '\s*?\[kotlin(-.*)?-server\]\s*?'
+      - '\s*?-[gl] kotlin(-.*)?-server\s*?'
+      - '\s*?-[gl] kotlin-spring\s*?'
+    'Server: Nodejs':
+      - '\s*?\[nodejs(-.*)?-server\]\s*?'
+      - '\s*?-[gl] nodejs(-.*)?-server\s*?'
+    'Server: PHP':
+      - '\s*?\[php-.*?\]\s*?'
+      - '\s*?-[gl] php-.*?\s*?'
+    'Server: Perl':
+      - '\s*?\[perl(-.*)?-server\]\s*?'
+      - '\s*?-g perl(-.*)?-server\s*?'
+    'Server: Python':
+      - '\s*?\[python-.*?\]\s*?'
+      - '\s*?-[gl] python-.*?\s*?'
+    'Server: Ruby':
+      - '\s*?\[ruby-.*?\]\s*?'
+      - '\s*?-[gl] ruby-.*?\s*?'
+    'Server: Rust':
+      - '\s*?\[rust(-.*)?-server\]\s*?'
+      - '\s*?-[gl] rust(-.*)?-server\s*?'
+    'Server: Scala':
+      - '\s*?\[scala(-.*)?-server\]\s*?'
+      - '\s*?-[gl] scala(-.*)?-server\s*?'
+      - '\s*?\[scalatra\]\s*?'
+      - '\s*?-[gl] scalatra\s*?'
+      - '\s*?\[scala-finch\]\s*?'
+      - '\s*?-[gl] scala-finch\s*?'
+    'Server: Spring':
+      - '\s*?\[spring\]\s*?'
+      - '\s*?-[g] spring\s*?'
+    # 'Swagger-Parser':
+    'WIP':
+      - '\s*?\[wip\]\s*?'
+      - '\s*?\[WIP\]\s*?'
+      - '\bWIP:.*?'
+    'help wanted':
+      - '\s*?\[help wanted\]\s*?'

.gitignore

@@ -27,6 +27,7 @@ packages/
 .packages
 .vagrant/
 .vscode/
+**/.vs
 
 .settings
 
@@ -128,7 +129,6 @@ samples/client/petstore/swift3/**/SwaggerClientTests/Podfile.lock
 # C#
 *.csproj.user
 samples/client/petstore/csharp/SwaggerClient/IO.Swagger.userprefs
-samples/client/petstore/csharp/SwaggerClientTest/.vs
 samples/client/petstore/csharp/SwaggerClientTest/obj
 samples/client/petstore/csharp/SwaggerClientTest/bin
 samples/client/petstore/csharp/SwaggerClientTest/packages
@@ -146,6 +146,8 @@ samples/client/petstore/csharp/SwaggerClient/bin/Debug/
 samples/client/petstore/csharp/SwaggerClient/packages
 samples/client/petstore/csharp/SwaggerClient/TestResult.xml
 samples/client/petstore/csharp/SwaggerClientWithPropertyChanged/IO.Swagger.userprefs
+samples/client/petstore/csharp-refactor/OpenAPIClient/TestResult.xml
+samples/client/petstore/csharp-refactor/OpenAPIClient/nuget.exe
 
 # Python
 *.pyc
@@ -178,12 +180,16 @@ samples/client/petstore/kotlin/src/main/kotlin/test/
 samples/client/petstore/kotlin-threetenbp/build
 samples/client/petstore/kotlin-string/build
 samples/server/petstore/kotlin-server/ktor/build
+samples/openapi3/client/petstore/kotlin/build
 \?
 
 # haskell
 .stack-work
 .cabal-sandbox
 cabal.project.local
+samples/client/petstore/haskell-http-client/docs/haddock-bundle.min.js
+samples/client/petstore/haskell-http-client/docs/meta.json
+samples/client/petstore/haskell-http-client/docs/quick-jump.css
 
 # R
 .Rproj.user
@@ -199,6 +205,8 @@ samples/client/petstore/groovy/build
 # erlang
 samples/client/petstore/erlang-client/_build/
 samples/client/petstore/erlang-client/rebar.lock
+samples/client/petstore/erlang-proper/_build/
+samples/client/petstore/erlang-proper/rebar.lock
 samples/server/petstore/erlang-server/_build/
 samples/server/petstore/erlang-server/rebar.lock
 
@@ -212,3 +220,7 @@ samples/client/petstore/javascript/package-lock.json
 
 # elm
 samples/client/petstore/elm/index.html
+
+# C
+samples/client/petstore/c/build
+samples/client/petstore/c/*.so

.travis.yml

@@ -51,9 +51,9 @@ addons:
 
 before_install:
   # install haskell
-  #- curl -sSL https://get.haskellstack.org/ | sh
-  #- stack upgrade
-  #- stack --version
+  - curl -sSL https://get.haskellstack.org/ | sh
+  - stack upgrade
+  - stack --version
   # install rust
   - curl https://sh.rustup.rs -sSf | sh -s -- -y -v
   # required when sudo: required for the Ruby petstore tests
@@ -80,6 +80,9 @@ before_install:
   #- sudo sh -c 'curl https://storage.googleapis.com/download.dartlang.org/linux/debian/dart_stable.list > /etc/apt/sources.list.d/dart_stable.list'
   #- sudo apt-get update
   #- sudo apt-get install dart
+  # switch to php7
+  - phpenv global 7.1
+  - php -v
   # install perl module
   #- cpanm --local-lib=~/perl5 local::lib && eval $(perl -I ~/perl5/lib/perl5/ -Mlocal::lib)
   #- cpanm Test::Exception Test::More Log::Any LWP::UserAgent JSON URI:Query Module::Runtime DateTime Module::Find Moose::Role

CI/circle_parallel.sh

@@ -15,7 +15,7 @@ elif [ "$NODE_INDEX" = "2" ]; then
   java -version
   #export GO_POST_PROCESS_FILE="/usr/local/bin/gofmt -w"
   # not formatting the code as different go versions may format the code a bit different
-  #./bin/utils/ensure-up-to-date
+  ./bin/utils/ensure-up-to-date
 else
   echo "Running node $NODE_INDEX to test 'samples.circleci.jdk7' defined in pom.xml ..."
   sudo update-java-alternatives -s java-1.7.0-openjdk-amd64

CI/samples.ci/client/petstore/csharp-refactor/OpenAPIClient/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj

@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+OpenAPI Petstore
+
+This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+
+OpenAPI spec version: 1.0.0
+
+-->
+<Project ToolsVersion="12.0" DefaultTargets="Build" xmlns="http://schemas.microsoft.com/developer/msbuild/2003">
+  <PropertyGroup>
+    <Configuration Condition=" '$(Configuration)' == '' ">Debug</Configuration>
+    <Platform Condition=" '$(Platform)' == '' ">AnyCPU</Platform>
+    <ProjectGuid>{19F1DEBC-DE5E-4517-8062-F000CD499087}</ProjectGuid>
+    <OutputType>Library</OutputType>
+    <AppDesignerFolder>Properties</AppDesignerFolder>
+    <RootNamespace>Org.OpenAPITools.Test</RootNamespace>
+    <AssemblyName>Org.OpenAPITools.Test</AssemblyName>
+    <TargetFrameworkVersion>v4.5.2</TargetFrameworkVersion>
+    <FileAlignment>512</FileAlignment>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Debug|AnyCPU' ">
+    <DebugSymbols>true</DebugSymbols>
+    <DebugType>full</DebugType>
+    <Optimize>false</Optimize>
+    <OutputPath>bin\Debug\</OutputPath>
+    <DefineConstants>DEBUG;TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <PropertyGroup Condition=" '$(Configuration)|$(Platform)' == 'Release|AnyCPU' ">
+    <DebugType>pdbonly</DebugType>
+    <Optimize>true</Optimize>
+    <OutputPath>bin\Release\</OutputPath>
+    <DefineConstants>TRACE</DefineConstants>
+    <ErrorReport>prompt</ErrorReport>
+    <WarningLevel>4</WarningLevel>
+  </PropertyGroup>
+  <ItemGroup>
+    <Reference Include="System" />
+    <Reference Include="System.Core" />
+    <Reference Include="System.Xml.Linq" />
+    <Reference Include="System.Data.DataSetExtensions" />
+    <Reference Include="System.ComponentModel.DataAnnotations" />
+    <Reference Include="Microsoft.CSharp" />
+    <Reference Include="System.Data" />
+    <Reference Include="System.Runtime.Serialization" />
+    <Reference Include="System.Xml" />
+    <Reference Include="Newtonsoft.Json">
+        <HintPath Condition="Exists('$(SolutionDir)\packages')">$(SolutionDir)\packages\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+        <HintPath Condition="Exists('..\packages')">..\packages\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+        <HintPath Condition="Exists('..\..\packages')">..\..\packages\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+        <HintPath Condition="Exists('..\..\vendor')">..\..\vendor\Newtonsoft.Json.12.0.1\lib\net45\Newtonsoft.Json.dll</HintPath>
+    </Reference>
+    <Reference Include="JsonSubTypes">
+        <HintPath Condition="Exists('$(SolutionDir)\packages')">$(SolutionDir)\packages\JsonSubTypes.1.5.1\lib\net45\JsonSubTypes.dll</HintPath>
+        <HintPath Condition="Exists('..\packages')">..\packages\JsonSubTypes.1.5.1\lib\net45\JsonSubTypes.dll</HintPath>
+        <HintPath Condition="Exists('..\..\packages')">..\..\packages\JsonSubTypes.1.5.1\lib\net45\JsonSubTypes.dll</HintPath>
+        <HintPath Condition="Exists('..\..\vendor')">..\..\vendor\JsonSubTypes.1.5.1\lib\net45\JsonSubTypes.dll</HintPath>
+    </Reference>
+    <Reference Include="RestSharp">
+        <HintPath Condition="Exists('$(SolutionDir)\packages')">$(SolutionDir)\packages\RestSharp.106.5.4\lib\net452\RestSharp.dll</HintPath>
+        <HintPath Condition="Exists('..\packages')">..\packages\RestSharp.106.5.4\lib\net452\RestSharp.dll</HintPath>
+        <HintPath Condition="Exists('..\..\packages')">..\..\packages\RestSharp.106.5.4\lib\net452\RestSharp.dll</HintPath>
+        <HintPath Condition="Exists('..\..\vendor')">..\..\vendor\RestSharp.106.5.4\lib\net452\RestSharp.dll</HintPath>
+    </Reference>
+    <Reference Include="nunit.framework">
+        <HintPath Condition="Exists('$(SolutionDir)\packages')">$(SolutionDir)\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+        <HintPath Condition="Exists('..\packages')">..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+        <HintPath Condition="Exists('..\..\packages')">..\..\packages\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+        <HintPath Condition="Exists('..\..\vendor')">..\..\vendor\NUnit.2.6.4\lib\nunit.framework.dll</HintPath>
+    </Reference>
+  </ItemGroup>
+  <ItemGroup>
+    <Compile Include="**\*.cs" Exclude="obj\**" />
+  </ItemGroup>
+  <ItemGroup>
+      <None Include="packages.config" />
+  </ItemGroup>
+  <Import Project="$(MsBuildToolsPath)\Microsoft.CSharp.targets" />
+  <ItemGroup>
+      <ProjectReference Include="..\Org.OpenAPITools\Org.OpenAPITools.csproj">
+          <Project>{321C8C3F-0156-40C1-AE42-D59761FB9B6C}</Project>
+          <Name>Org.OpenAPITools</Name>
+      </ProjectReference>
+  </ItemGroup>
+  <ItemGroup>
+    <EmbeddedResource Include="linux-logo.png" />
+  </ItemGroup>
+</Project>
+

CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/model/ArrayOfArrayOfNumberOnlyTest.java

@@ -0,0 +1,70 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import org.apache.commons.lang3.builder.EqualsBuilder;
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.ArrayList;
+import java.util.List;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+/**
+ * Model tests for ArrayOfArrayOfNumberOnly
+ */
+public class ArrayOfArrayOfNumberOnlyTest {
+    private final ArrayOfArrayOfNumberOnly model = new ArrayOfArrayOfNumberOnly();
+
+    /**
+     * Model tests for ArrayOfArrayOfNumberOnly
+     */
+    @Test
+    public void test() {
+        // TODO: test ArrayOfArrayOfNumberOnly
+    }
+
+    /**
+     * Test the property 'arrayArrayNumber'
+     */
+    @Test
+    public void arrayArrayNumberTest() {
+        BigDecimal b1 = new BigDecimal("12.3");
+        BigDecimal b2 = new BigDecimal("5.6");
+        List<BigDecimal> arrayArrayNumber = new ArrayList<BigDecimal>();
+        arrayArrayNumber.add(b1);
+        arrayArrayNumber.add(b2);
+        model.getArrayArrayNumber().add(arrayArrayNumber);
+
+        // create another instance for comparison
+        BigDecimal b3 = new BigDecimal("12.3");
+        BigDecimal b4 = new BigDecimal("5.6");
+        ArrayOfArrayOfNumberOnly model2 = new ArrayOfArrayOfNumberOnly();
+        List<BigDecimal> arrayArrayNumber2 = new ArrayList<BigDecimal>();
+        arrayArrayNumber2.add(b1);
+        arrayArrayNumber2.add(b2);
+        model2.getArrayArrayNumber().add(arrayArrayNumber2);
+
+        Assert.assertTrue(model2.equals(model));
+    }
+
+}

CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/model/PetTest.java

@@ -0,0 +1,103 @@
+/*
+ * OpenAPI Petstore
+ * This spec is mainly for testing Petstore server and contains fake endpoints, models. Please do not use this for any other purpose. Special characters: \" \\
+ *
+ * OpenAPI spec version: 1.0.0
+ * 
+ *
+ * NOTE: This class is auto generated by OpenAPI Generator (https://openapi-generator.tech).
+ * https://openapi-generator.tech
+ * Do not edit the class manually.
+ */
+
+
+package org.openapitools.client.model;
+
+import com.google.gson.TypeAdapter;
+import com.google.gson.annotations.JsonAdapter;
+import com.google.gson.annotations.SerializedName;
+import com.google.gson.stream.JsonReader;
+import com.google.gson.stream.JsonWriter;
+import io.swagger.annotations.ApiModel;
+import io.swagger.annotations.ApiModelProperty;
+import java.io.IOException;
+import java.util.ArrayList;
+import java.util.List;
+import org.openapitools.client.model.Category;
+import org.openapitools.client.model.Tag;
+import org.junit.Assert;
+import org.junit.Ignore;
+import org.junit.Test;
+
+
+/**
+ * Model tests for Pet
+ */
+public class PetTest {
+    private final Pet model = new Pet();
+
+    /**
+     * Model tests for Pet
+     */
+    @Test
+    public void testPet() {
+        // test Pet
+        model.setId(1029L);
+        model.setName("Dog");
+
+        Pet model2 = new Pet();
+        model2.setId(1029L);
+        model2.setName("Dog");
+
+        Assert.assertTrue(model.equals(model2));
+    }
+
+    /**
+     * Test the property 'id'
+     */
+    @Test
+    public void idTest() {
+        // TODO: test id
+    }
+
+    /**
+     * Test the property 'category'
+     */
+    @Test
+    public void categoryTest() {
+        // TODO: test category
+    }
+
+    /**
+     * Test the property 'name'
+     */
+    @Test
+    public void nameTest() {
+        // TODO: test name
+    }
+
+    /**
+     * Test the property 'photoUrls'
+     */
+    @Test
+    public void photoUrlsTest() {
+        // TODO: test photoUrls
+    }
+
+    /**
+     * Test the property 'tags'
+     */
+    @Test
+    public void tagsTest() {
+        // TODO: test tags
+    }
+
+    /**
+     * Test the property 'status'
+     */
+    @Test
+    public void statusTest() {
+        // TODO: test status
+    }
+
+}

CI/samples.ci/client/petstore/typescript-fetch/builds/default/pom.xml

@@ -0,0 +1,26 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>TypeScriptAngularBuildPestoreClientTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>TS Fetch Default Petstore Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

CI/samples.ci/client/petstore/typescript-fetch/builds/es6-target/pom.xml

@@ -0,0 +1,59 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>TypeScriptAngularBuildES6PestoreClientTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>TS Fetch ES6 Petstore Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>npm-install</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>install</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>npm-test</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>test</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

CI/samples.ci/client/petstore/typescript-fetch/builds/with-npm-version/pom.xml

@@ -0,0 +1,73 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>TypeScriptAngularBuildWithNPMVersionPestoreClientTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>TS Fetch Petstore Client (with npm)</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>npm-install</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>install</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>npm-build</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>run</argument>
+                                <argument>build</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>npm-test</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>test</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

CI/samples.ci/client/petstore/typescript-fetch/tests/default/pom.xml

@@ -0,0 +1,59 @@
+<project>
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.openapitools</groupId>
+    <artifactId>TypeScriptFetchPestoreClientTests</artifactId>
+    <packaging>pom</packaging>
+    <version>1.0-SNAPSHOT</version>
+    <name>TS Fetch Petstore Test Client</name>
+    <build>
+        <plugins>
+            <plugin>
+                <artifactId>maven-dependency-plugin</artifactId>
+                <executions>
+                    <execution>
+                        <phase>package</phase>
+                        <goals>
+                            <goal>copy-dependencies</goal>
+                        </goals>
+                        <configuration>
+                            <outputDirectory>${project.build.directory}</outputDirectory>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>exec-maven-plugin</artifactId>
+                <version>1.2.1</version>
+                <executions>
+                    <execution>
+                        <id>npm-install</id>
+                        <phase>pre-integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>install</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                    <execution>
+                        <id>npm-test</id>
+                        <phase>integration-test</phase>
+                        <goals>
+                            <goal>exec</goal>
+                        </goals>
+                        <configuration>
+                            <executable>npm</executable>
+                            <arguments>
+                                <argument>test</argument>
+                            </arguments>
+                        </configuration>
+                    </execution>
+                </executions>
+            </plugin>
+        </plugins>
+    </build>
+</project>

CI/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools.Test/obj/Debug/Org.OpenAPITools.Test.csproj.CoreCompileInputs.cache

@@ -0,0 +1 @@
+c2fcc2ae9693a8e8d02b25e286844aad88188fcb

README.md

@@ -2,15 +2,11 @@
 
 <div align="center">
 
-[Master](https://github.com/OpenAPITools/openapi-generator/tree/master) (`3.3.4`): [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/master.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
+[Master](https://github.com/OpenAPITools/openapi-generator/tree/master) (`4.0.0`): [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/master.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
 [![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
 [![Run Status](https://api.shippable.com/projects/5af6bf74e790f4070084a115/badge?branch=master)](https://app.shippable.com/github/OpenAPITools/openapi-generator)
 [![Windows Test](https://ci.appveyor.com/api/projects/status/github/openapitools/openapi-generator?branch=master&svg=true&passingText=Windows%20Test%20-%20OK&failingText=Windows%20Test%20-%20Fails)](https://ci.appveyor.com/project/WilliamCheng/openapi-generator-wh2wu)
 
-[`4.0.x`](https://github.com/OpenAPITools/openapi-generator/tree/4.0.x) branch: [![Build Status](https://img.shields.io/travis/OpenAPITools/openapi-generator/4.0.x.svg?label=Integration%20Test)](https://travis-ci.org/OpenAPITools/openapi-generator)
-[![Integration Test2](https://circleci.com/gh/OpenAPITools/openapi-generator/tree/4.0.x.svg?style=shield)](https://circleci.com/gh/OpenAPITools/openapi-generator)
-[![Run Status](https://api.shippable.com/projects/5af6bf74e790f4070084a115/badge?branch=4.0.x)](https://app.shippable.com/github/OpenAPITools/openapi-generator)
-[![Windows Test](https://ci.appveyor.com/api/projects/status/github/openapitools/openapi-generator?branch=4.0.x&svg=true&passingText=Windows%20Test%20-%20OK&failingText=Windows%20Test%20-%20Fails)](https://ci.appveyor.com/project/WilliamCheng/openapi-generator-wh2wu)
 </div>
 
 <div align="center">
@@ -31,7 +27,7 @@
 
 :notebook_with_decorative_cover: The eBook [A Beginner's Guide to Code Generation for REST APIs](https://gumroad.com/l/swagger_codegen_beginner) is a good starting point for beginners :notebook_with_decorative_cover:
 
-:warning: If the OpenAPI spec, templates or any input (e.g. options, envirionment variables) is obtained from an untrusted source or environment, please make sure you've reviewed these inputs before using OpenAPI Generator to generate the API client, server stub or documentation to avoid potential security issues (e.g. [code injection](https://en.wikipedia.org/wiki/Code_injection)) :warning:
+:warning: If the OpenAPI spec, templates or any input (e.g. options, environment variables) is obtained from an untrusted source or environment, please make sure you've reviewed these inputs before using OpenAPI Generator to generate the API client, server stub or documentation to avoid potential security issues (e.g. [code injection](https://en.wikipedia.org/wiki/Code_injection)) :warning:
 
 :bangbang: Both "OpenAPI Tools" (https://OpenAPITools.org - the parent organization of OpenAPI Generator) and "OpenAPI Generator" are not affiliated with OpenAPI Initiative (OAI) :bangbang:
 
@@ -46,7 +42,7 @@ OpenAPI Generator allows generation of API client libraries (SDK generation), se
 **Server stubs**                 | **Ada**, **C#** (ASP.NET Core, NancyFx), **C++** (Pistache, Restbed), **Erlang**, **Go** (net/http, Gin), **Haskell** (Servant), **Java** (MSF4J, Spring, Undertow, JAX-RS: CDI, CXF, Inflector, RestEasy, Play Framework, [PKMST](https://github.com/ProKarma-Inc/pkmst-getting-started-examples)), **Kotlin** (Spring Boot), **PHP** (Laravel, Lumen, Slim, Silex, [Symfony](https://symfony.com/), [Zend Expressive](https://github.com/zendframework/zend-expressive)), **Python** (Flask), **NodeJS**, **Ruby** (Sinatra, Rails5), **Rust** (rust-server), **Scala** ([Finch](https://github.com/finagle/finch), [Lagom](https://github.com/lagom/lagom), Scalatra)
 **API documentation generators** | **HTML**, **Confluence Wiki**
 **Configuration files**          | [**Apache2**](https://httpd.apache.org/)
-**Others**                       | **JMeter**, **MySQL Schema**
+**Others**                       | **GraphQL**, **JMeter**, **MySQL Schema**
 
 ## Table of contents
 
@@ -83,7 +79,7 @@ The OpenAPI Specification has undergone 3 revisions since initial creation in 20
 
 OpenAPI Generator Version    | Release Date | Notes
 ---------------------------- | ------------ | -----
-4.0.0 (upcoming major release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/4.0.0-SNAPSHOT/)| 20.12.2018 | Major release with breaking changes (with or without fallback)
+4.0.0 (upcoming release) [SNAPSHOT](https://oss.sonatype.org/content/repositories/snapshots/org/openapitools/openapi-generator-cli/4.0.0-SNAPSHOT/)| 20.12.2018 | Major release with breaking changes (with or without fallback)
 [3.3.4](https://github.com/OpenAPITools/openapi-generator/releases/tag/v3.3.4) (latest stable release) | 30.11.2018 | Bugfix release
 
 OpenAPI Spec compatibility: 1.0, 1.1, 1.2, 2.0, 3.0
@@ -429,7 +425,6 @@ SYNOPSIS
                 [--import-mappings <import mappings>...]
                 [--instantiation-types <instantiation types>...]
                 [--invoker-package <invoker package>]
-                [(-l <language> | --lang <language>)]
                 [--language-specific-primitives <language specific primitives>...]
                 [--library <library>] [--log-to-stderr]
                 [--model-name-prefix <model name prefix>]
@@ -505,16 +500,20 @@ When code is generated from this project, it shall be considered **AS IS** and o
 Here are some companies/projects (alphabetical order) using OpenAPI Generator in production. To add your company/project to the list, please visit [README.md](README.md) and click on the icon to edit the page.
 
 - [Angular.Schule](https://angular.schule/)
+- [ASKUL](https://www.askul.co.jp)
 - [b<>com](https://b-com.com/en)
 - [Bithost GmbH](https://www.bithost.ch)
 - [Boxever](https://www.boxever.com/)
+- [GenFlow](https://github.com/RepreZen/GenFlow)
 - [GMO Pepabo](https://pepabo.com/en/)
 - [JustStar](https://www.juststarinfo.com)
 - [Klarna](https://www.klarna.com/)
+- [Metaswitch](https://www.metaswitch.com/)
 - [Myworkout](https://myworkout.com)
 - [Raiffeisen Schweiz Genossenschaft](https://www.raiffeisen.ch)
 - [RepreZen API Studio](https://www.reprezen.com/swagger-openapi-code-generation-api-first-microservices-enterprise-development)
 - [REST United](https://restunited.com)
+- [Stingray](http://www.stingray.com)
 - [Suva](https://www.suva.ch/)
 - [Telstra](https://dev.telstra.com)
 - [TUI InfoTec GmbH](http://www.tui-infotec.com/)
@@ -531,9 +530,12 @@ Here are some companies/projects (alphabetical order) using OpenAPI Generator in
 - 2018/06/27 - [Lessons Learned from Leading an Open-Source Project Supporting 30+ Programming Languages](https://speakerdeck.com/wing328/lessons-learned-from-leading-an-open-source-project-supporting-30-plus-programming-languages) - [William Cheng](https://github.com/wing328) at [LinuxCon + ContainerCon + CloudOpen China 2018](http://bit.ly/2waDKKX)
 - 2018/07/19 - [OpenAPI Generator Contribution Quickstart - RingCentral Go SDK](https://medium.com/ringcentral-developers/openapi-generator-for-go-contribution-quickstart-8cc72bf37b53) by [John Wang](https://github.com/grokify)
 - 2018/08/22 - [OpenAPI Generatorのプロジェクト構成などのメモ](https://yinm.info/20180822/) by [Yusuke Iinuma](https://github.com/yinm)
+- 2018/09/12 - [RepreZen and OpenAPI 3.0: Now is the Time](https://www.reprezen.com/blog/reprezen-openapi-3.0-upgrade-now-is-the-time) by [Miles Daffin](https://www.reprezen.com/blog/author/miles-daffin)
 - 2018/10/31 - [A node package wrapper for openapi-generator](https://github.com/HarmoWatch/openapi-generator-cli)
 - 2018/11/03 - [OpenAPI Generator + golang + Flutter でアプリ開発](http://ryuichi111std.hatenablog.com/entry/2018/11/03/214005) by [Ryuichi Daigo](https://github.com/ryuichi111)
 - 2018/11/19 - [OpenAPIs are everywhere](https://youtu.be/-lDot4Yn7Dg) by [Jeremie Bresson (Unblu)](https://github.com/jmini) at [EclipseCon Europe 2018](https://www.eclipsecon.org/europe2018)
+- 2018/12/09 - [openapi-generator をカスタマイズする方法](https://qiita.com/watiko/items/0961287c02eac9211572) by [@watiko](https://qiita.com/watiko)
+- 2019/01/03 - [Calling a Swagger service from Apex using openapi-generator](https://lekkimworld.com/2019/01/03/calling-a-swagger-service-from-apex-using-openapi-generator/) by [Mikkel Flindt Heisterberg](https://lekkimworld.com)
 
 ## [6 - About Us](#table-of-contents)
 
@@ -568,7 +570,7 @@ Here is a list of template creators:
    * Dart 2: @swipesight
    * Dart (Jaguar): @jaumard
    * Elixir: @niku
-   * Elm: @trenneman
+   * Elm: @eriktim
    * Eiffel: @jvelilla
    * Erlang: @tsloughter
    * Erlang (PropEr): @jfacorro @robertoaloi
@@ -621,6 +623,7 @@ Here is a list of template creators:
    * Erlang Server: @galaxie
    * Go Server: @guohuang
    * Go (Gin) Server: @kemokemo
+   * GraphQL Express Server: @renepardon
    * Haskell Servant: @algas
    * Java MSF4J: @sanjeewa-malalgoda
    * Java Spring Boot: @diyfr
@@ -648,6 +651,7 @@ Here is a list of template creators:
  * Configuration
    * Apache2: @stkrwork
  * Schema
+   * GraphQL: @wing328
    * MySQL: @ybelenko
 
 #### How to join the core team
@@ -692,10 +696,11 @@ If you want to join the committee, please kindly apply by sending an email to te
 | Clojure   |  |
 | Dart      | @ircecho (2017/07) @swipesight (2018/09) @jaumard (2018/09) |
 | Eiffel    | @jvelilla (2017/09) |
-| Elixir    |  |
-| Elm       | @trenneman (2018/09) |
+| Elixir    | @mrmstn (2018/12) |
+| Elm       | @eriktim (2018/09) |
 | Erlang    | @tsloughter (2017/11) @jfacorro (2018/10) @robertoaloi (2018/10) |
 | Go        | @antihax (2017/11) @bvwells (2017/12) @grokify (2018/07) @kemokemo (2018/09 |
+| GraphQL   | @renepardon (2018/12) |
 | Groovy    |  |
 | Haskell   |  |
 | Java      | @bbdouglas (2017/07) @JFCote (2017/08) @sreeshas (2017/08) @jfiala (2017/08) @lukoyanov (2017/09) @cbornet (2017/09) @jeff9finger (2018/01) |
@@ -704,7 +709,7 @@ If you want to join the committee, please kindly apply by sending an email to te
 | NodeJS/Javascript | @CodeNinjai (2017/07) @frol (2017/07) @cliffano (2017/07) |
 | ObjC      |  |
 | Perl      | @wing328 (2017/07) |
-| PHP       | @jebentier (2017/07) @dkarlovi (2017/07) @mandrean (2017/08) @jfastnacht (2017/09) @ackintosh (2017/09) @ybelenko (2018/07) |
+| PHP       | @jebentier (2017/07) @dkarlovi (2017/07) @mandrean (2017/08) @jfastnacht (2017/09) @ackintosh (2017/09) @ybelenko (2018/07) @renepardon (2018/12) |
 | PowerShell | |
 | Python    | @taxpon (2017/07) @frol (2017/07) @mbohlool (2017/07) @cbornet (2017/09) @kenjones-cisco (2017/11) @tomplus (2018/10) |
 | R         |  |
@@ -731,7 +736,7 @@ OpenAPI Generator is a fork of [Swagger Codegen](https://github.com/swagger-api/
 - [Daiki Matsudate](https://github.com/d-date)
 - [Daniel](https://github.com/Danielku15)
 - [Emiliano Bonassi](https://github.com/emilianobonassi)
-- [Erik Timmers](https://github.com/trenneman)
+- [Erik Timmers](https://github.com/eriktim)
 - [Esteban Marin](https://github.com/macjohnny)
 - [Gustavo Paz](https://github.com/gustavoapaz)
 - [Javier Velilla](https://github.com/jvelilla)

appveyor.yml

@@ -23,6 +23,9 @@ install:
   - git clone https://github.com/wing328/swagger-samples
   - ps: Start-Process -FilePath 'C:\maven\apache-maven-3.2.5\bin\mvn' -ArgumentList 'jetty:run' -WorkingDirectory "$env:appveyor_build_folder\swagger-samples\java\java-jersey-jaxrs-ci"
 build_script:
+  # build C# API client (refactor)
+  - nuget restore samples\client\petstore\csharp-refactor\OpenAPIClient\Org.OpenAPITools.sln
+  - msbuild samples\client\petstore\csharp-refactor\OpenAPIClient\Org.OpenAPITools.sln /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
   # build C# API client
   - nuget restore samples\client\petstore\csharp\OpenAPIClient\Org.OpenAPITools.sln
   - msbuild samples\client\petstore\csharp\OpenAPIClient\Org.OpenAPITools.sln /logger:"C:\Program Files\AppVeyor\BuildAgent\Appveyor.MSBuildLogger.dll"
@@ -37,6 +40,8 @@ build_script:
 test_script:
   # restore test-related files
   - copy /b/v/y CI\samples.ci\client\petstore\csharp\OpenAPIClient\src\Org.OpenAPITools.Test\Org.OpenAPITools.Test.csproj samples\client\petstore\csharp\OpenAPIClient\src\Org.OpenAPITools.Test\Org.OpenAPITools.Test.csproj
+  # test c# API client (refactor)
+  - nunit-console samples\client\petstore\csharp-refactor\OpenAPIClient\src\Org.OpenAPITools.Test\bin\Debug\Org.OpenAPITools.Test.dll --result=myresults.xml;format=AppVeyor
   # test c# API client
   - nunit-console samples\client\petstore\csharp\OpenAPIClient\src\Org.OpenAPITools.Test\bin\Debug\Org.OpenAPITools.Test.dll --result=myresults.xml;format=AppVeyor
   # test c# API client (with PropertyChanged)

bin/cpp-qt5-petstore.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g cpp-qt5 -o samples/client/petstore/cpp-qt5 $@"
+ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g cpp-qt5-client -o samples/client/petstore/cpp-qt5 $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/csharp-refactor-petstore.sh

@@ -27,11 +27,11 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml -g csharp-refactor -o samples/client/petstore/csharp-refactor/OpenAPIClient --additional-properties packageGuid={321C8C3F-0156-40C1-AE42-D59761FB9B6C} $@"
+ags="generate -t modules/openapi-generator/src/main/resources/csharp-refactor/ -i modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml -g csharp-refactor -o samples/client/petstore/csharp-refactor/OpenAPIClient --additional-properties packageGuid={321C8C3F-0156-40C1-AE42-D59761FB9B6C},useCompareNetObjects=true $@"
 
 java $JAVA_OPTS -jar $executable $ags
 
 # restore csproj file
-#echo "restore csproject file: CI/samples/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj"
-#cp ./CI/samples.ci/client/petstore/csharp/OpenAPIClient/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj ./samples/client/petstore/csharp-refactor/OpenAPIClient/src/Org.OpenAPITools.Test/
+echo "restore csproject file: CI/samples/client/petstore/csharp-refactor/OpenAPIClient/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj"
+cp ./CI/samples.ci/client/petstore/csharp-refactor/OpenAPIClient/src/Org.OpenAPITools.Test/Org.OpenAPITools.Test.csproj ./samples/client/petstore/csharp-refactor/OpenAPIClient/src/Org.OpenAPITools.Test/
 

bin/dart-jaguar-petstore.sh

@@ -28,11 +28,11 @@ fi
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
 
 # Generate client
-ags="$@ generate -t modules/openapi-generator/src/main/resources/dart-jaguar -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -l dart-jaguar -o samples/client/petstore/dart-jaguar/openapi -DhideGenerationTimestamp=true -DpubName=openapi"
+ags="$@ generate -t modules/openapi-generator/src/main/resources/dart-jaguar -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g dart-jaguar -o samples/client/petstore/dart-jaguar/openapi -DhideGenerationTimestamp=true -DpubName=openapi"
 java $JAVA_OPTS -jar $executable $ags
 
 # Generate non-browserClient and put it to the flutter sample app
-ags="$@ generate -t modules/openapi-generator/src/main/resources/dart-jaguar -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -l dart-jaguar -o samples/client/petstore/dart-jaguar/flutter_petstore/openapi -DhideGenerationTimestamp=true -DpubName=openapi"
+ags="$@ generate -t modules/openapi-generator/src/main/resources/dart-jaguar -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g dart-jaguar -o samples/client/petstore/dart-jaguar/flutter_petstore/openapi -DhideGenerationTimestamp=true -DpubName=openapi"
 java $JAVA_OPTS -jar $executable $ags
 
 # There is a proposal to allow importing different libraries depending on the environment:

bin/graphql-schema-petstore.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties $@"
+ags="generate -t modules/openapi-generator/src/main/resources/graphql-schema -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g graphql-schema -o samples/config/petstore/graphql-schema -DpackageName=petstore $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/graphql-server-petstore.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties $@"
+ags="generate -t modules/openapi-generator/src/main/resources/graphql-server -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g graphql-server -o samples/server/petstore/graphql-server -DpackageName=petstore $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/java-petstore-okhttp-gson.sh

@@ -44,4 +44,6 @@ cp CI/samples.ci/client/petstore/java/test-manual/common/ConfigurationTest.java
 cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/auth/ApiKeyAuthTest.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/auth/ApiKeyAuthTest.java
 cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/auth/HttpBasicAuthTest.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/auth/HttpBasicAuthTest.java
 cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/model/EnumValueTest.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/model/EnumValueTest.java
+cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/model/PetTest.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/model/PetTest.java
+cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/model/ArrayOfArrayOfNumberOnly.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/model/ArrayOfArrayOfNumberOnlyTest.java
 cp CI/samples.ci/client/petstore/java/test-manual/okhttp-gson/JSONTest.java samples/client/petstore/java/okhttp-gson/src/test/java/org/openapitools/client/JSONTest.java

bin/javascript-es6-petstore.sh

@@ -29,7 +29,6 @@ fi
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
 ags="generate -t modules/openapi-generator/src/main/resources/Javascript/es6 \
 -i modules/openapi-generator/src/test/resources/2_0/petstore-with-fake-endpoints-models-for-testing.yaml -g javascript \
--o samples/client/petstore/javascript-es6 \
---additional-properties useES6=true $@"
+-o samples/client/petstore/javascript-es6 $@"
 
 java -DappName=PetstoreClient $JAVA_OPTS -jar $executable $ags

bin/openapi3/cpp-qt5-petstore.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g cpp-qt5 -o samples/client/petstore/cpp-qt5 $@"
+ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g cpp-qt5-client -o samples/client/petstore/cpp-qt5 $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/openapi3/go-petstore.sh

@@ -0,0 +1,38 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+SPEC="modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml"
+GENERATOR="go"
+STUB_DIR="samples/openapi3/client/petstore/go/go-petstore"
+echo "Removing files and folders under $STUB_DIR"
+rm -rf $STUB_DIR
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -t modules/openapi-generator/src/main/resources/go -i $SPEC -g $GENERATOR -o $STUB_DIR -DpackageName=petstore $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/openapi3/graphql-petstore-server.sh

@@ -0,0 +1,42 @@
+#!/bin/bash
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+# Make sure that the working directory is the root dir
+SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
+cd "${SCRIPT_DIR}/../"
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+# Make sure that we are regenerating the sample by removing any existing target directory
+TARGET_DIR="$SCRIPT_DIR/../../samples/server/petstore/graphql-server"
+if [ -d "$TARGET_DIR" ]; then
+	rm -rf $TARGET_DIR
+fi
+
+executable="$SCRIPT_DIR/../../modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -t $SCRIPT_DIR/../../modules/openapi-generator/src/main/resources/graphql-server -i $SCRIPT_DIR/../../modules/openapi-generator/src/test/resources/3_0/petstore.yaml -g graphql-server -o $TARGET_DIR $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/openapi3/kotlin-client-petstore.sh

@@ -0,0 +1,35 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=$(ls -ld "$SCRIPT")
+  link=$(expr "$ls" : '.*-> \(.*\)$')
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=$(dirname "$SCRIPT")/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=$(dirname "$SCRIPT")/..
+  APP_DIR=$(cd "${APP_DIR}"; pwd)
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn clean package
+fi
+
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="$@ generate -i modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml -t modules/openapi-generator/src/main/resources/kotlin-client -g kotlin --artifact-id kotlin-petstore-client -D dateLibrary=java8 -o samples/openapi3/client/petstore/kotlin $@"
+
+echo "Cleaning previously generated files if any from samples/openapi3/client/petstore/kotlin"
+rm -rf samples/openapi3/client/petstore/kotlin
+
+echo "Generating Kotling client..."
+java $JAVA_OPTS -jar $executable $ags

bin/openapi3/perl-petstore.sh

@@ -28,6 +28,6 @@ fi
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
 # complex module name used for testing
-ags="generate -i modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml  -g perl -o samples/client/petstore/perl -DhideGenerationTimestamp=true $@"
+ags="generate -t modules/openapi-generator/src/main/resources/perl -i modules/openapi-generator/src/test/resources/3_0/petstore-with-fake-endpoints-models-for-testing.yaml  -g perl -o samples/client/petstore/perl -DhideGenerationTimestamp=true $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/security/cpp-qt5-petstore.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/2_0/petstore-security-test.yaml -g cpp-qt5 -o samples/client/petstore-security-test/cpp-qt5 $@"
+ags="generate -t modules/openapi-generator/src/main/resources/cpp-qt5-client -i modules/openapi-generator/src/test/resources/2_0/petstore-security-test.yaml -g cpp-qt5-client -o samples/client/petstore-security-test/cpp-qt5 $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/security/perl-petstore.sh

@@ -28,7 +28,7 @@ fi
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
 # complex module name used for testing
-ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore-security-test.yaml  -l perl -o samples/client/petstore-security-test/perl $@"
+ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore-security-test.yaml -g perl -o samples/client/petstore-security-test/perl $@"
 
 java $JAVA_OPTS -jar $executable $ags
 

bin/swift3-petstore-objcCompatible.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c ./bin/swift3-petstore-objcCompatible.json -o samples/client/petstore/swift3/objcCompatible $@"
+ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c ./bin/swift3-petstore-objcCompatible.json -o samples/client/petstore/swift3/objcCompatible $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/swift3-petstore-promisekit.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c ./bin/swift3-petstore-promisekit.json -o samples/client/petstore/swift3/promisekit $@"
+ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c ./bin/swift3-petstore-promisekit.json -o samples/client/petstore/swift3/promisekit $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/swift3-petstore-rxswift.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c ./bin/swift3-petstore-rxswift.json -o samples/client/petstore/swift3/rxswift $@"
+ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c ./bin/swift3-petstore-rxswift.json -o samples/client/petstore/swift3/rxswift $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/swift3-petstore-unwraprequired.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c ./bin/swift3-petstore-unwraprequired.json -o samples/client/petstore/swift3/unwraprequired $@"
+ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c ./bin/swift3-petstore-unwraprequired.json -o samples/client/petstore/swift3/unwraprequired $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/swift3-petstore.sh

@@ -27,6 +27,6 @@ fi
 
 # if you've executed sbt assembly previously it will use that instead.
 export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
-ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c ./bin/swift3-petstore.json -o samples/client/petstore/swift3/default $@"
+ags="generate -t modules/openapi-generator/src/main/resources/swift3 -i modules/openapi-generator/src/test/resources/2_0/swift/petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c ./bin/swift3-petstore.json -o samples/client/petstore/swift3/default $@"
 
 java $JAVA_OPTS -jar $executable $ags

bin/typescript-angular-petstore-all.sh

@@ -9,3 +9,7 @@
 ./bin/typescript-angular-v6-petstore-not-provided-in-root-with-npm.sh
 ./bin/typescript-angular-v6-petstore-provided-in-root.sh
 ./bin/typescript-angular-v6-petstore-provided-in-root-with-npm.sh
+./bin/typescript-angular-v7-petstore-not-provided-in-root.sh
+./bin/typescript-angular-v7-petstore-not-provided-in-root-with-npm.sh
+./bin/typescript-angular-v7-petstore-provided-in-root.sh
+./bin/typescript-angular-v7-petstore-provided-in-root-with-npm.sh

bin/typescript-angular-v7-petstore-not-provided-in-root-with-npm.json

@@ -0,0 +1,6 @@
+{
+  "npmName": "@swagger/typescript-angular-petstore",
+  "npmVersion": "1.0.0",
+  "npmRepository" : "https://skimdb.npmjs.com/registry",
+  "snapshot" : false
+}

bin/typescript-angular-v7-petstore-not-provided-in-root-with-npm.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-angular -c bin/typescript-angular-v7-petstore-not-provided-in-root-with-npm.json -o samples/client/petstore/typescript-angular-v7-not-provided-in-root/builds/with-npm -D providedInRoot=false --additional-properties ngVersion=7.0.0 $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/typescript-angular-v7-petstore-not-provided-in-root.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-angular -o samples/client/petstore/typescript-angular-v7-not-provided-in-root/builds/default -D providedInRoot=false --additional-properties ngVersion=7.0.0 $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/typescript-angular-v7-petstore-provided-in-root-with-npm.json

@@ -0,0 +1,6 @@
+{
+  "npmName": "@swagger/typescript-angular-petstore",
+  "npmVersion": "1.0.0",
+  "npmRepository" : "https://skimdb.npmjs.com/registry",
+  "snapshot" : false
+}

bin/typescript-angular-v7-petstore-provided-in-root-with-npm.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-angular -c bin/typescript-angular-v7-petstore-provided-in-root-with-npm.json -o samples/client/petstore/typescript-angular-v7-provided-in-root/builds/with-npm --additional-properties ngVersion=7.0.0 $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/typescript-angular-v7-petstore-provided-in-root.sh

@@ -0,0 +1,32 @@
+#!/bin/sh
+
+SCRIPT="$0"
+echo "# START SCRIPT: $SCRIPT"
+
+while [ -h "$SCRIPT" ] ; do
+  ls=`ls -ld "$SCRIPT"`
+  link=`expr "$ls" : '.*-> \(.*\)$'`
+  if expr "$link" : '/.*' > /dev/null; then
+    SCRIPT="$link"
+  else
+    SCRIPT=`dirname "$SCRIPT"`/"$link"
+  fi
+done
+
+if [ ! -d "${APP_DIR}" ]; then
+  APP_DIR=`dirname "$SCRIPT"`/..
+  APP_DIR=`cd "${APP_DIR}"; pwd`
+fi
+
+executable="./modules/openapi-generator-cli/target/openapi-generator-cli.jar"
+
+if [ ! -f "$executable" ]
+then
+  mvn -B clean package
+fi
+
+# if you've executed sbt assembly previously it will use that instead.
+export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/log4j.properties"
+ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-angular -o samples/client/petstore/typescript-angular-v7-provided-in-root/builds/default --additional-properties ngVersion=7.0.0 $@"
+
+java $JAVA_OPTS -jar $executable $ags

bin/typescript-fetch-petstore-target-es6.sh

@@ -30,3 +30,5 @@ export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/
 ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-fetch -c bin/typescript-fetch-petstore-target-es6.json -o samples/client/petstore/typescript-fetch/builds/es6-target $@"
 
 java $JAVA_OPTS -jar $executable $ags
+cp CI/samples.ci/client/petstore/typescript-fetch/builds/es6-target/pom.xml samples/client/petstore/typescript-fetch/builds/es6-target/pom.xml
+cp CI/samples.ci/client/petstore/typescript-fetch/tests/default/pom.xml samples/client/petstore/typescript-fetch/tests/default/pom.xml 

bin/typescript-fetch-petstore-with-npm-version.sh

@@ -30,3 +30,5 @@ export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/
 ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-fetch -c bin/typescript-fetch-petstore-with-npm-version.json -o samples/client/petstore/typescript-fetch/builds/with-npm-version $@"
 
 java $JAVA_OPTS -jar $executable $ags
+cp CI/samples.ci/client/petstore/typescript-fetch/builds/with-npm-version/pom.xml samples/client/petstore/typescript-fetch/builds/with-npm-version/pom.xml
+cp CI/samples.ci/client/petstore/typescript-fetch/tests/default/pom.xml samples/client/petstore/typescript-fetch/tests/default/pom.xml 

bin/typescript-fetch-petstore.sh

@@ -30,3 +30,5 @@ export JAVA_OPTS="${JAVA_OPTS} -XX:MaxPermSize=256M -Xmx1024M -DloggerPath=conf/
 ags="generate -i modules/openapi-generator/src/test/resources/2_0/petstore.yaml -g typescript-fetch -o samples/client/petstore/typescript-fetch/builds/default $@"
 
 java $JAVA_OPTS -jar $executable $ags
+cp CI/samples.ci/client/petstore/typescript-fetch/builds/default/pom.xml samples/client/petstore/typescript-fetch/builds/default/pom.xml
+cp CI/samples.ci/client/petstore/typescript-fetch/tests/default/pom.xml samples/client/petstore/typescript-fetch/tests/default/pom.xml 

bin/utils/release_checkout.rb

@@ -1,8 +1,26 @@
-#release_chekcout.rb
+#!/usr/bin/env ruby
+#
+# release_chekcout.rb
+#
 require 'rubygems'
 require 'open-uri'
 require 'net/http'
 
+def check_npmjs
+  print "Checking npmjs... "
+
+  url = "https://www.npmjs.com/package/@openapitools/openapi-generator-cli?activeTab=versions"
+  open(url) do |f|
+    content = f.read
+    if !content.nil? && content.include?($version)
+      puts "[OK]"
+    else
+      puts "[ERROR]"
+      puts "> #{url} not yet updated with #{$version}"
+    end
+  end
+end
+
 def check_homebrew
   print "Checking homebrew forumla ... "
 
@@ -184,6 +202,7 @@ $version = ARGV[0]
 
 puts "Running checkout on OpenAPI Generator release #{$version}"
 
+check_npmjs
 check_homebrew
 check_openapi_generator_jar
 check_openapi_generator_cli_jar

bin/windows/cpp-qt5-petstore.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g cpp-qt5 -o samples\client\petstore\cpp-qt5
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g cpp-qt5-client -o samples\client\petstore\cpp-qt5
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/dart-client-petstore.bat

@@ -5,8 +5,8 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M -DloggerPath=conf/log4j.properties
-set ags=generate -i modules\swagger-codegen\src\test\resources\2_0\petstore.yaml -l dart-jaguar -o samples\client\petstore\dart-jaguar\swagger -DhideGenerationTimestamp=true -DbrowserClient=false
+set ags=generate -i modules\swagger-codegen\src\test\resources\2_0\petstore.yaml -g dart-jaguar -o samples\client\petstore\dart-jaguar\swagger -DhideGenerationTimestamp=true -DbrowserClient=false
 java %JAVA_OPTS% -jar %executable% %ags%
 
-set ags=generate -i modules\swagger-codegen\src\test\resources\2_0\petstore.yaml -l dart-jaguar -o samples\client\petstore\dart-jaguar\flutter_petstore\swagger -DhideGenerationTimestamp=true
+set ags=generate -i modules\swagger-codegen\src\test\resources\2_0\petstore.yaml -g dart-jaguar -o samples\client\petstore\dart-jaguar\flutter_petstore\swagger -DhideGenerationTimestamp=true
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/graphql-petstore-server.bat

@@ -0,0 +1,10 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
+set ags=generate -t modules\openapi-generator\src\main\resources\graphql-server -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g graphql-server -o samples\server\petstore\graphql-server
+
+java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/graphql-schema-petstore.bat

@@ -0,0 +1,10 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
+set ags=generate -t modules\openapi-generator\src\main\resources\graphql-schema -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g graphql-schema -o samples\config\petstore\graphql-schema
+
+java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/swift3-petstore-promisekit.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c bin\swift3-petstore-promisekit.json -o samples\client\petstore\swift3\promisekit
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c bin\swift3-petstore-promisekit.json -o samples\client\petstore\swift3\promisekit
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/swift3-petstore-rxswift.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -c bin\swift3-petstore-rxswift.json -o samples\client\petstore\swift3\rxswift
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -c bin\swift3-petstore-rxswift.json -o samples\client\petstore\swift3\rxswift
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/swift3-petstore.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3 -o samples\client\petstore\swift3\default
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore-with-fake-endpoints-models-for-testing.yaml -g swift3-deprecated -o samples\client\petstore\swift3\default
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-petstore-all.bat

@@ -7,5 +7,8 @@ call .\bin\windows\typescript-angular-v6-provided-in-root.bat
 call .\bin\windows\typescript-angular-v6-provided-in-root-with-npm.bat
 call .\bin\windows\typescript-angular-v6-not-provided-in-root.bat
 call .\bin\windows\typescript-angular-v6-not-provided-in-root-with-npm.bat
-
+call .\bin\windows\typescript-angular-v7-provided-in-root.bat
+call .\bin\windows\typescript-angular-v7-provided-in-root-with-npm.bat
+call .\bin\windows\typescript-angular-v7-not-provided-in-root.bat
+call .\bin\windows\typescript-angular-v7-not-provided-in-root-with-npm.bat
 

bin/windows/typescript-angular-v6-not-provided-in-root-with-npm.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -l typescript-angular -c bin\typescript-angular-v6-petstore-not-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v6-not-provided-in-root\builds\with-npm -D providedInRoot=false --additional-properties ngVersion=6.0.0
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -c bin\typescript-angular-v6-petstore-not-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v6-not-provided-in-root\builds\with-npm -D providedInRoot=false --additional-properties ngVersion=6.0.0
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v6-not-provided-in-root.bat

@@ -5,6 +5,6 @@ If Not Exist %executable% (
 )
 
 REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -l typescript-angular -o samples\client\petstore\typescript-angular-v6-not-provided-in-root\builds\default -D providedInRoot=false --additional-properties ngVersion=6.0.0
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -o samples\client\petstore\typescript-angular-v6-not-provided-in-root\builds\default -D providedInRoot=false --additional-properties ngVersion=6.0.0
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v6-provided-in-root-with-npm.bat

@@ -4,6 +4,6 @@ If Not Exist %executable% (
   mvn clean package
 )
 
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -l typescript-angular -c bin/typescript-angular-v6-petstore-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v6-provided-in-root\builds\with-npm --additional-properties ngVersion=6.0.0
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -c bin/typescript-angular-v6-petstore-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v6-provided-in-root\builds\with-npm --additional-properties ngVersion=6.0.0
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v6-provided-in-root.bat

@@ -4,6 +4,6 @@ If Not Exist %executable% (
   mvn clean package
 )
 
-set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -l typescript-angular -o samples\client\petstore\typescript-angular-v6-provided-in-root\builds\default --additional-properties ngVersion=6.0.0
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -o samples\client\petstore\typescript-angular-v6-provided-in-root\builds\default --additional-properties ngVersion=6.0.0
 
 java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v7-not-provided-in-root-with-npm.bat

@@ -0,0 +1,10 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -c bin\typescript-angular-v7-petstore-not-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v7-not-provided-in-root\builds\with-npm -D providedInRoot=false --additional-properties ngVersion=7.0.0
+
+java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v7-not-provided-in-root.bat

@@ -0,0 +1,10 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+REM set JAVA_OPTS=%JAVA_OPTS% -Xmx1024M
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -o samples\client\petstore\typescript-angular-v7-not-provided-in-root\builds\default -D providedInRoot=false --additional-properties ngVersion=7.0.0
+
+java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v7-provided-in-root-with-npm.bat

@@ -0,0 +1,9 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -c bin/typescript-angular-v7-petstore-provided-in-root-with-npm.json -o samples\client\petstore\typescript-angular-v7-provided-in-root\builds\with-npm --additional-properties ngVersion=7.0.0
+
+java %JAVA_OPTS% -jar %executable% %ags%

bin/windows/typescript-angular-v7-provided-in-root.bat

@@ -0,0 +1,9 @@
+set executable=.\modules\openapi-generator-cli\target\openapi-generator-cli.jar
+
+If Not Exist %executable% (
+  mvn clean package
+)
+
+set ags=generate -i modules\openapi-generator\src\test\resources\2_0\petstore.yaml -g typescript-angular -o samples\client\petstore\typescript-angular-v7-provided-in-root\builds\default --additional-properties ngVersion=7.0.0
+
+java %JAVA_OPTS% -jar %executable% %ags%

docker-entrypoint.sh

@@ -12,7 +12,7 @@ codegen="${cli}/target/openapi-generator-cli.jar"
 # We code in a list of commands here as source processing is potentially buggy (requires undocumented conventional use of annotations).
 # A list of known commands helps us determine if we should compile CLI. There's an edge-case where a new command not added to this
 # list won't be considered a "real" command. We can get around that a bit by checking CLI completions beforehand if it exists.
-commands="list,generate,meta,langs,help,config-help,validate,version"
+commands="list,generate,meta,help,config-help,validate,version"
 
 # if CLI jar exists, check $1 against completions available in the CLI
 if [[ -f "${codegen}" && -n "$(java ${JAVA_OPTS} -jar "${codegen}" completion | grep "^$1\$" )" ]]; then

docs/generators/c.md

@@ -0,0 +1,19 @@
+
+CONFIG OPTIONS for c
+
+	sortParamsByRequiredFlag
+	    Sort method arguments to place required parameters before optional parameters. (Default: true)
+
+	ensureUniqueParams
+	    Whether to ensure parameter names are unique in an operation (rename parameters that are not). (Default: true)
+
+	allowUnicodeIdentifiers
+	    boolean, toggles whether unicode identifiers are allowed in names or not, default is false (Default: false)
+
+	prependFormOrBodyParameters
+	    Add form or body parameters to the beginning of the parameter list. (Default: false)
+
+	hideGenerationTimestamp
+	    Hides the generation timestamp when files are generated. (Default: true)
+
+Back to the [generators list](README.md)

docs/generators/clojure.md

@@ -17,7 +17,7 @@ CONFIG OPTIONS for clojure
 	    name of the project (Default: generated from info.title or "openapi-clj-client")
 
 	projectDescription
-	    description of the project (Default: using info.description or "Client library of <projectNname>")
+	    description of the project (Default: using info.description or "Client library of <projectName>")
 
 	projectVersion
 	    version of the project (Default: using info.version or "1.0.0")

docs/generators/cpp-qt5-client.md

@@ -0,0 +1,25 @@
+
+CONFIG OPTIONS for cpp-qt5-client
+
+	sortParamsByRequiredFlag
+	    Sort method arguments to place required parameters before optional parameters. (Default: true)
+
+	ensureUniqueParams
+	    Whether to ensure parameter names are unique in an operation (rename parameters that are not). (Default: true)
+
+	allowUnicodeIdentifiers
+	    boolean, toggles whether unicode identifiers are allowed in names or not, default is false (Default: false)
+
+	prependFormOrBodyParameters
+	    Add form or body parameters to the beginning of the parameter list. (Default: false)
+
+	cppNamespace
+	    C++ namespace (convention: name::space::for::api). (Default: OpenAPI)
+
+	cppNamespace
+	    C++ namespace (convention: name::space::for::api). (Default: OpenAPI)
+
+	optionalProjectFile
+	    Generate client.pri. (Default: true)
+
+Back to the [generators list](README.md)

docs/generators/cpp-qt5-qhttpengine-server.md

@@ -16,4 +16,7 @@ CONFIG OPTIONS for cpp-qt5-qhttpengine-server
 	cppNamespace
 	    C++ namespace (convention: name::space::for::api). (Default: OpenAPI)
 
+	cppNamespace
+	    C++ namespace (convention: name::space::for::api). (Default: OpenAPI)
+
 Back to the [generators list](README.md)

docs/generators/csharp.md

@@ -69,4 +69,7 @@ CONFIG OPTIONS for csharp
 	validatable
 	    Generates self-validatable models. (Default: true)
 
+	useCompareNetObjects
+	    Use KellermanSoftware.CompareNetObjects for deep recursive object comparison. WARNING: this option incurs potential performance impact. (Default: false)
+
 Back to the [generators list](README.md)

docs/generators/dart-jaguar.md

@@ -34,4 +34,7 @@ CONFIG OPTIONS for dart-jaguar
 	supportDart2
 	    support dart2 (Default: true)
 
+	nullableFields
+	    Is the null fields should be in the JSON payload
+
 Back to the [generators list](README.md)

docs/generators/elm.md

@@ -9,4 +9,10 @@ CONFIG OPTIONS for elm
 	elmPrefixCustomTypeVariants
 	    Prefix custom type variants (Default: false)
 
+	elmEnableCustomBasePaths
+	    Enable setting the base path for each request (Default: false)
+
+	elmEnableHttpRequestTrackers
+	    Enable adding a tracker to each http request (Default: false)
+
 Back to the [generators list](README.md)

docs/generators/erlang-proper.md

@@ -0,0 +1,10 @@
+
+CONFIG OPTIONS for erlang-proper
+
+	packageName
+	    Erlang application name (convention: lowercase). (Default: openapi)
+
+	packageName
+	    Erlang application version (Default: 1.0.0)
+
+Back to the [generators list](README.md)

docs/generators/graphql-schema.md

@@ -0,0 +1,13 @@
+
+CONFIG OPTIONS for graphql-schema
+
+	packageName
+	    GraphQL package name (convention: lowercase). (Default: openapi2graphql)
+
+	packageVersion
+	    GraphQL package version. (Default: 1.0.0)
+
+	hideGenerationTimestamp
+	    Hides the generation timestamp when files are generated. (Default: true)
+
+Back to the [generators list](README.md)

docs/generators/graphql-server.md

@@ -0,0 +1,13 @@
+
+CONFIG OPTIONS for graphql-server
+
+	packageName
+	    GraphQL express server package name (convention: lowercase). (Default: openapi3graphql-server)
+
+	packageVersion
+	    GraphQL express server package version. (Default: 1.0.0)
+
+	hideGenerationTimestamp
+	    Hides the generation timestamp when files are generated. (Default: true)
+
+Back to the [generators list](README.md)

docs/generators/java.md

@@ -146,6 +146,9 @@ CONFIG OPTIONS for java
 	feignVersion
 	    Version of OpenFeign: '10.x', '9.x' (default) (Default: false)
 
+	useReflectionEqualsHashCode
+	    Use org.apache.commons.lang3.builder for equals and hashCode in the models. WARNING: This will fail under a security manager, unless the appropriate permissions are set up correctly and also there's potential performance impact. (Default: false)
+
 	library
 	    library template (sub-template) to use (Default: okhttp-gson)
 	        jersey1 - HTTP client: Jersey client 1.19.4. JSON processing: Jackson 2.8.9. Enable Java6 support using '-DsupportJava6=true'. Enable gzip request encoding using '-DuseGzipFeature=true'.

docs/generators/javascript.md

@@ -59,7 +59,7 @@ CONFIG OPTIONS for javascript
 	    Hides the generation timestamp when files are generated. (Default: true)
 
 	useES6
-	    use JavaScript ES6 (ECMAScript 6) (beta). Default is ES5. (Default: false)
+	    use JavaScript ES6 (ECMAScript 6) (beta). Default is ES6. (Default: true)
 
 	modelPropertyNaming
 	    Naming convention for the property: 'camelCase', 'PascalCase', 'snake_case' and 'original', which keeps the original name (Default: camelCase)

docs/generators/php-slim.md

@@ -40,7 +40,4 @@ CONFIG OPTIONS for php-slim
 	artifactVersion
 	    The version to use in the composer package version field. e.g. 1.2.3
 
-	phpcsStandard
-	    PHP CodeSniffer <standard> option. Accepts name or path of the coding standard to use. (Default: PSR12)
-
 Back to the [generators list](README.md)

docs/migration-from-swagger-codegen.md

@@ -156,7 +156,7 @@ Corresponding java code: `CodegenProperty.datatype` is renamed to `CodegenProper
 `.swagger-codegen-ignore` is replaced by `.openapi-generator-ignore`.
 The syntax inside the file stays the same.
 
-You don't need to rename the file manually, OpenAPI Generator will do it when your run it against an existing an existing output directory.
+You don't need to rename the file manually, OpenAPI Generator will do it when your run it against an existing output directory.
 (When there is no `.openapi-generator-ignore` in a folder, if a `.swagger-codegen-ignore` file is present it will be considered and renamed to `.openapi-generator-ignore`).
 
 

docs/migration-guide.adoc

@@ -11,6 +11,17 @@ Another approach to find breaking changes is to look at issue and pull requests
 * link:https://github.com/OpenAPITools/openapi-generator/labels/Breaking%20change%20%28with%20fallback%29[Breaking change (with fallback)]
 * link:https://github.com/OpenAPITools/openapi-generator/labels/Breaking%20change%20%28without%20fallback%29[Breaking change (without fallback)]
 
+=== From 3.x to 4.0.0
+
+Version `4.0.0` is a major release, which contains some breaking changes without fallback.
+
+==== The `-l` (`--lang`) option has been deleted
+
+The option is replaced with `-g` (`--generator-name`).
+
+* `-g` allows the same values as `-l`
+* See `list` command for the list of generator name
+
 === From 3.1.x to 3.2.0
 
 Version `3.2.0` is a minor version of OpenAPI-Generator, in comparison to `3.1.x` it contains some breaking changes, but with the possibility to fallback to the old behavior.

modules/openapi-generator-cli/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.openapitools</groupId>
         <artifactId>openapi-generator-project</artifactId>
-        <version>3.3.4</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/OpenAPIGenerator.java

@@ -50,7 +50,6 @@ public class OpenAPIGenerator {
                                 ListGenerators.class,
                                 Generate.class,
                                 Meta.class,
-                                Langs.class,
                                 Help.class,
                                 ConfigHelp.class,
                                 Validate.class,
@@ -72,7 +71,7 @@ public class OpenAPIGenerator {
                 System.exit(1);
             }
         } catch (ParseArgumentsUnexpectedException e) {
-            System.err.printf(Locale.ROOT,"[error] %s%n%nSee 'openapi-generator-cli help' for usage.%n", e.getMessage());
+            System.err.printf(Locale.ROOT,"[error] %s%n%nSee 'openapi-generator help' for usage.%n", e.getMessage());
             System.exit(1);
         } catch (ParseOptionMissingException | ParseOptionMissingValueException e) {
             System.err.printf(Locale.ROOT,"[error] %s%n", e.getMessage());

modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/ConfigHelp.java

@@ -37,10 +37,6 @@ public class ConfigHelp implements Runnable {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(Generate.class);
 
-    @Option(name = {"-l", "--lang"}, title = "language",
-            description = "language to get config help for")
-    private String lang;
-
     @Option(name = {"-g", "--generator-name"}, title = "generator name",
             description = "generator to get config help for")
     private String generatorName;
@@ -57,16 +53,9 @@ public class ConfigHelp implements Runnable {
 
     @Override
     public void run() {
-
-        // TODO: After 3.0.0 release (maybe for 3.1.0): Fully deprecate lang.
         if (isEmpty(generatorName)) {
-            if (isNotEmpty(lang)) {
-                LOGGER.warn("The '--lang' and '-l' are deprecated and may reference language names only in the next major release (4.0). Please use --generator-name /-g instead.");
-                generatorName = lang;
-            } else {
-                System.err.println("[error] A generator name (--generator-name / -g) is required.");
-                System.exit(1);
-            }
+            System.err.println("[error] A generator name (--generator-name / -g) is required.");
+            System.exit(1);
         }
 
         try {

modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Generate.java

@@ -49,12 +49,8 @@ public class Generate implements Runnable {
     @Option(name = {"-v", "--verbose"}, description = "verbose mode")
     private Boolean verbose;
 
-    @Option(name = {"-l", "--lang"}, title = "language",
-            description = "client language to generate (maybe class name in classpath, required)")
-    private String lang;
-
     @Option(name = {"-g", "--generator-name"}, title = "generator name",
-            description = "generator to use (see langs command for list)")
+            description = "generator to use (see list command for list)")
     private String generatorName;
 
     @Option(name = {"-o", "--output"}, title = "output directory",
@@ -212,6 +208,9 @@ public class Generate implements Runnable {
     @Option(name = {"--enable-post-process-file"}, title = "enable post-process file", description = CodegenConstants.ENABLE_POST_PROCESS_FILE)
     private Boolean enablePostProcessFile;
 
+    @Option(name = {"--generate-alias-as-model"}, title = "generate alias (array, map) as model", description = CodegenConstants.GENERATE_ALIAS_AS_MODEL_DESC)
+    private Boolean generateAliasAsModel;
+
     @Override
     public void run() {
         if (logToStderr != null) {
@@ -255,12 +254,8 @@ public class Generate implements Runnable {
             configurator.setInputSpec(spec);
         }
 
-        // TODO: After 3.0.0 release (maybe for 3.1.0): Fully deprecate lang.
         if (isNotEmpty(generatorName)) {
             configurator.setGeneratorName(generatorName);
-        } else if (isNotEmpty(lang)) {
-            LOGGER.warn("The '--lang' and '-l' are deprecated and may reference language names only in the next major release (4.0). Please use --generator-name /-g instead.");
-            configurator.setGeneratorName(lang);
         } else {
             System.err.println("[error] A generator name (--generator-name / -g) is required.");
             System.exit(1);
@@ -342,6 +337,10 @@ public class Generate implements Runnable {
             configurator.setEnablePostProcessFile(enablePostProcessFile);
         }
 
+        if (generateAliasAsModel != null) {
+            configurator.setGenerateAliasAsModel(generateAliasAsModel);
+        }
+
         applySystemPropertiesKvpList(systemProperties, configurator);
         applyInstantiationTypesKvpList(instantiationTypes, configurator);
         applyImportMappingsKvpList(importMappings, configurator);

modules/openapi-generator-cli/src/main/java/org/openapitools/codegen/cmd/Langs.java

@@ -1,41 +0,0 @@
-/*
- * Copyright 2018 OpenAPI-Generator Contributors (https://openapi-generator.tech)
- * Copyright 2018 SmartBear Software
- *
- * Licensed under the Apache License, Version 2.0 (the "License");
- * you may not use this file except in compliance with the License.
- * You may obtain a copy of the License at
- *
- *     http://www.apache.org/licenses/LICENSE-2.0
- *
- * Unless required by applicable law or agreed to in writing, software
- * distributed under the License is distributed on an "AS IS" BASIS,
- * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
- * See the License for the specific language governing permissions and
- * limitations under the License.
- */
-
-package org.openapitools.codegen.cmd;
-
-import ch.lambdaj.collection.LambdaIterable;
-import io.airlift.airline.Command;
-import org.openapitools.codegen.CodegenConfig;
-
-import java.util.Locale;
-
-import static ch.lambdaj.Lambda.on;
-import static ch.lambdaj.collection.LambdaCollections.with;
-import static java.util.ServiceLoader.load;
-
-/**
- * User: lanwen Date: 24.03.15 Time: 20:25
- */
-@Command(name = "langs", description = "Shows available languages (deprecated. use 'list' instead)")
-public class Langs implements Runnable {
-    @Override
-    public void run() {
-        LambdaIterable<String> langs =
-                with(load(CodegenConfig.class)).extract(on(CodegenConfig.class).getName());
-        System.out.printf(Locale.ROOT, "Available languages (generators): %s%n", langs);
-    }
-}

modules/openapi-generator-gradle-plugin/build.gradle

@@ -181,3 +181,5 @@ compileTestKotlin {
         jvmTarget = "1.8"
     }
 }
+
+uploadArchives.dependsOn 'check'

modules/openapi-generator-gradle-plugin/gradle.properties

@@ -1,4 +1,4 @@
-openApiGeneratorVersion=3.3.4
+openApiGeneratorVersion=4.0.0-SNAPSHOT
 
 # BEGIN placeholders
 # these are just placeholders to allow contributors to build directly

modules/openapi-generator-gradle-plugin/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.openapitools</groupId>
         <artifactId>openapi-generator-project</artifactId>
-        <version>3.3.4</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <modelVersion>4.0.0</modelVersion>

modules/openapi-generator-gradle-plugin/src/main/kotlin/org/openapitools/generator/gradle/plugin/tasks/GenerateTask.kt

@@ -28,6 +28,7 @@ import org.gradle.kotlin.dsl.property
 import org.openapitools.codegen.CodegenConstants
 import org.openapitools.codegen.DefaultGenerator
 import org.openapitools.codegen.config.CodegenConfigurator
+import org.openapitools.codegen.config.GeneratorProperties
 
 
 /**
@@ -323,8 +324,6 @@ open class GenerateTask : DefaultTask() {
     @get:Internal
     val configOptions = project.objects.property<Map<String, String>>()
 
-    private val originalEnvironmentVariables = mutableMapOf<String, String?>()
-
     private fun <T : Any?> Property<T>.ifNotEmpty(block: Property<T>.(T) -> Unit) {
         if (isPresent) {
             val item: T? = get()
@@ -352,36 +351,33 @@ open class GenerateTask : DefaultTask() {
         try {
             if (systemProperties.isPresent) {
                 systemProperties.get().forEach { (key, value) ->
-                    // System.setProperty returns the original value for a key, or null.
-                    // Cache the original value or null…we will late put the properties back in their original state.
-                    originalEnvironmentVariables[key] = System.setProperty(key, value)
                     configurator.addSystemProperty(key, value)
                 }
             }
 
             if (supportingFilesConstrainedTo.isPresent && supportingFilesConstrainedTo.get().isNotEmpty()) {
-                System.setProperty(CodegenConstants.SUPPORTING_FILES, supportingFilesConstrainedTo.get().joinToString(","))
+                GeneratorProperties.setProperty(CodegenConstants.SUPPORTING_FILES, supportingFilesConstrainedTo.get().joinToString(","))
             } else {
-                System.clearProperty(CodegenConstants.SUPPORTING_FILES)
+                GeneratorProperties.clearProperty(CodegenConstants.SUPPORTING_FILES)
             }
 
             if (modelFilesConstrainedTo.isPresent && modelFilesConstrainedTo.get().isNotEmpty()) {
-                System.setProperty(CodegenConstants.MODELS, modelFilesConstrainedTo.get().joinToString(","))
+                GeneratorProperties.setProperty(CodegenConstants.MODELS, modelFilesConstrainedTo.get().joinToString(","))
             } else {
-                System.clearProperty(CodegenConstants.MODELS)
+                GeneratorProperties.clearProperty(CodegenConstants.MODELS)
             }
 
             if (apiFilesConstrainedTo.isPresent && apiFilesConstrainedTo.get().isNotEmpty()) {
-                System.setProperty(CodegenConstants.APIS, apiFilesConstrainedTo.get().joinToString(","))
+                GeneratorProperties.setProperty(CodegenConstants.APIS, apiFilesConstrainedTo.get().joinToString(","))
             } else {
-                System.clearProperty(CodegenConstants.APIS)
+                GeneratorProperties.clearProperty(CodegenConstants.APIS)
             }
 
-            System.setProperty(CodegenConstants.API_DOCS, generateApiDocumentation.get().toString())
-            System.setProperty(CodegenConstants.MODEL_DOCS, generateModelDocumentation.get().toString())
-            System.setProperty(CodegenConstants.MODEL_TESTS, generateModelTests.get().toString())
-            System.setProperty(CodegenConstants.API_TESTS, generateApiTests.get().toString())
-            System.setProperty(CodegenConstants.WITH_XML, withXml.get().toString())
+            GeneratorProperties.setProperty(CodegenConstants.API_DOCS, generateApiDocumentation.get().toString())
+            GeneratorProperties.setProperty(CodegenConstants.MODEL_DOCS, generateModelDocumentation.get().toString())
+            GeneratorProperties.setProperty(CodegenConstants.MODEL_TESTS, generateModelTests.get().toString())
+            GeneratorProperties.setProperty(CodegenConstants.API_TESTS, generateApiTests.get().toString())
+            GeneratorProperties.setProperty(CodegenConstants.WITH_XML, withXml.get().toString())
 
             // now override with any specified parameters
             verbose.ifNotEmpty { value ->
@@ -541,14 +537,7 @@ open class GenerateTask : DefaultTask() {
                 throw GradleException("Code generation failed.", e)
             }
         } finally {
-            // Reset all modified system properties back to their original state
-            originalEnvironmentVariables.forEach {
-                when {
-                    it.value == null -> System.clearProperty(it.key)
-                    else -> System.setProperty(it.key, it.value)
-                }
-            }
-            originalEnvironmentVariables.clear()
+            GeneratorProperties.reset()
         }
     }
 }

modules/openapi-generator-gradle-plugin/src/test/kotlin/GenerateTaskDslTest.kt

@@ -48,14 +48,12 @@ class GenerateTaskDslTest : TestBase()  {
         listOf(
             "build/kotlin/.openapi-generator-ignore",
             "build/kotlin/docs/PetsApi.md",
-            "build/kotlin/docs/Pets.md",
             "build/kotlin/docs/Error.md",
             "build/kotlin/docs/Pet.md",
             "build/kotlin/README.md",
             "build/kotlin/build.gradle",
             "build/kotlin/.openapi-generator/VERSION",
             "build/kotlin/settings.gradle",
-            "build/kotlin/src/main/kotlin/org/openapitools/example/model/Pets.kt",
             "build/kotlin/src/main/kotlin/org/openapitools/example/model/Pet.kt",
             "build/kotlin/src/main/kotlin/org/openapitools/example/model/Error.kt",
             "build/kotlin/src/main/kotlin/org/openapitools/example/api/PetsApi.kt",

modules/openapi-generator-maven-plugin/pom.xml

@@ -4,7 +4,7 @@
     <parent>
         <groupId>org.openapitools</groupId>
         <artifactId>openapi-generator-project</artifactId>
-        <version>3.3.4</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <artifactId>openapi-generator-maven-plugin</artifactId>
@@ -23,7 +23,7 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-core</artifactId>
-            <version>3.2.5</version>
+            <version>3.3.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.maven</groupId>
@@ -34,12 +34,12 @@
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-compat</artifactId>
-            <version>3.2.5</version>
+            <version>3.5.0</version>
         </dependency>
         <dependency>
             <groupId>org.apache.maven</groupId>
             <artifactId>maven-plugin-api</artifactId>
-            <version>3.2.5</version>
+            <version>3.3.1</version>
         </dependency>
         <dependency>
             <groupId>org.apache.maven.plugin-tools</groupId>

modules/openapi-generator-maven-plugin/src/main/java/org/openapitools/codegen/plugin/CodeGenMojo.java

@@ -51,6 +51,7 @@ import org.openapitools.codegen.CodegenConfig;
 import org.openapitools.codegen.CodegenConstants;
 import org.openapitools.codegen.DefaultGenerator;
 import org.openapitools.codegen.config.CodegenConfigurator;
+import org.openapitools.codegen.config.GeneratorProperties;
 import org.sonatype.plexus.build.incremental.BuildContext;
 import org.sonatype.plexus.build.incremental.DefaultBuildContext;
 import org.slf4j.Logger;
@@ -144,12 +145,6 @@ public class CodeGenMojo extends AbstractMojo {
     @Parameter(name = "skipOverwrite", required = false)
     private Boolean skipOverwrite;
 
-    /**
-     * Specifies if the existing files should be overwritten during the generation.
-     */
-    @Parameter(name = "removeOperationIdPrefix", required = false)
-    private Boolean removeOperationIdPrefix;
-
     /**
      * The package to use for generated api objects/classes
      */
@@ -210,6 +205,36 @@ public class CodeGenMojo extends AbstractMojo {
     @Parameter(name = "ignoreFileOverride", required = false)
     private String ignoreFileOverride;
 
+    /**
+     * To remove operationId prefix (e.g. user_getName => getName)
+     */
+    @Parameter(name = "removeOperationIdPrefix", required = false)
+    private Boolean removeOperationIdPrefix;
+
+    /**
+     * To write all log messages (not just errors) to STDOUT
+     */
+    @Parameter(name = "logToStderr", required = false)
+    private Boolean logToStderr;
+
+    /**
+     * To file post-processing hook
+     */
+    @Parameter(name = "enablePostProcessFile", required = false)
+    private Boolean enablePostProcessFile;
+
+    /**
+     * To skip spec validation
+     */
+    @Parameter(name = "skipValidateSpec", required = false)
+    private Boolean skipValidateSpec;
+
+    /**
+     * To generate alias (array, map) as model
+     */
+    @Parameter(name = "generateAliasAsModel", required = false)
+    private Boolean generateAliasAsModel;
+
     /**
      * A map of language-specific parameters as passed with the -c option to the command line
      */
@@ -432,6 +457,22 @@ public class CodeGenMojo extends AbstractMojo {
                 configurator.setIgnoreFileOverride(ignoreFileOverride);
             }
 
+            if (skipValidateSpec != null) {
+                configurator.setSkipOverwrite(skipValidateSpec);
+            }
+
+            if (logToStderr != null) {
+                configurator.setLogToStderr(logToStderr);
+            }
+
+            if (enablePostProcessFile != null) {
+                configurator.setEnablePostProcessFile(enablePostProcessFile);
+            }
+
+            if (generateAliasAsModel  != null) {
+                configurator.setGenerateAliasAsModel(generateAliasAsModel);
+            }
+
             // TODO: After 3.0.0 release (maybe for 3.1.0): Fully deprecate lang.
             if (isNotEmpty(generatorName)) {
                 configurator.setGeneratorName(generatorName);
@@ -499,28 +540,28 @@ public class CodeGenMojo extends AbstractMojo {
 
             // Set generation options
             if (null != generateApis && generateApis) {
-                System.setProperty(CodegenConstants.APIS, "");
+                GeneratorProperties.setProperty(CodegenConstants.APIS, "");
             } else {
-                System.clearProperty(CodegenConstants.APIS);
+                GeneratorProperties.clearProperty(CodegenConstants.APIS);
             }
 
             if (null != generateModels && generateModels) {
-                System.setProperty(CodegenConstants.MODELS, modelsToGenerate);
+                GeneratorProperties.setProperty(CodegenConstants.MODELS, modelsToGenerate);
             } else {
-                System.clearProperty(CodegenConstants.MODELS);
+                GeneratorProperties.clearProperty(CodegenConstants.MODELS);
             }
 
             if (null != generateSupportingFiles && generateSupportingFiles) {
-                System.setProperty(CodegenConstants.SUPPORTING_FILES, supportingFilesToGenerate);
+                GeneratorProperties.setProperty(CodegenConstants.SUPPORTING_FILES, supportingFilesToGenerate);
             } else {
-                System.clearProperty(CodegenConstants.SUPPORTING_FILES);
+                GeneratorProperties.clearProperty(CodegenConstants.SUPPORTING_FILES);
             }
 
-            System.setProperty(CodegenConstants.MODEL_TESTS, generateModelTests.toString());
-            System.setProperty(CodegenConstants.MODEL_DOCS, generateModelDocumentation.toString());
-            System.setProperty(CodegenConstants.API_TESTS, generateApiTests.toString());
-            System.setProperty(CodegenConstants.API_DOCS, generateApiDocumentation.toString());
-            System.setProperty(CodegenConstants.WITH_XML, withXml.toString());
+            GeneratorProperties.setProperty(CodegenConstants.MODEL_TESTS, generateModelTests.toString());
+            GeneratorProperties.setProperty(CodegenConstants.MODEL_DOCS, generateModelDocumentation.toString());
+            GeneratorProperties.setProperty(CodegenConstants.API_TESTS, generateApiTests.toString());
+            GeneratorProperties.setProperty(CodegenConstants.API_DOCS, generateApiDocumentation.toString());
+            GeneratorProperties.setProperty(CodegenConstants.WITH_XML, withXml.toString());
 
             if (configOptions != null) {
                 // Retained for backwards-compataibility with configOptions -> instantiation-types
@@ -593,13 +634,13 @@ public class CodeGenMojo extends AbstractMojo {
             if (environmentVariables != null) {
 
                 for (String key : environmentVariables.keySet()) {
-                    originalEnvironmentVariables.put(key, System.getProperty(key));
+                    originalEnvironmentVariables.put(key, GeneratorProperties.getProperty(key));
                     String value = environmentVariables.get(key);
                     if (value == null) {
                         // don't put null values
                         value = "";
                     }
-                    System.setProperty(key, value);
+                    GeneratorProperties.setProperty(key, value);
                     configurator.addSystemProperty(key, value);
                 }
             }
@@ -680,9 +721,9 @@ public class CodeGenMojo extends AbstractMojo {
         // when running the plugin multiple consecutive times with different configurations.
         for (Map.Entry<String, String> entry : originalEnvironmentVariables.entrySet()) {
             if (entry.getValue() == null) {
-                System.clearProperty(entry.getKey());
+                GeneratorProperties.clearProperty(entry.getKey());
             } else {
-                System.setProperty(entry.getKey(), entry.getValue());
+                GeneratorProperties.setProperty(entry.getKey(), entry.getValue());
             }
         }
     }

modules/openapi-generator-online/pom.xml

@@ -3,7 +3,7 @@
     <parent>
         <groupId>org.openapitools</groupId>
         <artifactId>openapi-generator-project</artifactId>
-        <version>3.3.4</version>
+        <version>4.0.0-SNAPSHOT</version>
         <relativePath>../..</relativePath>
     </parent>
     <artifactId>openapi-generator-online</artifactId>
@@ -13,7 +13,9 @@
         <java.version>1.8</java.version>
         <maven.compiler.source>${java.version}</maven.compiler.source>
         <maven.compiler.target>${java.version}</maven.compiler.target>
+        <spring-boot-version>2.0.7.RELEASE</spring-boot-version>
         <springfox-version>2.8.0</springfox-version>
+        <junit-version>4.12</junit-version>
     </properties>
     <dependencyManagement>
         <dependencies>
@@ -85,5 +87,23 @@
             <artifactId>openapi-generator</artifactId>
             <version>${project.parent.version}</version>
         </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-test</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.hamcrest</groupId>
+            <artifactId>java-hamcrest</artifactId>
+            <version>2.0.0.0</version>
+            <scope>test</scope>
+        </dependency>
+
     </dependencies>
 </project>

modules/openapi-generator-online/src/main/java/org/openapitools/codegen/online/service/GenApiService.java

@@ -69,12 +69,8 @@ public class GenApiService implements GenApiDelegate {
         servers.sort(String.CASE_INSENSITIVE_ORDER);
     }
 
-    private final NativeWebRequest request;
-
     @Autowired
-    public GenApiService(NativeWebRequest request) {
-        this.request = request;
-    }
+    private NativeWebRequest request;
 
     @Override
     public Optional<NativeWebRequest> getRequest() {

modules/openapi-generator-online/src/main/java/org/openapitools/codegen/online/service/Generator.java

@@ -50,7 +50,7 @@ public class Generator {
         try {
             config = CodegenConfigLoader.forName(language);
         } catch (Exception e) {
-            throw new ResponseStatusException(HttpStatus.BAD_REQUEST, String.format(Locale.ROOT,"Unsupported target %s supplied. %s",
+            throw new ResponseStatusException(HttpStatus.NOT_FOUND, String.format(Locale.ROOT,"Unsupported target %s supplied. %s",
                     language, e));
         }
         Map<String, CliOption> map = new LinkedHashMap<>();

modules/openapi-generator-online/src/test/java/org/openapitools/codegen/online/api/GenApiControllerTest.java

@@ -0,0 +1,129 @@
+package org.openapitools.codegen.online.api;
+
+import com.fasterxml.jackson.databind.ObjectMapper;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.openapitools.codegen.online.model.ResponseCode;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.web.servlet.WebMvcTest;
+import org.springframework.http.HttpHeaders;
+import org.springframework.http.MediaType;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+
+import static org.hamcrest.Matchers.hasItem;
+import static org.hamcrest.Matchers.not;
+import static org.hamcrest.text.MatchesPattern.matchesPattern;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.get;
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.*;
+
+@RunWith(SpringRunner.class)
+@WebMvcTest(GenApiController.class)
+public class GenApiControllerTest {
+
+    private static final String OPENAPI_URL = "http://petstore.swagger.io/v2/swagger.json";
+    private static final String UUID_REGEX = "[a-fA-F0-9]{8}-[a-fA-F0-9]{4}-4[a-fA-F0-9]{3}-[89aAbB][a-fA-F0-9]{3}-[a-fA-F0-9]{12}";
+
+    @Autowired
+    private MockMvc mockMvc;
+
+
+    @Test
+    public void clientLanguages() throws Exception {
+        getLanguages("clients", "java");
+    }
+
+    @Test
+    public void serverFrameworks() throws Exception {
+        getLanguages("servers", "spring");
+    }
+
+
+    public void getLanguages(String type, String expected) throws Exception {
+        mockMvc.perform(get("/api/gen/" + type))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))
+                .andExpect(jsonPath("$.[*]").value(hasItem(expected)));
+    }
+
+    @Test
+    public void clientOptions() throws Exception {
+        getOptions("clients", "java");
+    }
+
+    @Test
+    public void clientOptionsUnknown() throws Exception {
+        mockMvc.perform(get("/api/gen/clients/unknown"))
+                .andExpect(status().isNotFound());
+    }
+
+    @Test
+    public void serverOptions() throws Exception {
+        getOptions("servers", "spring");
+    }
+
+    @Test
+    public void serverOptionsUnknown() throws Exception {
+        mockMvc.perform(get("/api/gen/servers/unknown"))
+                .andExpect(status().isNotFound());
+    }
+
+    private void getOptions(String type, String name) throws Exception {
+        mockMvc.perform(get("/api/gen/" + type + "/" + name))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))
+                .andExpect(jsonPath("$.sortParamsByRequiredFlag.opt").value("sortParamsByRequiredFlag"));
+    }
+
+    @Test
+    public void generateClient() throws Exception {
+        generateAndDownload("clients", "java");
+    }
+
+    @Test
+    public void generateServer() throws Exception {
+        generateAndDownload("servers", "spring");
+    }
+
+    private void generateAndDownload(String type, String name) throws Exception {
+        String result = mockMvc.perform(post("http://test.com:1234/api/gen/" + type + "/" + name)
+                .contentType(MediaType.APPLICATION_JSON_UTF8)
+                .content("{\"openAPIUrl\": \"" + OPENAPI_URL + "\"}"))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))
+                .andExpect(jsonPath("$.code").value(matchesPattern(UUID_REGEX)))
+                .andExpect(jsonPath("$.link").value(matchesPattern("http\\:\\/\\/test.com\\:1234\\/api\\/gen\\/download\\/" + UUID_REGEX)))
+                .andReturn().getResponse().getContentAsString();
+
+        String code = new ObjectMapper().readValue(result, ResponseCode.class).getCode();
+
+        mockMvc.perform(get("http://test.com:1234/api/gen/download/" + code))
+                .andExpect(content().contentType("application/zip"))
+                .andExpect(status().isOk())
+                .andExpect(header().string(HttpHeaders.CONTENT_LENGTH, not(0)));
+    }
+
+    @Test
+    public void generateWIthForwardedHeaders() throws Exception {
+        String result = mockMvc.perform(post("http://test.com:1234/api/gen/clients/java")
+                .contentType(MediaType.APPLICATION_JSON_UTF8)
+                .header("X-Forwarded-Proto", "https")
+                .header("X-Forwarded-Host", "forwarded.com")
+                .header("X-Forwarded-Port", "5678")
+                .content("{\"openAPIUrl\": \"" + OPENAPI_URL + "\"}"))
+                .andExpect(status().isOk())
+                .andExpect(content().contentType(MediaType.APPLICATION_JSON_UTF8))
+                .andExpect(jsonPath("$.code").value(matchesPattern(UUID_REGEX)))
+                .andExpect(jsonPath("$.link").value(matchesPattern("https\\:\\/\\/forwarded.com\\:5678\\/api\\/gen\\/download\\/" + UUID_REGEX)))
+                .andReturn().getResponse().getContentAsString();
+
+        String code = new ObjectMapper().readValue(result, ResponseCode.class).getCode();
+
+        mockMvc.perform(get("http://test.com:1234/api/gen/download/" + code))
+                .andExpect(content().contentType("application/zip"))
+                .andExpect(status().isOk())
+                .andExpect(header().string(HttpHeaders.CONTENT_LENGTH, not(0)));
+    }
+
+}