Add original enumPropertyNamingType config for java enum generation (#20824)

2025-04-27 09:00:51 +02:00 · 2025-04-27 09:00:51 +02:00 · f656afcde3
commit f656afcde3
parent de310f6ee1
27 changed files with 53 additions and 27 deletions
--- a/docs/generators/groovy.md
+++ b/docs/generators/groovy.md
@ -38,7 +38,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-camel.md
+++ b/docs/generators/java-camel.md
@ -54,7 +54,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd><dt>**springfox**</dt><dd>Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using SpringFox 2.x. Deprecated (for removal); use springdoc instead.</dd><dt>**springdoc**</dt><dd>Generate an OpenAPI 3 specification using SpringDoc.</dd></dl>|springdoc|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-helidon-client.md
+++ b/docs/generators/java-helidon-client.md
@ -36,7 +36,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |fullProject|If set to true, it will generate all files; if set to false, it will only generate API files. If unspecified, the behavior depends on whether a project exists or not: if it does not, same as true; if it does, same as false. Note that test files are never overwritten.| ||
 |generateBuilders|Whether to generate builders for models| |false|
--- a/docs/generators/java-helidon-server.md
+++ b/docs/generators/java-helidon-server.md
@ -35,7 +35,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |fullProject|If set to true, it will generate all files; if set to false, it will only generate API files. If unspecified, the behavior depends on whether a project exists or not: if it does not, same as true; if it does, same as false. Note that test files are never overwritten.| ||
 |generateBuilders|Whether to generate builders for models| |false|
--- a/docs/generators/java-inflector.md
+++ b/docs/generators/java-inflector.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-micronaut-client.md
+++ b/docs/generators/java-micronaut-client.md
@ -49,7 +49,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-micronaut-server.md
+++ b/docs/generators/java-micronaut-server.md
@ -44,7 +44,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-microprofile.md
+++ b/docs/generators/java-microprofile.md
@ -47,7 +47,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd></dl>|source|
 |dynamicOperations|Generate operations dynamically at runtime from an OAS| |false|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |errorObjectType|Error Object type. (This option is for okhttp-gson only)| |null|
 |failOnUnknownProperties|Fail Jackson de-serialization on unknown properties| |false|
--- a/docs/generators/java-msf4j.md
+++ b/docs/generators/java-msf4j.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-pkmst.md
+++ b/docs/generators/java-pkmst.md
@ -41,7 +41,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |eurekaUri|Eureka URI| |null|
 |generateBuilders|Whether to generate builders for models| |false|
--- a/docs/generators/java-play-framework.md
+++ b/docs/generators/java-play-framework.md
@ -43,7 +43,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-undertow-server.md
+++ b/docs/generators/java-undertow-server.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-vertx-web.md
+++ b/docs/generators/java-vertx-web.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-vertx.md
+++ b/docs/generators/java-vertx.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java-wiremock.md
+++ b/docs/generators/java-wiremock.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/java.md
+++ b/docs/generators/java.md
@ -47,7 +47,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd></dl>|source|
 |dynamicOperations|Generate operations dynamically at runtime from an OAS| |false|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |errorObjectType|Error Object type. (This option is for okhttp-gson only)| |null|
 |failOnUnknownProperties|Fail Jackson de-serialization on unknown properties| |false|
--- a/docs/generators/jaxrs-cxf-cdi.md
+++ b/docs/generators/jaxrs-cxf-cdi.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-cxf-client.md
+++ b/docs/generators/jaxrs-cxf-client.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-cxf-extended.md
+++ b/docs/generators/jaxrs-cxf-extended.md
@ -41,7 +41,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-cxf.md
+++ b/docs/generators/jaxrs-cxf.md
@ -41,7 +41,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-jersey.md
+++ b/docs/generators/jaxrs-jersey.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-resteasy-eap.md
+++ b/docs/generators/jaxrs-resteasy-eap.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-resteasy.md
+++ b/docs/generators/jaxrs-resteasy.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/jaxrs-spec.md
+++ b/docs/generators/jaxrs-spec.md
@ -40,7 +40,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |disallowAdditionalPropertiesIfNotPresent|If false, the 'additionalProperties' implementation (set to true by default) is compliant with the OAS and JSON schema specifications. If true (default), keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.|<dl><dt>**false**</dt><dd>The 'additionalProperties' implementation is compliant with the OAS and JSON schema specifications.</dd><dt>**true**</dt><dd>Keep the old (incorrect) behaviour that 'additionalProperties' is set to false by default.</dd></dl>|true|
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/docs/generators/spring.md
+++ b/docs/generators/spring.md
@ -47,7 +47,7 @@ These options may be applied as additional-properties (cli) or configOptions (pl
 |discriminatorCaseSensitive|Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client| |true|
 |documentationProvider|Select the OpenAPI documentation provider.|<dl><dt>**none**</dt><dd>Do not publish an OpenAPI specification.</dd><dt>**source**</dt><dd>Publish the original input OpenAPI specification.</dd><dt>**springfox**</dt><dd>Generate an OpenAPI 2 (fka Swagger RESTful API Documentation Specification) specification using SpringFox 2.x. Deprecated (for removal); use springdoc instead.</dd><dt>**springdoc**</dt><dd>Generate an OpenAPI 3 specification using SpringDoc.</dd></dl>|springdoc|
 |ensureUniqueParams|Whether to ensure parameter names are unique in an operation (rename parameters that are not).| |true|
-|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE' and 'legacy'| |MACRO_CASE|
+|enumPropertyNaming|Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'| |MACRO_CASE|
 |enumUnknownDefaultCase|If the server adds new enum cases, that are unknown by an old spec/client, the client will fail to parse the network response.With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the server sends an enum case that is not known by the client/spec, they can safely fallback to this case.|<dl><dt>**false**</dt><dd>No changes to the enum's are made, this is the default option.</dd><dt>**true**</dt><dd>With this option enabled, each enum will have a new case, 'unknown_default_open_api', so that when the enum case sent by the server is not known by the client/spec, can safely be decoded to this case.</dd></dl>|false|
 |generateBuilders|Whether to generate builders for models| |false|
 |generateConstructorWithAllArgs|whether to generate a constructor for all arguments| |false|
--- a/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
+++ b/modules/openapi-generator/src/main/java/org/openapitools/codegen/languages/AbstractJavaCodegen.java
@ -53,6 +53,7 @@ import org.openapitools.codegen.utils.ModelUtils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;

+import javax.lang.model.SourceVersion;
 import java.io.File;
 import java.time.LocalDate;
 import java.time.ZoneId;
@ -147,9 +148,9 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
    @Getter @Setter
    protected String testFolder = projectTestFolder + "/java";

-    protected enum ENUM_PROPERTY_NAMING_TYPE {MACRO_CASE, legacy}
+    protected enum ENUM_PROPERTY_NAMING_TYPE {MACRO_CASE, legacy, original}

-    protected static final String ENUM_PROPERTY_NAMING_DESC = "Naming convention for enum properties: 'MACRO_CASE' and 'legacy'";
+    protected static final String ENUM_PROPERTY_NAMING_DESC = "Naming convention for enum properties: 'MACRO_CASE', 'legacy' and 'original'";
    @Getter protected ENUM_PROPERTY_NAMING_TYPE enumPropertyNaming = ENUM_PROPERTY_NAMING_TYPE.MACRO_CASE;

    /**
@ -2034,6 +2035,10 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
        return sanitizeName(camelize(property.name)) + "Enum";
    }

+    private boolean isValidVariableNameInVersion(CharSequence name, SourceVersion version) {
+        return SourceVersion.isIdentifier(name) && !SourceVersion.isKeyword(name, version);
+    }
+
    @Override
    public String toEnumVarName(String value, String datatype) {
        if (enumNameMapping.containsKey(value)) {
@ -2070,6 +2075,15 @@ public abstract class AbstractJavaCodegen extends DefaultCodegen implements Code
                // legacy ,e.g. WITHNUMBER1
                var = value.replaceAll("\\W+", "_").toUpperCase(Locale.ROOT);
                break;
+            case original:
+                // keep value as it is, if meets language naming convention
+                if (isValidVariableNameInVersion(value, SourceVersion.RELEASE_11)) {
+                    return value;
+                } else {
+                    LOGGER.warn("Enum value '{}' is not a valid variable name in Java 11. Enum value will be renamed.", value);
+                    var = value;
+                }
+                break;
            default:
                // default to MACRO_CASE, e.g. WITH_NUMBER1
                var = underscore(value.replaceAll("\\W+", "_")).toUpperCase(Locale.ROOT);
--- a/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java
+++ b/modules/openapi-generator/src/test/java/org/openapitools/codegen/java/AbstractJavaCodegenTest.java
@ -70,6 +70,7 @@ public class AbstractJavaCodegenTest {

    @Test
    public void toEnumVarNameShouldNotShortenUnderScore() {
+        codegen.setEnumPropertyNaming("MACRO_CASE");
        Assert.assertEquals(codegen.toEnumVarName("_", "String"), "UNDERSCORE");
        Assert.assertEquals(codegen.toEnumVarName("__", "String"), "__");
        Assert.assertEquals(codegen.toEnumVarName("_,.", "String"), "__");
@ -80,17 +81,28 @@ public class AbstractJavaCodegenTest {
     */
    @Test
    public void toEnumVarNameShouldNotResultInSingleUnderscore() {
+        codegen.setEnumPropertyNaming("MACRO_CASE");
        Assert.assertNotEquals(codegen.toEnumVarName(" ", "String"), "_");
        Assert.assertNotEquals(codegen.toEnumVarName("==", "String"), "_");
    }

    @Test
    public void toEnumVarNameAddUnderscoresIfValueIsPascalCase() {
+        codegen.setEnumPropertyNaming("MACRO_CASE");
        Assert.assertEquals(codegen.toEnumVarName("OnlyCamelCase", "String"), "ONLY_CAMEL_CASE");
        Assert.assertEquals(codegen.toEnumVarName("WithNumber1", "String"), "WITH_NUMBER1");
        Assert.assertEquals(codegen.toEnumVarName("_LeadingUnderscore", "String"), "_LEADING_UNDERSCORE");
    }

+    @Test
+    public void toEnumVarKeepOriginal() {
+        codegen.setEnumPropertyNaming(CodegenConstants.ENUM_PROPERTY_NAMING_TYPE.original.name());
+        Assert.assertEquals(codegen.toEnumVarName("IfReallyNecessary_6_Keep__Original", "String"), "IfReallyNecessary_6_Keep__Original");
+        Assert.assertEquals(codegen.toEnumVarName("this_should_Actually_not_Be_used_AS_ENUM_VALUE1", "String"), "this_should_Actually_not_Be_used_AS_ENUM_VALUE1");
+        Assert.assertEquals(codegen.toEnumVarName("There should be warning in the logger", "String"), "thereShouldBeWarningInTheLogger");
+        Assert.assertEquals(codegen.toEnumVarName("^", "String"), "CARET");
+    }
+
    @Test
    public void toVarNameShouldAvoidOverloadingGetClassMethod() {
        Assert.assertEquals(codegen.toVarName("class"), "propertyClass");