Add new option to customize inline model naming convention (#12562)

* temp fix

* add support to customize inline schema naming convention

* Revert "temp fix"

This reverts commit e3bca56bfb.

* minor fix, add tests

* update description

modules/openapi-generator-core/src/main/java/org/openapitools/codegen/config/GeneratorSettings.java

@@ -51,6 +51,7 @@ public final class GeneratorSettings implements Serializable {
     private final Map<String, Object> additionalProperties;
     private final Map<String, String> importMappings;
     private final Map<String, String> inlineSchemaNameMappings;
+    private final Map<String, String> inlineSchemaNameDefaults;
     private final Set<String> languageSpecificPrimitives;
     private final Map<String, String> reservedWordsMappings;
     private final Map<String, String> serverVariables;
@@ -244,6 +245,15 @@ public final class GeneratorSettings implements Serializable {
         return inlineSchemaNameMappings;
     }
 
+    /**
+     * Gets inline schema name defaults between an inline schema naming convention and the default values.
+     *
+     * @return the inline schema name defaults
+     */
+    public Map<String, String> getInlineSchemaNameDefaults() {
+        return inlineSchemaNameDefaults;
+    }
+
     /**
      * Gets language specific primitives. These are in addition to the "base" primitives defined in a generator.
      * <p>
@@ -360,6 +370,7 @@ public final class GeneratorSettings implements Serializable {
         typeMappings = Collections.unmodifiableMap(builder.typeMappings);
         importMappings = Collections.unmodifiableMap(builder.importMappings);
         inlineSchemaNameMappings = Collections.unmodifiableMap(builder.inlineSchemaNameMappings);
+        inlineSchemaNameDefaults = Collections.unmodifiableMap(builder.inlineSchemaNameDefaults);
         languageSpecificPrimitives = Collections.unmodifiableSet(builder.languageSpecificPrimitives);
         reservedWordsMappings = Collections.unmodifiableMap(builder.reservedWordsMappings);
         serverVariables = Collections.unmodifiableMap(builder.serverVariables);
@@ -431,6 +442,7 @@ public final class GeneratorSettings implements Serializable {
         additionalProperties = Collections.unmodifiableMap(new HashMap<>(0));
         importMappings = Collections.unmodifiableMap(new HashMap<>(0));
         inlineSchemaNameMappings = Collections.unmodifiableMap(new HashMap<>(0));
+        inlineSchemaNameDefaults = Collections.unmodifiableMap(new HashMap<>(0));
         languageSpecificPrimitives = Collections.unmodifiableSet(new HashSet<>(0));
         reservedWordsMappings = Collections.unmodifiableMap(new HashMap<>(0));
         serverVariables = Collections.unmodifiableMap(new HashMap<>(0));
@@ -485,6 +497,9 @@ public final class GeneratorSettings implements Serializable {
         if (copy.getInlineSchemaNameMappings() != null) {
             builder.inlineSchemaNameMappings.putAll(copy.getInlineSchemaNameMappings());
         }
+        if (copy.getInlineSchemaNameDefaults() != null) {
+            builder.inlineSchemaNameDefaults.putAll(copy.getInlineSchemaNameDefaults());
+        }
         if (copy.getLanguageSpecificPrimitives() != null) {
             builder.languageSpecificPrimitives.addAll(copy.getLanguageSpecificPrimitives());
         }
@@ -525,6 +540,7 @@ public final class GeneratorSettings implements Serializable {
         private Map<String, Object> additionalProperties;
         private Map<String, String> importMappings;
         private Map<String, String> inlineSchemaNameMappings;
+        private Map<String, String> inlineSchemaNameDefaults;
         private Set<String> languageSpecificPrimitives;
         private Map<String, String> reservedWordsMappings;
         private Map<String, String> serverVariables;
@@ -543,6 +559,7 @@ public final class GeneratorSettings implements Serializable {
             additionalProperties = new HashMap<>();
             importMappings = new HashMap<>();
             inlineSchemaNameMappings = new HashMap<>();
+            inlineSchemaNameDefaults = new HashMap<>();
             languageSpecificPrimitives = new HashSet<>();
             reservedWordsMappings = new HashMap<>();
             serverVariables = new HashMap<>();
@@ -785,6 +802,32 @@ public final class GeneratorSettings implements Serializable {
             return this;
         }
 
+        /**
+         * Sets the {@code inlineSchemaNameDefaults} and returns a reference to this Builder so that the methods can be chained together.
+         *
+         * @param inlineSchemaNameDefaults the {@code inlineSchemaNameDefaults} to set
+         * @return a reference to this Builder
+         */
+        public Builder withInlineSchemaNameDefaults(Map<String, String> inlineSchemaNameDefaults) {
+            this.inlineSchemaNameDefaults = inlineSchemaNameDefaults;
+            return this;
+        }
+
+        /**
+         * Sets a single {@code inlineSchemaNameDefaults} and returns a reference to this Builder so that the methods can be chained together.
+         *
+         * @param key   Default naming convention
+         * @param value The value
+         * @return a reference to this Builder
+         */
+        public Builder withInlineSchemaNameDefault(String key, String value) {
+            if (this.inlineSchemaNameDefaults == null) {
+                this.inlineSchemaNameDefaults = new HashMap<>();
+            }
+            this.inlineSchemaNameDefaults.put(key, value);
+            return this;
+        }
+
         /**
          * Sets the {@code inlineSchemaNameMappings} and returns a reference to this Builder so that the methods can be chained together.
          *
@@ -799,8 +842,8 @@ public final class GeneratorSettings implements Serializable {
         /**
          * Sets a single {@code inlineSchemaNameMappings} and returns a reference to this Builder so that the methods can be chained together.
          *
-         * @param key   A key for some import mapping
-         * @param value The value of some import mapping
+         * @param key   A key for the inline schema mapping
+         * @param value The value of inline schema mapping
          * @return a reference to this Builder
          */
         public Builder withInlineSchemaNameMapping(String key, String value) {
@@ -997,6 +1040,7 @@ public final class GeneratorSettings implements Serializable {
                 Objects.equals(getAdditionalProperties(), that.getAdditionalProperties()) &&
                 Objects.equals(getImportMappings(), that.getImportMappings()) &&
                 Objects.equals(getInlineSchemaNameMappings(), that.getInlineSchemaNameMappings()) &&
+                Objects.equals(getInlineSchemaNameDefaults(), that.getInlineSchemaNameDefaults()) &&
                 Objects.equals(getLanguageSpecificPrimitives(), that.getLanguageSpecificPrimitives()) &&
                 Objects.equals(getReservedWordsMappings(), that.getReservedWordsMappings()) &&
                 Objects.equals(getGitHost(), that.getGitHost()) &&
@@ -1026,6 +1070,7 @@ public final class GeneratorSettings implements Serializable {
                 getAdditionalProperties(),
                 getImportMappings(),
                 getInlineSchemaNameMappings(),
+                getInlineSchemaNameDefaults(),
                 getLanguageSpecificPrimitives(),
                 getReservedWordsMappings(),
                 getGitHost(),