feat: adding support to change the collection type for arrays in Java models

docs/usage.md

@@ -433,11 +433,11 @@ Generates typed models
 USAGE
   $ asyncapi generate models LANGUAGE FILE [-h] [--no-interactive] [-o <value>] [--tsModelType class|interface]
     [--tsEnumType enum|union] [--tsModuleSystem ESM|CJS] [--tsIncludeComments] [--tsExportType default|named]
-    [--tsJsonBinPack] [--tsMarshalling] [--tsExampleInstance] [--tsRawPropertyNames] [--packageName <value>]
-    [--javaIncludeComments] [--javaJackson] [--javaConstraints] [--namespace <value>] [--csharpAutoImplement]
-    [--csharpNewtonsoft] [--csharpArrayType Array|List] [--csharpHashcode] [--csharpEqual] [--csharpSystemJson]
-    [--log-diagnostics] [--diagnostics-format json|stylish|junit|html|text|teamcity|pretty] [--fail-severity
-    error|warn|info|hint]
+    [--tsJsonBinPack] [--tsMarshalling] [--tsExampleInstance] [--tsRawPropertyNames] [--packageName <value>] 
+    [--javaIncludeComments] [--javaJackson] [--javaConstraints] [--javaArrayType Array|List] [--namespace <value>]
+    [--csharpAutoImplement] [--csharpNewtonsoft] [--csharpArrayType Array|List] [--csharpHashcode] [--csharpEqual]
+    [--csharpSystemJson] [--log-diagnostics] [--diagnostics-format json|stylish|junit|html|text|teamcity|pretty]
+    [--fail-severity error|warn|info|hint]
 
 ARGUMENTS
   LANGUAGE  (typescript|csharp|golang|java|javascript|dart|python|rust|kotlin|php|cplusplus) The language you want the
@@ -460,6 +460,8 @@ FLAGS
       --fail-severity=<option>       [default: error] diagnostics of this level or above will trigger a failure exit
                                      code
                                      <options: error|warn|info|hint>
+      --javaArrayType=<option>       [default: Array] Java specific, define which type of array needs to be generated.
+                                     <options: Array|List>
       --javaConstraints              Java specific, generate the models with constraints
       --javaIncludeComments          Java specific, if enabled add comments while generating models.
       --javaJackson                  Java specific, generate the models with Jackson serialization support

src/commands/generate/models.ts

@@ -127,6 +127,13 @@ export default class Models extends Command {
       required: false,
       default: false
     }),
+    javaArrayType: Flags.string({
+      type: 'option',
+      description: 'Java specific, define which type of array needs to be generated.',
+      options: ['Array', 'List'],
+      required: false,
+      default: 'Array'
+    }),
 
     /**
      * C++ and C# and PHP specific namespace to use for the generated models
@@ -178,7 +185,7 @@ export default class Models extends Command {
   async run() {
     const { args, flags } = await this.parse(Models);
 
-    const { tsModelType, tsEnumType, tsIncludeComments, tsModuleSystem, tsExportType, tsJsonBinPack, tsMarshalling, tsExampleInstance, tsRawPropertyNames, namespace, csharpAutoImplement, csharpArrayType, csharpNewtonsoft, csharpHashcode, csharpEqual, csharpSystemJson, packageName, javaIncludeComments, javaJackson, javaConstraints } = flags;
+    const { tsModelType, tsEnumType, tsIncludeComments, tsModuleSystem, tsExportType, tsJsonBinPack, tsMarshalling, tsExampleInstance, tsRawPropertyNames, namespace, csharpAutoImplement, csharpArrayType, csharpNewtonsoft, csharpHashcode, csharpEqual, csharpSystemJson, packageName, javaIncludeComments, javaJackson, javaConstraints, javaArrayType } = flags;
     let { language, file } = args;
     let output = flags.output || 'stdout';
     const interactive = !flags['no-interactive'];
@@ -327,7 +334,12 @@ export default class Models extends Command {
       if (javaIncludeComments) {presets.push(JAVA_DESCRIPTION_PRESET);}
       if (javaJackson) {presets.push(JAVA_JACKSON_PRESET);}
       if (javaConstraints) {presets.push(JAVA_CONSTRAINTS_PRESET);}
-      fileGenerator = new JavaFileGenerator({ presets });
+
+      fileGenerator = new JavaFileGenerator({
+        presets,
+        collectionType: javaArrayType as 'Array' | 'List'
+      });
+
       fileOptions = {
         packageName
       };

test/integration/generate/models.test.ts

@@ -284,6 +284,16 @@ describe('models', () => {
         expect(ctx.stderr).to.contain('Error: In order to generate models to Java, we need to know which package they are under. Add `--packageName=PACKAGENAME` to set the desired package name.\n');
         done();
       });
+    test
+      .stderr()
+      .stdout()
+      .command([...generalOptions, 'java', './test/fixtures/specification.yml', `-o=${ path.resolve(outputDir, './java')}`, '--packageName', 'test.pkg', '--javaArrayType=List'])
+      .it('works when array type is provided', (ctx, done) => {
+        expect(ctx.stdout).to.contain(
+          'Successfully generated the following models: '
+        );
+        done();
+      });
   });
 
   describe('for Go', () => {