Java Tooling for Working with Aspect Models

      final AspectModel aspectModel = new AspectModelLoader().load(
            // a File, InputStream or AspectModelUrn
            new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" )
      );

      // Do something with the elements
      for ( final ModelElement element : aspectModel.elements() ) {
         System.out.printf( "Model element: %s has URN %s%n", element.getName(), element.urn() );
      }

      // Directly work with the Aspect, if the AspectModel happens to contain
      // exactly one Aspect. If there are 0 or >1 Aspects, this will throw an exception.
      System.out.println( "Aspect URN: " + aspectModel.aspect().urn() );
   }
}

// The directory containing the models folder structure,
// see models directory structure
final Path modelsRoot = Paths.get( "aspect-models" );
final ResolutionStrategy fileSystemStrategy = new FileSystemStrategy( modelsRoot );
final AspectModelUrn urn = AspectModelUrn.fromUrn( "urn:samm:org.eclipse.esmf.examples.movement:1.0.0#Movement" );
final AspectModel result = new AspectModelLoader( fileSystemStrategy ).load( urn );

final AspectModel aspectModel = new AspectModelLoader().load(
      // a File, InputStream or AspectModelUrn
);

// Do something with the Aspect Model on the RDF level.
// Example: List the URNs of all samm:Entitys
aspectModel.mergedModel().listStatements( null, RDF.type, SammNs.SAMM.Entity() )
      .forEachRemaining( statement -> System.out.println( statement.getSubject().getURI() ) );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

// A String that contains the pretty printed Aspect Model
final String aspectString =
      AspectSerializer.INSTANCE.aspectToString( aspectModel.aspect() );

AspectModelFile aspectModelFile = // ...
final String fileString =
      AspectSerializer.INSTANCE.aspectModelFileToString( aspectModelFile );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final AspectModelDiagramGenerator generator = new AspectModelDiagramGenerator( aspectModel.aspect() ); (1)

// Variant 1: Generate a diagram in SVG format using @en descriptions and preferredNames from the model
final OutputStream output = outputStreamForName( "diagram.svg" );
generator.generateDiagram( Format.SVG, Locale.ENGLISH, output ); (2)
output.close();

// Variant 2: Generate diagrams in multiple formats, for all languages that are present in the model.
generator.generateDiagrams( Set.of( Format.PNG, Format.SVG ), this::outputStreamForName ); (3)

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...
final AspectModelDocumentationGenerator generator = (1)
      new AspectModelDocumentationGenerator( aspectModel.aspect() );

final Map<HtmlGenerationOption, String> options = Map.of(); (2)
generator.generate( this::outputStreamForName, options );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final AspectModelJsonPayloadGenerator generator = new AspectModelJsonPayloadGenerator( aspectModel.aspect() );

// Variant 1: Direct generation into a String
final String jsonString = generator.generateJson();

// Variant 2: Generate using mapping function
generator.generateJson( this::outputStreamForName );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final JsonSchemaGenerationConfig config = JsonSchemaGenerationConfigBuilder.builder()
      .locale( Locale.ENGLISH )
      .build();
final JsonNode jsonSchema = AspectModelJsonSchemaGenerator.INSTANCE.apply( aspectModel.aspect(), config ).getContent();

// If needed, print or pretty print it into a string
final ByteArrayOutputStream out = new ByteArrayOutputStream();
final ObjectMapper objectMapper = new ObjectMapper();

objectMapper.writerWithDefaultPrettyPrinter().writeValue( out, jsonSchema );
final String result = out.toString();

      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final OpenApiSchemaGenerationConfig config = OpenApiSchemaGenerationConfigBuilder.builder()
            // Server URL
            .baseUrl( "http://www.example.com" )
            // The resource path which shall be added
            .resourcePath( "/testPath/{parameter}" )
            // Determines whether semantic versioning should be used for the API
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // A String containing all the information for dynamic properties mentioned in the resource path.
            // The string must be syntactically valid YAML.
            .properties( readYaml( """
                  parameter:
                    name: parameter
                    in: path
                    description: "A parameter."
                    required: true
                    schema:
                      type: string
                  """ ) )
            // Should the query API be added to the generated specification?
            .includeQueryApi( true )
            // The paging Option to be chosen. In case paging is possible:
            // The default for a time related collection is time-based paging.
            // Otherwise the default is offset-based paging.
            .pagingOption( PagingOption.OFFSET_BASED_PAGING )
            .build();

      // Generate pretty-printed YAML
      final AspectModelOpenApiGenerator generator = new AspectModelOpenApiGenerator();
      final String yaml = generator.apply( aspectModel.aspect(), config ).getContentAsYaml();
   }

   @Test
   public void generateJson() throws IOException {
      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final ObjectMapper objectMapper = new ObjectMapper();
      final OpenApiSchemaGenerationConfig config = OpenApiSchemaGenerationConfigBuilder.builder()
            // Server URL
            .baseUrl( "http://www.example.com" )
            // The resource path which shall be added
            .resourcePath( "/testPath/{parameter}" )
            // Determines whether semantic versioning should be used for the API
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // A JsonNode containing all the information for variable properties mentioned
            // in the resource path .
            .properties( readYaml( """
                     {
                       "test-Id": {
                         "name": "test-Id",
                         "in": "path",
                         "description": "The ID of the unit.",
                         "required": true,
                         "schema": {
                           "type": "string"
                         }
                       }
                     }
                  """ ) )
            // Should the query API be added to the generated specification?
            .includeQueryApi( true )
            // The paging Option to be chosen. In case paging is possible:
            // The default for a time related collection is time-based paging.
            // Otherwise the default is offset-based paging.
            .pagingOption( PagingOption.OFFSET_BASED_PAGING )
            .build();

      // Generate the JSON
      final AspectModelOpenApiGenerator generator = new AspectModelOpenApiGenerator();
      final JsonNode json = generator.apply( aspectModel.aspect(), config ).getContent();

      // If needed, print or pretty print it into a string
      final ByteArrayOutputStream out = new ByteArrayOutputStream();

      objectMapper.writerWithDefaultPrettyPrinter().writeValue( out, json );
      final String result = out.toString();
   }

   private static ObjectNode readYaml( String content ) throws JsonProcessingException {
      return (ObjectNode) new YAMLMapper().readTree( content );
   }
}

      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final ObjectMapper objectMapper = new ObjectMapper();
      final OpenApiSchemaGenerationConfig config = OpenApiSchemaGenerationConfigBuilder.builder()
            // Server URL
            .baseUrl( "http://www.example.com" )
            // The resource path which shall be added
            .resourcePath( "/testPath/{parameter}" )
            // Determines whether semantic versioning should be used for the API
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // A JsonNode containing all the information for variable properties mentioned
            // in the resource path .
            .properties( readYaml( """
                     {
                       "test-Id": {
                         "name": "test-Id",
                         "in": "path",
                         "description": "The ID of the unit.",
                         "required": true,
                         "schema": {
                           "type": "string"
                         }
                       }
                     }
                  """ ) )
            // Should the query API be added to the generated specification?
            .includeQueryApi( true )
            // The paging Option to be chosen. In case paging is possible:
            // The default for a time related collection is time-based paging.
            // Otherwise the default is offset-based paging.
            .pagingOption( PagingOption.OFFSET_BASED_PAGING )
            .build();

      // Generate the JSON
      final AspectModelOpenApiGenerator generator = new AspectModelOpenApiGenerator();
      final JsonNode json = generator.apply( aspectModel.aspect(), config ).getContent();

      // If needed, print or pretty print it into a string
      final ByteArrayOutputStream out = new ByteArrayOutputStream();

      objectMapper.writerWithDefaultPrettyPrinter().writeValue( out, json );
      final String result = out.toString();
   }

   private static ObjectNode readYaml( String content ) throws JsonProcessingException {
      return (ObjectNode) new YAMLMapper().readTree( content );
   }
}

      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final ObjectMapper yamlMapper = new YAMLMapper().enable( YAMLGenerator.Feature.MINIMIZE_QUOTES );

      final AsyncApiSchemaGenerationConfig config = AsyncApiSchemaGenerationConfigBuilder.builder()
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // Set Application id
            .applicationId( "test:serve" )
            .channelAddress( "/123-456/789-012/movement/0.0.1/Movement" )
            .build();

      // Generate pretty-printed YAML
      final AspectModelAsyncApiGenerator generator = new AspectModelAsyncApiGenerator();
      final JsonNode json = generator.apply( aspectModel.aspect(), config ).getContent();
      final String yaml = yamlMapper.writeValueAsString( json );

      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      out.write( yaml.getBytes( StandardCharsets.UTF_8 ) );

      final String result = out.toString();
   }

   @Test
   public void generateJson() throws IOException {
      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final ObjectMapper objectMapper = new ObjectMapper();
      final AsyncApiSchemaGenerationConfig config = AsyncApiSchemaGenerationConfigBuilder.builder()
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // Set Application id
            .applicationId( "test:serve" )
            .channelAddress( "/123-456/789-012/movement/0.0.1/Movement" )
            .build();

      // Generate the JSON
      final AspectModelAsyncApiGenerator generator = new AspectModelAsyncApiGenerator();
      final JsonNode json = generator.apply( aspectModel.aspect(), config ).getContent();

      // If needed, print or pretty print it into a string
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      objectMapper.writerWithDefaultPrettyPrinter().writeValue( out, json );
      final String result = out.toString();
   }
}

      // AspectModel as returned by the AspectModelLoader
      final AspectModel aspectModel = // ...
            new AspectModelLoader().load(
                  new File( "aspect-models/org.eclipse.esmf.examples.movement/1.0.0/Movement.ttl" ) );

      final ObjectMapper objectMapper = new ObjectMapper();
      final AsyncApiSchemaGenerationConfig config = AsyncApiSchemaGenerationConfigBuilder.builder()
            // i.e., true = v1.2.3, false = v1
            .useSemanticVersion( false )
            // Set Application id
            .applicationId( "test:serve" )
            .channelAddress( "/123-456/789-012/movement/0.0.1/Movement" )
            .build();

      // Generate the JSON
      final AspectModelAsyncApiGenerator generator = new AspectModelAsyncApiGenerator();
      final JsonNode json = generator.apply( aspectModel.aspect(), config ).getContent();

      // If needed, print or pretty print it into a string
      final ByteArrayOutputStream out = new ByteArrayOutputStream();
      objectMapper.writerWithDefaultPrettyPrinter().writeValue( out, json );
      final String result = out.toString();
   }
}

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final DatabricksSqlGenerationConfig databricksSqlGenerationConfig =
      DatabricksSqlGenerationConfigBuilder.builder()
            .commentLanguage( Locale.ENGLISH ) // optional
            .includeTableComment( true )       // optional
            .includeColumnComments( true )     // optional
            .decimalPrecision( 10 )            // optional
            .customColumns( List.of(           // optional
                  DatabricksColumnDefinitionBuilder.builder()
                        .name( "custom_column" )
                        .type( new DatabricksType.DatabricksArray( DatabricksType.STRING ) )
                        .nullable( false )
                        .comment( Optional.of( "Custom column" ) )
                        .build() ) )
            .build();
final SqlGenerationConfig sqlGenerationConfig =
      SqlGenerationConfigBuilder.builder()
            .dialect( SqlGenerationConfig.Dialect.DATABRICKS )
            .mappingStrategy( SqlGenerationConfig.MappingStrategy.DENORMALIZED )
            .dialectSpecificConfig( databricksSqlGenerationConfig )
            .build();
final String result = AspectModelSqlGenerator.INSTANCE.apply( aspectModel.aspect(), sqlGenerationConfig ).getContent();

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final JavaCodeGenerationConfig config = JavaCodeGenerationConfigBuilder.builder()
      .enableJacksonAnnotations( true )
      .packageName( "com.example.mycompany" ) // if left out, package is taken from Aspect's namespace
      .build();
final AspectModelJavaGenerator generator = new AspectModelJavaGenerator( aspectModel.aspect(), config );
generator.generate( qualifiedName -> {
   // Create an output stream for the given qualified Java class name
} );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final JavaCodeGenerationConfig config = JavaCodeGenerationConfigBuilder.builder()
      .enableJacksonAnnotations( true )
      .packageName( "com.example.mycompany" ) // if left out, package is taken from Aspect's namespace
      .build();
final StaticMetaModelJavaGenerator generator = new StaticMetaModelJavaGenerator( aspectModel.aspect(), config );
generator.generate( qualifiedName -> {
   // Create an output stream for the given qualified Java class name
} );

// AspectModel as returned by the AspectModelLoader
final AspectModel aspectModel = // ...

final AspectModelAasGenerator generator = new AspectModelAasGenerator();

// Generate AAS .aasx for input Aspect
generator.generate( AasFileFormat.AASX, aspect, this::outputStreamForName );
// Generate AAS .xml for input Aspect
generator.generate( AasFileFormat.XML, aspect, this::outputStreamForName );
// Generate AAS .json for input Aspect
generator.generate( AasFileFormat.JSON, aspect, this::outputStreamForName );

final File file = // an AAS file that ends in .aasx, .xml or .json

// Multiple "from" methods are available: fromFile (which checks the file extension),
// fromAasJson, fromAasXml, fromAasx as well as fromEnvironment (for an AAS4J AAS environment)
final AasToAspectModelGenerator generator = AasToAspectModelGenerator.fromFile( file );
final List<Aspect> aspects = generator.generateAspects();
aspects.forEach( aspect -> {
   // do something with the generated aspect
} );