Examples of javax.lang.model.type.TypeMirror

javax.lang.model.type.TypeMirror
Represents a type in the Java programming language. Types include primitive types, declared types (class and interface types), array types, type variables, and the null type. Also represented are wildcard type arguments, the signature and return types of executables, and pseudo-types corresponding to packages and to the keyword {@code void}.
Types should be compared using the utility methods in {@link Types}. There is no guarantee that any particular type will always be represented by the same object.
To implement operations based on the class of an {@code TypeMirror} object, either use a {@linkplain TypeVisitor visitor}or use the result of the {@link #getKind} method. Using {@code instanceof} is not necessarily a reliable idiom fordetermining the effective class of an object in this modeling hierarchy since an implementation may choose to have a single object implement multiple {@code TypeMirror} subinterfaces. @author Joseph D. Darcy @author Scott Seligman @author Peter von der Ahé @see Element @see Types @since 1.6

    for ( Element elem : element.getEnclosedElements() ) {
      if ( !expectedElementKind.equals( elem.getKind() ) ) {
        continue;
      }


      TypeMirror mirror;
      String name = elem.getSimpleName().toString();
      if ( ElementKind.METHOD.equals( elem.getKind() ) ) {
        name = StringUtil.getPropertyName( name );
        mirror = ( ( ExecutableElement ) elem ).getReturnType();
      }
      else {
        mirror = elem.asType();
      }


      if ( name == null || !name.equals( propertyName ) ) {
        continue;
      }


      if ( explicitTargetEntity != null ) {
        // TODO should there be a check of the target entity class and if it is loadable?
        return explicitTargetEntity;
      }


      switch ( mirror.getKind() ) {
        case INT: {
          return "java.lang.Integer";
        }
        case LONG: {
          return "java.lang.Long";
        }
        case BOOLEAN: {
          return "java.lang.Boolean";
        }
        case BYTE: {
          return "java.lang.Byte";
        }
        case SHORT: {
          return "java.lang.Short";
        }
        case CHAR: {
          return "java.lang.Char";
        }
        case FLOAT: {
          return "java.lang.Float";
        }
        case DOUBLE: {
          return "java.lang.Double";
        }
        case DECLARED: {
          return mirror.toString();
        }
        case TYPEVAR: {
          return mirror.toString();
        }
      }
    }


    context.logMessage(

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    for ( MetaEntity entity : entities ) {
      if ( entity.equals( containedEntity ) ) {
        continue;
      }
      for ( Element subElement : ElementFilter.fieldsIn( entity.getTypeElement().getEnclosedElements() ) ) {
        TypeMirror mirror = subElement.asType();
        if ( !TypeKind.DECLARED.equals( mirror.getKind() ) ) {
          continue;
        }
        boolean contains = mirror.accept( visitor, subElement );
        if ( contains ) {
          return true;
        }
      }
      for ( Element subElement : ElementFilter.methodsIn( entity.getTypeElement().getEnclosedElements() ) ) {
        TypeMirror mirror = subElement.asType();
        if ( !TypeKind.DECLARED.equals( mirror.getKind() ) ) {
          continue;
        }
        boolean contains = mirror.accept( visitor, subElement );
        if ( contains ) {
          return true;
        }
      }
    }

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      TypeElement returnedElement = (TypeElement) context.getTypeUtils().asElement( declaredType );


      String fqNameOfReturnType = returnedElement.getQualifiedName().toString();
      String collection = Constants.COLLECTIONS.get( fqNameOfReturnType );
      if ( collection != null ) {
        TypeMirror collectionElementType = TypeUtils.getCollectionElementType(
            declaredType, fqNameOfReturnType, null, context
        );
        returnedElement = (TypeElement) context.getTypeUtils().asElement( collectionElementType );
      }

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      String string = element.getSimpleName().toString();
      if ( !StringUtil.isPropertyName( string ) ) {
        return Boolean.FALSE;
      }


      TypeMirror returnType = t.getReturnType();
      return returnType.accept( this, element );
    }

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    }
    return type.toString();
  }


  public static TypeElement getSuperclassTypeElement(TypeElement element) {
    final TypeMirror superClass = element.getSuperclass();
    //superclass of Object is of NoType which returns some other kind
    if ( superClass.getKind() == TypeKind.DECLARED ) {
      //F..king Ch...t Have those people used their horrible APIs even once?
      final Element superClassElement = ( (DeclaredType) superClass ).asElement();
      return (TypeElement) superClassElement;
    }
    else {

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    }
  }


  public static String extractClosestRealTypeAsString(TypeMirror type, Context context) {
    if ( type instanceof TypeVariable ) {
      final TypeMirror compositeUpperBound = ( (TypeVariable) type ).getUpperBound();
      return extractClosestRealTypeAsString( compositeUpperBound, context );
    }
    else {
      return context.getTypeUtils().erasure( type ).toString();
    }

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    accessTypeInfo = new AccessTypeInformation( fqcn, null, defaultAccessType );
    context.addAccessTypeInformation( fqcn, accessTypeInfo );
  }


  public static TypeMirror getCollectionElementType(DeclaredType t, String fqNameOfReturnedType, String explicitTargetEntityName, Context context) {
    TypeMirror collectionElementType;
    if ( explicitTargetEntityName != null ) {
      Elements elements = context.getElementUtils();
      TypeElement element = elements.getTypeElement( explicitTargetEntityName );
      collectionElementType = element.asType();
    }

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  }


  private static void printClassDeclaration(MetaEntity entity, PrintWriter pw, Context context) {
    pw.print( "public abstract class " + entity.getSimpleName() + META_MODEL_CLASS_NAME_SUFFIX );


    final TypeMirror superClass = entity.getTypeElement().getSuperclass();
    //superclass of Object is of NoType which returns some other kind
    if ( superClass.getKind() == TypeKind.DECLARED ) {
      //F..king Ch...t Have those people used their horrible APIs even once?
      final Element superClassElement = ( (DeclaredType) superClass ).asElement();
      String superClassName = ( (TypeElement) superClassElement ).getQualifiedName().toString();
      if ( extendsSuperMetaModel( superClassElement, entity.isMetaComplete(), context ) ) {
        pw.print( " extends " + superClassName + META_MODEL_CLASS_NAME_SUFFIX );

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      String string = p.getSimpleName().toString();
      if ( !StringUtil.isPropertyName( string ) ) {
        return null;
      }


      TypeMirror returnType = t.getReturnType();
      return returnType.accept( this, p );
    }

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    return new AnnotationMetaSingleAttribute( entity, element, TypeUtils.toTypeString( t ) );
  }


  public AnnotationMetaAttribute visitTypeVariable(TypeVariable t, Element element) {
    // METAGEN-29 - for a type variable we use the upper bound
    TypeMirror mirror = t.getUpperBound();
    TypeMirror erasedType = context.getTypeUtils().erasure( mirror );
    return new AnnotationMetaSingleAttribute(
        entity, element, erasedType.toString()
    );
  }

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