Examples of javax.lang.model.type.DeclaredType

javax.lang.model.type.DeclaredType
Represents a declared type, either a class type or an interface type. This includes parameterized types such as {@code java.util.Set}as well as raw types.
While a {@code TypeElement} represents a class or interfaceelement, a {@code DeclaredType} represents a classor interface type, the latter being a use (or invocation) of the former. See {@link TypeElement} for more on this distinction.
The supertypes (both class and interface types) of a declared type may be found using the {@link Types#directSupertypes(TypeMirror)} method. This returns thesupertypes with any type arguments substituted in. @author Joseph D. Darcy @author Scott Seligman @author Peter von der Ahé @see TypeElement @since 1.6


    public TypeMirror erasure(TypeMirror t) {
        Types tu = env.getTypeUtils();
        t = tu.erasure(t);
        if (t.getKind().equals(TypeKind.DECLARED)) {
            DeclaredType dt = (DeclaredType)t;
            if (!dt.getTypeArguments().isEmpty())
                return tu.getDeclaredType((TypeElement) dt.asElement());
        }
        return t;
    }

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        throw new IllegalArgumentException();
    }


    public TypeMirror getTypeArgument(TypeMirror typeMirror, int i) {
        if (typeMirror != null && typeMirror.getKind().equals(TypeKind.DECLARED)) {
            DeclaredType declaredType = (DeclaredType) typeMirror;
            TypeMirror[] args = declaredType.getTypeArguments().toArray(new TypeMirror[declaredType.getTypeArguments().size()]);
            return args[i];
        } else throw new IllegalArgumentException();
    }

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        } else throw new IllegalArgumentException();
    }


    public boolean isParameterizedType(TypeMirror typeMirror) {
        if (typeMirror != null && typeMirror.getKind().equals(TypeKind.DECLARED)) {
            DeclaredType d = (DeclaredType) typeMirror;
            return !d.getTypeArguments().isEmpty();
        }
        return false;
    }

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    AnnotationValue nullableValue = AnnotationProcessingUtils
        .getAnnotationElementValue(procEnv, annotation, "nullable");
    AnnotationValue scopeValue = AnnotationProcessingUtils
        .getAnnotationElementValue(procEnv, annotation, "scope");


    DeclaredType referencedAnnotationClass = (DeclaredType) referencedAnnotationClassValue
        .getValue();
    TypeElement referencedAnnotationTypeElement = (TypeElement) referencedAnnotationClass
        .asElement();
    ConstraintScope scope = ConstraintScope.valueOf(scopeValue.getValue()
        .toString());
    Boolean nullable = Boolean.valueOf(nullableValue.getValue().toString());
    Map<Element, Set<Element>> elements = new HashMap<Element, Set<Element>>();

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    }


    public Map<MethodSymbol, Attribute> getElementValuesWithDefaults(
                                                        AnnotationMirror a) {
        Attribute.Compound anno = cast(Attribute.Compound.class, a);
        DeclaredType annotype = a.getAnnotationType();
        Map<MethodSymbol, Attribute> valmap = anno.getElementValues();


        for (ExecutableElement ex :
                 methodsIn(annotype.asElement().getEnclosedElements())) {
            MethodSymbol meth = (MethodSymbol) ex;
            Attribute defaultValue = meth.getDefaultValue();
            if (defaultValue != null && !valmap.containsKey(meth)) {
                valmap.put(meth, defaultValue);
            }

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        Set<Element> result = Collections.emptySet();
        Types typeUtil = processingEnv.getTypeUtils();
        if (a.getKind() != ElementKind.ANNOTATION_TYPE)
            throw new IllegalArgumentException(NOT_AN_ANNOTATION_TYPE + a);


        DeclaredType annotationTypeElement;
        TypeMirror tm = a.asType();
        if ( tm instanceof DeclaredType )
            annotationTypeElement = (DeclaredType) a.asType();
        else
            throw new AssertionError("Bad implementation type for " + tm);

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    // resolve type parameters, if any
    ExecutableType xType = viewIn(checkedElement, x, state);
    TypeMirror returnType = xType.getReturnType();
    if (state.types.isAssignable(returnType, state.requestType)) {
      // Extract Request<Foo> type
      DeclaredType asRequest = (DeclaredType) State.viewAs(state.requestType, returnType, state);
      if (asRequest.getTypeArguments().isEmpty()) {
        state.poison(x, Messages.rawType());
      } else {
        TypeMirror requestReturn = asRequest.getTypeArguments().get(0);
        if (!state.isTransportableType(requestReturn)) {
          state.poison(x, Messages.untransportableType(requestReturn));
        }
      }
    } else if (state.types.isAssignable(returnType, state.instanceRequestType)) {
      // Extract InstanceRequest<FooProxy, String>
      DeclaredType asInstanceRequest =
          (DeclaredType) State.viewAs(state.instanceRequestType, returnType, state);
      if (asInstanceRequest.getTypeArguments().isEmpty()) {
        state.poison(x, Messages.rawType());
      } else {
        TypeMirror instanceType = asInstanceRequest.getTypeArguments().get(0);
        state.maybeScanProxy((TypeElement) state.types.asElement(instanceType));
        TypeMirror requestReturn = asInstanceRequest.getTypeArguments().get(1);
        if (!state.isTransportableType(requestReturn)) {
          state.poison(x, Messages.untransportableType(requestReturn));
        }
      }
    } else if (!isSetter(x, state)) {

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      return CollectionHelper.asSet(
          new ConstraintCheckError( element, null, "CONSTRAINT_TYPE_MUST_DECLARE_GROUPS_MEMBER" )
      );
    }


    DeclaredType type = getComponentTypeOfArrayReturnType( groupsMethod );


    if ( type == null ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError( groupsMethod, null, "RETURN_TYPE_MUST_BE_CLASS_ARRAY" )
      );
    }


    boolean typeHasNameClass = type.asElement().getSimpleName().contentEquals( "Class" );
    boolean typeHasExactlyOneTypeArgument = type.getTypeArguments().size() == 1;
    boolean typeArgumentIsUnboundWildcard = validateWildcardBounds( type.getTypeArguments().get( 0 ), null, null );


    if ( !( typeHasNameClass && typeHasExactlyOneTypeArgument && typeArgumentIsUnboundWildcard ) ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError( groupsMethod, null, "RETURN_TYPE_MUST_BE_CLASS_ARRAY" )
      );

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      return CollectionHelper.asSet(
          new ConstraintCheckError( element, null, "CONSTRAINT_TYPE_MUST_DECLARE_PAYLOAD_MEMBER" )
      );
    }


    DeclaredType type = getComponentTypeOfArrayReturnType( payloadMethod );


    if ( type == null ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError( payloadMethod, null, "PAYLOAD_RETURN_TYPE_MUST_BE_CLASS_ARRAY" )
      );
    }


    boolean typeHasNameClass = type.asElement().getSimpleName().contentEquals( "Class" );
    boolean typeHasExactlyOneTypeArgument = type.getTypeArguments().size() == 1;
    boolean typeArgumentIsWildcardWithPayloadExtendsBound = validateWildcardBounds(
        type.getTypeArguments().get( 0 ), annotationApiHelper.getMirrorForType( Payload.class ), null
    );


    if ( !( typeHasNameClass && typeHasExactlyOneTypeArgument && typeArgumentIsWildcardWithPayloadExtendsBound ) ) {
      return CollectionHelper.asSet(
          new ConstraintCheckError( payloadMethod, null, "PAYLOAD_RETURN_TYPE_MUST_BE_CLASS_ARRAY" )

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    TypeMirror wrappedArrayElementType = arrayElementType.getKind().isPrimitive()
        ? typeUtils.boxedClass((PrimitiveType) arrayElementType).asType()
        : arrayElementType;
    TypeElement javaUtilCollection =
        processingEnv.getElementUtils().getTypeElement(Collection.class.getCanonicalName());
    DeclaredType collectionOfElement =
        typeUtils.getDeclaredType(javaUtilCollection, wrappedArrayElementType);
    return typeUtils.isAssignable(parameterType, collectionOfElement);
  }

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