Package com.google.gwt.core.ext.typeinfo

Interface HasAnnotations

All Known Subinterfaces:

JAbstractMethod, JAnnotationMethod, JAnnotationType, JArrayType, JClassType, JConstructor, JEnumConstant, JEnumType, JField, JGenericType, JMethod, JPackage, JParameter, JParameterizedType, JRawType, JRealClassType, JTypeParameter, JWildcardType

public interface HasAnnotations

Interface implemented by elements that can have annotations. This interface is a departure for GWT in that it used types declared in the java.lang.annotation package instead of types declared as part of this typeinfo package. This reflects a compromise between a pure TypeOracle model and one that is more useful to developers.

Method Summary

Modifier and Type	Method	Description
<T extends Annotation> T	getAnnotation(Class<T> annotationClass)	Returns an instance of the specified annotation type if it is present on this element or null if it is not.
Annotation[]	getAnnotations()	Returns all the annotations present on this element.
Annotation[]	getDeclaredAnnotations()	Returns the annotations declared directly on this element; does not include any inherited annotations.
boolean	isAnnotationPresent(Class<? extends Annotation> annotationClass)	Returns true if this item has an annotation of the specified type.

Method Details

getAnnotation

<T extends Annotation> T getAnnotation(Class<T> annotationClass)

Returns an instance of the specified annotation type if it is present on this element or null if it is not. For a class, this will look for annotations on supertypes as well.

Parameters:

annotationClass - annotation type to search for

Returns:

instance of the specified annotation type if it is present on this element or null if it is not

getAnnotations

Annotation[] getAnnotations()

Returns all the annotations present on this element. For a class, the list will include annotations on supertypes as well.

getDeclaredAnnotations

Annotation[] getDeclaredAnnotations()

Returns the annotations declared directly on this element; does not include any inherited annotations.

isAnnotationPresent

boolean isAnnotationPresent(Class<? extends Annotation> annotationClass)

Returns true if this item has an annotation of the specified type. For a class, this will look at supertypes as well.

Returns:

true if this item has an annotation of the specified type