javax.enterprise.inject.Typed Maven / Gradle / Ivy
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*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package javax.enterprise.inject;
import static java.lang.annotation.ElementType.FIELD;
import static java.lang.annotation.ElementType.METHOD;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import javax.enterprise.util.AnnotationLiteral;
/**
*
* Restricts the bean types of a bean. May be applied to a bean class or producer method or field.
*
*
*
* @Typed(Shop.class)
* public class BookShop
* extends Business
* implements Shop<Book> {
* ...
* }
*
*
*
* When a @Typed annotation is specified, only the types whose classes are explicitly listed using the
* {@link javax.enterprise.inject.Typed#value() value} member, along with {@link java.lang.Object}, are bean types of the bean.
*
*
* @author Pete Muir
* @author Gavin King
*
*/
@Target({ FIELD, METHOD, TYPE })
@Retention(RUNTIME)
@Documented
public @interface Typed {
/**
*
* Selects the bean types of the bean. Every class must correspond to a type in the unrestricted set of bean types of a
* bean.
*
*
* @return the classes corresponding to the bean types of the bean
*/
Class[] value() default {};
/**
* Supports inline instantiation of the {@link Typed} annotation.
*
* @author Martin Kouba
* @since 2.0
*/
public final static class Literal extends AnnotationLiteral implements Typed {
public static final Literal INSTANCE = of(new Class[]{});
private static final long serialVersionUID = 1L;
private final Class[] value;
public static Literal of(Class[] value) {
return new Literal(value);
}
private Literal(Class[] value) {
this.value = value;
}
public Class[] value() {
return value;
}
}
}