/*
* JBoss, Home of Professional Open Source
* Copyright 2011, Red Hat, Inc. and/or its affiliates, and individual
* contributors by the @authors tag. See the copyright.txt in the
* distribution for a full listing of individual contributors.
*
* 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 org.jboss.solder.bean;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Set;
import javax.enterprise.inject.spi.Bean;
import javax.enterprise.inject.spi.PassivationCapable;
/**
* <p>
* A passivation capable narrowing bean allows you to build a general purpose,
* passivation capable, bean (likely a producer method), and register it for a
* narrowed type (or qualifiers). For example, you could create a producer
* method which uses an a String ID to located an object (the object can have
* any class):
* </p>
* <p/>
* <pre>
* @Produces
* // Use some synthetic scope to prevent this from interfering with other
* // resolutions
* @MyProducer
* Object produce(InjectionPoint ip)
* {
* String id = ip.getAnnotated().getAnnotation(Id.class).value();
* // Lookup and return the object for the id
* }
* </pre>
* <p/>
* <p>
* The delegate bean <em>must</em> return an object which can be cast to the
* type <code>T</code>, otherwise a {@link ClassCastException} will be thrown at
* runtime when the bean is created.
* </p>
* <p/>
* <p>
* You can then register a narrowing bean for each type you need:
* </p>
* <p/>
* <pre>
* event.addBean(new NarrowingBeanBuilder<T>(delegateBean).readFromType(type).create());
* </pre>
* <p/>
* <p>
* {@link ImmutablePassivationCapableNarrowingBean} will use the annotations on
* <code>defininingType</code> to discover the qualifiers, types, scope,
* stereotypes of the bean, as well as determine it's name (if any) and whether
* it is an alternative.
* </p>
* <p/>
* <p>
* The attributes are immutable, and collections are defensively copied on
* instantiation. It uses the defaults from the specification for properties if
* not specified.
* </p>
*
* @author Pete Muir
* @see NarrowingBeanBuilder
* @see ImmutableNarrowingBean
*/
public class ImmutablePassivationCapableNarrowingBean<T> extends ImmutableNarrowingBean<T> implements PassivationCapable {
private final String id;
public ImmutablePassivationCapableNarrowingBean(Bean<Object> delegate, String name, Set<Annotation> qualifiers, Class<? extends Annotation> scope, Set<Class<? extends Annotation>> stereotypes, Set<Type> types, boolean alternative, boolean nullable, String toString, String id) {
super(delegate, name, qualifiers, scope, stereotypes, types, alternative, nullable, toString);
this.id = id;
}
public String getId() {
return id;
}
}