ServiceMetaData.java

/*
 * Copyright 2009 JBoss, a divison Red Hat, Inc
 *
 * 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.errai.cdi.server;

import org.jboss.errai.bus.server.service.ErraiService;
import org.jboss.errai.bus.server.service.ErraiServiceImpl;

import javax.enterprise.context.ApplicationScoped;
import javax.enterprise.context.spi.CreationalContext;
import javax.enterprise.inject.Any;
import javax.enterprise.inject.Default;
import javax.enterprise.inject.spi.*;
import javax.enterprise.util.AnnotationLiteral;
import java.lang.annotation.Annotation;
import java.lang.reflect.Type;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

/**
 *
 * @author: Heiko Braun <hbraun@redhat.com>
 * @date: Sep 15, 2010
 */
public class ServiceMetaData implements Bean {

    final InjectionTarget it;
    final ErraiService delegate;

    public ServiceMetaData(BeanManager bm, ErraiService delegate) {

        //use this to read annotations of the class
        AnnotatedType at = bm.createAnnotatedType(ErraiServiceImpl.class);

        //use this to create the class and inject dependencies
        this.it = bm.createInjectionTarget(at);

        // invocation target
        this.delegate = delegate;
    }

    public Class<?> getBeanClass() {
        return ErraiService.class;
    }


    public Set<InjectionPoint> getInjectionPoints() {
        return it.getInjectionPoints();
    }

    public String getName() {
        return "Errai";
    }

    public Set<Annotation> getQualifiers() {
        Set<Annotation> qualifiers = new HashSet<Annotation>();
        qualifiers.add( new AnnotationLiteral<Default>() {} );
        qualifiers.add( new AnnotationLiteral<Any>() {} );
        return qualifiers;
    }

    public Class<? extends Annotation> getScope() {
        return ApplicationScoped.class;
    }

    public Set<Class<? extends Annotation>> getStereotypes() {
        return Collections.emptySet();
    }

    public Set<Type> getTypes() {
        Set<Type> types = new HashSet<Type>();
        types.add(ErraiService.class);
        types.add(Object.class);
        return types;
    }

    public boolean isAlternative() {
        return false;
    }

    public boolean isNullable() {
        return false;
    }

    public Object create(CreationalContext ctx) {
        Object instance = delegate;
        it.inject(instance, ctx);
        it.postConstruct(instance);
        return instance;
    }

    public void destroy(Object instance, CreationalContext ctx) {
        it.preDestroy(instance);
        it.dispose(instance);
        ctx.release();
    }
}