org.jboss.weld.environment.deployment.WeldDeployment Maven / Gradle / Ivy

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/*
 * JBoss, Home of Professional Open Source
 * Copyright 2009, 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.weld.environment.deployment;

import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.Set;

import javax.enterprise.inject.spi.Extension;

import org.jboss.weld.bootstrap.api.Bootstrap;
import org.jboss.weld.bootstrap.spi.BeanDeploymentArchive;
import org.jboss.weld.bootstrap.spi.Metadata;
import org.jboss.weld.resources.spi.ResourceLoader;

/**
 *
 * @author Peter Royle
 * @author Martin Kouba
 */
public class WeldDeployment extends AbstractWeldDeployment {

    public static final String ADDITIONAL_BDA_ID = WeldDeployment.class.getName() + ".additionalClasses";

    public static final String SYNTHETIC_BDA_ID = WeldDeployment.class.getName() + ".synthetic";

    private final Set beanDeploymentArchives;

    private final ResourceLoader resourceLoader;

    private WeldBeanDeploymentArchive additionalBeanDeploymentArchive = null;

    /**
     *
     * @param resourceLoader
     * @param bootstrap
     * @param beanDeploymentArchives The set should be mutable so that additional bean deployment archives can be eventually added
     * @param extensions
     */
    public WeldDeployment(ResourceLoader resourceLoader, Bootstrap bootstrap, Set beanDeploymentArchives,
            Iterable> extensions) {
        super(bootstrap, extensions);
        this.resourceLoader = resourceLoader;
        this.beanDeploymentArchives = beanDeploymentArchives;
        setBeanDeploymentArchivesAccessibility();
    }

    @Override
    public Collection getBeanDeploymentArchives() {
        return Collections. unmodifiableSet(beanDeploymentArchives);
    }

    @Override
    public BeanDeploymentArchive loadBeanDeploymentArchive(Class beanClass) {
        if (beanDeploymentArchives.size() == 1) {
            // There's only one bean archive or isolation is disabled - additional bean deployment archive does not make much sense
            return beanDeploymentArchives.iterator().next();
        }
        BeanDeploymentArchive bda = getBeanDeploymentArchive(beanClass);
        return bda != null ? bda : createAdditionalBeanDeploymentArchiveIfNeeded(beanClass);
    }

    @Override
    public BeanDeploymentArchive getBeanDeploymentArchive(Class beanClass) {
        for (BeanDeploymentArchive bda : beanDeploymentArchives) {
            if (bda.getBeanClasses().contains(beanClass.getName())) {
                return bda;
            }
        }
        return null;
    }

    protected BeanDeploymentArchive createAdditionalBeanDeploymentArchiveIfNeeded(Class beanClass) {
        if (additionalBeanDeploymentArchive == null) {
            additionalBeanDeploymentArchive = createAdditionalBeanDeploymentArchive(beanClass);
        } else {
            additionalBeanDeploymentArchive.addBeanClass(beanClass.getName());
        }
        return additionalBeanDeploymentArchive;
    }

    /**
     * Additional bean deployment archives are used for extentions, synthetic annotated types and beans which do not come from a bean archive.
     *
     * @param beanClass
     * @return the additional bean deployment archive
     */
    protected WeldBeanDeploymentArchive createAdditionalBeanDeploymentArchive(Class beanClass) {
        // At this time only the initial bean class is known
        Set beanClasses = new HashSet();
        beanClasses.add(beanClass.getName());
        WeldBeanDeploymentArchive additionalBda = new WeldBeanDeploymentArchive(ADDITIONAL_BDA_ID, beanClasses, null);
        additionalBda.getServices().add(ResourceLoader.class, resourceLoader);
        additionalBda.getServices().addAll(getServices().entrySet());
        beanDeploymentArchives.add(additionalBda);
        setBeanDeploymentArchivesAccessibility();
        return additionalBda;
    }

    /**
     * By default all bean archives see each other.
     */
    protected void setBeanDeploymentArchivesAccessibility() {
        for (WeldBeanDeploymentArchive archive : beanDeploymentArchives) {
            archive.setAccessibleBeanDeploymentArchives(beanDeploymentArchives);
        }
    }

}