/*
 * JBoss, Home of Professional Open Source.
 * Copyright 2008, Red Hat Middleware LLC, and individual contributors
 * as indicated by the @author tags. See the copyright.txt file in the
 * distribution for a full listing of individual contributors.
 *
 * This is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Lesser General Public License as
 * published by the Free Software Foundation; either version 2.1 of
 * the License, or (at your option) any later version.
 *
 * This software is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this software; if not, write to the Free
 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
 */
package org.jboss.deployment;

import org.jboss.deployers.spi.DeploymentException;
import org.jboss.deployers.spi.deployer.DeploymentStages;
import org.jboss.deployers.spi.deployer.helpers.AbstractOptionalRealDeployer;
import org.jboss.deployers.structure.spi.DeploymentUnit;
import org.jboss.metadata.web.jboss.JBossWebMetaData;
import org.jboss.scanning.annotations.spi.AnnotationIndex;
import org.jboss.scanning.hierarchy.spi.HierarchyIndex;
import org.jboss.scanning.web.plugins.DefaultResourcesIndex;
import org.jboss.scanning.web.spi.ResourcesIndex;

/**
 * Assemble ResourcesIndex.
 *
 * Use JBossWebMetaData as optional, as this is our current use case,
 * which can then be made generic.
 *
 * @author ales.justin@jboss.org
 */
public class ResourcesIndexDeployer extends AbstractOptionalRealDeployer<JBossWebMetaData>
{
   public ResourcesIndexDeployer()
   {
      super(JBossWebMetaData.class);
      addInput(AnnotationIndex.class);
      addInput(HierarchyIndex.class);
      setOutput(ResourcesIndex.class);
      addOutput(JBossWebMetaData.class); // pass through
      setStage(DeploymentStages.POST_CLASSLOADER);
   }

   public void deploy(DeploymentUnit unit, JBossWebMetaData deployment) throws DeploymentException
   {
      AnnotationIndex ai = unit.getAttachment(AnnotationIndex.class);
      if (ai == null)
         return;

      HierarchyIndex hi = unit.getAttachment(HierarchyIndex.class);
      if (hi == null)
         return;

      ResourcesIndex ri = new DefaultResourcesIndex(ai, hi);
      unit.addAttachment(ResourcesIndex.class, ri);
   }
}