/*
* JBoss, Home of Professional Open Source
* Copyright 2006, JBoss Inc., and individual contributors as indicated
* by the @authors tag. See the copyright.txt 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.test.deployers.main.support;

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

import org.jboss.dependency.plugins.AbstractDependencyInfo;
import org.jboss.dependency.spi.ControllerState;
import org.jboss.dependency.spi.DependencyItem;

/**
 * @author <a href="mailto:ales.justin@jboss.com">Ales Justin</a>
 */
public class OrderedDependencyInfo extends AbstractDependencyInfo
{
   private Set<DependencyItem> items = new LinkedHashSet<DependencyItem>();

   public void addIDependOn(DependencyItem dependency)
   {
      super.addIDependOn(dependency);
      items.add(dependency);
   }

   public void removeIDependOn(DependencyItem dependency)
   {
      super.removeIDependOn(dependency);
      items.remove(dependency);
   }

   public Set<DependencyItem> getUnresolvedDependencies(ControllerState state)
   {
      if (items.isEmpty())
         return Collections.emptySet();
      
      Set<DependencyItem> result = new HashSet<DependencyItem>();
      if (items.isEmpty() == false)
      {
         for (DependencyItem item : items)
         {
            if (state == null || state.equals(item.getWhenRequired()))
               result.add(item);
         }
      }
      return result;
   }
}