/*
    * Copyright 2005-2008 The Kuali Foundation
    * 
    * 
    * Licensed under the Educational Community 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.opensource.org/licenses/ecl2.php
   * 
   * 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.kuali.rice.kew.batch;
  
  import java.io.File;
  import java.io.IOException;
  import java.util.Collection;
  import java.util.LinkedList;
  import java.util.List;
  
  /**
   * In someway allows muliple xml documents to be pushed into the xml loading 
   * 'pipeline'.
   *
   * @author Kuali Rice Team (rice.collab@kuali.org)
   */
  public class CompositeXmlDocCollection implements XmlDocCollection {
      protected Collection<XmlDocCollection> collections;
      public CompositeXmlDocCollection(Collection<XmlDocCollection> xmlDocCollections) {
          collections = xmlDocCollections;
      }
  
      public File getFile() {
          return null;
      }
  
      public List<? extends XmlDoc> getXmlDocs() {
          List<XmlDoc> docs = new LinkedList<XmlDoc>();
          for (XmlDocCollection collection : collections)
          {
              docs.addAll(collection.getXmlDocs());
          }
          return docs;
      }
  
      public void close() throws IOException {
          for (XmlDocCollection collection : collections)
          {
              collection.close();
          }
      }
  
      public String toString() {
          StringBuffer sb = new StringBuffer("[CompositeXmlDocCollection: ");
          for (XmlDocCollection collection : collections)
          {
              sb.append(collection.toString()).append(", ");
          }
          if (collections.size() > 0) {
              sb.setLength(sb.length() - 2);
          }
          sb.append("]");
          return sb.toString();
      }
  }