/*

  * Licensed to the Apache Software Foundation (ASF) under one or more

  * contributor license agreements.  See the NOTICE file distributed with

  * this work for additional information regarding copyright ownership.

  * The ASF licenses this file to You 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.apache.commons.flatfile.morph;

 import net.sf.morph.reflect.InstantiatingReflector;

 import net.sf.morph.reflect.Reflector;

 import net.sf.morph.reflect.reflectors.BaseReflector;

 import net.sf.morph.reflect.reflectors.SimpleDelegatingReflector;

 import org.apache.commons.flatfile.Entity;

 import org.apache.commons.flatfile.EntityArray;

 import org.apache.commons.flatfile.IndexedEntityCollection;

 /**

  * IndexedEntityCollection InstantiatingReflector.

  * @version $Revision: 757266 $ $Date: 2009-03-22 17:12:27 -0500 (Sun, 22 Mar 2009) $

  */

 public class IndexedEntityCollectionInstantiatingReflector extends

         BaseReflector implements InstantiatingReflector {

     // use a SimpleDelegatingReflector prepended with an

     // EntityCollectionReflector to get the

     // size and contained type of source objects when implementing

     // InstantiatingReflector

     private static final SimpleDelegatingReflector CONTAINER_REFLECTOR = new SimpleDelegatingReflector(

             new Reflector[] { new EntityCollectionReflector() }, true);

     private InstantiatingReflector componentReflector;

     /**

      * {@inheritDoc}

      */

     protected Class<?>[] getReflectableClassesImpl() throws Exception {

         return new Class[] { IndexedEntityCollection.class };

     }

     /**

      * Get the componentReflector.

      * @return InstantiatingReflector.

      */

     public synchronized InstantiatingReflector getComponentReflector() {

         return componentReflector;

     }

     /**

      * Set the componentReflector.  Essential for use of this class as an InstantiatingReflector.

      * @param componentReflector The InstantiatingReflector componentReflector to set.

      */

     public synchronized void setComponentReflector(

             InstantiatingReflector componentReflector) {

         this.componentReflector = componentReflector;

     }

     /**

      * {@inheritDoc}

      */

     @SuppressWarnings("unchecked")

     protected Object newInstanceImpl(Class destType, Object source)

             throws Exception {

         int size = CONTAINER_REFLECTOR.getSize(source);

         if (size == 0) {

             return new EntityArray(0);

         }

         Class containedType = source == null ? null : CONTAINER_REFLECTOR

                 .getContainedType(source.getClass());

         Entity prototype = (Entity) getComponentReflector().newInstance(

                 destType, containedType);

         return new EntityArray(prototype, size);

     }

 }