/*

  * $Id: CombinedBeanInfo.java 995228 2010-09-08 19:50:09Z apetrelli $

  *

  * 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.tiles.util;

 import java.beans.FeatureDescriptor;

 import java.beans.PropertyDescriptor;

 import java.util.ArrayList;

 import java.util.LinkedHashMap;

 import java.util.List;

 import java.util.Map;

 import java.util.Set;

 import org.apache.tiles.request.reflect.ClassUtil;

 /**

  * Contains the bean infos about one or more classes.

  *

  * @version $Rev: 995228 $ $Date: 2010-09-09 05:50:09 +1000 (Thu, 09 Sep 2010) $

  * @since 2.2.0

  */

 public class CombinedBeanInfo {

     /**

      * The descriptors of the introspected classes.

      */

     private List<FeatureDescriptor> descriptors;

     /**

      * Maps analyzed classes to the map of introspected properties.

      */

     private Map<Class<?>, Map<String, PropertyDescriptor>> class2descriptors;

     /**

      * Constructor.

      * @param clazzes The list of classes to analyze and combine.

      *

      * @since 2.2.0

      */

     public CombinedBeanInfo(Class<?>... clazzes) {

         descriptors = new ArrayList<FeatureDescriptor>();

         class2descriptors = new LinkedHashMap<Class<?>, Map<String, PropertyDescriptor>>();

         for (int i = 0; i < clazzes.length; i++) {

             Class<?> clazz = clazzes[i];

             Map<String, PropertyDescriptor> mappedDescriptors = new LinkedHashMap<String, PropertyDescriptor>();

             ClassUtil.collectBeanInfo(clazz, mappedDescriptors);

             descriptors.addAll(mappedDescriptors.values());

             class2descriptors.put(clazz, mappedDescriptors);

         }

     }

     /**

      * Returns the descriptors of all the introspected classes.

      *

      * @return The feature descriptors.

      * @since 2.2.0

      */

     public List<FeatureDescriptor> getDescriptors() {

         return descriptors;

     }

     /**

      * Returns a map of the introspected properties for the given class.

      *

      * @param clazz The class to get the properties from.

      * @return The map of property descriptors.

      * @since 2.2.0

      */

     public Map<String, PropertyDescriptor> getMappedDescriptors(Class<?> clazz) {

         return class2descriptors.get(clazz);

     }

     /**

      * Returns the set of properties for the given introspected class.

      *

      * @param clazz The class to get the properties from.

      * @return The set of properties.

      * @since 2.2.0

      */

     public Set<String> getProperties(Class<?> clazz) {

         return class2descriptors.get(clazz).keySet();

     }

 }