/*
    * 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.myfaces.view.facelets.tag;
  
  import java.beans.IntrospectionException;
  import java.beans.Introspector;
  import java.beans.PropertyDescriptor;
  import java.lang.reflect.Method;
  import java.util.HashMap;
  import java.util.Map;
  
  import javax.faces.view.facelets.MetadataTarget;
  
  /**
   * 
   * @author Jacob Hookom
   * @version $Id$
   */
  public final class MetadataTargetImpl extends MetadataTarget
  {
      private final Map<String, PropertyDescriptor> _pd;
      
      private final Class<?> _type;
  
      public MetadataTargetImpl(Class<?> type) throws IntrospectionException
      {
          _type = type;
          
          _pd = new HashMap<String, PropertyDescriptor>();
          for (PropertyDescriptor descriptor : Introspector.getBeanInfo(type).getPropertyDescriptors())
          {
              _pd.put(descriptor.getName(), descriptor);
          }
      }
  
      public PropertyDescriptor getProperty(String name)
      {
          return _pd.get(name);
      }
  
      public Class<?> getPropertyType(String name)
      {
          PropertyDescriptor pd = getProperty(name);
          if (pd != null)
          {
              return pd.getPropertyType();
          }
          
          return null;
      }
  
      public Method getReadMethod(String name)
      {
          PropertyDescriptor pd = getProperty(name);
          if (pd != null)
          {
              return pd.getReadMethod();
          }
          
          return null;
      }
  
      public Class<?> getTargetClass()
      {
          return _type;
      }
  
      public Method getWriteMethod(String name)
      {
          PropertyDescriptor pd = getProperty(name);
          if (pd != null)
          {
              return pd.getWriteMethod();
          }
          
          return null;
      }
  
      public boolean isTargetInstanceOf(Class type)
      {
          return type.isAssignableFrom(_type);
      }
  }