001    // Copyright 2004, 2005 The Apache Software Foundation
002    //
003    // Licensed under the Apache License, Version 2.0 (the "License");
004    // you may not use this file except in compliance with the License.
005    // You may obtain a copy of the License at
006    //
007    //     http://www.apache.org/licenses/LICENSE-2.0
008    //
009    // Unless required by applicable law or agreed to in writing, software
010    // distributed under the License is distributed on an "AS IS" BASIS,
011    // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
012    // See the License for the specific language governing permissions and
013    // limitations under the License.
014    
015    package org.apache.tapestry.util;
016    
017    import org.apache.tapestry.engine.IPropertySource;
018    
019    /**
020     *  Implements the {@link IPropertySource} interface
021     *  for instances that implement {@link org.apache.tapestry.util.IPropertyHolder}.
022     *
023     *  @author Howard Lewis Ship
024     *  @since 2.3
025     *
026     **/
027    
028    public class PropertyHolderPropertySource implements IPropertySource
029    {
030        private IPropertyHolder _holder;
031        
032        public PropertyHolderPropertySource(IPropertyHolder holder)
033        {
034            _holder = holder;
035        }
036    
037        public String getPropertyValue(String propertyName)
038        {
039            return _holder.getProperty(propertyName);
040        }
041    
042    }