001    /*
002     * Licensed to the Apache Software Foundation (ASF) under one or more
003     * contributor license agreements.  See the NOTICE file distributed with
004     * this work for additional information regarding copyright ownership.
005     * The ASF licenses this file to You under the Apache License, Version 2.0
006     * (the "License"); you may not use this file except in compliance with
007     * the License.  You may obtain a copy of the License at
008     *
009     *      http://www.apache.org/licenses/LICENSE-2.0
010     *
011     * Unless required by applicable law or agreed to in writing, software
012     * distributed under the License is distributed on an "AS IS" BASIS,
013     * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014     * See the License for the specific language governing permissions and
015     * limitations under the License.
016     */
017    
018    package org.apache.commons.proxy.provider;
019    
020    import org.apache.commons.proxy.ObjectProvider;
021    
022    /**
023     * Returns the result of the inner {@link ObjectProvider provider}.  Subclasses can override the {@link #getObject()}
024     * method and decorate what comes back from the inner provider in some way (by {@link SingletonProvider caching it} for
025     * example). 
026     * 
027     * @author James Carman
028     * @since 1.0
029     */
030    public class ProviderDecorator implements ObjectProvider
031    {
032    //----------------------------------------------------------------------------------------------------------------------
033    // Fields
034    //----------------------------------------------------------------------------------------------------------------------
035    
036        protected ObjectProvider inner;
037    
038    //----------------------------------------------------------------------------------------------------------------------
039    // Constructors
040    //----------------------------------------------------------------------------------------------------------------------
041    
042        public ProviderDecorator( ObjectProvider inner )
043        {
044            this.inner = inner;
045        }
046    
047    //----------------------------------------------------------------------------------------------------------------------
048    // ObjectProvider Implementation
049    //----------------------------------------------------------------------------------------------------------------------
050    
051        public Object getObject()
052        {
053            return inner.getObject();
054        }
055    }
056