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.pool;
019    
020    /**
021     * A base implementation of <code>PoolableObjectFactory</code>.
022     * <p>
023     * All operations defined here are essentially no-op's.
024     *
025     * @param <T> the type of objects held in this pool
026     * 
027     * @see PoolableObjectFactory
028     * @see BaseKeyedPoolableObjectFactory
029     *
030     * @author Rodney Waldhoff
031     * @version $Revision: 1222388 $ $Date: 2011-12-22 13:28:27 -0500 (Thu, 22 Dec 2011) $
032     * @since Pool 1.0
033     */
034    public abstract class BasePoolableObjectFactory<T> implements PoolableObjectFactory<T> {
035        
036        /**
037         * {@inheritDoc}
038         */
039        public abstract T makeObject() throws Exception;
040    
041        /**
042         *  No-op.
043         *  
044         *  @param obj ignored
045         */
046        public void destroyObject(T obj)
047            throws Exception  {
048        }
049    
050        /**
051         * This implementation always returns <tt>true</tt>.
052         * 
053         * @param obj ignored
054         * @return <tt>true</tt>
055         */
056        public boolean validateObject(T obj) {
057            return true;
058        }
059    
060        /**
061         *  No-op.
062         *  
063         *  @param obj ignored
064         */
065        public void activateObject(T obj) throws Exception {
066        }
067    
068        /**
069         *  No-op.
070         *  
071         * @param obj ignored
072         */
073        public void passivateObject(T obj)
074            throws Exception {
075        }
076    }