org.zbus.pool.Pool.java Source code

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Here is the source code for org.zbus.pool.Pool.java

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/**
 * The MIT License (MIT)
 * Copyright (c) 2009-2015 HONG LEIMING
 * 
 * Permission is hereby granted, free of charge, to any person obtaining a copy
 * of this software and associated documentation files (the "Software"), to deal
 * in the Software without restriction, including without limitation the rights
 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
 * copies of the Software, and to permit persons to whom the Software is
 * furnished to do so, subject to the following conditions:
 * 
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 * 
 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
 * THE SOFTWARE.
 */
package org.zbus.pool;

import java.io.Closeable;

import org.zbus.pool.impl.DefaultPoolFactory;

public abstract class Pool<T> implements Closeable {

    public abstract T borrowObject() throws Exception;

    public abstract void returnObject(T obj);

    public static <T> Pool<T> getPool(ObjectFactory<T> factory, PoolConfig config) {
        return Pool.factory.getPool(factory, config);
    }

    private static PoolFactory factory;

    static {
        initDefaultFactory();
    }

    public static void setPoolFactory(PoolFactory factory) {
        if (factory != null) {
            Pool.factory = factory;
        }
    }

    public static void initDefaultFactory() {
        if (factory != null) {
            return;
        }
        String defaultFactory = String.format("%s.impl.CommonsPool2Factory", Pool.class.getPackage().getName());
        try {
            //default to Log4j
            Class.forName("org.apache.commons.pool2.BasePooledObjectFactory");
            Class<?> factoryClass = Class.forName(defaultFactory);
            factory = (PoolFactory) factoryClass.newInstance();
        } catch (Exception e) {
            factory = new DefaultPoolFactory();
        }
    }
}