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Glassfish example source code file (ResourcePool.java)

This example Glassfish source code file (ResourcePool.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" TM.

Java - Glassfish tags/keywords

poolinfo, poolinfo, poolingexception, poolingexception, poolstatus, poolwaitqueue, poolwaitqueue, resourceallocator, resourcehandle, resourcehandle, resourcepool, retryableunavailableexception, transaction, transaction

The Glassfish ResourcePool.java source code

/*
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
 *
 * Copyright (c) 1997-2010 Oracle and/or its affiliates. All rights reserved.
 *
 * The contents of this file are subject to the terms of either the GNU
 * General Public License Version 2 only ("GPL") or the Common Development
 * and Distribution License("CDDL") (collectively, the "License").  You
 * may not use this file except in compliance with the License.  You can
 * obtain a copy of the License at
 * https://glassfish.dev.java.net/public/CDDL+GPL_1_1.html
 * or packager/legal/LICENSE.txt.  See the License for the specific
 * language governing permissions and limitations under the License.
 *
 * When distributing the software, include this License Header Notice in each
 * file and include the License file at packager/legal/LICENSE.txt.
 *
 * GPL Classpath Exception:
 * Oracle designates this particular file as subject to the "Classpath"
 * exception as provided by Oracle in the GPL Version 2 section of the License
 * file that accompanied this code.
 *
 * Modifications:
 * If applicable, add the following below the License Header, with the fields
 * enclosed by brackets [] replaced by your own identifying information:
 * "Portions Copyright [year] [name of copyright owner]"
 *
 * Contributor(s):
 * If you wish your version of this file to be governed by only the CDDL or
 * only the GPL Version 2, indicate your decision by adding "[Contributor]
 * elects to include this software in this distribution under the [CDDL or GPL
 * Version 2] license."  If you don't indicate a single choice of license, a
 * recipient has the option to distribute your version of this file under
 * either the CDDL, the GPL Version 2 or to extend the choice of license to
 * its licensees as provided above.  However, if you add GPL Version 2 code
 * and therefore, elected the GPL Version 2 license, then the option applies
 * only if the new code is made subject to such option by the copyright
 * holder.
 */

package com.sun.enterprise.resource.pool;


import org.glassfish.resource.common.PoolInfo;
import com.sun.enterprise.connectors.ConnectorConnectionPool;
import com.sun.enterprise.resource.ResourceHandle;
import com.sun.enterprise.resource.ResourceSpec;
import com.sun.enterprise.resource.listener.PoolLifeCycleListener;
import com.sun.enterprise.resource.allocator.ResourceAllocator;
import com.sun.appserv.connectors.internal.api.PoolingException;
import com.sun.enterprise.resource.pool.waitqueue.PoolWaitQueue;

import javax.resource.spi.RetryableUnavailableException;
import javax.transaction.Transaction;

/**
 * @author Tony Ng
 */
public interface ResourcePool {

    // start IASRI 4649256
    // Modify getResource() to throw PoolingException
    public ResourceHandle getResource(ResourceSpec spec,
                                      ResourceAllocator alloc,
                                      Transaction tran) throws PoolingException, RetryableUnavailableException;
    // end IASRI 4649256

    public void resourceClosed(ResourceHandle resource);

    public void resourceErrorOccurred(ResourceHandle resource);

    public void resourceEnlisted(Transaction tran, ResourceHandle resource);

    //Get status of pool
    public PoolStatus getPoolStatus();

    public void transactionCompleted(Transaction tran, int status);

    public void resizePool(boolean forced);

    // forcefully destroy all connections in the pool even if
    // connections have transactions in progress
    public void emptyPool();


    //reconfig the pool's properties
    public void reconfigurePool(ConnectorConnectionPool ccp)
            throws PoolingException;


    //cancel the resizer task in the pool
    public void cancelResizerTask();

    public void switchOnMatching();

    public PoolInfo getPoolInfo();

    public void emptyFreeConnectionsInPool();

    //accessors for self mgmt
    /**
     * Gets the max-pool-size attribute of this pool. Envisaged to be
     * used by the Self management framework to query the pool size
     * attribute for tweaking it using the setMaxPoolSize method
     *
     * @return max-pool-size value for this pool
     * @see setMaxPoolSize
     */
    public int getMaxPoolSize();

    /**
     * Gets the steady-pool-size attribute of this pool. Envisaged to be
     * used by the Self management framework to query the pool size
     * attribute for tweaking it using the setSteadyPoolSize method
     *
     * @return steady-pool-size value for this pool
     * @see setSteadyPoolSize
     */
    public int getSteadyPoolSize();

    //mutators for self mgmt
    /**
     * Sets the max-pool-size value for this pool. This attribute is
     * expected to be set by the self-management framework for an optimum
     * max-pool-size. The corresponding accessor gets this value.
     *
     * @param size - The new max-pool-size value
     * @see getMaxPoolSize
     */
    public void setMaxPoolSize(int size);

    /**
     * Sets the steady-pool-size value for this pool. This attribute is
     * expected to be set by the self-management framework for an optimum
     * steady-pool-size. The corresponding accessor gets this value.
     *
     * @param size - The new steady-pool-size value
     * @see getSteadyPoolSize
     */
    public void setSteadyPoolSize(int size);

    /**
     * Sets/Resets the flag indicating if this pool is self managed.
     * This method would be typically called by the self management
     * framework to indicate to the world (and this pool) that this
     * pool is self managed. Its very important that the self mgmt
     * framework properly sets this flag to control the dynamic reconfig
     * behavior of this pool. If this flag is set to true, all dynamic
     * reconfigs affecting the max/steady pool size of this pool will
     * be ignored.
     *
     * @param selfManaged - true to switch on self management, false otherwise
     */
    public void setSelfManaged(boolean selfManaged);

    /**
     * set pool life cycle listener
     * @param listener
     */
    public void setPoolLifeCycleListener(PoolLifeCycleListener listener);

    /**
     * remove pool life cycle listener
     */
    public void removePoolLifeCycleListener();

    /**
     * Flush Connection pool by reinitializing the connections 
     * established in the pool.
     * @return boolean indicating whether flush operation was successful or not
     * @throws com.sun.appserv.connectors.internal.api.PoolingException
     */
    public boolean flushConnectionPool() throws PoolingException;

    /**
     * block any new requests to the pool
     * Used for transparent dynamic reconfiguration of the pool
     * @param waitTimeout time for which the new requests will wait
     */
    public void blockRequests(long waitTimeout);

    /**
     * returns pool-wait-queue
     * @return wait-queue
     */
    public PoolWaitQueue getPoolWaitQueue();

    /**
     * returns wait-queue used during transparent dynamic reconfiguration
     * @return PoolWaitQueue
     */
    public PoolWaitQueue getReconfigWaitQueue();

    /**
     * returns the reconfig-wait-time
     * @return long
     */
    public long getReconfigWaitTime();
}


Other Glassfish examples (source code examples)

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