/*
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
*
* Copyright 1997-2007 Sun Microsystems, Inc. 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.html
* or glassfish/bootstrap/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 glassfish/bootstrap/legal/LICENSE.txt.
* Sun designates this particular file as subject to the "Classpath" exception
* as provided by Sun in the GPL Version 2 section of the License file that
* accompanied this code. If applicable, add the following below the License
* Header, with the fields enclosed by brackets [] replaced by your own
* identifying information: "Portions Copyrighted [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.
*/
/**
* <BR> <I>$Source: /cvs/glassfish/appserv-core/src/java/com/sun/ejb/containers/util/pool/Pool.java,v $</I>
* @author $Author: tcfujii $
* @version $Revision: 1.4 $ $Date: 2007/05/05 05:33:00 $
*/
package com.sun.ejb.containers.util.pool;
/**
* Pool defines the methods that can be used by the application to access
* pooled objects. The basic assumption is that all objects in the pool are
* identical (homogeneous). This interface defines methods for a) getting an
* object from the pool, b) returning an object back to the pool
* and, c) destroying (instead of reusing) an object. In addition to these
* methods, the Pool has methods for adding and removing PoolEventListeners.
* There are six overloaded methods for getting objects from a pool.
*
*/
public interface Pool {
/**
@deprecated
*/
public Object getObject(boolean canWait, Object param)
throws PoolException;
/**
@deprecated
*/
public Object getObject(long maxWaitTime, Object param)
throws PoolException;
/**
* Get an object from the pool within the specified time.
* @param The amount of time the calling thread agrees to wait.
* @param Some value that might be used while creating the object
* @return an Object or null if an object could not be returned in
* 'waitForMillis' millisecond.
* @exception Throws PoolException if an object cannot be created
*/
public Object getObject(Object param)
throws PoolException;
/**
* Return an object back to the pool. An object that is obtained through
* getObject() must always be returned back to the pool using either
* returnObject(obj) or through destroyObject(obj).
*/
public void returnObject(Object obj);
/**
* Destroys an Object. Note that applications should not ignore the
* reference to the object that they got from getObject(). An object
* that is obtained through getObject() must always be returned back to
* the pool using either returnObject(obj) or through destroyObject(obj).
* This method tells that the object should be destroyed and cannot be
* reused.
*
*/
public void destroyObject(Object obj);
}
|