001: /*
002: * The contents of this file are subject to the terms
003: * of the Common Development and Distribution License
004: * (the "License"). You may not use this file except
005: * in compliance with the License.
006: *
007: * You can obtain a copy of the license at
008: * https://jwsdp.dev.java.net/CDDLv1.0.html
009: * See the License for the specific language governing
010: * permissions and limitations under the License.
011: *
012: * When distributing Covered Code, include this CDDL
013: * HEADER in each file and include the License file at
014: * https://jwsdp.dev.java.net/CDDLv1.0.html If applicable,
015: * add the following below this CDDL HEADER, with the
016: * fields enclosed by brackets "[]" replaced with your
017: * own identifying information: Portions Copyright [yyyy]
018: * [name of copyright owner]
019: */
020: /*
021: * $Id: ParserPool.java,v 1.2 2007/07/16 16:41:25 ofung Exp $
022: * $Revision: 1.2 $
023: * $Date: 2007/07/16 16:41:25 $
024: */
025:
026: /*
027: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS HEADER.
028: *
029: * Copyright 1997-2007 Sun Microsystems, Inc. All rights reserved.
030: *
031: * The contents of this file are subject to the terms of either the GNU
032: * General Public License Version 2 only ("GPL") or the Common Development
033: * and Distribution License("CDDL") (collectively, the "License"). You
034: * may not use this file except in compliance with the License. You can obtain
035: * a copy of the License at https://glassfish.dev.java.net/public/CDDL+GPL.html
036: * or glassfish/bootstrap/legal/LICENSE.txt. See the License for the specific
037: * language governing permissions and limitations under the License.
038: *
039: * When distributing the software, include this License Header Notice in each
040: * file and include the License file at glassfish/bootstrap/legal/LICENSE.txt.
041: * Sun designates this particular file as subject to the "Classpath" exception
042: * as provided by Sun in the GPL Version 2 section of the License file that
043: * accompanied this code. If applicable, add the following below the License
044: * Header, with the fields enclosed by brackets [] replaced by your own
045: * identifying information: "Portions Copyrighted [year]
046: * [name of copyright owner]"
047: *
048: * Contributor(s):
049: *
050: * If you wish your version of this file to be governed by only the CDDL or
051: * only the GPL Version 2, indicate your decision by adding "[Contributor]
052: * elects to include this software in this distribution under the [CDDL or GPL
053: * Version 2] license." If you don't indicate a single choice of license, a
054: * recipient has the option to distribute your version of this file under
055: * either the CDDL, the GPL Version 2 or to extend the choice of license to
056: * its licensees as provided above. However, if you add GPL Version 2 code
057: * and therefore, elected the GPL Version 2 license, then the option applies
058: * only if the new code is made subject to such option by the copyright
059: * holder.
060: */
061:
062: package com.sun.xml.messaging.saaj.util;
063:
064: import java.util.EmptyStackException;
065: import java.util.Stack;
066:
067: import javax.xml.parsers.*;
068:
069: import org.xml.sax.SAXException;
070:
071: /**
072: * Pool of SAXParser objects
073: */
074: public class ParserPool {
075: private Stack parsers;
076: private SAXParserFactory factory;
077: private int capacity;
078:
079: public ParserPool(int capacity) {
080: this .capacity = capacity;
081: factory = new com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl(); //SAXParserFactory.newInstance();
082: factory.setNamespaceAware(true);
083: parsers = new Stack();
084: }
085:
086: public synchronized SAXParser get()
087: throws ParserConfigurationException, SAXException {
088:
089: try {
090: return (SAXParser) parsers.pop();
091: } catch (EmptyStackException e) {
092: return factory.newSAXParser();
093: }
094: }
095:
096: public synchronized void put(SAXParser parser) {
097: if (parsers.size() < capacity) {
098: parsers.push(parser);
099: }
100: }
101:
102: }
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