1 /* 2 * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package com.sun.xml.internal.messaging.saaj.util; 27 28 29 import org.xml.sax.SAXException; 30 import java.util.concurrent.ArrayBlockingQueue; 31 import java.util.concurrent.BlockingQueue; 32 import javax.xml.parsers.ParserConfigurationException; 33 import javax.xml.parsers.SAXParser; 34 import javax.xml.parsers.SAXParserFactory; 35 import org.xml.sax.SAXNotRecognizedException; 36 import org.xml.sax.SAXNotSupportedException; 37 38 39 /** 40 * Pool of SAXParser objects 41 */ 42 public class ParserPool { 43 private final BlockingQueue<SAXParser> queue; 44 private SAXParserFactory factory; 45 46 public ParserPool(int capacity) { 47 queue = new ArrayBlockingQueue<SAXParser>(capacity); 48 factory = SAXParserFactory.newInstance("com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl", SAAJUtil.getSystemClassLoader()); 49 factory.setNamespaceAware(true); 50 for (int i = 0; i < capacity; i++) { 51 try { 52 queue.put(factory.newSAXParser()); 53 } catch (InterruptedException ex) { 54 Thread.currentThread().interrupt(); 55 throw new RuntimeException(ex); 56 } catch (ParserConfigurationException ex) { 57 throw new RuntimeException(ex); 58 } catch (SAXException ex) { 59 throw new RuntimeException(ex); 60 } 61 } 62 } 63 64 public SAXParser get() throws ParserConfigurationException, 65 SAXException { 66 67 try { 68 return (SAXParser) queue.take(); 69 } catch (InterruptedException ex) { 70 throw new SAXException(ex); 71 } 72 73 } 74 75 public boolean put(SAXParser parser) { 76 return queue.offer(parser); 77 } 78 79 public void returnParser(SAXParser saxParser) { 80 saxParser.reset(); 81 put(saxParser); 82 } 83 84 }