1 /* 2 * Copyright (c) 1997, 2012, 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 queue; 44 private SAXParserFactory factory; 45 private int capacity; 46 ParserPool(int capacity)47 public ParserPool(int capacity) { 48 this.capacity = capacity; 49 queue = new ArrayBlockingQueue(capacity); 50 //factory = SAXParserFactory.newInstance(); 51 factory = new com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl(); 52 factory.setNamespaceAware(true); 53 for (int i=0; i < capacity; i++) { 54 try { 55 queue.put(factory.newSAXParser()); 56 } catch (InterruptedException ex) { 57 Thread.currentThread().interrupt(); 58 throw new RuntimeException(ex); 59 } catch (ParserConfigurationException ex) { 60 throw new RuntimeException(ex); 61 } catch (SAXException ex) { 62 throw new RuntimeException(ex); 63 } 64 } 65 } 66 get()67 public SAXParser get() throws ParserConfigurationException, 68 SAXException { 69 70 try { 71 return (SAXParser) queue.take(); 72 } catch (InterruptedException ex) { 73 throw new SAXException(ex); 74 } 75 76 } 77 put(SAXParser parser)78 public void put(SAXParser parser) { 79 queue.offer(parser); 80 } 81 returnParser(SAXParser saxParser)82 public void returnParser(SAXParser saxParser) { 83 saxParser.reset(); 84 resetSaxParser(saxParser); 85 put(saxParser); 86 } 87 88 89 /** 90 * SAAJ Issue 46 :https://saaj.dev.java.net/issues/show_bug.cgi?id=46 91 * Xerces does not provide a way to reset the SymbolTable 92 * So we are trying to reset it using the proprietary code below. 93 * Temporary Until the bug : https://jaxp.dev.java.net/issues/show_bug.cgi?id=59 94 * is fixed. 95 * @param parser the parser from the pool whose Symbol Table needs to be reset. 96 */ resetSaxParser(SAXParser parser)97 private void resetSaxParser(SAXParser parser) { 98 try { 99 //Object obj = parser.getProperty("http://apache.org/xml/properties/internal/symbol-table"); 100 com.sun.org.apache.xerces.internal.util.SymbolTable table = new com.sun.org.apache.xerces.internal.util.SymbolTable(); 101 parser.setProperty("http://apache.org/xml/properties/internal/symbol-table", table); 102 //obj = parser.getProperty("http://apache.org/xml/properties/internal/symbol-table"); 103 } catch (SAXNotRecognizedException ex) { 104 //nothing to do 105 } catch (SAXNotSupportedException ex) { 106 //nothing to do 107 } 108 } 109 110 } 111