1 /* 2 * Copyright (c) 1997, 2014, 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(); 49 factory = new com.sun.org.apache.xerces.internal.jaxp.SAXParserFactoryImpl(); 50 factory.setNamespaceAware(true); 51 for (int i = 0; i < capacity; i++) { 52 try { 53 queue.put(factory.newSAXParser()); 54 } catch (InterruptedException ex) { 55 Thread.currentThread().interrupt(); 56 throw new RuntimeException(ex); 57 } catch (ParserConfigurationException ex) { 58 throw new RuntimeException(ex); 59 } catch (SAXException ex) { 60 throw new RuntimeException(ex); 61 } 62 } 63 } 64 65 public SAXParser get() throws ParserConfigurationException, 66 SAXException { 67 68 try { 69 return (SAXParser) queue.take(); 70 } catch (InterruptedException ex) { 71 throw new SAXException(ex); 72 } 73 74 } 75 76 public boolean put(SAXParser parser) { 77 return queue.offer(parser); 78 } 79 80 public void returnParser(SAXParser saxParser) { 81 saxParser.reset(); 82 resetSaxParser(saxParser); 83 put(saxParser); 84 } 85 86 87 /** 88 * SAAJ Issue 46 :https://saaj.dev.java.net/issues/show_bug.cgi?id=46 89 * Xerces does not provide a way to reset the SymbolTable 90 * So we are trying to reset it using the proprietary code below. 91 * Temporary Until the bug : https://jaxp.dev.java.net/issues/show_bug.cgi?id=59 92 * is fixed. 93 * @param parser the parser from the pool whose Symbol Table needs to be reset. 94 */ 95 private void resetSaxParser(SAXParser parser) { 96 try { 97 //Object obj = parser.getProperty("http://apache.org/xml/properties/internal/symbol-table"); 98 com.sun.org.apache.xerces.internal.util.SymbolTable table = new com.sun.org.apache.xerces.internal.util.SymbolTable(); 99 parser.setProperty("http://apache.org/xml/properties/internal/symbol-table", table); 100 //obj = parser.getProperty("http://apache.org/xml/properties/internal/symbol-table"); 101 } catch (SAXNotRecognizedException ex) { 102 //nothing to do 103 } catch (SAXNotSupportedException ex) { 104 //nothing to do 105 } 106 } 107 108 }