1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000 1.2 +++ b/src/share/jaxws_classes/com/sun/xml/internal/stream/buffer/MutableXMLStreamBuffer.java Wed Apr 27 01:27:09 2016 +0800 1.3 @@ -0,0 +1,247 @@ 1.4 +/* 1.5 + * Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved. 1.6 + * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 1.7 + * 1.8 + * This code is free software; you can redistribute it and/or modify it 1.9 + * under the terms of the GNU General Public License version 2 only, as 1.10 + * published by the Free Software Foundation. Oracle designates this 1.11 + * particular file as subject to the "Classpath" exception as provided 1.12 + * by Oracle in the LICENSE file that accompanied this code. 1.13 + * 1.14 + * This code is distributed in the hope that it will be useful, but WITHOUT 1.15 + * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 1.16 + * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 1.17 + * version 2 for more details (a copy is included in the LICENSE file that 1.18 + * accompanied this code). 1.19 + * 1.20 + * You should have received a copy of the GNU General Public License version 1.21 + * 2 along with this work; if not, write to the Free Software Foundation, 1.22 + * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 1.23 + * 1.24 + * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 1.25 + * or visit www.oracle.com if you need additional information or have any 1.26 + * questions. 1.27 + */ 1.28 + 1.29 +package com.sun.xml.internal.stream.buffer; 1.30 + 1.31 +import com.sun.xml.internal.stream.buffer.sax.Properties; 1.32 +import com.sun.xml.internal.stream.buffer.sax.SAXBufferCreator; 1.33 +import com.sun.xml.internal.stream.buffer.stax.StreamReaderBufferCreator; 1.34 +import com.sun.xml.internal.stream.buffer.stax.StreamWriterBufferCreator; 1.35 +import org.xml.sax.ContentHandler; 1.36 +import org.xml.sax.SAXException; 1.37 +import org.xml.sax.XMLReader; 1.38 + 1.39 +import javax.xml.stream.XMLStreamException; 1.40 +import javax.xml.stream.XMLStreamReader; 1.41 +import javax.xml.stream.XMLStreamWriter; 1.42 +import java.io.IOException; 1.43 +import java.io.InputStream; 1.44 + 1.45 +/** 1.46 + * 1.47 + * A mutable stream-based buffer of an XML infoset. 1.48 + * 1.49 + * <p> 1.50 + * A MutableXMLStreamBuffer is created using specific SAX and StAX-based 1.51 + * creators. Utility methods on MutableXMLStreamBuffer are provided for 1.52 + * such functionality that utilize SAX and StAX-based creators. 1.53 + * 1.54 + * <p> 1.55 + * Once instantiated the same instance of a MutableXMLStreamBuffer may be reused for 1.56 + * creation to reduce the amount of Objects instantiated and garbage 1.57 + * collected that are required for internally representing an XML infoset. 1.58 + * 1.59 + * <p> 1.60 + * A MutableXMLStreamBuffer is not designed to be created and processed 1.61 + * concurrently. If done so unspecified behaviour may occur. 1.62 + */ 1.63 +public class MutableXMLStreamBuffer extends XMLStreamBuffer { 1.64 + /** 1.65 + * The default array size for the arrays used in internal representation 1.66 + * of the XML infoset. 1.67 + */ 1.68 + public static final int DEFAULT_ARRAY_SIZE = 512; 1.69 + 1.70 + /** 1.71 + * Create a new MutableXMLStreamBuffer using the 1.72 + * {@link MutableXMLStreamBuffer#DEFAULT_ARRAY_SIZE}. 1.73 + */ 1.74 + public MutableXMLStreamBuffer() { 1.75 + this(DEFAULT_ARRAY_SIZE); 1.76 + } 1.77 + 1.78 + /** 1.79 + * Set the system identifier for this buffer. 1.80 + * @param systemId The system identifier. 1.81 + */ 1.82 + public void setSystemId(String systemId) { 1.83 + this.systemId = systemId; 1.84 + } 1.85 + 1.86 + /** 1.87 + * Create a new MutableXMLStreamBuffer. 1.88 + * 1.89 + * @param size 1.90 + * The size of the arrays used in the internal representation 1.91 + * of the XML infoset. 1.92 + * @throws NegativeArraySizeException 1.93 + * If the <code>size</code> argument is less than <code>0</code>. 1.94 + */ 1.95 + public MutableXMLStreamBuffer(int size) { 1.96 + _structure = new FragmentedArray<byte[]>(new byte[size]); 1.97 + _structureStrings = new FragmentedArray<String[]>(new String[size]); 1.98 + _contentCharactersBuffer = new FragmentedArray<char[]>(new char[4096]); 1.99 + _contentObjects = new FragmentedArray<Object[]>(new Object[size]); 1.100 + 1.101 + // Set the first element of structure array to indicate an empty buffer 1.102 + // that has not been created 1.103 + _structure.getArray()[0] = (byte) AbstractCreatorProcessor.T_END; 1.104 + } 1.105 + 1.106 + /** 1.107 + * Create contents of a buffer from a XMLStreamReader. 1.108 + * 1.109 + * <p> 1.110 + * The MutableXMLStreamBuffer is reset (see {@link #reset}) before creation. 1.111 + * 1.112 + * <p> 1.113 + * The MutableXMLStreamBuffer is created by consuming the events on the XMLStreamReader using 1.114 + * an instance of {@link StreamReaderBufferCreator}. 1.115 + * 1.116 + * @param reader 1.117 + * A XMLStreamReader to read from to create. 1.118 + */ 1.119 + public void createFromXMLStreamReader(XMLStreamReader reader) throws XMLStreamException { 1.120 + reset(); 1.121 + StreamReaderBufferCreator c = new StreamReaderBufferCreator(this); 1.122 + c.create(reader); 1.123 + } 1.124 + 1.125 + /** 1.126 + * Create contents of a buffer from a XMLStreamWriter. 1.127 + * 1.128 + * <p> 1.129 + * The MutableXMLStreamBuffer is reset (see {@link #reset}) before creation. 1.130 + * 1.131 + * <p> 1.132 + * The MutableXMLStreamBuffer is created by consuming events on a XMLStreamWriter using 1.133 + * an instance of {@link StreamWriterBufferCreator}. 1.134 + */ 1.135 + public XMLStreamWriter createFromXMLStreamWriter() { 1.136 + reset(); 1.137 + return new StreamWriterBufferCreator(this); 1.138 + } 1.139 + 1.140 + /** 1.141 + * Create contents of a buffer from a {@link SAXBufferCreator}. 1.142 + * 1.143 + * <p> 1.144 + * The MutableXMLStreamBuffer is reset (see {@link #reset}) before creation. 1.145 + * 1.146 + * <p> 1.147 + * The MutableXMLStreamBuffer is created by consuming events from a {@link ContentHandler} using 1.148 + * an instance of {@link SAXBufferCreator}. 1.149 + * 1.150 + * @return The {@link SAXBufferCreator} to create from. 1.151 + */ 1.152 + public SAXBufferCreator createFromSAXBufferCreator() { 1.153 + reset(); 1.154 + SAXBufferCreator c = new SAXBufferCreator(); 1.155 + c.setBuffer(this); 1.156 + return c; 1.157 + } 1.158 + 1.159 + /** 1.160 + * Create contents of a buffer from a {@link XMLReader} and {@link InputStream}. 1.161 + * 1.162 + * <p> 1.163 + * The MutableXMLStreamBuffer is reset (see {@link #reset}) before creation. 1.164 + * 1.165 + * <p> 1.166 + * The MutableXMLStreamBuffer is created by using an instance of {@link SAXBufferCreator} 1.167 + * and registering associated handlers on the {@link XMLReader}. 1.168 + * 1.169 + * @param reader 1.170 + * The {@link XMLReader} to use for parsing. 1.171 + * @param in 1.172 + * The {@link InputStream} to be parsed. 1.173 + */ 1.174 + public void createFromXMLReader(XMLReader reader, InputStream in) throws SAXException, IOException { 1.175 + createFromXMLReader(reader, in, null); 1.176 + } 1.177 + 1.178 + /** 1.179 + * Create contents of a buffer from a {@link XMLReader} and {@link InputStream}. 1.180 + * 1.181 + * <p> 1.182 + * The MutableXMLStreamBuffer is reset (see {@link #reset}) before creation. 1.183 + * 1.184 + * <p> 1.185 + * The MutableXMLStreamBuffer is created by using an instance of {@link SAXBufferCreator} 1.186 + * and registering associated handlers on the {@link XMLReader}. 1.187 + * 1.188 + * @param reader 1.189 + * The {@link XMLReader} to use for parsing. 1.190 + * @param in 1.191 + * The {@link InputStream} to be parsed. 1.192 + * @param systemId 1.193 + * The system ID of the input stream. 1.194 + */ 1.195 + public void createFromXMLReader(XMLReader reader, InputStream in, String systemId) throws SAXException, IOException { 1.196 + reset(); 1.197 + SAXBufferCreator c = new SAXBufferCreator(this); 1.198 + 1.199 + reader.setContentHandler(c); 1.200 + reader.setDTDHandler(c); 1.201 + reader.setProperty(Properties.LEXICAL_HANDLER_PROPERTY, c); 1.202 + 1.203 + c.create(reader, in, systemId); 1.204 + } 1.205 + 1.206 + /** 1.207 + * Reset the MutableXMLStreamBuffer. 1.208 + * 1.209 + * <p> 1.210 + * This method will reset the MutableXMLStreamBuffer to a state of being "uncreated" 1.211 + * similar to the state of a newly instantiated MutableXMLStreamBuffer. 1.212 + * 1.213 + * <p> 1.214 + * As many Objects as possible will be retained for reuse in future creation. 1.215 + */ 1.216 + public void reset() { 1.217 + // Reset the ptrs in arrays to 0 1.218 + _structurePtr = 1.219 + _structureStringsPtr = 1.220 + _contentCharactersBufferPtr = 1.221 + _contentObjectsPtr = 0; 1.222 + 1.223 + // Set the first element of structure array to indicate an empty buffer 1.224 + // that has not been created 1.225 + _structure.getArray()[0] = (byte)AbstractCreatorProcessor.T_END; 1.226 + 1.227 + // Clean up content objects 1.228 + _contentObjects.setNext(null); 1.229 + final Object[] o = _contentObjects.getArray(); 1.230 + for (int i = 0; i < o.length; i++) { 1.231 + if (o[i] != null) { 1.232 + o[i] = null; 1.233 + } else { 1.234 + break; 1.235 + } 1.236 + } 1.237 + 1.238 + treeCount = 0; 1.239 + 1.240 + /* 1.241 + * TODO consider truncating the size of _structureStrings and 1.242 + * _contentCharactersBuffer to limit the memory used by the buffer 1.243 + */ 1.244 + } 1.245 + 1.246 + 1.247 + protected void setHasInternedStrings(boolean hasInternedStrings) { 1.248 + _hasInternedStrings = hasInternedStrings; 1.249 + } 1.250 +}