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 +}
