--- old/src/java.xml.bind/share/classes/com/sun/xml/internal/bind/v2/runtime/output/FastInfosetStreamWriterOutput.java 2018-01-30 20:33:37.000000000 -0500 +++ /dev/null 2018-01-30 20:33:37.000000000 -0500 @@ -1,464 +0,0 @@ -/* - * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved. - * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. - * - * This code is free software; you can redistribute it and/or modify it - * under the terms of the GNU General Public License version 2 only, as - * published by the Free Software Foundation. Oracle designates this - * particular file as subject to the "Classpath" exception as provided - * by Oracle in the LICENSE file that accompanied this code. - * - * This code is distributed in the hope that it will be useful, but WITHOUT - * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or - * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License - * version 2 for more details (a copy is included in the LICENSE file that - * accompanied this code). - * - * You should have received a copy of the GNU General Public License version - * 2 along with this work; if not, write to the Free Software Foundation, - * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. - * - * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA - * or visit www.oracle.com if you need additional information or have any - * questions. - */ - -package com.sun.xml.internal.bind.v2.runtime.output; - -import com.sun.xml.internal.bind.marshaller.NoEscapeHandler; -import com.sun.xml.internal.bind.v2.runtime.JAXBContextImpl; -import com.sun.xml.internal.bind.v2.runtime.Name; -import com.sun.xml.internal.bind.v2.runtime.XMLSerializer; -import com.sun.xml.internal.bind.v2.runtime.unmarshaller.Base64Data; -import com.sun.xml.internal.fastinfoset.EncodingConstants; -import com.sun.xml.internal.fastinfoset.stax.StAXDocumentSerializer; -import com.sun.xml.internal.org.jvnet.fastinfoset.VocabularyApplicationData; -import org.xml.sax.SAXException; - -import javax.xml.bind.JAXBContext; -import javax.xml.stream.XMLStreamException; -import java.io.IOException; -import java.util.Collection; -import java.util.Map; -import java.util.WeakHashMap; - -/** - * {@link XmlOutput} for {@link StAXDocumentSerializer}. - *

- * This class is responsible for managing the indexing of elements, attributes - * and local names that are known to JAXB by way of the JAXBContext (generated - * from JAXB beans or schema). The pre-encoded UTF-8 representations of known - * local names are also utilized. - *

- * The lookup of elements, attributes and local names with respect to a context - * is very efficient. It relies on an incrementing base line so that look up is - * performed in O(1) time and only uses static memory. When the base line reaches - * a point where integer overflow will occur the arrays and base line are reset - * (such an event is rare and will have little impact on performance). - *

- * A weak map of JAXB contexts to optimized tables for attributes, elements and - * local names is utilized and stored on the LowLevel StAX serializer. Thus, - * optimized serializing can work other multiple serializing of JAXB beans using - * the same LowLevel StAX serializer instance. This approach works best when JAXB - * contexts are only created once per schema or JAXB beans (which is the recommended - * practice as the creation JAXB contexts are expensive, they are thread safe and - * can be reused). - * - * @author Paul.Sandoz@Sun.Com - */ -public final class FastInfosetStreamWriterOutput extends XMLStreamWriterOutput { - private final StAXDocumentSerializer fiout; - private final Encoded[] localNames; - private final TablesPerJAXBContext tables; - - /** - * Holder for the optimzed element, attribute and - * local name tables. - */ - final static class TablesPerJAXBContext { - final int[] elementIndexes; - final int[] elementIndexPrefixes; - - final int[] attributeIndexes; - final int[] localNameIndexes; - - /** - * The offset of the index - */ - int indexOffset; - - /** - * The the maximum known value of an index - */ - int maxIndex; - - /** - * True if the tables require clearing - */ - boolean requiresClear; - - /** - * Create a new set of tables for a JAXB context. - *

- * @param context the JAXB context. - * @param initialIndexOffset the initial index offset to calculate - * the maximum possible index - * - */ - TablesPerJAXBContext(JAXBContextImpl context, int initialIndexOffset) { - elementIndexes = new int[context.getNumberOfElementNames()]; - elementIndexPrefixes = new int[context.getNumberOfElementNames()]; - attributeIndexes = new int[context.getNumberOfAttributeNames()]; - localNameIndexes = new int[context.getNumberOfLocalNames()]; - - indexOffset = 1; - maxIndex = initialIndexOffset + elementIndexes.length + attributeIndexes.length; - } - - /** - * Require that tables are cleared. - */ - public void requireClearTables() { - requiresClear = true; - } - - /** - * Clear or reset the tables. - *

- * @param intialIndexOffset the initial index offset to calculate - * the maximum possible index - */ - public void clearOrResetTables(int intialIndexOffset) { - if (requiresClear) { - requiresClear = false; - - // Increment offset to new position - indexOffset += maxIndex; - // Reset the maximum known value of an index - maxIndex = intialIndexOffset + elementIndexes.length + attributeIndexes.length; - // Check if there is enough free space - // If overflow - if ((indexOffset + maxIndex) < 0) { - clearAll(); - } - } else { - // Reset the maximum known value of an index - maxIndex = intialIndexOffset + elementIndexes.length + attributeIndexes.length; - // Check if there is enough free space - // If overflow - if ((indexOffset + maxIndex) < 0) { - resetAll(); - } - } - } - - private void clearAll() { - clear(elementIndexes); - clear(attributeIndexes); - clear(localNameIndexes); - indexOffset = 1; - } - - private void clear(int[] array) { - for (int i = 0; i < array.length; i++) { - array[i] = 0; - } - } - - /** - * Increment the maximum know index value - *

- * The indexes are preserved. - */ - public void incrementMaxIndexValue() { - // Increment the maximum value of an index - maxIndex++; - // Check if there is enough free space - // If overflow - if ((indexOffset + maxIndex) < 0) { - resetAll(); - } - } - - private void resetAll() { - clear(elementIndexes); - clear(attributeIndexes); - clear(localNameIndexes); - indexOffset = 1; - } - - private void reset(int[] array) { - for (int i = 0; i < array.length; i++) { - if (array[i] > indexOffset) { - array[i] = array[i] - indexOffset + 1; - } else { - array[i] = 0; - } - } - } - - } - - /** - * Holder of JAXB contexts -> tables. - *

- * An instance will be registered with the - * {@link StAXDocumentSerializer}. - */ - final static class AppData implements VocabularyApplicationData { - final Map contexts = - new WeakHashMap(); - final Collection collectionOfContexts = contexts.values(); - - /** - * Clear all the tables. - */ - public void clear() { - for(TablesPerJAXBContext c : collectionOfContexts) - c.requireClearTables(); - } - } - - public FastInfosetStreamWriterOutput(StAXDocumentSerializer out, - JAXBContextImpl context) { - super(out, NoEscapeHandler.theInstance); - - this.fiout = out; - this.localNames = context.getUTF8NameTable(); - - final VocabularyApplicationData vocabAppData = fiout.getVocabularyApplicationData(); - AppData appData = null; - if (vocabAppData == null || !(vocabAppData instanceof AppData)) { - appData = new AppData(); - fiout.setVocabularyApplicationData(appData); - } else { - appData = (AppData)vocabAppData; - } - - final TablesPerJAXBContext tablesPerContext = appData.contexts.get(context); - if (tablesPerContext != null) { - tables = tablesPerContext; - /** - * Obtain the current local name index. Thus will be used to - * calculate the maximum index value when serializing for this context - */ - tables.clearOrResetTables(out.getLocalNameIndex()); - } else { - tables = new TablesPerJAXBContext(context, out.getLocalNameIndex()); - appData.contexts.put(context, tables); - } - } - - @Override - public void startDocument(XMLSerializer serializer, boolean fragment, - int[] nsUriIndex2prefixIndex, NamespaceContextImpl nsContext) - throws IOException, SAXException, XMLStreamException { - super.startDocument(serializer, fragment, nsUriIndex2prefixIndex, nsContext); - - if (fragment) - fiout.initiateLowLevelWriting(); - } - - @Override - public void endDocument(boolean fragment) throws IOException, SAXException, XMLStreamException { - super.endDocument(fragment); - } - - @Override - public void beginStartTag(Name name) throws IOException { - fiout.writeLowLevelTerminationAndMark(); - - if (nsContext.getCurrent().count() == 0) { - final int qNameIndex = tables.elementIndexes[name.qNameIndex] - tables.indexOffset; - final int prefixIndex = nsUriIndex2prefixIndex[name.nsUriIndex]; - - if (qNameIndex >= 0 && - tables.elementIndexPrefixes[name.qNameIndex] == prefixIndex) { - fiout.writeLowLevelStartElementIndexed(EncodingConstants.ELEMENT, qNameIndex); - } else { - tables.elementIndexes[name.qNameIndex] = fiout.getNextElementIndex() + tables.indexOffset; - tables.elementIndexPrefixes[name.qNameIndex] = prefixIndex; - writeLiteral(EncodingConstants.ELEMENT | EncodingConstants.ELEMENT_LITERAL_QNAME_FLAG, - name, - nsContext.getPrefix(prefixIndex), - nsContext.getNamespaceURI(prefixIndex)); - } - } else { - beginStartTagWithNamespaces(name); - } - } - - public void beginStartTagWithNamespaces(Name name) throws IOException { - final NamespaceContextImpl.Element nse = nsContext.getCurrent(); - - fiout.writeLowLevelStartNamespaces(); - for (int i = nse.count() - 1; i >= 0; i--) { - final String uri = nse.getNsUri(i); - if (uri.length() == 0 && nse.getBase() == 1) - continue; // no point in definint xmlns='' on the root - fiout.writeLowLevelNamespace(nse.getPrefix(i), uri); - } - fiout.writeLowLevelEndNamespaces(); - - final int qNameIndex = tables.elementIndexes[name.qNameIndex] - tables.indexOffset; - final int prefixIndex = nsUriIndex2prefixIndex[name.nsUriIndex]; - - if (qNameIndex >= 0 && - tables.elementIndexPrefixes[name.qNameIndex] == prefixIndex) { - fiout.writeLowLevelStartElementIndexed(0, qNameIndex); - } else { - tables.elementIndexes[name.qNameIndex] = fiout.getNextElementIndex() + tables.indexOffset; - tables.elementIndexPrefixes[name.qNameIndex] = prefixIndex; - writeLiteral(EncodingConstants.ELEMENT_LITERAL_QNAME_FLAG, - name, - nsContext.getPrefix(prefixIndex), - nsContext.getNamespaceURI(prefixIndex)); - } - } - - @Override - public void attribute(Name name, String value) throws IOException { - fiout.writeLowLevelStartAttributes(); - - final int qNameIndex = tables.attributeIndexes[name.qNameIndex] - tables.indexOffset; - if (qNameIndex >= 0) { - fiout.writeLowLevelAttributeIndexed(qNameIndex); - } else { - tables.attributeIndexes[name.qNameIndex] = fiout.getNextAttributeIndex() + tables.indexOffset; - - final int namespaceURIId = name.nsUriIndex; - if (namespaceURIId == -1) { - writeLiteral(EncodingConstants.ATTRIBUTE_LITERAL_QNAME_FLAG, - name, - "", - ""); - } else { - final int prefix = nsUriIndex2prefixIndex[namespaceURIId]; - writeLiteral(EncodingConstants.ATTRIBUTE_LITERAL_QNAME_FLAG, - name, - nsContext.getPrefix(prefix), - nsContext.getNamespaceURI(prefix)); - } - } - - fiout.writeLowLevelAttributeValue(value); - } - - private void writeLiteral(int type, Name name, String prefix, String namespaceURI) throws IOException { - final int localNameIndex = tables.localNameIndexes[name.localNameIndex] - tables.indexOffset; - - if (localNameIndex < 0) { - tables.localNameIndexes[name.localNameIndex] = fiout.getNextLocalNameIndex() + tables.indexOffset; - - fiout.writeLowLevelStartNameLiteral( - type, - prefix, - localNames[name.localNameIndex].buf, - namespaceURI); - } else { - fiout.writeLowLevelStartNameLiteral( - type, - prefix, - localNameIndex, - namespaceURI); - } - } - - @Override - public void endStartTag() throws IOException { - fiout.writeLowLevelEndStartElement(); - } - - @Override - public void endTag(Name name) throws IOException { - fiout.writeLowLevelEndElement(); - } - - @Override - public void endTag(int prefix, String localName) throws IOException { - fiout.writeLowLevelEndElement(); - } - - - @Override - public void text(Pcdata value, boolean needsSeparatingWhitespace) throws IOException { - if (needsSeparatingWhitespace) - fiout.writeLowLevelText(" "); - - /* - * Check if the CharSequence is from a base64Binary data type - */ - if (!(value instanceof Base64Data)) { - final int len = value.length(); - if(len 0) { - final NamespaceContextImpl.Element nse = nsContext.getCurrent(); - - fiout.writeLowLevelStartNamespaces(); - for (int i = nse.count() - 1; i >= 0; i--) { - final String uri = nse.getNsUri(i); - if (uri.length() == 0 && nse.getBase() == 1) - continue; // no point in definint xmlns='' on the root - fiout.writeLowLevelNamespace(nse.getPrefix(i), uri); - } - fiout.writeLowLevelEndNamespaces(); - - type= 0; - } - - final boolean isIndexed = fiout.writeLowLevelStartElement( - type, - nsContext.getPrefix(prefix), - localName, - nsContext.getNamespaceURI(prefix)); - - if (!isIndexed) - tables.incrementMaxIndexValue(); - } - - @Override - public void attribute(int prefix, String localName, String value) throws IOException { - fiout.writeLowLevelStartAttributes(); - - boolean isIndexed; - if (prefix == -1) - isIndexed = fiout.writeLowLevelAttribute("", "", localName); - else - isIndexed = fiout.writeLowLevelAttribute( - nsContext.getPrefix(prefix), - nsContext.getNamespaceURI(prefix), - localName); - - if (!isIndexed) - tables.incrementMaxIndexValue(); - - fiout.writeLowLevelAttributeValue(value); - } -}