1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/src/share/jaxws_classes/com/sun/tools/internal/xjc/reader/xmlschema/bindinfo/ForkingFilter.java Wed Apr 27 01:27:09 2016 +0800
1.3 @@ -0,0 +1,181 @@
1.4 +/*
1.5 + * Copyright (c) 1997, 2011, 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.tools.internal.xjc.reader.xmlschema.bindinfo;
1.30 +
1.31 +import com.sun.xml.internal.bind.v2.WellKnownNamespace;
1.32 +import java.util.ArrayList;
1.33 +
1.34 +import org.xml.sax.Attributes;
1.35 +import org.xml.sax.ContentHandler;
1.36 +import org.xml.sax.Locator;
1.37 +import org.xml.sax.SAXException;
1.38 +import org.xml.sax.XMLFilter;
1.39 +import org.xml.sax.helpers.XMLFilterImpl;
1.40 +
1.41 +/**
1.42 + * {@link XMLFilter} that can fork an event to another {@link ContentHandler}
1.43 + * in the middle.
1.44 + *
1.45 + * <p>
1.46 + * The side handler receives SAX events before the next handler in the filter chain does.
1.47 + *
1.48 + * @author Kohsuke Kawaguchi
1.49 + */
1.50 +public class ForkingFilter extends XMLFilterImpl {
1.51 +
1.52 + /**
1.53 + * Non-null if we are also forking events to this handler.
1.54 + */
1.55 + private ContentHandler side;
1.56 +
1.57 + /**
1.58 + * The depth of the current element that the {@link #side} handler
1.59 + * is seeing.
1.60 + */
1.61 + private int depth;
1.62 +
1.63 + /**
1.64 + * In-scope namespace mapping.
1.65 + * namespaces[2n ] := prefix
1.66 + * namespaces[2n+1] := namespace URI
1.67 + */
1.68 + private final ArrayList<String> namespaces = new ArrayList<String>();
1.69 +
1.70 + private Locator loc;
1.71 +
1.72 + public ForkingFilter() {
1.73 + }
1.74 +
1.75 + public ForkingFilter(ContentHandler next) {
1.76 + setContentHandler(next);
1.77 + }
1.78 +
1.79 + public ContentHandler getSideHandler() {
1.80 + return side;
1.81 + }
1.82 +
1.83 + @Override
1.84 + public void setDocumentLocator(Locator locator) {
1.85 + super.setDocumentLocator(locator);
1.86 + this.loc = locator;
1.87 + }
1.88 +
1.89 + public Locator getDocumentLocator() {
1.90 + return loc;
1.91 + }
1.92 +
1.93 + @Override
1.94 + public void startDocument() throws SAXException {
1.95 + reset();
1.96 + super.startDocument();
1.97 + }
1.98 +
1.99 + private void reset() {
1.100 + namespaces.clear();
1.101 + side = null;
1.102 + depth = 0;
1.103 + }
1.104 +
1.105 + @Override
1.106 + public void endDocument() throws SAXException {
1.107 + loc = null;
1.108 + reset();
1.109 + super.endDocument();
1.110 + }
1.111 +
1.112 + @Override
1.113 + public void startPrefixMapping(String prefix, String uri) throws SAXException {
1.114 + if (WellKnownNamespace.XML_NAMESPACE_URI.equals(uri)) return; //xml prefix shall not be declared based on jdk api javadoc
1.115 + if(side!=null)
1.116 + side.startPrefixMapping(prefix,uri);
1.117 + namespaces.add(prefix);
1.118 + namespaces.add(uri);
1.119 + super.startPrefixMapping(prefix,uri);
1.120 + }
1.121 +
1.122 + @Override
1.123 + public void endPrefixMapping(String prefix) throws SAXException {
1.124 + if ("xml".equals(prefix)) return; //xml prefix shall not be declared based on jdk api javadoc
1.125 + if(side!=null)
1.126 + side.endPrefixMapping(prefix);
1.127 + super.endPrefixMapping(prefix);
1.128 + namespaces.remove(namespaces.size()-1);
1.129 + namespaces.remove(namespaces.size()-1);
1.130 + }
1.131 +
1.132 + @Override
1.133 + public void startElement(String uri, String localName, String qName, Attributes atts) throws SAXException {
1.134 + if(side!=null) {
1.135 + side.startElement(uri,localName,qName,atts);
1.136 + depth++;
1.137 + }
1.138 + super.startElement(uri, localName, qName, atts);
1.139 + }
1.140 +
1.141 + /**
1.142 + * Starts the event forking.
1.143 + */
1.144 + public void startForking(String uri, String localName, String qName, Attributes atts, ContentHandler side) throws SAXException {
1.145 + if(this.side!=null) throw new IllegalStateException(); // can't fork to two handlers
1.146 +
1.147 + this.side = side;
1.148 + depth = 1;
1.149 + side.setDocumentLocator(loc);
1.150 + side.startDocument();
1.151 + for( int i=0; i<namespaces.size(); i+=2 )
1.152 + side.startPrefixMapping(namespaces.get(i),namespaces.get(i+1));
1.153 + side.startElement(uri,localName,qName,atts);
1.154 + }
1.155 +
1.156 + @Override
1.157 + public void endElement(String uri, String localName, String qName) throws SAXException {
1.158 + if(side!=null) {
1.159 + side.endElement(uri,localName,qName);
1.160 + depth--;
1.161 + if(depth==0) {
1.162 + for( int i=namespaces.size()-2; i>=0; i-=2 )
1.163 + side.endPrefixMapping(namespaces.get(i));
1.164 + side.endDocument();
1.165 + side = null;
1.166 + }
1.167 + }
1.168 + super.endElement(uri, localName, qName);
1.169 + }
1.170 +
1.171 + @Override
1.172 + public void characters(char ch[], int start, int length) throws SAXException {
1.173 + if(side!=null)
1.174 + side.characters(ch, start, length);
1.175 + super.characters(ch, start, length);
1.176 + }
1.177 +
1.178 + @Override
1.179 + public void ignorableWhitespace(char ch[], int start, int length) throws SAXException {
1.180 + if(side!=null)
1.181 + side.ignorableWhitespace(ch, start, length);
1.182 + super.ignorableWhitespace(ch, start, length);
1.183 + }
1.184 +}
