/*
* Copyright (c) 2005, 2006, 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.ws.encoding;
import org.xml.sax.helpers.AttributesImpl;
import org.xml.sax.ContentHandler;
import org.xml.sax.SAXException;
import javax.xml.stream.XMLStreamReader;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.XMLStreamException;
import com.sun.xml.internal.ws.message.stream.StreamMessage;
import com.sun.xml.internal.ws.encoding.StreamSOAPCodec;
import com.sun.istack.internal.Nullable;
import com.sun.istack.internal.NotNull;
/**
* Complete infoset about a start tag.
*
* <p>
* This is used between {@link StreamMessage} and {@link StreamSOAPCodec}
* to capture the infoset of the s:Envelope, s:Header, and s:Body elements.
*
*
* <h3>Design Note</h3>
* <p>
* Since StAX and SAX uses different null vs empty string convention, one has
* to choose which format we store things. It can go either way, but I'm assuming
* that we'll be using StAX more in JAX-WS, so things are kept in the StAX style
* in this class.
*
* @author Kohsuke Kawaguchi
*/
public final class TagInfoset {
/**
* Namespace declarations on this tag. Read-only.
*
* This is an array of the even length of the form { prefix0, uri0, prefix1, uri1, ... }.
*
* URIs/prefixes can be null (StAX-style)
*/
public final @NotNull String[] ns;
/**
* Attributes on this tag. Read-only.
*/
public final @NotNull AttributesImpl atts;
/**
* Prefix of the start tag in stax-style.
*/
public final @Nullable String prefix;
/**
* Namespace URI of the start tag in stax-style.
*/
public final @Nullable String nsUri;
/**
* Local name of the start tag.
*/
public final @NotNull String localName;
/**
* Lazily computed QName (i.e., "foo:bar")
*/
private @Nullable String qname;
public TagInfoset(String nsUri, String localName, String prefix, AttributesImpl atts, String... ns) {
this.nsUri = nsUri;
this.prefix = prefix;
this.localName = localName;
this.atts = atts;
this.ns = ns;
}
/**
* Fills a {@link TagInfoset} object by the current element
* that the reader points to.
*/
public TagInfoset(XMLStreamReader reader) {
prefix = reader.getPrefix();
nsUri = reader.getNamespaceURI();
localName = reader.getLocalName();
int nsc = reader.getNamespaceCount();
if(nsc>0) {
ns = new String[nsc*2];
for(int i=0; i<nsc; i++){
ns[i*2 ] = fixNull(reader.getNamespacePrefix(i));
ns[i*2+1] = fixNull(reader.getNamespaceURI(i));
}
} else {
ns = EMPTY_ARRAY;
}
int ac = reader.getAttributeCount();
if(ac>0) {
atts = new AttributesImpl();
StringBuilder sb = new StringBuilder();
for(int i=0; i< ac;i++){
sb.setLength(0);
String prefix = reader.getAttributePrefix(i);
String localName = reader.getAttributeLocalName(i);
String qname;
if(prefix != null && prefix.length()!=0){
sb.append(prefix);
sb.append(":");
sb.append(localName);
qname = sb.toString();
} else {
qname = localName;
}
atts.addAttribute(
fixNull(reader.getAttributeNamespace(i)),
localName,
qname,
reader.getAttributeType(i),
reader.getAttributeValue(i));
}
} else {
atts = EMPTY_ATTRIBUTES;
}
}
/**
* Writes the start element event.
*/
public void writeStart(ContentHandler contentHandler) throws SAXException {
for( int i=0; i<ns.length; i+=2 )
contentHandler.startPrefixMapping(fixNull(ns[i]),fixNull(ns[i+1]));
contentHandler.startElement(fixNull(nsUri), localName ,getQName(), atts);
}
/**
* Writes the end element event.
*/
public void writeEnd(ContentHandler contentHandler) throws SAXException{
contentHandler.endElement(fixNull(nsUri),localName,getQName());
for( int i=ns.length-2; i>=0; i-=2 ) {
contentHandler.endPrefixMapping(fixNull(ns[i]));
}
}
/**
* Writes the start element event.
*/
public void writeStart(XMLStreamWriter w) throws XMLStreamException {
// write start tag.
if(prefix==null) {
if(nsUri==null)
w.writeStartElement(localName);
else {
//fix Null prefix. otherwise throws XMLStreamException,
// if the namespace URI has not been bound to a prefix
w.writeStartElement("",localName,nsUri);
}
} else {
w.writeStartElement(prefix,localName,nsUri);
}
for( int i=0; i<ns.length; i+=2 ) {
w.writeNamespace(ns[i],ns[i+1]);
}
for( int i=0; i<atts.getLength(); i++ ) {
String nsUri = atts.getURI(i);
if(nsUri==null || nsUri.length() ==0) {
w.writeAttribute(atts.getLocalName(i),atts.getValue(i));
} else {
String rawName = atts.getQName(i);
String prefix = rawName.substring(0,rawName.indexOf(':'));
w.writeAttribute(prefix,nsUri,atts.getLocalName(i),atts.getValue(i));
}
}
}
private String getQName() {
if(qname!=null) return qname;
StringBuilder sb = new StringBuilder();
if(prefix!=null){
sb.append(prefix);
sb.append(':');
sb.append(localName);
qname = sb.toString();
} else {
qname = localName;
}
return qname;
}
private static String fixNull(String s) {
if(s==null) return "";
else return s;
}
private static final String[] EMPTY_ARRAY = new String[0];
private static final AttributesImpl EMPTY_ATTRIBUTES = new AttributesImpl();
}