aoqi@0: /*
aoqi@0:  * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
aoqi@0:  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
aoqi@0:  *
aoqi@0:  * This code is free software; you can redistribute it and/or modify it
aoqi@0:  * under the terms of the GNU General Public License version 2 only, as
aoqi@0:  * published by the Free Software Foundation.  Oracle designates this
aoqi@0:  * particular file as subject to the "Classpath" exception as provided
aoqi@0:  * by Oracle in the LICENSE file that accompanied this code.
aoqi@0:  *
aoqi@0:  * This code is distributed in the hope that it will be useful, but WITHOUT
aoqi@0:  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
aoqi@0:  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
aoqi@0:  * version 2 for more details (a copy is included in the LICENSE file that
aoqi@0:  * accompanied this code).
aoqi@0:  *
aoqi@0:  * You should have received a copy of the GNU General Public License version
aoqi@0:  * 2 along with this work; if not, write to the Free Software Foundation,
aoqi@0:  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
aoqi@0:  *
aoqi@0:  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
aoqi@0:  * or visit www.oracle.com if you need additional information or have any
aoqi@0:  * questions.
aoqi@0:  */
aoqi@0: 
aoqi@0: package com.sun.xml.internal.ws.encoding;
aoqi@0: 
aoqi@0: import java.util.List;
aoqi@0: 
aoqi@0: import org.xml.sax.helpers.AttributesImpl;
aoqi@0: import org.xml.sax.ContentHandler;
aoqi@0: import org.xml.sax.SAXException;
aoqi@0: 
aoqi@0: import javax.xml.stream.XMLStreamReader;
aoqi@0: import javax.xml.stream.XMLStreamWriter;
aoqi@0: import javax.xml.stream.XMLStreamException;
aoqi@0: 
aoqi@0: import com.sun.xml.internal.ws.message.stream.StreamMessage;
aoqi@0: import com.sun.xml.internal.ws.encoding.StreamSOAPCodec;
aoqi@0: import com.sun.istack.internal.Nullable;
aoqi@0: import com.sun.istack.internal.NotNull;
aoqi@0: 
aoqi@0: /**
aoqi@0:  * Complete infoset about a start tag.
aoqi@0:  *
aoqi@0:  * <p>
aoqi@0:  * This is used between {@link StreamMessage} and {@link StreamSOAPCodec}
aoqi@0:  * to capture the infoset of the s:Envelope, s:Header, and s:Body elements.
aoqi@0:  *
aoqi@0:  *
aoqi@0:  * <h3>Design Note</h3>
aoqi@0:  * <p>
aoqi@0:  * Since StAX and SAX uses different null vs empty string convention, one has
aoqi@0:  * to choose which format we store things. It can go either way, but I'm assuming
aoqi@0:  * that we'll be using StAX more in JAX-WS, so things are kept in the StAX style
aoqi@0:  * in this class.
aoqi@0:  *
aoqi@0:  * @author Kohsuke Kawaguchi
aoqi@0:  */
aoqi@0: public final class TagInfoset {
aoqi@0:     /**
aoqi@0:      * Namespace declarations on this tag. Read-only.
aoqi@0:      *
aoqi@0:      * This is an array of the even length of the form { prefix0, uri0, prefix1, uri1, ... }.
aoqi@0:      *
aoqi@0:      * URIs/prefixes can be null (StAX-style)
aoqi@0:      */
aoqi@0:     public final @NotNull String[] ns;
aoqi@0:     /**
aoqi@0:      * Attributes on this tag. Read-only.
aoqi@0:      */
aoqi@0:     public final @NotNull AttributesImpl atts;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Prefix of the start tag in stax-style.
aoqi@0:      */
aoqi@0:     public final @Nullable String prefix;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Namespace URI of the start tag in stax-style.
aoqi@0:      */
aoqi@0:     public final @Nullable String nsUri;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Local name of the start tag.
aoqi@0:      */
aoqi@0:     public final @NotNull String localName;
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Lazily computed QName (i.e., "foo:bar")
aoqi@0:      */
aoqi@0:     private @Nullable String qname;
aoqi@0: 
aoqi@0:     public TagInfoset(String nsUri, String localName, String prefix, AttributesImpl atts, String... ns) {
aoqi@0:         this.nsUri = nsUri;
aoqi@0:         this.prefix = prefix;
aoqi@0:         this.localName = localName;
aoqi@0:         this.atts = atts;
aoqi@0:         this.ns = ns;
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Fills a {@link TagInfoset} object by the current element
aoqi@0:      * that the reader points to.
aoqi@0:      */
aoqi@0:     public TagInfoset(XMLStreamReader reader) {
aoqi@0:         prefix = reader.getPrefix();
aoqi@0:         nsUri = reader.getNamespaceURI();
aoqi@0:         localName = reader.getLocalName();
aoqi@0: 
aoqi@0:         int nsc = reader.getNamespaceCount();
aoqi@0:         if(nsc>0) {
aoqi@0:             ns = new String[nsc*2];
aoqi@0:             for(int i=0; i<nsc; i++){
aoqi@0:                 ns[i*2  ] = fixNull(reader.getNamespacePrefix(i));
aoqi@0:                 ns[i*2+1] = fixNull(reader.getNamespaceURI(i));
aoqi@0:             }
aoqi@0:         } else {
aoqi@0:             ns = EMPTY_ARRAY;
aoqi@0:         }
aoqi@0: 
aoqi@0:         int ac = reader.getAttributeCount();
aoqi@0:         if(ac>0) {
aoqi@0:             atts = new AttributesImpl();
aoqi@0:             StringBuilder sb = new StringBuilder();
aoqi@0:             for(int i=0; i< ac;i++){
aoqi@0:                 sb.setLength(0);
aoqi@0:                 String prefix = reader.getAttributePrefix(i);
aoqi@0:                 String localName = reader.getAttributeLocalName(i);
aoqi@0: 
aoqi@0:                 String qname;
aoqi@0:                 if(prefix != null && prefix.length()!=0){
aoqi@0:                     sb.append(prefix);
aoqi@0:                     sb.append(":");
aoqi@0:                     sb.append(localName);
aoqi@0:                     qname = sb.toString();
aoqi@0:                 } else {
aoqi@0:                     qname = localName;
aoqi@0:                 }
aoqi@0: 
aoqi@0:                 atts.addAttribute(
aoqi@0:                     fixNull(reader.getAttributeNamespace(i)),
aoqi@0:                     localName,
aoqi@0:                     qname,
aoqi@0:                     reader.getAttributeType(i),
aoqi@0:                     reader.getAttributeValue(i));
aoqi@0:             }
aoqi@0:         } else {
aoqi@0:             atts = EMPTY_ATTRIBUTES;
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Writes the start element event.
aoqi@0:      */
aoqi@0:     public void writeStart(ContentHandler contentHandler) throws SAXException {
aoqi@0:         for( int i=0; i<ns.length; i+=2 )
aoqi@0:             contentHandler.startPrefixMapping(fixNull(ns[i]),fixNull(ns[i+1]));
aoqi@0:         contentHandler.startElement(fixNull(nsUri), localName ,getQName(), atts);
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Writes the end element event.
aoqi@0:      */
aoqi@0:     public void writeEnd(ContentHandler contentHandler) throws SAXException{
aoqi@0:         contentHandler.endElement(fixNull(nsUri),localName,getQName());
aoqi@0:         for( int i=ns.length-2; i>=0; i-=2 ) {
aoqi@0:             contentHandler.endPrefixMapping(fixNull(ns[i]));
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     /**
aoqi@0:      * Writes the start element event.
aoqi@0:      */
aoqi@0:     public void writeStart(XMLStreamWriter w) throws XMLStreamException {
aoqi@0:         // write start tag.
aoqi@0:         if(prefix==null) {
aoqi@0:             if(nsUri==null)
aoqi@0:                 w.writeStartElement(localName);
aoqi@0:             else {
aoqi@0:                 //fix Null prefix. otherwise throws XMLStreamException,
aoqi@0:                 // if the namespace URI has not been bound to a prefix
aoqi@0:                 w.writeStartElement("",localName,nsUri);
aoqi@0:             }
aoqi@0:         } else {
aoqi@0:             w.writeStartElement(prefix,localName,nsUri);
aoqi@0:         }
aoqi@0: 
aoqi@0:         for( int i=0; i<ns.length; i+=2 ) {
aoqi@0:             w.writeNamespace(ns[i],ns[i+1]);
aoqi@0:         }
aoqi@0: 
aoqi@0:         for( int i=0; i<atts.getLength(); i++ ) {
aoqi@0:             String nsUri = atts.getURI(i);
aoqi@0:             if(nsUri==null || nsUri.length() ==0) {
aoqi@0:                 w.writeAttribute(atts.getLocalName(i),atts.getValue(i));
aoqi@0:             } else {
aoqi@0:                 String rawName = atts.getQName(i);
aoqi@0:                 String prefix = rawName.substring(0,rawName.indexOf(':'));
aoqi@0:                 w.writeAttribute(prefix,nsUri,atts.getLocalName(i),atts.getValue(i));
aoqi@0:             }
aoqi@0:         }
aoqi@0:     }
aoqi@0: 
aoqi@0:     private String getQName() {
aoqi@0:         if(qname!=null) return qname;
aoqi@0: 
aoqi@0:         StringBuilder sb = new StringBuilder();
aoqi@0:         if(prefix!=null){
aoqi@0:             sb.append(prefix);
aoqi@0:             sb.append(':');
aoqi@0:             sb.append(localName);
aoqi@0:             qname = sb.toString();
aoqi@0:         } else {
aoqi@0:             qname = localName;
aoqi@0:         }
aoqi@0:         return qname;
aoqi@0:     }
aoqi@0:     private static String fixNull(String s) {
aoqi@0:         if(s==null) return "";
aoqi@0:         else        return s;
aoqi@0:     }
aoqi@0: 
aoqi@0:     private static final String[] EMPTY_ARRAY = new String[0];
aoqi@0:     private static final AttributesImpl EMPTY_ATTRIBUTES = new AttributesImpl();
aoqi@0: 
aoqi@0:     public String getNamespaceURI(String prefix) {
aoqi@0:         int size = ns.length/2;
aoqi@0:         for(int i=0; i<size; i++){
aoqi@0:             String p = ns[i*2  ];
aoqi@0:             String n = ns[i*2+1];
aoqi@0:             if (prefix.equals(p)) return n;
aoqi@0:         }
aoqi@0:         return null;
aoqi@0:     }
aoqi@0: 
aoqi@0:     public String getPrefix(String namespaceURI) {
aoqi@0:         int size = ns.length/2;
aoqi@0:         for(int i=0; i<size; i++){
aoqi@0:             String p = ns[i*2  ];
aoqi@0:             String n = ns[i*2+1];
aoqi@0:             if (namespaceURI.equals(n)) return p;
aoqi@0:         }
aoqi@0:         return null;
aoqi@0:     }
aoqi@0:     //Who wants this?
aoqi@0:     public List<String> allPrefixes(String namespaceURI) {
aoqi@0:         int size = ns.length/2;
aoqi@0:         List<String> l = new java.util.ArrayList<String>();
aoqi@0:         for(int i=0; i<size; i++){
aoqi@0:             String p = ns[i*2  ];
aoqi@0:             String n = ns[i*2+1];
aoqi@0:             if (namespaceURI.equals(n)) l.add(p);
aoqi@0:         }
aoqi@0:         return l;
aoqi@0:     }
aoqi@0: }