/*
* The Apache Software License, Version 1.1
*
*
* Copyright (c) 1999-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Xerces" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation and was
* originally based on software copyright (c) 1999, International
* Business Machines, Inc., http://www.apache.org. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
package org.apache.xerces.dom;
import org.w3c.dom.DOMException;
import org.w3c.dom.Attr;
import org.apache.xerces.util.URI;
import org.apache.xerces.xni.NamespaceContext;
/**
* ElementNSImpl inherits from ElementImpl and adds namespace support.
* <P>
* The qualified name is the node name, and we store localName which is also
* used in all queries. On the other hand we recompute the prefix when
* necessary.
*
* @version $Id: ElementNSImpl.java,v 1.28 2002/11/02 01:02:23 elena Exp $
*/
public class ElementNSImpl
extends ElementImpl {
//
// Constants
//
/** Serialization version. */
static final long serialVersionUID = -9142310625494392642L;
static final String xmlURI = "http://www.w3.org/XML/1998/namespace";
//
// Data
//
/** DOM2: Namespace URI. */
protected String namespaceURI;
/** DOM2: localName. */
protected String localName;
protected ElementNSImpl() {
super();
}
/**
* DOM2: Constructor for Namespace implementation.
*/
protected ElementNSImpl(CoreDocumentImpl ownerDocument,
String namespaceURI,
String qualifiedName)
throws DOMException
{
super(ownerDocument, qualifiedName);
setName(namespaceURI, qualifiedName);
}
private void setName(String namespaceURI, String qname) {
String prefix;
// DOM Level 3: namespace URI is never empty string.
this.namespaceURI = namespaceURI;
if (namespaceURI != null) {
this.namespaceURI =
(namespaceURI.length() == 0) ? null : namespaceURI.intern();
}
int colon1 = qname.indexOf(':');
int colon2 = qname.lastIndexOf(':');
ownerDocument().checkNamespaceWF(qname, colon1, colon2);
if (colon1 < 0) {
// there is no prefix
localName = qname;
ownerDocument().checkQName(null, localName);
if (qname.equals("xmlns")
&& (namespaceURI == null
|| namespaceURI != NamespaceContext.XMLNS_URI)
|| (namespaceURI == NamespaceContext.XMLNS_URI
&& !qname.equals("xmlns"))) {
String msg =
DOMMessageFormatter.formatMessage(
DOMMessageFormatter.DOM_DOMAIN,
"NAMESPACE_ERR",
null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
else {
prefix = qname.substring(0, colon1);
localName = qname.substring(colon2 + 1);
ownerDocument().checkQName(prefix, localName);
ownerDocument().checkDOMNSErr(prefix, namespaceURI);
}
}
// when local name is known
protected ElementNSImpl(CoreDocumentImpl ownerDocument,
String namespaceURI, String qualifiedName,
String localName)
throws DOMException
{
super(ownerDocument, qualifiedName);
this.localName = localName;
this.namespaceURI = namespaceURI;
}
// for DeferredElementImpl
protected ElementNSImpl(CoreDocumentImpl ownerDocument,
String value) {
super(ownerDocument, value);
}
// Support for DOM Level 3 renameNode method.
// Note: This only deals with part of the pb. CoreDocumentImpl
// does all the work.
void rename(String namespaceURI, String qualifiedName)
{
if (needsSyncData()) {
synchronizeData();
}
this.name = qualifiedName;
setName(namespaceURI, qualifiedName);
reconcileDefaultAttributes();
}
/**
* NON-DOM: resets this node and sets specified values for the node
*
* @param ownerDocument
* @param namespaceURI
* @param qualifiedName
* @param localName
*/
protected void setValues (CoreDocumentImpl ownerDocument,
String namespaceURI, String qualifiedName,
String localName){
// remove children first
firstChild = null;
previousSibling = null;
nextSibling = null;
fNodeListCache = null;
// set owner document
attributes = null;
super.flags = 0;
setOwnerDocument(ownerDocument);
// synchronizeData will initialize attributes
needsSyncData(true);
super.name = qualifiedName;
this.localName = localName;
this.namespaceURI = namespaceURI;
}
//
// Node methods
//
//
//DOM2: Namespace methods.
//
/**
* Introduced in DOM Level 2. <p>
*
* The namespace URI of this node, or null if it is unspecified.<p>
*
* This is not a computed value that is the result of a namespace lookup based on
* an examination of the namespace declarations in scope. It is merely the
* namespace URI given at creation time.<p>
*
* For nodes created with a DOM Level 1 method, such as createElement
* from the Document interface, this is null.
* @since WD-DOM-Level-2-19990923
*/
public String getNamespaceURI()
{
if (needsSyncData()) {
synchronizeData();
}
return namespaceURI;
}
/**
* Introduced in DOM Level 2. <p>
*
* The namespace prefix of this node, or null if it is unspecified. <p>
*
* For nodes created with a DOM Level 1 method, such as createElement
* from the Document interface, this is null. <p>
*
* @since WD-DOM-Level-2-19990923
*/
public String getPrefix()
{
if (needsSyncData()) {
synchronizeData();
}
int index = name.indexOf(':');
return index < 0 ? null : name.substring(0, index);
}
/**
* Introduced in DOM Level 2. <p>
*
* Note that setting this attribute changes the nodeName attribute, which holds the
* qualified name, as well as the tagName and name attributes of the Element
* and Attr interfaces, when applicable.<p>
*
* @param prefix The namespace prefix of this node, or null(empty string) if it is unspecified.
*
* @exception INVALID_CHARACTER_ERR
* Raised if the specified
* prefix contains an invalid character.
* @exception DOMException
* @since WD-DOM-Level-2-19990923
*/
public void setPrefix(String prefix)
throws DOMException
{
if (needsSyncData()) {
synchronizeData();
}
if (ownerDocument().errorChecking) {
if (isReadOnly()) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NO_MODIFICATION_ALLOWED_ERR", null);
throw new DOMException(
DOMException.NO_MODIFICATION_ALLOWED_ERR,
msg);
}
if (prefix != null && prefix.length() != 0) {
if (!CoreDocumentImpl.isXMLName(prefix)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "INVALID_CHARACTER_ERR", null);
throw new DOMException(DOMException.INVALID_CHARACTER_ERR, msg);
}
if (namespaceURI == null || prefix.indexOf(':') >=0) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
} else if (prefix.equals("xml")) {
if (!namespaceURI.equals(xmlURI)) {
String msg = DOMMessageFormatter.formatMessage(DOMMessageFormatter.DOM_DOMAIN, "NAMESPACE_ERR", null);
throw new DOMException(DOMException.NAMESPACE_ERR, msg);
}
}
}
}
// update node name with new qualifiedName
if (prefix !=null && prefix.length() != 0) {
name = prefix + ":" + localName;
}
else {
name = localName;
}
}
/**
* Introduced in DOM Level 2. <p>
*
* Returns the local part of the qualified name of this node.
* @since WD-DOM-Level-2-19990923
*/
public String getLocalName()
{
if (needsSyncData()) {
synchronizeData();
}
return localName;
}
/**
* DOM Level 3 WD - Experimental.
* Retrieve baseURI
*/
public String getBaseURI() {
if (needsSyncData()) {
synchronizeData();
}
String baseURI = this.ownerNode.getBaseURI();
if (attributes != null) {
Attr attrNode = (Attr)attributes.getNamedItemNS("http://www.w3.org/XML/1998/namespace", "base");
if (attrNode != null) {
String uri = attrNode.getNodeValue();
if (uri.length() != 0 ) {// attribute value is always empty string
try {
uri = new URI(new URI(baseURI), uri).toString();
}
catch (org.apache.xerces.util.URI.MalformedURIException e){
// REVISIT: what should happen in this case?
return null;
}
return uri;
}
}
}
return baseURI;
}
}