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/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.xerces.dom;
import org.apache.xerces.impl.dv.xs.XSSimpleTypeDecl;
import org.apache.xerces.xni.NamespaceContext;
import org.w3c.dom.DOMException;
/**
* AttrNSImpl inherits from AttrImpl and adds namespace support.
*
* 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.
*
* @xerces.internal
*
* @author Arnaud Le Hors, IBM
* @author Andy Clark, IBM
* @author Ralf Pfeiffer, IBM
* @version $Id: AttrNSImpl.java 924245 2010-03-17 11:58:14Z mrglavas $
*/
public class AttrNSImpl
extends AttrImpl {
//
// Constants
//
/** Serialization version. */
static final long serialVersionUID = -781906615369795414L;
static final String xmlnsURI = "http://www.w3.org/2000/xmlns/";
static final String xmlURI = "http://www.w3.org/XML/1998/namespace";
//
// Data
//
/** DOM2: Namespace URI. */
protected String namespaceURI;
/** DOM2: localName. */
protected String localName;
/*
* Default constructor
*/
public AttrNSImpl(){}
/**
* DOM2: Constructor for Namespace implementation.
*/
protected AttrNSImpl(CoreDocumentImpl ownerDocument,
String namespaceURI,
String qualifiedName) {
super(ownerDocument, qualifiedName);
setName(namespaceURI, qualifiedName);
}
private void setName(String namespaceURI, String qname){
CoreDocumentImpl ownerDocument = ownerDocument();
String prefix;
// DOM Level 3: namespace URI is never empty string.
this.namespaceURI = namespaceURI;
if (namespaceURI !=null) {
this.namespaceURI = (namespaceURI.length() == 0)? null
: namespaceURI;
}
int colon1 = qname.indexOf(':');
int colon2 = qname.lastIndexOf(':');
ownerDocument.checkNamespaceWF(qname, colon1, colon2);
if (colon1 < 0) {
// there is no prefix
localName = qname;
if (ownerDocument.errorChecking) {
ownerDocument.checkQName(null, localName);
if (qname.equals("xmlns") && (namespaceURI == null
|| !namespaceURI.equals(NamespaceContext.XMLNS_URI))
|| (namespaceURI!=null && namespaceURI.equals(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
public AttrNSImpl(CoreDocumentImpl ownerDocument,
String namespaceURI,
String qualifiedName,
String localName) {
super(ownerDocument, qualifiedName);
this.localName = localName;
this.namespaceURI = namespaceURI;
}
// for DeferredAttrImpl
protected AttrNSImpl(CoreDocumentImpl ownerDocument,
String value) {
super(ownerDocument, value);
}
// Support for DOM Level 3 renameNode method.
// Note: This only deals with part of the pb. It is expected to be
// called after the Attr has been detached for one thing.
// CoreDocumentImpl does all the work.
void rename(String namespaceURI, String qualifiedName) {
if (needsSyncData()) {
synchronizeData();
}
this.name = qualifiedName;
setName(namespaceURI, qualifiedName);
}
//
// DOM2: Namespace methods
//
/**
* Introduced in DOM Level 2.
*
* The namespace URI of this node, or null if it is unspecified.
*
* 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.
*
* 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();
}
// REVIST: This code could/should be done at a lower-level, such that
// the namespaceURI is set properly upon creation. However, there still
// seems to be some DOM spec interpretation grey-area.
return namespaceURI;
}
/**
* Introduced in DOM Level 2.
*
* The namespace prefix of this node, or null if it is unspecified.
*
* 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 getPrefix()
{
if (needsSyncData()) {
synchronizeData();
}
int index = name.indexOf(':');
return index < 0 ? null : name.substring(0, index);
}
/**
* Introduced in DOM Level 2.
*
* 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.
*
* @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,ownerDocument().isXML11Version())) {
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);
}
if (prefix.equals("xmlns")) {
if (!namespaceURI.equals(xmlnsURI)){
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);
}
}else if (name.equals("xmlns")) {
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.
*
* 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;
}
/**
* @see org.w3c.dom.TypeInfo#getTypeName()
*/
public String getTypeName() {
if (type !=null){
if (type instanceof XSSimpleTypeDecl){
return ((XSSimpleTypeDecl)type).getName();
}
return (String)type;
}
return null;
}
/**
* Introduced in DOM Level 3.
* Checks if a type is derived from another by restriction. See:
* http://www.w3.org/TR/DOM-Level-3-Core/core.html#TypeInfo-isDerivedFrom
*
* @param typeNamespaceArg
* The namspace of the ancestor type declaration
* @param typeNameArg
* The name of the ancestor type declaration
* @param derivationMethod
* The derivation method
*
* @return boolean True if the type is derived by restriciton for the
* reference type
*/
public boolean isDerivedFrom(String typeNamespaceArg,
String typeNameArg,
int derivationMethod) {
if (type != null) {
if (type instanceof XSSimpleTypeDecl) {
return ((XSSimpleTypeDecl) type).isDOMDerivedFrom(
typeNamespaceArg, typeNameArg, derivationMethod);
}
}
return false;
}
/**
* @see org.w3c.dom.TypeInfo#getTypeNamespace()
*/
public String getTypeNamespace() {
if (type !=null) {
if (type instanceof XSSimpleTypeDecl){
return ((XSSimpleTypeDecl)type).getNamespace();
}
return DTD_URI;
}
return null;
}
}