/* | |
* Copyright 2004,2005 The Apache Software Foundation. | |
* Copyright 2006 International Business Machines Corp. | |
* | |
* Licensed 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.axis2.jaxws.message.util.impl; | |
import java.util.ArrayList; | |
import java.util.Iterator; | |
import javax.xml.namespace.NamespaceContext; | |
import org.w3c.dom.Attr; | |
import org.w3c.dom.Element; | |
import org.w3c.dom.NamedNodeMap; | |
import org.w3c.dom.Node; | |
/** | |
* Namespace information available at the current scope. | |
* Utility class for XMLStreamReaderFromDOM | |
* @see org.apache.axis2.jaxws.message.util.impl.XMLStreamReaderFromDOM | |
*/ | |
public class NamespaceContextFromDOM implements NamespaceContext { | |
private Element element; | |
/** | |
* @param element representing the current scope | |
*/ | |
NamespaceContextFromDOM(Element element) { | |
this.element = element; | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.namespace.NamespaceContext#getPrefix(java.lang.String) | |
*/ | |
public String getPrefix(String namespaceURI) { | |
return element.lookupPrefix(namespaceURI); | |
} | |
/* (non-Javadoc) | |
* @see javax.xml.namespace.NamespaceContext#getPrefixes(java.lang.String) | |
*/ | |
public Iterator getPrefixes(String namespaceURI) { | |
if (element instanceof javax.xml.soap.SOAPElement) { | |
Iterator it = ((javax.xml.soap.SOAPElement)element).getVisibleNamespacePrefixes(); | |
ArrayList list = new ArrayList(); | |
while (it.hasNext()) { | |
String prefix = (String) it.next(); | |
if (getNamespaceURI(prefix).equals(namespaceURI)) { | |
if (prefix != null && prefix.length() == 0) { | |
prefix = null; | |
} | |
list.add(prefix); | |
} | |
} | |
return list.iterator(); | |
} else { | |
ArrayList list = new ArrayList(); | |
Node node = element; | |
while (node != null) { | |
if (node instanceof Element) { | |
// Walk the attributes looking for namespace declarations | |
NamedNodeMap attrs =((Element) node).getAttributes(); | |
for (int i=0; i<attrs.getLength(); i++) { | |
Attr attr = (Attr) attrs.item(i); | |
if (attr.getNodeValue().equals(namespaceURI)) { | |
String name = attr.getNodeName(); | |
if (name.startsWith("xmlns")) { | |
String prefix = ""; | |
if (name.startsWith("xmlns:")) { | |
prefix = name.substring(6); | |
} | |
// Found a namespace declaration with the prefix. | |
// Make sure this is not overridden by a declaration | |
// in a closer scope. | |
if (!list.contains(prefix) && | |
getNamespaceURI(prefix).equals(namespaceURI)) { | |
list.add(prefix); | |
} | |
} | |
} | |
} | |
} | |
// Pop up to the parent node | |
node = node.getParentNode(); | |
} | |
return list.iterator(); | |
} | |
} | |
public String getNamespaceURI(String prefix) { | |
return element.lookupNamespaceURI(prefix); | |
} | |
} |