/*
* 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.axiom.om.impl.common;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
import javax.xml.XMLConstants;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMNamespace;
import org.apache.axiom.util.namespace.AbstractNamespaceContext;
class LiveNamespaceContext extends AbstractNamespaceContext {
private final OMElement element;
public LiveNamespaceContext(OMElement element) {
this.element = element;
}
protected String doGetNamespaceURI(String prefix) {
OMNamespace ns = element.findNamespaceURI(prefix);
return ns == null ? XMLConstants.NULL_NS_URI : ns.getNamespaceURI();
}
protected String doGetPrefix(String namespaceURI) {
OMNamespace ns = element.findNamespace(namespaceURI, null);
return ns == null ? null : ns.getPrefix();
}
protected Iterator doGetPrefixes(String namespaceURI) {
List prefixes = new ArrayList();
for (Iterator it = element.getNamespacesInScope(); it.hasNext(); ) {
OMNamespace ns = (OMNamespace)it.next();
if (ns.getNamespaceURI().equals(namespaceURI)) {
prefixes.add(ns.getPrefix());
}
}
return prefixes.iterator();
}
}