/*
* ModeShape (http://www.modeshape.org)
*
* 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.modeshape.common.xml;
import java.util.HashMap;
import java.util.Iterator;
import java.util.Map;
import javax.xml.namespace.NamespaceContext;
/**
* A simple {@link NamespaceContext} implementation that maintains the namespace and prefix mappings discovered within an XML
* document.
*/
public class SimpleNamespaceContext implements NamespaceContext {
private final Map<String, String> prefixToNamespace = new HashMap<String, String>();
@Override
public String getNamespaceURI( String prefix ) {
return this.prefixToNamespace.get(prefix);
}
@Override
public String getPrefix( String namespaceURI ) {
for (Map.Entry<String, String> entry : this.prefixToNamespace.entrySet()) {
if (entry.getValue().equals(namespaceURI)) return entry.getKey();
}
return null;
}
public SimpleNamespaceContext setNamespace( String prefix,
String namespaceUri ) {
this.prefixToNamespace.put(prefix, namespaceUri);
return this;
}
@Override
public Iterator<String> getPrefixes( String namespaceURI ) {
return this.prefixToNamespace.keySet().iterator();
}
}