package org.apache.axis2.databinding.utils.reader; | |
import org.apache.axis2.util.ArrayStack; | |
import javax.xml.namespace.NamespaceContext; | |
import java.util.Iterator; | |
import java.util.ArrayList; | |
/* | |
* Copyright 2004,2005 The Apache Software Foundation. | |
* | |
* 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. | |
*/ | |
public class ADBNamespaceContext implements NamespaceContext { | |
private NamespaceContext parentNsContext; | |
public NamespaceContext getParentNsContext() { | |
return parentNsContext; | |
} | |
public void setParentNsContext(NamespaceContext parentNsContext) { | |
this.parentNsContext = parentNsContext; | |
} | |
//Keep two arraylists for the prefixes and namespaces. They should be in sync | |
//since the index of the entry will be used to relate them | |
//use the minimum initial capacity to let things handle memory better | |
private ArrayStack prefixStack = new ArrayStack(); | |
private ArrayStack uriStack = new ArrayStack(); | |
/** | |
* Register a namespace in this context | |
* @param prefix | |
* @param uri | |
*/ | |
public void pushNamespace(String prefix,String uri){ | |
prefixStack.push(prefix); | |
uriStack.push(uri); | |
} | |
/** | |
* Pop a namespace | |
*/ | |
public void popNamespace(){ | |
prefixStack.pop(); | |
uriStack.pop(); | |
} | |
public String getNamespaceURI(String prefix) { | |
//do the corrections as per the javadoc | |
if (prefixStack.contains(prefix)){ | |
int index = prefixStack.indexOf(prefix); | |
return (String)uriStack.get(index); | |
} | |
if (parentNsContext!=null){ | |
return parentNsContext.getPrefix(prefix); | |
} | |
return null; | |
} | |
public String getPrefix(String uri) { | |
//do the corrections as per the javadoc | |
int index = uriStack.indexOf(uri); | |
if (index != -1){ | |
return (String)prefixStack.get(index); | |
} | |
if (parentNsContext!=null){ | |
return parentNsContext.getPrefix(uri); | |
} | |
return null; | |
} | |
public Iterator getPrefixes(String uri) { | |
//create an arraylist that contains the relevant prefixes | |
String[] uris = (String[])uriStack.toArray(new String[uriStack.size()]); | |
ArrayList tempList = new ArrayList(); | |
for (int i = 0; i < uris.length; i++) { | |
if (uris[i].equals(uri)){ | |
tempList.add(prefixStack.get(i)); | |
//we assume that array conversion preserves the order | |
} | |
} | |
//by now all the relevant prefixes are collected | |
//make a new iterator and provide a wrapper iterator to | |
//obey the contract on the API | |
return new WrappingIterator(tempList.iterator()); | |
} | |
private class WrappingIterator implements Iterator{ | |
private Iterator containedIterator = null; | |
public WrappingIterator(Iterator containedIterator) { | |
this.containedIterator = containedIterator; | |
} | |
public Iterator getContainedIterator() { | |
return containedIterator; | |
} | |
public void setContainedIterator(Iterator containedIterator) { | |
this.containedIterator = containedIterator; | |
} | |
/** | |
* As per the contract on the API of Namespace context | |
* the returned iterator should be immutable | |
*/ | |
public void remove() { | |
throw new UnsupportedOperationException(); | |
} | |
public boolean hasNext() { | |
return containedIterator.hasNext(); | |
} | |
public Object next() { | |
return containedIterator.next(); | |
} | |
} | |
} |