/*
* Copyright 2014 the original author or authors.
*
* 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.springframework.batch.item.xml.stax;
import java.util.LinkedList;
import java.util.List;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLEventWriter;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.events.XMLEvent;
/**
* Delegating XMLEventWriter, which collects the QNames of elements that were opened but not closed.
*
* @author Jimmy Praet
* @since 3.0
*/
public class UnclosedElementCollectingEventWriter extends AbstractEventWriterWrapper {
private LinkedList<QName> unclosedElements = new LinkedList<QName>();
public UnclosedElementCollectingEventWriter(XMLEventWriter wrappedEventWriter) {
super(wrappedEventWriter);
}
/* (non-Javadoc)
* @see org.springframework.batch.item.xml.stax.AbstractEventWriterWrapper#add(javax.xml.stream.events.XMLEvent)
*/
@Override
public void add(XMLEvent event) throws XMLStreamException {
if (event.isStartElement()) {
unclosedElements.addLast(event.asStartElement().getName());
} else if (event.isEndElement()) {
unclosedElements.removeLast();
}
super.add(event);
}
public List<QName> getUnclosedElements() {
return unclosedElements;
}
}