org.springframework.batch.item.xml.stax.UnclosedElementCollectingEventWriter.java Source code

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Here is the source code for org.springframework.batch.item.xml.stax.UnclosedElementCollectingEventWriter.java

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/*
 * 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
 *
 *      https://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<>();

    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;
    }
}