001/* 002 * Copyright 2014 the original author or authors. 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * https://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016 017package org.springframework.batch.item.xml.stax; 018 019import java.util.LinkedList; 020import java.util.List; 021 022import javax.xml.namespace.QName; 023import javax.xml.stream.XMLEventWriter; 024import javax.xml.stream.XMLStreamException; 025import javax.xml.stream.events.XMLEvent; 026 027/** 028 * Delegating XMLEventWriter, which collects the QNames of elements that were opened but not closed. 029 * 030 * @author Jimmy Praet 031 * @since 3.0 032 */ 033public class UnclosedElementCollectingEventWriter extends AbstractEventWriterWrapper { 034 035 private LinkedList<QName> unclosedElements = new LinkedList<QName>(); 036 037 public UnclosedElementCollectingEventWriter(XMLEventWriter wrappedEventWriter) { 038 super(wrappedEventWriter); 039 } 040 041 /* (non-Javadoc) 042 * @see org.springframework.batch.item.xml.stax.AbstractEventWriterWrapper#add(javax.xml.stream.events.XMLEvent) 043 */ 044 @Override 045 public void add(XMLEvent event) throws XMLStreamException { 046 if (event.isStartElement()) { 047 unclosedElements.addLast(event.asStartElement().getName()); 048 } else if (event.isEndElement()) { 049 unclosedElements.removeLast(); 050 } 051 super.add(event); 052 } 053 054 public List<QName> getUnclosedElements() { 055 return unclosedElements; 056 } 057}