org.apache.cxf.staxutils.PartialXMLStreamReader Maven / Gradle / Ivy
/**
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you 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.apache.cxf.staxutils;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
/**
* Read from a StaX reader, stopping when the next element is a specified element.
* For example, this can be used to read all of the Header of a soap message into a DOM
* document stopping on contact with the body element.
*/
public class PartialXMLStreamReader extends DepthXMLStreamReader {
private QName endTag;
private boolean foundEnd;
private int endDepth;
private int currentEvent;
public PartialXMLStreamReader(XMLStreamReader r, QName endTag) {
super(r);
this.endTag = endTag;
currentEvent = r.getEventType();
}
@Override
public int next() throws XMLStreamException {
if (!foundEnd) {
currentEvent = super.next();
if (currentEvent == START_ELEMENT && getName().equals(endTag)) {
foundEnd = true;
endDepth = getDepth();
return START_ELEMENT;
}
return currentEvent;
} else if (endDepth > 0) {
endDepth--;
currentEvent = END_ELEMENT;
} else {
currentEvent = END_DOCUMENT;
}
return currentEvent;
}
@Override
public int getEventType() {
return currentEvent;
}
@Override
public boolean hasNext() {
return currentEvent != END_DOCUMENT;
}
}