/*
* Copyright 2002-2010 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.util.xml;
import java.util.Iterator;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.springframework.util.Assert;
import org.springframework.util.StringUtils;
/**
* SAX <code>ContentHandler</code> that writes to a <code>XMLStreamWriter</code>.
*
* @author Arjen Poutsma
* @see XMLStreamWriter
* @since 3.0
*/
class StaxStreamContentHandler extends AbstractStaxContentHandler {
private final XMLStreamWriter streamWriter;
/**
* Constructs a new instance of the <code>StaxStreamContentHandler</code> that writes to the given
* <code>XMLStreamWriter</code>.
*
* @param streamWriter the stream writer to write to
*/
StaxStreamContentHandler(XMLStreamWriter streamWriter) {
Assert.notNull(streamWriter, "'streamWriter' must not be null");
this.streamWriter = streamWriter;
}
public void setDocumentLocator(Locator locator) {
}
@Override
protected void charactersInternal(char[] ch, int start, int length) throws XMLStreamException {
streamWriter.writeCharacters(ch, start, length);
}
@Override
protected void endDocumentInternal() throws XMLStreamException {
streamWriter.writeEndDocument();
}
@Override
protected void endElementInternal(QName name, SimpleNamespaceContext namespaceContext) throws XMLStreamException {
streamWriter.writeEndElement();
}
@Override
protected void ignorableWhitespaceInternal(char[] ch, int start, int length) throws XMLStreamException {
streamWriter.writeCharacters(ch, start, length);
}
@Override
protected void processingInstructionInternal(String target, String data) throws XMLStreamException {
streamWriter.writeProcessingInstruction(target, data);
}
@Override
protected void skippedEntityInternal(String name) {
}
@Override
protected void startDocumentInternal() throws XMLStreamException {
streamWriter.writeStartDocument();
}
@Override
protected void startElementInternal(QName name, Attributes attributes, SimpleNamespaceContext namespaceContext)
throws XMLStreamException {
streamWriter.writeStartElement(name.getPrefix(), name.getLocalPart(), name.getNamespaceURI());
if (namespaceContext != null) {
String defaultNamespaceUri = namespaceContext.getNamespaceURI("");
if (StringUtils.hasLength(defaultNamespaceUri)) {
streamWriter.writeNamespace("", defaultNamespaceUri);
streamWriter.setDefaultNamespace(defaultNamespaceUri);
}
for (Iterator<String> iterator = namespaceContext.getBoundPrefixes(); iterator.hasNext();) {
String prefix = iterator.next();
streamWriter.writeNamespace(prefix, namespaceContext.getNamespaceURI(prefix));
streamWriter.setPrefix(prefix, namespaceContext.getNamespaceURI(prefix));
}
}
for (int i = 0; i < attributes.getLength(); i++) {
QName attrName = toQName(attributes.getURI(i), attributes.getQName(i));
if (!("xmlns".equals(attrName.getLocalPart()) || "xmlns".equals(attrName.getPrefix()))) {
streamWriter.writeAttribute(attrName.getPrefix(), attrName.getNamespaceURI(), attrName.getLocalPart(),
attributes.getValue(i));
}
}
}
}
|