/**
* Copyright (c) 2005-2010, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
*
* WSO2 Inc. 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.synapse.commons.json;
import org.apache.synapse.commons.staxon.core.event.SimpleXMLEventWriter;
import javax.xml.namespace.QName;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamWriter;
import javax.xml.stream.events.Attribute;
import javax.xml.stream.events.Characters;
import javax.xml.stream.events.Comment;
import javax.xml.stream.events.DTD;
import javax.xml.stream.events.EntityReference;
import javax.xml.stream.events.Namespace;
import javax.xml.stream.events.ProcessingInstruction;
import javax.xml.stream.events.StartDocument;
import javax.xml.stream.events.StartElement;
import javax.xml.stream.events.XMLEvent;
import java.util.Iterator;
final class XMLEventWriterDelegate extends SimpleXMLEventWriter {
private XMLStreamWriter delegate;
public XMLEventWriterDelegate(XMLStreamWriter delegate) {
super(delegate);
this.delegate = delegate;
}
public void add(XMLEvent event) throws XMLStreamException {
switch (event.getEventType()) {
case XMLStreamConstants.ATTRIBUTE:
Attribute attribute = (Attribute) event;
QName attrName = attribute.getName();
delegate.writeAttribute(attrName.getPrefix(),
attrName.getNamespaceURI(),
attrName.getLocalPart(), attribute.getValue());
break;
case XMLStreamConstants.END_DOCUMENT:
delegate.writeEndDocument();
break;
case XMLStreamConstants.END_ELEMENT:
delegate.writeEndElement();
break;
case XMLStreamConstants.NAMESPACE:
Namespace namespace = (Namespace) event;
delegate.writeNamespace(namespace.getPrefix(), namespace.getNamespaceURI());
break;
case XMLStreamConstants.START_DOCUMENT:
StartDocument startDocument = (StartDocument) event;
if (startDocument.encodingSet()) { // encoding defined?
delegate.writeStartDocument(startDocument.getCharacterEncodingScheme(), startDocument.getVersion());
} else {
delegate.writeStartDocument(startDocument.getVersion());
}
break;
case XMLStreamConstants.START_ELEMENT:
StartElement startElement = event.asStartElement();
QName elemName = startElement.getName();
delegate.writeStartElement(elemName.getPrefix(), elemName.getLocalPart(), elemName.getNamespaceURI());
Iterator<?> namespaces = startElement.getNamespaces();
while (namespaces.hasNext()) {
add((Namespace) namespaces.next());
}
Iterator<?> attributes = startElement.getAttributes();
while (attributes.hasNext()) {
add((Attribute) attributes.next());
}
break;
case XMLStreamConstants.CHARACTERS:
case XMLStreamConstants.CDATA:
Characters characters = event.asCharacters();
if (characters.isCData()) {
delegate.writeCData(characters.getData());
} else {
delegate.writeCharacters(characters.getData());
}
break;
case XMLStreamConstants.COMMENT:
delegate.writeComment(((Comment) event).getText());
break;
case XMLStreamConstants.DTD:
delegate.writeDTD(((DTD) event).getDocumentTypeDeclaration());
break;
case XMLStreamConstants.ENTITY_REFERENCE:
delegate.writeEntityRef(((EntityReference) event).getName());
break;
case XMLStreamConstants.PROCESSING_INSTRUCTION:
ProcessingInstruction processingInstruction = (ProcessingInstruction) event;
delegate.writeProcessingInstruction(processingInstruction.getTarget(), processingInstruction.getData());
break;
case XMLStreamConstants.SPACE:
break;
default:
throw new XMLStreamException("Cannot write event " + event);
}
}
}