/*
* Copyright 2004,2005 The Apache Software Foundation.
*
* 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.apache.axiom.om.impl.builder;
import org.apache.axiom.om.OMAbstractFactory;
import org.apache.axiom.om.OMContainer;
import org.apache.axiom.om.OMElement;
import org.apache.axiom.om.OMException;
import org.apache.axiom.om.OMFactory;
import org.apache.axiom.om.OMNode;
import org.apache.axiom.om.impl.OMNodeEx;
import org.xml.sax.Attributes;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.DefaultHandler;
import java.util.ArrayList;
import java.util.List;
public class SAXOMBuilder extends DefaultHandler {
OMElement root = null;
OMNode lastNode = null;
OMElement nextElem = null;
OMFactory factory = OMAbstractFactory.getOMFactory();
List prefixMappings = new ArrayList();
public void setDocumentLocator(Locator arg0) {
}
public void startDocument() throws SAXException {
}
public void endDocument() throws SAXException {
}
protected OMElement createNextElement(String localName) throws OMException {
OMElement e;
if (lastNode == null) {
root = e = factory.createOMElement(localName, null, null, null);
} else if (lastNode.isComplete()) {
e = factory.createOMElement(localName, null, lastNode.getParent(),
null);
((OMNodeEx)lastNode).setNextOMSibling(e);
((OMNodeEx)e).setPreviousOMSibling(lastNode);
} else {
OMElement parent = (OMElement) lastNode;
e = factory.createOMElement(localName, null, (OMElement) lastNode,
null);
parent.setFirstChild(e);
}
return e;
}
/*
* (non-Javadoc)
*
* @see org.xml.sax.ContentHandler#startPrefixMapping(java.lang.String,
* java.lang.String)
*/
public void startPrefixMapping(String prefix, String uri)
throws SAXException {
if (nextElem == null)
nextElem = createNextElement(null);
nextElem.declareNamespace(uri, prefix);
}
public void endPrefixMapping(String arg0) throws SAXException {
}
/*
* (non-Javadoc)
*
* @see org.xml.sax.ContentHandler#startElement(java.lang.String,
* java.lang.String, java.lang.String, org.xml.sax.Attributes)
*/
public void startElement(String namespaceURI, String localName,
String qName, Attributes atts) throws SAXException {
if (localName == null || localName.trim().equals(""))
localName = qName.substring(qName.indexOf(':') + 1);
if (nextElem == null)
nextElem = createNextElement(localName);
else
nextElem.setLocalName(localName);
nextElem
.setNamespace(nextElem.findNamespace(namespaceURI, null));
int j = atts.getLength();
for (int i = 0; i < j; i++)
nextElem.addAttribute(atts.getLocalName(i), atts.getValue(i),
nextElem.findNamespace(atts.getURI(i), null));
lastNode = nextElem;
nextElem = null;
}
/*
* (non-Javadoc)
*
* @see org.xml.sax.ContentHandler#endElement(java.lang.String,
* java.lang.String, java.lang.String)
*/
public void endElement(String arg0, String arg1, String arg2)
throws SAXException {
if (lastNode.isComplete()) {
OMContainer parent = lastNode.getParent();
((OMNodeEx)parent).setComplete(true);
lastNode = (OMNode) parent;
} else {
OMElement e = (OMElement) lastNode;
((OMNodeEx)e).setComplete(true);
}
}
/*
* (non-Javadoc)
*
* @see org.xml.sax.ContentHandler#characters(char[], int, int)
*/
public void characters(char[] ch, int start, int length)
throws SAXException {
if (lastNode == null) {
throw new SAXException("");
}
OMNode node;
if (lastNode.isComplete()) {
node =
factory.createOMText((OMElement) lastNode.getParent(),
new String(ch,
start, length));
((OMNodeEx)lastNode).setNextOMSibling(node);
((OMNodeEx)node).setPreviousOMSibling(lastNode);
} else {
OMElement e = (OMElement) lastNode;
node = factory.createOMText(e, new String(ch, start, length));
e.setFirstChild(node);
}
lastNode = node;
}
public void ignorableWhitespace(char[] arg0, int arg1, int arg2)
throws SAXException {
}
public void processingInstruction(String arg0, String arg1)
throws SAXException {
}
public void skippedEntity(String arg0) throws SAXException {
}
/**
* @return Returns the root.
*/
public OMElement getRootElement() {
return root;
}
}