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package com.sun.xml.ws.db.sdo;
import org.xml.sax.ContentHandler;
import org.xml.sax.Locator;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributesImpl;
import javax.xml.namespace.QName;
import javax.xml.stream.Location;
import javax.xml.stream.XMLStreamConstants;
import javax.xml.stream.XMLStreamException;
import javax.xml.stream.XMLStreamReader;
import java.util.Stack;
/**
* Created by IntelliJ IDEA.
* User: giglee
* Date: Jun 8, 2009
* Time: 2:44:22 PM
* To change this template use File | Settings | File Templates.
*/
public class Stax2SAXAdapter {
private XMLStreamReader staxReader;
private boolean readDocument = false; // the input is the entire document.
public Stax2SAXAdapter(XMLStreamReader stax, boolean readDocument) {
this.staxReader = stax;
this.readDocument = readDocument;
}
public void parse(ContentHandler handler) throws XMLStreamException, SAXException {
Stack<String> stack = new Stack<String>();
boolean done = false;
while (!done) {
int event = staxReader.getEventType();
switch (event) {
case XMLStreamConstants.START_DOCUMENT:
if (readDocument) {
processDocument(handler);
}
break;
case XMLStreamConstants.END_DOCUMENT:
if (readDocument) {
handler.endDocument();
}
done = true;
break;
case XMLStreamConstants.START_ELEMENT:
stack.push(staxReader.getLocalName());
processStartElement(handler);
break;
case XMLStreamConstants.END_ELEMENT:
processEndElement(handler);
stack.pop();
if (stack.isEmpty() && !readDocument) {
done = true;
}
break;
case XMLStreamConstants.CHARACTERS:
handler.characters(staxReader.getTextCharacters(), staxReader.getTextStart(), staxReader.getTextLength());
break;
case XMLStreamConstants.CDATA:
//TODO
break;
case XMLStreamConstants.ATTRIBUTE:
// already processed in element
break;
case XMLStreamConstants.SPACE:
break;
case XMLStreamConstants.COMMENT:
break;
case XMLStreamConstants.DTD:
break;
case XMLStreamConstants.ENTITY_DECLARATION:
break;
case XMLStreamConstants.ENTITY_REFERENCE:
break;
case XMLStreamConstants.NAMESPACE:
break;
case XMLStreamConstants.NOTATION_DECLARATION:
break;
case XMLStreamConstants.PROCESSING_INSTRUCTION:
handler.processingInstruction(staxReader.getPIData(), staxReader.getPITarget());
break;
default:
break;
}
staxReader.next();
}
staxReader.close();
}
private void processDocument(ContentHandler handler) throws SAXException {
Location loc = staxReader.getLocation();
handler.setDocumentLocator(new SAXLocator(loc.getPublicId(), loc.getSystemId(), loc.getLineNumber(), loc.getColumnNumber()));
handler.startDocument();
}
private void processStartElement(ContentHandler handler) throws SAXException {
int namespaceCount = staxReader.getNamespaceCount();
for (int i = 0; i < namespaceCount; i++) {
String p = staxReader.getNamespacePrefix(i);
if (p == null) {
p = "";
}
String u = staxReader.getNamespaceURI(i);
handler.startPrefixMapping(p, u);
}
QName qname = staxReader.getName();
String namespaceURI = qname.getNamespaceURI();
String prefix = qname.getPrefix();
String localName = qname.getLocalPart();
int attCount = staxReader.getAttributeCount();
AttributesImpl atts = new AttributesImpl();
for (int i = 0; i < attCount; i++) {
String p = staxReader.getAttributePrefix(i);
if (p == null) {
p = "";
}
String l = staxReader.getAttributeLocalName(i);
String u = staxReader.getAttributeNamespace(i);
String type = staxReader.getAttributeType(i);
String value = staxReader.getAttributeValue(i);
atts.addAttribute(u, l, getPrefixName(p, l), type, value);
}
handler.startElement(namespaceURI, localName, getPrefixName(prefix, localName), atts);
}
private void processEndElement(ContentHandler handler) throws SAXException {
QName qname = staxReader.getName();
String namespaceURI = qname.getNamespaceURI();
String prefix = qname.getPrefix();
String localName = qname.getLocalPart();
handler.endElement(namespaceURI, localName, getPrefixName(prefix, localName));
int namespaceCount = staxReader.getNamespaceCount();
for (int i = 0; i < namespaceCount; i++) {
String p = staxReader.getNamespacePrefix(i);
if (p == null) {
p = "";
}
handler.endPrefixMapping(p);
}
}
private String getPrefixName(String prefix, String local) {
if (prefix == null || prefix.length() == 0) {
return local;
} else {
return prefix + ":" + local;
}
}
private static class SAXLocator implements Locator {
private String publicId;
private String systemId;
private int lineNumber;
private int columnNumber;
public SAXLocator(String publicId, String systemId, int lineNumber, int columnNumber) {
this.publicId = publicId;
this.systemId = systemId;
this.lineNumber = lineNumber;
this.columnNumber = columnNumber;
}
public String getPublicId() {
return publicId;
}
public String getSystemId() {
return systemId;
}
public int getLineNumber() {
return lineNumber;
}
public int getColumnNumber() {
return columnNumber;
}
}
}