XMLWriter.java

package com.sun.msv.writer;

import org.xml.sax.DocumentHandler;
import org.xml.sax.SAXException;
import org.xml.sax.helpers.AttributeListImpl;
import org.xml.sax.helpers.LocatorImpl;

/**
 * Helper class that wraps {@link DocumentHandler} and provides utility methods.
 * 
 * <p>
 * Note that this class uses DocumentHandler, not ContentHandler.
 * This generally allows the caller better control.
 * 
 * <p>
 * This class throws {@link SAXRuntimeException}, instead of SAXException.
 */
public class XMLWriter
{
	protected DocumentHandler handler;
	/** this DocumentHandler will receive XML. */
	public void setDocumentHandler( DocumentHandler handler ) {
		this.handler = handler;
	}
	public DocumentHandler getDocumentHandler() { return handler; }
	
	public void element( String name ) {
		element( name, new String[0] );
	}
	public void element( String name, String[] attributes ) {
		start(name,attributes);
		end(name);
	}
	public void start( String name ) {
		start(name, new String[0] );
	}
	public void start( String name, String[] attributes ) {
		
		// create attributes.
		AttributeListImpl as = new AttributeListImpl();
		for( int i=0; i<attributes.length; i+=2 )
			as.addAttribute( attributes[i], "", attributes[i+1] );
		
		try {
			handler.startElement( name, as );
		} catch( SAXException e ) {
			throw new SAXRuntimeException(e);
		}
	}
	public void end( String name ) {
		try {
			handler.endElement( name );
		} catch( SAXException e ) {
			throw new SAXRuntimeException(e);
		}
	}
	
	public void characters( String str ) {
		try {
			handler.characters( str.toCharArray(), 0, str.length() );
		} catch( SAXException e ) {
			throw new SAXRuntimeException(e);
		}
	}
}