Bug 200751 NPE in Excel emitter
writer.text( ( (Data) d ).txt.toString( ) ); SEVERE: An error happened while running the report. Cause: java.lang.NullPointerException at org.eclipse.birt.report.engine.emitter.excel.ExcelWriter.writeText(Ex celWriter.java:102) at org.eclipse.birt.report.engine.emitter.excel.ExcelWriter.writeTxtData (ExcelWriter.java:152) at org.eclipse.birt.report.engine.emitter.excel.ExcelEmitter.outputData( ExcelEmitter.java:311) at org.eclipse.birt.report.engine.emitter.excel.ExcelEmitter.end(ExcelEm itter.java:286) at org.eclipse.birt.report.engine.api.impl.RenderTask$PageRangeRender.re nder(RenderTask.java:593) at org.eclipse.birt.report.engine.api.impl.RenderTask.render(RenderTask. java:260)
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/StyleEngine.java
{
	private int styleID = 0;	
	private Hashtable style2id = new Hashtable( );
	private ExcelLayoutEngine engine;
	/**
	 * 
	 * @param dataMap
	 *            layout data
	 * @return a StyleEngine instance
	 */
	public StyleEngine( ExcelLayoutEngine engine )
	{
		this.engine = engine;
	}
	
	public StyleEntry createEntry(Rule rule, IStyle style)
	{
		if(style ==  null)
		{
			return StyleBuilder.createEmptyStyleEntry( );
		}	
		
		StyleEntry entry = initStyle( style, rule );
		entry.setStart( true );