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/ExcelWriter.java
writer.attribute( "ss:Type", "String" );
			}
			writer.text( ( (Data) d ).txt.toString( ) );
		}
		else
		{
			writer.attribute( "ss:Type", "String" );
			writer.text( d.toString( ) );
		}
		writer.closeTag( "Data" );
	}
	public void startRow( )
	{
		writer.openTag( "Row" );
	}
	public void endRow( )
	{
		writer.closeTag( "Row" );
	}
	public void startCell( int cellindex, int colspan, int rowspan, int styleid,
			HyperlinkDef hyperLink )
	{
		writer.openTag( "Cell" );
		writer.attribute( "ss:Index", cellindex );
		writer.attribute( "ss:StyleID", styleid );
		
		if ( hyperLink != null )
		{
			if(hyperLink.getType( ) == IHyperlinkAction.ACTION_BOOKMARK) {