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/Data.java
{
	private static final long serialVersionUID = -316995334044186083L;
	private static int ID = 0;
	public static final String DATE = "DATE";
	public static final String NUMBER = "NUMBER";
	public static final String STRING = "STRING";
	
    Object txt;
    int styleId, id;
    
    String datatype = Data.STRING;
    
	StyleEntry style;
	Span span;
	
	Rule rule;
	HyperlinkDef url;
	boolean isTxtData = true;
	public Data( final Object txt, final StyleEntry s )
	{
		this.txt = txt;		
		this.style = s;
		id = ID++;
	}
	protected void setNotTxtData( )
	{
		this.isTxtData = false;
	}
	public int hashCode( )
	{