Bug 208190 [Regression]A blank column occurs when export report to excel file[1203]
Description: Export report to excel file, a blank column is created on the front of the columns exported. Build version:2.3.0.v20071031-0800 Steps to reproduce: 1.Create a sample datasource and dataset. 2.Pull the dataset to the report layout,and add a group on the table. 3.Preview in web viewer, export the report to excel file, a blank column is created as the first column.
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/layout/ExcelLayoutEngine.java
HyperlinkDef def = d.getHyperlinkDef( );
			if ( def != null
					&& def.getType( ) == IHyperlinkAction.ACTION_BOOKMARK )
			{
				def.setUrl( (String) links.get( def.getUrl( ) ) );
			}
			
			d.setProcessed( true );
			data.add( row[i] );
		}		
		
		return (Data[]) data.toArray( new Data[0] );
	}
	private void addDatatoCache( int col, Object value )
	{
		cache.addData( col - detal, value );
	}
	
	
	
	
	
	
	public void complete( )
	{
		int rowcount = cache.getRowCount( );
		for ( int i = 0; i < rowcount; i++ )
		{
			Object[] row = cache.getRowData( i );
			for ( int j = 0; j < row.length; j++ )