Bug 189586 [smoke]Fail to preview template item in xls format..[1203]
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/ExcelEmitter.java
Object o = formulaDatas.get( d );
					if ( o != null )
					{
						Data x = (Data) o;
						d.isTxtData = x.isTxtData;
						d.txt = x.txt;
					}
					if ( d.isTxtData )
					{
						writer.writeTxtData( d );
					}
					else
					{
						writer.writeFormulaData( d );
					}
					i += d.span.getColSpan( );
				}
				writer.endRow( );
			}
			lb.close( );
		}
		catch ( Exception e )
		{
			logger.log( Level.WARNING, e.getMessage( ), e );
			throw new RuntimeException( "fail to read temp file" );
		}
	}
}