Bug 205782 Excel can't process big data which type is Decimal.
engine/org.eclipse.birt.report.engine.emitter.prototype.excel/src/org/eclipse/birt/report/engine/emitter/excel/Data.java
this.style = s;
		this.datatype = datatype;
		id = ID++;
		
	}
    
	protected void setNotTxtData( )
	{
		this.isTxtData = false;
	}
    
	public String getText()
    {
       if (txt == null) 
       {
          return " "; 
       }
       else if (datatype.equals( Data.DATE )) 
       { 
    	  return ExcelUtil.formatDate( txt );
       }
       else
       {
    	   return txt.toString( );
       }
    }
	
	public int hashCode( )
	{
		return id;