Bug 133780 Execution sequence of valueExpr(DataItem) and onCreate() is not correct.
In the attached design. There is a DataItem in the table footer that I used to do a sum of the "Amount" column. In the test, I write the onCreate() method as: params["amount"]=Total.sum(row["AMOUNT"]); It passes the aggregation value to a parameter. In the "valueExpr" I write as: "AMOUNT:" + params["amount"] The expression is expected to export the sum. Actual output is: AMOUNT:null Followings are the definitions from Rom Text Spec & Rom Scripting Spec, valueExpr usually should be evalated after the onCreate() method. DataItem.valueExpr: The expression is usually evaluated when the report is rendered, not in the Factory, though it may be evaluated in the Factory also. onCreate: Executed when the element is created in the Factory. Called after the item is created, but before the item is saved to the report document file.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/executor/ImageItemExecutor.java
ReportDesignHandle reportDesign = context.getDesign( );
		if ( reportDesign != null )
		{
			URL url = reportDesign.findResource( imageFile,
					IResourceLocator.IMAGE );
			if ( url != null )
			{
				String fileName = url.getFile( );
				if ( fileName != null )
				{
					imageFile = fileName;
				}
			}
		}
		
		
		
		imageContent.setURI( imageFile );
		imageContent.setImageSource( IImageContent.IMAGE_FILE );
		imageContent.setExtension( FileUtil.getExtFromFileName( imageFile,
				FileUtil.SEPARATOR_PATH ) );
		if ( imageFile == null )
		{
			logger.log( Level.SEVERE,
					"[ImageItemExecutor] Source image file is missing" ); 
			context.addException( new EngineException(
					MessageConstants.MISSING_IMAGE_FILE_ERROR ) );
		}
	}
}