Bug 135497 Data Type is not correct when "Generate All" for Data item
Description: Create a sample datasource and dataset. Insert a data into layout, bind with the dataset.Click "Generate All" to get the Data Binding columns, but the displayed data type is not consistent with the actual one.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/tools/ReportCreationTool.java
boolean validateTrue = false;
		if (isCreating)
		{
			return true;
		}
		updateTargetUnderMouse( );
		
		if (getTargetEditPart().getModel() instanceof LibraryHandle)
		{
			
		}
		
		if ( getTargetEditPart( ) != null )
		{
			validateTrue = handleValidatePalette( getFactory( ).getObjectType( ),
					getTargetEditPart( ) );
		}
		if ( validateTrue )
		{
			updateTargetRequest( );
			setCurrentCommand( getCommand( ) );
			showTargetFeedback( );
		}
		else
		{
			setCurrentCommand( null );
		}
		return validateTrue;
	}
}