Bug 205938 Cross Tab: 2.2.9 Measures from a cube can be dragged and dropped to left and not to right.
If user wants to show an existing measure on a cross tab that he has defined in a cube, he can only add it to the left and not to the right of an existing measure. Proposed solution User should be ale to add a measure both to the left and right of an existing measure.
UI/org.eclipse.birt.report.designer.ui/src/org/eclipse/birt/report/designer/internal/ui/editors/schematic/editpolicies/ReportFlowLayoutEditPolicy.java
* (non-Javadoc)
	 * 
	 * @see org.eclipse.gef.editpolicies.LayoutEditPolicy#getCloneCommand(org.eclipse.gef.requests.ChangeBoundsRequest)
	 */
	protected Command getCloneCommand( ChangeBoundsRequest request )
	{
		return getAddCommand( request );
	}
	/**
	 * @param parent
	 * @param child
	 * @param insertionReference
	 * @return command
	 */
	protected Command createAddCommand( EditPart parent, EditPart child,
			EditPart insertionReference )
	{
		Object parentModel = null;
		if ( parent.getModel( ) instanceof ListBandProxy )
		{
			parentModel = ( (ListBandProxy) parent.getModel( ) ).getSlotHandle( );
		}
		else
		{
			parentModel = parent.getModel( );
		}
		if (!(child.getModel( ) instanceof DesignElementHandle))
		{
			return UnexecutableCommand.INSTANCE;
		}