Bug 183888 BIRT designer - Cube in data explorer
Current behavior - The data explorer view allows uer to change the order of a group level in a hierrachy. Expected behavior - user should not be allowed to change the order of the group level in data explorer view. - Instead user can user cube builder dialog to change the order.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
if ( !checkContainerExists( array[i], array ) )
				{
					list.add( cloneSource( array[i] ) );
				}
			}
			return list.toArray( );
		}
		if ( source instanceof StructuredSelection )
		{
			return cloneSource( ( (StructuredSelection) source ).toArray( ) );
		}
		if ( source instanceof ColumnHandle )
		{
			try
			{
				int columnNumber = HandleAdapterFactory.getInstance( )
						.getColumnHandleAdapter( source )
						.getColumnNumber( );
				Object parent = ( (ColumnHandle) source ).getContainer( );
				if ( parent instanceof TableHandle )
				{
					return ( (TableHandle) parent ).copyColumn( columnNumber );
				}
				else if ( parent instanceof GridHandle )
				{
					return ( (GridHandle) parent ).copyColumn( columnNumber );
				}
			}
			catch ( SemanticException e )