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
.getName( ),
								childHandle ) ? CONTAIN_PARENT : CONTAIN_NO;
			}
		}
		return CONTAIN_NO;
	}
	/**
	 * Validates target can contain more elements
	 * 
	 * @param targetObj
	 *            target
	 * @param length
	 *            the length of elements in source.If do not add to target, set
	 *            zero
	 * @return whether target can contain more elements
	 */
	public static boolean handleValidateTargetCanContainMore( Object targetObj,
			int length )
	{
		if ( targetObj == null || length < 0 )
		{
			return false;
		}
		if ( targetObj instanceof StructuredSelection )
		{
			return handleValidateTargetCanContainMore( ( (StructuredSelection) targetObj ).toArray( ),
					length );
		}
		if ( targetObj instanceof Object[] )
		{