Bug 119331 Library - name space terminology and behavior
During BIRT 2.0 library feature review meeting the following change was decided. - Change the term namespace to 'prefix' - By default use the library name as the prefix ( namespace ); the dialog to input prefix should be prompted only if hte auto generated prefix is not unique.
UI/org.eclipse.birt.report.designer.core/src/org/eclipse/birt/report/designer/util/DNDUtil.java
if ( container.equals( handles[i] ) )
						{
							return true;
						}
						container = container.getContainer( );
					}
				}
				else if ( handles[i] instanceof SlotHandle )
				{
					
					if ( child.getContainerSlotHandle( ) == handles[i] )
					{
						return true;
					}
				}
			}
		}
		return false;
	}
	/**
	 * Gets the position after the sibling in the container
	 * 
	 * @param targetObj
	 *            container or sibling
	 * @param canContain
	 *            <code>CONTAIN_PARENT</code> as sibling, others as container
	 * @return the position: after the sibling in the same container, or -1 as
	 *         the last position in the container
	 */
	public static int calculateNextPosition( Object targetObj, int canContain )