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
.getColumnHandleAdapter( obj );
					columnNumber = columnAdapter.getColumnNumber( );
					parent = getTableParent( (DesignElementHandle) obj );
				}
				else if ( obj instanceof CellHandle )
				{
					CellHandleAdapter cellAdapter = HandleAdapterFactory.getInstance( )
							.getCellHandleAdapter( obj );
					columnNumber = cellAdapter.getColumnNumber( );
					parent = getTableParent( (DesignElementHandle) obj );
				}
			}
		}
		ColumnPosition position = null;
		for ( int i = 0; i < objs.length; i++ )
		{
			ColumnPosition newPosi = new ColumnPosition( objs[i] );
			if ( position == null )
			{
				position = newPosi;
			}
			else if ( position.columnNumber != newPosi.columnNumber
					|| position.parent != newPosi.parent )
			{
				return false;
			}
		}
		return true;
	}
}