uk.ac.bbk.dcs.automed.qproc.functions.xml
Class NewElemUID

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.functions.xml.NewElemUID

All Implemented Interfaces:

BuiltInFunction

public class NewElemUID
extends java.lang.Object
implements BuiltInFunction

Function that produces element UIDs based on the two arguments passed to the function. The first argument is an integer; the function will create as many element UIDs as the integer. The second argument is an element scheme, which will serve as the prototype for the element UIDs.

Author:

Lucas Zamboulis

Constructor Summary

NewElemUID()

Method Summary

int	getArity() Returns the arity of the function.
Cell	perform(Cell[] args, Evaluator e) Returns a Cell object that is the root of a graph that represents the result of applying the built-in function to the arguments args.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

NewElemUID

public NewElemUID()

Method Detail

getArity

public int getArity()

Description copied from interface: BuiltInFunction

Returns the arity of the function.

Specified by:

getArity in interface BuiltInFunction

perform

public Cell perform(Cell[] args,
                    Evaluator e)

Description copied from interface: BuiltInFunction

Returns a Cell object that is the root of a graph that represents the result of applying the built-in function to the arguments args. Uses the Evaluator e to evaluate any sub-queries that need to be evaluated.

Specified by:

perform in interface BuiltInFunction