uk.ac.bbk.dcs.automed.qproc.functions
Class SortDistinct

java.lang.Object
  |
  +--uk.ac.bbk.dcs.automed.qproc.functions.SortDistinct

All Implemented Interfaces:

BuiltInFunction

Direct Known Subclasses:

SetUnion

public class SortDistinct

extends java.lang.Object

implements BuiltInFunction

Constructor Summary

SortDistinct()

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.
protected ModifiedArray	removeDuplicates(ModifiedArray list)

Methods inherited from class java.lang.Object

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

Constructor Detail

SortDistinct

public SortDistinct()

Method Detail

getArity

public int getArity()

Description copied from interface: BuiltInFunction

Returns the arity of the function.

Specified by:

getArity in interface BuiltInFunction

removeDuplicates

protected ModifiedArray removeDuplicates(ModifiedArray list)

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