uk.ac.bbk.dcs.automed.qproc.functions.string
Class LowerCase

java.lang.Object
  uk.ac.bbk.dcs.automed.qproc.functions.string.LowerCase

All Implemented Interfaces:

BuiltInFunction

public class LowerCase
extends java.lang.Object
implements BuiltInFunction

Turns the input string into lowercase.

Author:

Lucas Zamboulis

Constructor Summary

LowerCase()

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

LowerCase

public LowerCase()

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