org.deri.iris.builtins.string
Class StringSubstringUntilEndBuiltin

java.lang.Object
  org.deri.iris.builtins.AbstractBuiltin
      org.deri.iris.builtins.FunctionalBuiltin
          org.deri.iris.builtins.string.StringSubstringUntilEndBuiltin

All Implemented Interfaces:

Comparable<IAtom>, IAtom, IBuiltinAtom

public class StringSubstringUntilEndBuiltin
extends FunctionalBuiltin

Represents a string substring operation, but restricts the endIndex to string.length - 1.

Author:

gigi, Adrian Marte

Field Summary

Fields inherited from class org.deri.iris.builtins.AbstractBuiltin

EMPTY_TERM

Constructor Summary

StringSubstringUntilEndBuiltin(ITerm... terms)
Constructor.

Method Summary

protected ITerm

computeResult(ITerm[] terms) Computes the result when all terms but the term at the last position are known.

Methods inherited from class org.deri.iris.builtins.FunctionalBuiltin

evaluateTerms, maxUnknownVariables, testForEquality

Methods inherited from class org.deri.iris.builtins.AbstractBuiltin

compareTo, equals, evaluate, getPredicate, getTuple, hashCode, isBuiltin, isGround, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

StringSubstringUntilEndBuiltin

public StringSubstringUntilEndBuiltin(ITerm... terms)

Constructor.

Parameters:

terms - The terms, where the first term is the string, the second term is the begin index and the third term represents the result.

Throws:

IllegalArgumentException - if one of the terms is null

Method Detail

computeResult

protected ITerm computeResult(ITerm[] terms)
                       throws EvaluationException

Description copied from class: FunctionalBuiltin

Computes the result when all terms but the term at the last position are known.

Specified by:

computeResult in class FunctionalBuiltin

Parameters:

terms - The terms, where the terms at the last position is a variable representing the result.

Returns:

The computed term, or null if the operation is unsuccessful.

Throws:

EvaluationException - If an error occurs.