ubc.cs.JLog.Terms
Class jClause

java.lang.Object
  ubc.cs.JLog.Foundation.jType
      ubc.cs.JLog.Terms.jTerm
          ubc.cs.JLog.Terms.iPredicate
              ubc.cs.JLog.Terms.jBuiltinPredicate
                  ubc.cs.JLog.Terms.jBinaryBuiltinPredicate
                      ubc.cs.JLog.Terms.jClause

All Implemented Interfaces:

iType, iUnifiable, iConsultable, iName, iNameArity, iTerm, iValue

public class jClause
extends jBinaryBuiltinPredicate

Field Summary

Fields inherited from class ubc.cs.JLog.Terms.jBinaryBuiltinPredicate

lhs, rhs

Fields inherited from class ubc.cs.JLog.Foundation.jType

type

Fields inherited from interface ubc.cs.JLog.Terms.iTerm

EQUAL, GREATER_THAN, LESS_THAN

Fields inherited from interface ubc.cs.JLog.Foundation.iType

TYPE_ARITHMETIC, TYPE_ATOM, TYPE_BUILTINPREDICATE, TYPE_COMMAND, TYPE_COMPARE, TYPE_COMPOUND, TYPE_CONS, TYPE_IF, TYPE_INTEGER, TYPE_LIST, TYPE_NULLLIST, TYPE_NUMERICCOMPARE, TYPE_OBJECT, TYPE_OPERATOR, TYPE_OR, TYPE_ORPREDICATE, TYPE_PREDICATE, TYPE_PREDICATETERMS, TYPE_REAL, TYPE_TYPE, TYPE_UNARYARITHMETIC, TYPE_UNARYOPERATOR, TYPE_UNDEFINED, TYPE_VARIABLE

Constructor Summary

jClause(jTerm l, jTerm r)

Method Summary

void	addGoals(jGoal g, iGoalStack goals) Adds goal to prove this predicate onto goal stack.
void	addGoals(jGoal g, jVariable[] vars, iGoalStack goals) Adds goal to prove this predicate onto goal stack.
protected jBinaryBuiltinPredicate	duplicate(jTerm l, jTerm r)
protected jDynamicRuleDefinitions	getDynamicRules(jPredicate h, jKnowledgeBase kb)
String	getName() Returns the name of this instance.
protected jPredicate	getPredicate(jTerm t)
boolean	prove(jClauseGoal cg, jKnowledgeBase kb)
protected void	throwError(jTerm t)

Methods inherited from class ubc.cs.JLog.Terms.jBinaryBuiltinPredicate

compareArguments, consult, consultReset, copy, duplicate, enumerateVariables, equivalenceArguments, getArguments, getArity, getLHS, getRHS, isConsultNeeded, prove, registerUnboundVariables, registerVariables, toString, unifyArguments

Methods inherited from class ubc.cs.JLog.Terms.jBuiltinPredicate

equivalence, unify

Methods inherited from class ubc.cs.JLog.Terms.iPredicate

compare

Methods inherited from class ubc.cs.JLog.Terms.jTerm

compare, copy, getTerm, getValue, requiresCompleteVariableState, toString

Methods inherited from class ubc.cs.JLog.Foundation.jType

getType, objectToString

Methods inherited from class java.lang.Object

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

Constructor Detail

jClause

public jClause(jTerm l,
               jTerm r)

Method Detail

getName

public String getName()

Description copied from interface: iName

Returns the name of this instance.

Specified by:

getName in interface iName

Specified by:

getName in interface iTerm

Overrides:

getName in class jTerm

Returns:

String containing name of this instance.

prove

public boolean prove(jClauseGoal cg,
                     jKnowledgeBase kb)

getPredicate

protected jPredicate getPredicate(jTerm t)

getDynamicRules

protected jDynamicRuleDefinitions getDynamicRules(jPredicate h,
                                                  jKnowledgeBase kb)

throwError

protected void throwError(jTerm t)

addGoals

public void addGoals(jGoal g,
                     jVariable[] vars,
                     iGoalStack goals)

Description copied from class: iPredicate

Adds goal to prove this predicate onto goal stack. This version is called when the original predicate must duplicate itself (or its arguments). Add goals in the reverse order you want them evaluated.

Overrides:

addGoals in class jBinaryBuiltinPredicate

Parameters:

g - The super-goal jGoal for the sub-goal that this function will add.

vars - The vector of duplicate variables produced from the previous call to registerVariables. Needed for call to duplicate.

goals - The iGoalStack to add the goal to.

addGoals

public void addGoals(jGoal g,
                     iGoalStack goals)

Description copied from class: iPredicate

Adds goal to prove this predicate onto goal stack. This version is called when the original predicate is already duplicated (usually as part of an argument for another predicate). Add goals in the reverse order you want them evaluated.

Overrides:

addGoals in class jBinaryBuiltinPredicate

Parameters:

g - The super-goal jGoal for the sub-goal that this function will add.

goals - The iGoalStack to add the goal to.

duplicate

protected jBinaryBuiltinPredicate duplicate(jTerm l,
                                            jTerm r)

Specified by:

duplicate in class jBinaryBuiltinPredicate