ubc.cs.JLog.Terms
Class jClause

java.lang.Object
  extended by ubc.cs.JLog.Foundation.jType
      extended by ubc.cs.JLog.Terms.jTerm
          extended by ubc.cs.JLog.Terms.iPredicate
              extended by ubc.cs.JLog.Terms.jBuiltinPredicate
                  extended by ubc.cs.JLog.Terms.jBinaryBuiltinPredicate
                      extended by 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)
           
 java.lang.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 java.lang.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