Package org.drools.rule

Examples of org.drools.rule.VariableConstraint

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        this.context = constraint.getContextEntry();
    }

    private boolean isIndexable(final BetaNodeFieldConstraint constraint) {
        if ( constraint instanceof VariableConstraint ) {
            final VariableConstraint variableConstraint = (VariableConstraint) constraint;
            return (variableConstraint.getEvaluator().getOperator() == Operator.EQUAL);
        } else {
            return false;
        }
    }
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    }

    public BetaMemory createBetaMemory(final RuleBaseConfiguration config) {
        BetaMemory memory;
        if ( this.indexed ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            TupleMemory tupleMemory;
            if ( this.conf.isIndexLeftBetaMemory() ) {
                tupleMemory = new TupleIndexHashTable( new FieldIndex[]{index} );
            } else {
                tupleMemory = new TupleHashTable();
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        constraints[p1] = temp;
    }

    private boolean isIndexable(final BetaNodeFieldConstraint constraint) {
        if ( constraint instanceof VariableConstraint ) {
            final VariableConstraint variableConstraint = (VariableConstraint) constraint;
            return (variableConstraint.getEvaluator().getOperator() == Operator.EQUAL);
        } else {
            return false;
        }
    }
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        BetaMemory memory;

        final List list = new ArrayList( 2 );
        if ( this.indexed0 ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint0;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            list.add( index );

        }

        if ( this.indexed1 ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint1;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            list.add( index );
        }

        if ( this.indexed2 ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint2;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            list.add( index );
        }

        if ( !list.isEmpty() ) {
            final FieldIndex[] indexes = (FieldIndex[]) list.toArray( new FieldIndex[list.size()] );
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        final Declaration declaration = new Declaration( "age",
                                                         ageExtractor,
                                                         pattern );

        final VariableConstraint variableConstraint = new VariableConstraint( priceExtractor,
                                                                              declaration,
                                                                              ValueType.PINTEGER_TYPE.getEvaluator( Operator.EQUAL ) );
        final RuleBaseConfiguration configuration = new RuleBaseConfiguration();
        configuration.setIndexRightBetaMemory( false );
        configuration.setIndexLeftBetaMemory( false );
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            registerReadAccessor( context,
                                  pattern.getObjectType(),
                                  fieldName,
                                  (LiteralRestriction) restriction );
        } else if ( restriction instanceof VariableRestriction ||  restriction instanceof UnificationRestriction ) {
            constraint = new VariableConstraint( extractor,
                                                 restriction );
            registerReadAccessor( context,
                                  pattern.getObjectType(),
                                  fieldName,
                                  (AcceptsReadAccessor) restriction );
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        return current;
    }

    public static boolean isIndexable(final BetaNodeFieldConstraint constraint) {
        if ( constraint instanceof VariableConstraint ) {
            final VariableConstraint variableConstraint = (VariableConstraint) constraint;
            if( variableConstraint.getRestriction() instanceof VariableRestriction ){
                return (variableConstraint.getEvaluator().getOperator() == Operator.EQUAL);
             }
        }
        return false;
    }
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            LinkedListEntry entry = (LinkedListEntry) this.constraints.getFirst();
            final List list = new ArrayList();

            for ( int pos = 0; pos <= this.indexed; pos++ ) {
                final Constraint constraint = (Constraint) entry.getObject();
                final VariableConstraint variableConstraint = (VariableConstraint) constraint;
                final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                         variableConstraint.getRequiredDeclarations()[0],
                                                         variableConstraint.getEvaluator() );
                list.add( index );
                entry = (LinkedListEntry) entry.getNext();
            }

            final FieldIndex[] indexes = (FieldIndex[]) list.toArray( new FieldIndex[list.size()] );
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    public BetaMemory createBetaMemory(final RuleBaseConfiguration config) {
        BetaMemory memory;

        final List list = new ArrayList( 2 );
        if ( this.indexed0 ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint0;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            list.add( index );

        }

        if ( this.indexed1 ) {
            final VariableConstraint variableConstraint = (VariableConstraint) this.constraint1;
            final FieldIndex index = new FieldIndex( variableConstraint.getFieldExtractor(),
                                                     variableConstraint.getRequiredDeclarations()[0],
                                                     variableConstraint.getEvaluator() );
            list.add( index );
        }

        if ( !list.isEmpty() ) {
            final FieldIndex[] indexes = (FieldIndex[]) list.toArray( new FieldIndex[list.size()] );
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            if ( restriction == null || extractor == null ) {
                // something failed and an error should already have been reported
                return;
            }
            pattern.addConstraint( new VariableConstraint( extractor,
                                                           restriction ) );
        }
    }
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Related Classes of org.drools.rule.VariableConstraint

  • org.drools.common.BaseBetaConstraintsTest
  • org.drools.common.DefaultBetaConstraints
  • org.drools.common.DefaultBetaConstraintsTest
  • org.drools.common.DoubleBetaConstraints
  • org.drools.common.DoubleBetaConstraintsTest
  • org.drools.common.QuadroupleBetaConstraints
  • org.drools.common.QuadroupleBetaConstraintsTest
  • org.drools.common.SingleBetaConstraints
  • org.drools.common.SingleBetaConstraintsTest
  • org.drools.common.TripleBetaConstraints
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