Package org.drools.rule

Examples of org.drools.rule.LiteralConstraint

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        final GroupElement and = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      and.getChildren() );
        final Pattern pattern = (Pattern) and.getChildren().get( 0 );

        final LiteralConstraint literalConstraint = (LiteralConstraint) pattern.getConstraints().get( 0 );
    }
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        final GroupElement not = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      not.getChildren() );
        final Pattern pattern = (Pattern) not.getChildren().get( 0 );

        final LiteralConstraint literalConstarint = (LiteralConstraint) pattern.getConstraints().get( 0 );
    }
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        final GroupElement exists = (GroupElement) lhs.getChildren().get( 0 );
        assertLength( 1,
                      exists.getChildren() );
        final Pattern pattern = (Pattern) exists.getChildren().get( 0 );

        final LiteralConstraint literalConstarint = (LiteralConstraint) pattern.getConstraints().get( 0 );
    }
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        if (!(fieldConstraint instanceof LiteralConstraint)) {
            throw new IllegalArgumentException("Only support LiteralConstraint hashed AlphaNodes, not " + fieldConstraint.getClass());
        }
        // we need to get the first alpha in the map to get the attribute name that be use for the prefix of the
        // generated variable name
        final LiteralConstraint literalConstraint = (LiteralConstraint) alphaNode.getConstraint();

        return (ClassFieldReader) literalConstraint.getFieldExtractor();
    }
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    }

    public void testSingleAlpha() {

        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        final LiteralConstraint lit = new LiteralConstraint( new MockExtractor(),
                                                             StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                             new ObjectFieldImpl( "stilton" ) );
        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( 0 ),
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    }

    public void testDoubleAlphaWithBeta() {

        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        final LiteralConstraint lit = new LiteralConstraint( new MockExtractor(),
                                                             StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                             new ObjectFieldImpl( "stilton" ) );
        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( 0 ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final LiteralConstraint lit2 = new LiteralConstraint( new MockExtractor(),
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "cheddar" ) );
        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
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    }

    public void testTripleAlpha() {
        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        final LiteralConstraint lit = new LiteralConstraint( new MockExtractor(),
                                                             StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                             new ObjectFieldImpl( "stilton" ) );
        final AlphaNode al = new AlphaNode( buildContext.getNextId(),
                                            lit,
                                            new MockObjectSource( buildContext.getNextId() ),
                                            buildContext );

        ad.addObjectSink( al );

        assertNull( ad.otherSinks );
        assertNotNull( ad.hashedFieldIndexes );
        assertEquals( 1,
                      ad.hashableSinks.size() );
        assertEquals( al,
                      ad.getSinks()[0] );

        final LiteralConstraint lit2 = new LiteralConstraint( new MockExtractor(),
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "cheddar" ) );
        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        ad.addObjectSink( al2 );

        assertNull( ad.hashedSinkMap );
        assertEquals( 2,
                      ad.hashableSinks.size() );

        final LiteralConstraint lit3 = new LiteralConstraint( new MockExtractor(),
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "stinky" ) );
        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
                                             new MockObjectSource( buildContext.getNextId() ),
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        final CompositeObjectSinkAdapter ad = new CompositeObjectSinkAdapter();
        FieldExtractor extractor = ClassFieldExtractorCache.getInstance().getExtractor( Cheese.class,
                                                                                        "type",
                                                                                        this.getClass().getClassLoader() );
        final LiteralConstraint lit1 = new LiteralConstraint( extractor,
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "stilton" ) );
        final AlphaNode al1 = new AlphaNode( buildContext.getNextId(),
                                             lit1,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        final LiteralConstraint lit2 = new LiteralConstraint( extractor,
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "brie" ) );
        final AlphaNode al2 = new AlphaNode( buildContext.getNextId(),
                                             lit2,
                                             new MockObjectSource( buildContext.getNextId() ),
                                             buildContext );

        final LiteralConstraint lit3 = new LiteralConstraint( extractor,
                                                              StringFactory.getInstance().getEvaluator( Operator.EQUAL ),
                                                              new ObjectFieldImpl( "muzzarela" ) );
        final AlphaNode al3 = new AlphaNode( buildContext.getNextId(),
                                             lit3,
                                             new MockObjectSource( buildContext.getNextId() ),
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        if ( sink instanceof AlphaNode ) {
            final AlphaNode alphaNode = (AlphaNode) sink;
            final AlphaNodeFieldConstraint fieldConstraint = alphaNode.getConstraint();

            if ( fieldConstraint instanceof LiteralConstraint ) {
                final LiteralConstraint literalConstraint = (LiteralConstraint) fieldConstraint;
                final Evaluator evaluator = literalConstraint.getEvaluator();

                if ( evaluator.getOperator() == Operator.EQUAL && literalConstraint.getFieldExtractor().getValueType() != ValueType.OBJECT_TYPE ) {
                    final InternalReadAccessor readAccessor = literalConstraint.getFieldExtractor();
                    final int index = readAccessor.getIndex();
                    final FieldIndex fieldIndex = registerFieldIndex( index,
                                                                      readAccessor );

                    if ( fieldIndex.getCount() >= this.alphaNodeHashingThreshold && this.alphaNodeHashingThreshold != 0 ) {
                        if ( !fieldIndex.isHashed() ) {
                            hashSinks( fieldIndex );
                        }
                        final FieldValue value = literalConstraint.getField();
                        // no need to check, we know  the sink  does not exist
                        this.hashedSinkMap.put( new HashKey( index,
                                                             value,
                                                             fieldIndex.getFieldExtractor() ),
                                                alphaNode,
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        if ( sink instanceof AlphaNode ) {
            final AlphaNode alphaNode = (AlphaNode) sink;
            final AlphaNodeFieldConstraint fieldConstraint = alphaNode.getConstraint();

            if ( fieldConstraint instanceof LiteralConstraint ) {
                final LiteralConstraint literalConstraint = (LiteralConstraint) fieldConstraint;
                final Evaluator evaluator = literalConstraint.getEvaluator();
                final FieldValue value = literalConstraint.getField();

                if ( evaluator.getOperator() == Operator.EQUAL && literalConstraint.getFieldExtractor().getValueType() != ValueType.OBJECT_TYPE ) {
                    final InternalReadAccessor fieldAccessor = literalConstraint.getFieldExtractor();
                    final int index = fieldAccessor.getIndex();
                    final FieldIndex fieldIndex = unregisterFieldIndex( index );

                    if ( fieldIndex.isHashed() ) {
                        HashKey hashKey = new HashKey( index,
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