Package org.drools.core.rule

Examples of org.drools.core.rule.Pattern

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     * @param subrule
     */
    private void addInitialFactPattern( final GroupElement subrule ) {

        // creates a pattern for initial fact
        final Pattern pattern = new Pattern( 0,
                                             ClassObjectType.InitialFact_ObjectType );

        // adds the pattern as the first child of the given AND group element
        subrule.addChild( 0,
                          pattern );
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     */
    public void build( final BuildContext context,
                       final BuildUtils utils,
                       final WindowDeclaration window ) {

        final Pattern pattern = window.getPattern();

        final ReteooComponentBuilder builder = utils.getBuilderFor( pattern );

        context.setAttachPQN( false );
        builder.build( context,
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        streamMode = context.isStreamMode() && context.getRootObjectTypeNode().getObjectType().isEvent();
        sinkMask = calculateSinkMask(context);
    }

    private long calculateSinkMask(BuildContext context) {
        Pattern pattern = context.getLastBuiltPatterns() != null ? context.getLastBuiltPatterns()[0] : null;
        if (pattern == null) {
            return -1L;
        }
        ObjectType objectType = pattern.getObjectType();
        if ( !(objectType instanceof ClassObjectType) ) {
            // Only ClassObjectType can use property specific
            return -1L;
        }

        Class objectClass = ((ClassWireable) objectType).getClassType();
        return isPropertyReactive( context, objectClass ) ?
               calculatePositiveMask( pattern.getListenedProperties(),
                                      getSettableProperties( context.getKnowledgeBase(), objectClass ) ) :
               -1L;
    }
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            // RTN's not after LIANode are not relevant for property specific, so don't block anything.
            setDeclaredMask( -1L );
            return;
        }

        Pattern pattern = context.getLastBuiltPatterns()[0];
        ObjectType objectType = pattern.getObjectType();

        if ( !(objectType instanceof ClassObjectType) ) {
            // InitialFact has no type declaration and cannot be property specific
            // Only ClassObjectType can use property specific
            setDeclaredMask( -1L );
            return;
        }

        Class objectClass = ((ClassObjectType)objectType).getClassType();
        TypeDeclaration typeDeclaration = context.getKnowledgeBase().getTypeDeclaration(objectClass);
        if (  typeDeclaration == null || !typeDeclaration.isPropertyReactive() ) {
            // if property specific is not on, then accept all modification propagations
            setDeclaredMask( -1L );
        } else  {
            List<String> settableProperties = getSettableProperties(context.getKnowledgeBase(), objectClass);
            setDeclaredMask( calculatePositiveMask(pattern.getListenedProperties(), settableProperties) );
            setNegativeMask( calculateNegativeMask(pattern.getListenedProperties(), settableProperties) );
        }
    }
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            super.initDeclaredMask(context, leftInput);
            return;
        }

        if (!isRightInputIsRiaNode()) {
            Pattern pattern = context.getLastBuiltPatterns()[0]; // right input pattern
            ObjectType objectType = pattern.getObjectType();

            if (objectType instanceof ClassObjectType) {
                Class objectClass = ((ClassObjectType) objectType).getClassType();
                if (isPropertyReactive(context, objectClass)) {
                    rightListenedProperties = pattern.getListenedProperties();
                    List<String> settableProperties = getSettableProperties(context.getKnowledgeBase(), objectClass);
                    rightDeclaredMask = calculatePositiveMask(rightListenedProperties, settableProperties);
                    rightDeclaredMask |= constraints.getListenedPropertyMask(settableProperties);
                    rightNegativeMask = calculateNegativeMask(rightListenedProperties, settableProperties);
                } else {
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            if ( pkg != null ) {
                Class<?> cls = this.map.get( identifier );
                ClassObjectType classObjectType = new ClassObjectType( cls );

                Declaration declaration;
                final Pattern dummy = new Pattern( 0,
                                                   classObjectType );

                InternalReadAccessor globalExtractor = getReadAcessor( identifier,
                                                                       classObjectType );
                declaration = new Declaration( identifier,
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    private Pattern findPatternInNestedElements(final int index,
                                                final RuleConditionElement rce) {
        for ( RuleConditionElement element : rce.getNestedElements() ) {
            if ( element instanceof Pattern ) {
                Pattern p = (Pattern) element;
                if ( p.getIndex() == index ) {
                    return p;
                }
            } else if ( !element.isPatternScopeDelimiter() ) {
                Pattern p = findPatternInNestedElements( index,
                                                         element );
                if ( p != null ) {
                    return p;
                }
            }
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            // only happens during unit tests
            declaredMask = -1L;
            return;
        }
       
        Pattern pattern = context.getLastBuiltPatterns()[0];
        ObjectType objectType = pattern.getObjectType();
       
        if ( !(objectType instanceof ClassObjectType)) {
            // Only ClassObjectType can use property specific
            declaredMask = -1L;
            return;
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            // BetaNode's not after LIANode are not relevant for left mask property specific, so don't block anything.
            leftDeclaredMask = -1L;
            return;
        }

        Pattern pattern = context.getLastBuiltPatterns()[1]; // left input pattern

        ObjectType objectType = pattern == null || this.getType() == NodeTypeEnums.AccumulateNode ?
            ((LeftInputAdapterNode)leftInput).getParentObjectSource().getObjectTypeNode().getObjectType() :
            pattern.getObjectType();

        if ( !(objectType instanceof ClassObjectType) ) {
            // Only ClassObjectType can use property specific
            leftDeclaredMask = -1L;
            return;
        }

        Class objectClass = ((ClassWireable) objectType).getClassType();
        if ( isPropertyReactive(context, objectClass) ) {
            // TODO: at the moment if pattern is null (e.g. for eval node) we cannot calculate the mask, so we leave it to 0
            if ( pattern != null ) {
                List<String> leftListenedProperties = pattern.getListenedProperties();
                List<String> settableProperties = getSettableProperties( context.getKnowledgeBase(), objectClass );
                leftDeclaredMask = calculatePositiveMask( leftListenedProperties, settableProperties );
                leftNegativeMask = calculateNegativeMask( leftListenedProperties, settableProperties );
                setLeftListenedProperties(leftListenedProperties);
            }
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                               " x + y " );
        builder1.addPackage( packageDescr1 );
        if ( builder1.hasErrors() ) {
            fail( builder1.getErrors().toString() );
        }
        final Pattern pattern1 = (Pattern) ((RuleImpl)builder1.getPackage().getRules().iterator().next()).getLhs().getChildren().get( 0 );
        final Constraint returnValue1 = pattern1.getConstraints().get( 0 );

        final KnowledgeBuilderImpl builder2 = new KnowledgeBuilderImpl();
        final PackageDescr packageDescr2 = new PackageDescr( "package2" );
        createReturnValueRule( packageDescr2,
                               " x + y " );
        builder2.addPackage( packageDescr2 );
        final Pattern pattern2 = (Pattern) ((RuleImpl)builder2.getPackage().getRules().iterator().next()).getLhs().getChildren().get( 0 );
        final Constraint returnValue2 = pattern2.getConstraints().get( 0 );

        final KnowledgeBuilderImpl builder3 = new KnowledgeBuilderImpl();
        final PackageDescr packageDescr3 = new PackageDescr( "package3" );
        createReturnValueRule( packageDescr3,
                               " x - y " );
        builder3.addPackage( packageDescr3 );
        final Pattern pattern3 = (Pattern) ((RuleImpl)builder3.getPackage().getRules().iterator().next()).getLhs().getChildren().get( 0 );
        final Constraint returnValue3 = pattern3.getConstraints().get( 0 );

        assertEquals( returnValue1,
                      returnValue2 );
        assertFalse( returnValue1.equals( returnValue3 ) );
        assertFalse( returnValue2.equals( returnValue3 ) );
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Related Classes of org.drools.core.rule.Pattern

  • org.drools.compiler.builder.impl.KnowledgeBuilderImpl
  • org.drools.compiler.builder.impl.KnowledgeBuilderTest
  • org.drools.compiler.compiler.PackageBuilder
  • org.drools.compiler.compiler.PackageBuilderTest
  • org.drools.compiler.integrationtests.AnnotationsTest
  • org.drools.compiler.phreak.BetaNodeBuilder
  • org.drools.compiler.rule.builder.CollectBuilder
  • org.drools.compiler.rule.builder.ConditionalBranchBuilder
  • org.drools.compiler.rule.builder.dialect.java.JavaAccumulateBuilder
  • org.drools.compiler.rule.builder.dialect.java.JavaConsequenceBuilderTest
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