Package org.drools.rule

Examples of org.drools.rule.Pattern.addConstraint()

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                                                new SelfReferenceClassFieldReader( StockTick.class, "this" ),
                                                new VariableRestriction( null, c.getDeclaration(), evals.getEvaluator( ValueType.OBJECT_TYPE,
                                                                                                                       AfterEvaluatorDefinition.AFTER,
                                                                                                                       "2,3" ) ) ) );
        Pattern e = new Pattern( 4, ot, "$e" );
        e.addConstraint( new VariableConstraint(
                                                new SelfReferenceClassFieldReader( StockTick.class, "this" ),
                                                new VariableRestriction( null, d.getDeclaration(), evals.getEvaluator( ValueType.OBJECT_TYPE,
                                                                                                                       AfterEvaluatorDefinition.AFTER,
                                                                                                                       "1,10" ) ) ) );
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                                                                                     null );

        final LiteralConstraint constraint = new LiteralConstraint( extractor,
                                                                    evaluator,
                                                                    field );
        pattern.addConstraint( constraint );
        rule1.addPattern( pattern );

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 510l;
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        final FieldValue field2 = FieldFactory.getFieldValue( "stilton" );

        final LiteralConstraint constraint2 = new LiteralConstraint( extractor,
                                                                     evaluator,
                                                                     field2 );
        pattern2.addConstraint( constraint2 );
        rule2.addPattern( pattern2 );

        rule2.setConsequence( new Consequence() {
            private static final long serialVersionUID = 510l;
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                                                           null );

        final LiteralConstraint constraint = new LiteralConstraint( extractor,
                                                                    evaluator,
                                                                    field );
        pattern.addConstraint( constraint );
        rule.addPattern( pattern );

        rule.setConsequence( new Consequence() {
            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final org.drools.WorkingMemory workingMemory) throws Exception {
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                                                                    field );
       
        PatternBuilder.registerReadAccessor( context, queryObjectType, "name", constraint );

        // adds appropriate constraint to the pattern
        pattern.addConstraint( constraint );

        ObjectType argsObjectType = new ClassObjectType( ArrayElements.class );
       
        InternalReadAccessor arrayExtractor = PatternBuilder.getFieldReadAccessor( context, queryDescr, argsObjectType, "elements", null, true );
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                                                           null );

        final LiteralConstraint constraint = new LiteralConstraint( extractor,
                                                                    evaluator,
                                                                    field );
        pattern.addConstraint( constraint );
        rule.addPattern( pattern );

        rule.setConsequence( new Consequence() {
            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final org.drools.WorkingMemory workingMemory) throws Exception {
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        final Evaluator evaluator = ValueType.STRING_TYPE.getEvaluator( Operator.EQUAL );

        final LiteralConstraint constraint = new LiteralConstraint( extractor,
                                                              evaluator,
                                                              field );
        pattern.addConstraint( constraint );
        rule.addPattern( pattern );

        rule.setConsequence( new Consequence() {
            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final WorkingMemory workingMemory) throws Exception {
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        // -----------
        final Pattern contextPattern = new Pattern( 0,
                                                    this.contextType,
                                                    "context" );

        contextPattern.addConstraint( getLiteralConstraint( contextPattern,
                                                            "state",
                                                            Context.START_UP,
                                                            this.integerEqualEvaluator ) );

        rule.addPattern( contextPattern );
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        // ---------------
        final Pattern contextPattern = new Pattern( 0,
                                                    this.contextType,
                                                    "context" );

        contextPattern.addConstraint( getLiteralConstraint( contextPattern,
                                                            "state",
                                                            Context.ASSIGN_SEATS,
                                                            this.integerEqualEvaluator ) );

        rule.addPattern( contextPattern );
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        setFieldDeclaration( seatingPattern,
                             "pid",
                             "seatingPid" );

        seatingPattern.addConstraint( getLiteralConstraint( seatingPattern,
                                                            "pathDone",
                                                            true,
                                                            this.booleanEqualEvaluator ) );

        setFieldDeclaration( seatingPattern,
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