Package org.drools.rule

Examples of org.drools.rule.Pattern

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    }

    private Rule getOtherwise(final String name) {
        final Rule rule = new Rule( name );
        final Pattern pat = new Pattern( 0,
                                         new ClassObjectType( Otherwise.class) );
        rule.addPattern( pat );
        rule.setConsequence( new MockConsequence() );
        return rule;
    }
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    }

    private Rule getRule(final String name) {
        final Rule rule = new Rule( name );

        final Pattern pat = new Pattern( 0,
                                         new ClassObjectType( TestBean.class ) );

        rule.addPattern( pat );
        rule.setConsequence( new MockConsequence() );
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        // create a simpe package with one rule to test the events
        final Package pkg = new Package( "org.drools.test" );
        final Rule rule = new Rule( "test1" );
        rule.setAgendaGroup( "test group" );
        final ClassObjectType cheeseObjectType = new ClassObjectType( Cheese.class );
        final Pattern pattern = new Pattern( 0,
                                             cheeseObjectType );

        pkg.setClassFieldAccessorCache( new ClassFieldAccessorCache( Thread.currentThread().getContextClassLoader() ) );
        pkg.getClassFieldAccessorStore().setEagerWire( true );
        final ClassFieldReader extractor = pkg.getClassFieldAccessorStore().getReader( Cheese.class,
                                                                                       "type",
                                                                                       getClass().getClassLoader() );

        final FieldValue field = FieldFactory.getFieldValue( "cheddar" );

        final Evaluator evaluator = registry.getEvaluator( ValueType.STRING_TYPE,
                                                           Operator.EQUAL,
                                                           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 WorkingMemory workingMemory) throws Exception {
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                                                          fields );

        final InternalReadAccessor extractName = new FactTemplateFieldExtractor( cheese,
                                                                      0 );

        final Pattern pattern = new Pattern( 0,
                                          new FactTemplateObjectType( cheese ) );

        final Declaration declaration = new Declaration( "typeOfCheese",
                                                         extractName,
                                                         pattern );
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        ruleBase.addEventListener( listener1 );
        ruleBase.addEventListener( listener2 );

        final Rule rule1 = new Rule( "test1" );
        final ClassObjectType cheeseObjectType = new ClassObjectType( Cheese.class );
        final Pattern pattern = new Pattern( 0,
                                             cheeseObjectType );

        ClassFieldAccessorStore store = new ClassFieldAccessorStore();
        store.setClassFieldAccessorCache( new ClassFieldAccessorCache( Thread.currentThread().getContextClassLoader() ) );
        store.setEagerWire( true );

        final ClassFieldReader extractor = store.getReader( Cheese.class,
                                                            "type",
                                                            getClass().getClassLoader() );

        final FieldValue field = FieldFactory.getFieldValue( "cheddar" );

        final Evaluator evaluator = new EqualityEvaluatorsDefinition().getEvaluator( ValueType.STRING_TYPE,
                                                                                     Operator.EQUAL,
                                                                                     null );

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

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 1L;

            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final WorkingMemory workingMemory) throws Exception {
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }
        } );

        final Rule rule2 = new Rule( "test2" );
        final ClassObjectType cheeseObjectType2 = new ClassObjectType( Cheese.class );
        final Pattern pattern2 = new Pattern( 0,
                                              cheeseObjectType2 );

        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 = 1L;
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        final ClassFieldReader ageExtractor = store.getReader( Person.class,
                                                                     "age",
                                                                     getClass().getClassLoader() );

        final Pattern pattern = new Pattern( 0,
                                             new ClassObjectType( Person.class ) );

        final Declaration declaration = new Declaration( "age",
                                                         ageExtractor,
                                                         pattern );
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    /**
     * Test method for {@link org.drools.reteoo.builder.ReteooRuleBuilder#addRule(org.drools.rule.Rule, org.drools.reteoo.ReteooRuleBase, java.util.Map, int)}.
     */
    public void testAddRuleWithPatterns() {
        final Rule rule = new Rule( "only patterns" );
        final Pattern c1 = new Pattern( 0,
                                new ClassObjectType( String.class ) );
        final Pattern c2 = new Pattern( 1,
                                new ClassObjectType( String.class ) );
        final Pattern c3 = new Pattern( 2,
                                new ClassObjectType( String.class ) );

        final GroupElement lhsroot = GroupElementFactory.newAndInstance();
        lhsroot.addChild( c1 );
        lhsroot.addChild( c2 );
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                                        };

        AfterEvaluatorDefinition evals = new AfterEvaluatorDefinition();
        ClassObjectType ot = new ClassObjectType(StockTick.class, true);
       
        Pattern a = new Pattern( 0, ot, "$a" );
        Pattern b = new Pattern( 1, ot, "$b" );
        b.addConstraint( new VariableConstraint(
                         new SelfReferenceClassFieldReader( StockTick.class, "this" ),
                         new VariableRestriction( null, a.getDeclaration(), evals.getEvaluator( ValueType.OBJECT_TYPE,
                                                                                                AfterEvaluatorDefinition.AFTER,
                                                                                                "-2,2" ) ) ) );
        Pattern c = new Pattern( 2, ot, "$c" );
        c.addConstraint( new VariableConstraint(
                                                new SelfReferenceClassFieldReader( StockTick.class, "this" ),
                                                new VariableRestriction( null, a.getDeclaration(), evals.getEvaluator( ValueType.OBJECT_TYPE,
                                                                                                                       AfterEvaluatorDefinition.AFTER,
                                                                                                                       "-3,4" ) ) ) );
        Pattern d = new Pattern( 3, ot, "$d" );
        d.addConstraint( new VariableConstraint(
                                                new SelfReferenceClassFieldReader( StockTick.class, "this" ),
                                                new VariableRestriction( null, b.getDeclaration(), evals.getEvaluator( ValueType.OBJECT_TYPE,
                                                                                                                       AfterEvaluatorDefinition.AFTER,
                                                                                                                       "1,2" ) ) ) );
        d.addConstraint( new VariableConstraint(
                                                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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        kbase.addEventListener( listener1 );
        kbase.addEventListener( listener2 );

        final Rule rule1 = new Rule( "test1" );
        final ClassObjectType cheeseObjectType = new ClassObjectType( Cheese.class );
        final Pattern pattern = new Pattern( 0,
                                             cheeseObjectType );

        ClassFieldAccessorStore store = new ClassFieldAccessorStore();
        store.setClassFieldAccessorCache( new ClassFieldAccessorCache( Thread.currentThread().getContextClassLoader() ) );
        store.setEagerWire( true );

        final ClassFieldReader extractor = store.getReader( Cheese.class,
                                                            "type",
                                                            getClass().getClassLoader() );

        final FieldValue field = FieldFactory.getFieldValue( "cheddar" );

        final Evaluator evaluator = new EqualityEvaluatorsDefinition().getEvaluator( ValueType.STRING_TYPE,
                                                                                     Operator.EQUAL,
                                                                                     null );

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

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 1L;

            public void evaluate(final KnowledgeHelper knowledgeHelper,
                                 final WorkingMemory workingMemory) throws Exception {
            }

            public void readExternal(ObjectInput in) throws IOException,
                                                    ClassNotFoundException {

            }

            public void writeExternal(ObjectOutput out) throws IOException {

            }
        } );

        final Rule rule2 = new Rule( "test2" );
        final ClassObjectType cheeseObjectType2 = new ClassObjectType( Cheese.class );
        final Pattern pattern2 = new Pattern( 0,
                                              cheeseObjectType2 );

        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 = 1L;
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        InternalReadAccessor extractor = store.getReader( clazz,
                                                          fieldName,
                                                          getClass().getClassLoader() );
        Declaration declaration = new Declaration( identifier,
                                                   extractor,
                                                   new Pattern( 0,
                                                                new ClassObjectType( clazz ) ) );
        Evaluator evaluator = registry.getEvaluatorDefinition( operator.getOperatorString() ).getEvaluator( extractor.getValueType(),
                                                                                                            operator.getOperatorString(),
                                                                                                            operator.isNegated(),
                                                                                                            null );
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  • org.drools.common.BaseBetaConstraintsTest
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  • org.drools.compiler.PackageBuilderTest
  • org.drools.event.AgendaEventSupportTest
  • org.drools.event.knowledgebase.KnowledgeBaseEventSupportTest
  • org.drools.event.rule.AgendaEventSupportTest
  • org.drools.event.RuleBaseEventListenerTest
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