Package org.drools.core.spi

Examples of org.drools.core.spi.FieldValue


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

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

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        pattern.addConstraint( constraint );
        rule1.addPattern( pattern );

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 510l;

            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 {

            }
           
            public String getName() {
                return "default";
            }
        } );

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

        final FieldValue field2 = FieldFactory.getInstance().getFieldValue( "stilton" );

        final MvelConstraint constraint2 = new MvelConstraintTestUtil("type == \"stilton\"", field, extractor);

        pattern2.addConstraint( constraint2 );
        rule2.addPattern( pattern2 );
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        final ClassFieldReader extractor = store.getReader(Cheese.class,
                "type",
                getClass().getClassLoader());

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

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        // With Memory
        final AlphaNode alphaNode = new AlphaNode( buildContext.getNextId(),
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        final InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                                "type",
                                                                getClass().getClassLoader() );

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

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        final AlphaNode alphaNode = new AlphaNode( buildContext.getNextId(),
                                                   constraint,
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        final InternalReadAccessor extractor = store.getReader( Cheese.class,
                                                                "type",
                                                                getClass().getClassLoader() );

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

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        final AlphaNode alphaNode = new AlphaNode( buildContext.getNextId(),
                                                   constraint,
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        final InternalReadAccessor extractor = store.getReader( clazz,
                                                                fieldName,
                                                                getClass().getClassLoader() );

        final FieldValue field = new LongFieldImpl( fieldValue );

        return new MvelConstraintTestUtil( fieldName + " == " + fieldValue,
                                           new LongFieldImpl( fieldValue ),
                                           extractor );
    }
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        final InternalReadAccessor extractor = store.getReader( clazz,
                                                                fieldName,
                                                                getClass().getClassLoader() );

        final FieldValue field = new BooleanFieldImpl( fieldValue );

        return new MvelConstraintTestUtil( fieldName + " == " + fieldValue,
                new BooleanFieldImpl( fieldValue ),
                extractor );
    }
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        final ClassFieldReader extractor = store.getReader( Cheese.class,
                                                            "type",
                                                            getClass().getClassLoader() );

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

        final MvelConstraint constraint = new MvelConstraintTestUtil("type == \"cheddar\"", field, extractor);

        pattern.addConstraint( constraint );
        rule1.addPattern( pattern );

        rule1.setConsequence( new Consequence() {
            private static final long serialVersionUID = 510l;

            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 {

            }
           
            public String getName() {
                return "default";
            }
        } );

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

        final FieldValue field2 = FieldFactory.getInstance().getFieldValue( "stilton" );

        final MvelConstraint constraint2 = new MvelConstraintTestUtil("type == \"stilton\"", field, extractor);

        pattern2.addConstraint( constraint2 );
        rule2.addPattern( pattern2 );
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        ValueType vtype = extractor.getValueType();
        String operator = relDescr.getOperator().trim();
        LiteralRestrictionDescr restrictionDescr = buildLiteralRestrictionDescr(context, relDescr, value2, operator, isConstant);

        if (restrictionDescr != null) {
            FieldValue field = getFieldValue(context, vtype, restrictionDescr);
            if (field != null) {
                Constraint constraint = getConstraintBuilder( context ).buildLiteralConstraint(context, pattern, vtype, field, expr, value1, operator, value2, extractor, restrictionDescr);
                if (constraint != null) {
                    pattern.addConstraint(constraint);
                    return true;
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    }

    protected FieldValue getFieldValue(RuleBuildContext context,
                                     ValueType vtype,
                                     LiteralRestrictionDescr literalRestrictionDescr) {
        FieldValue field = null;
        try {
            String value = literalRestrictionDescr.getText().trim();
            MVEL.COMPILER_OPT_ALLOW_NAKED_METH_CALL = true;
            MVEL.COMPILER_OPT_ALLOW_OVERRIDE_ALL_PROPHANDLING = true;
            MVEL.COMPILER_OPT_ALLOW_RESOLVE_INNERCLASSES_WITH_DOTNOTATION = true;
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                             final InternalFactHandle handle,
                             final InternalWorkingMemory workingMemory,
                             final ContextEntry context) {
        try {
            ReturnValueContextEntry ctx = (ReturnValueContextEntry) context;           
            FieldValue value = this.expression.evaluate( handle,
                                                         null,
                                                         this.previousDeclarations,
                                                         this.localDeclarations,
                                                         workingMemory,
                                                         ctx.dialectContext );
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