Examples of org.drools.definition.type.FactType

org.drools.definition.type.FactType
FactType declarations are fact definitions (like classes) that are managed alongside the rules. You then communicate with the rulebase/knowledge base by using instances created by this. There are utility set and get methods on this, as well as in the FactFields. The Object that is used is a javabean (which was generated by the engine). You can also use reflection on it as normal. @author etirelli

        }
        KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            Class trait = kb.getFactType( "org.test",
                                          "Student" ).getFactClass();
            TraitProxy proxy = (TraitProxy) new TraitFactory( kb ).getProxy( imp,
                                                                             trait );


            Map<String, Object> virtualFields = imp.getDynamicProperties();
            Map<String, Object> wrapper = proxy.getFields();


            wrapper.put( "name",
                         "john" );


            wrapper.put( "virtualField",
                         "xyz" );


            wrapper.entrySet();
            assertEquals( 4,
                          wrapper.size() );
            assertEquals( 2,
                          virtualFields.size() );


            assertEquals( "john",
                          wrapper.get( "name" ) );
            assertEquals( "xyz",
                          wrapper.get( "virtualField" ) );


            assertEquals( "john",
                          impClass.get( imp,
                                        "name" ) );


        } catch (Exception e) {
            e.printStackTrace();
            fail( e.getMessage() );

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        KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            impClass.set( imp,
                          "name",
                          "aaa" );


            Class trait = kb.getFactType( "org.test",
                                          "Student" ).getFactClass();
            Class trait2 = kb.getFactType( "org.test",
                                           "Role" ).getFactClass();


            assertNotNull( trait );
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );
            proxy.getFields().put( "field",
                                   "xyz" );
            //            proxy.getFields().put("name", "aaa");


            assertNotNull( proxy );


            TraitProxy proxy2 = (TraitProxy) traitBuilder.getProxy( imp,
                                                                    trait );
            assertSame( proxy2,
                        proxy );


            TraitProxy proxy3 = (TraitProxy) traitBuilder.getProxy( imp,
                                                                    trait2 );
            assertNotNull( proxy3 );
            assertEquals( "xyz",
                          proxy3.getFields().get( "field" ) );
            assertEquals( "aaa",
                          proxy3.getFields().get( "name" ) );


            TraitableBean imp2 = (TraitableBean) impClass.newInstance();
            impClass.set( imp2,
                          "name",
                          "aaa" );
            TraitProxy proxy4 = (TraitProxy) traitBuilder.getProxy( imp2,
                                                                    trait );
            //            proxy4.getFields().put("name", "aaa");

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        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            FactType traitClass = kb.getFactType( "org.test",
                                                  "Student" );
            Class trait = traitClass.getFactClass();
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );


            Map<String, Object> virtualFields = imp.getDynamicProperties();
            Map<String, Object> wrapper = proxy.getFields();
            assertEquals( 3,
                          wrapper.size() );
            assertEquals( 1,
                          virtualFields.size() );


            impClass.set( imp,
                          "name",
                          "john" );
            assertEquals( 3,
                          wrapper.size() );
            assertEquals( 1,
                          virtualFields.size() );


            proxy.getFields().put( "school",
                                   "skol" );
            assertEquals( 3,
                          wrapper.size() );
            assertEquals( 1,
                          virtualFields.size() );


            proxy.getFields().put( "surname",
                                   "xxx" );
            assertEquals( 4,
                          wrapper.size() );
            assertEquals( 2,
                          virtualFields.size() );


            //            FactType indClass = kb.getFactType("org.test","Entity");
            //            TraitableBean ind = (TraitableBean) indClass.newInstance();
            TraitableBean ind = new Entity();


            TraitProxy proxy2 = (TraitProxy) traitBuilder.getProxy( ind,
                                                                    trait );


            Map virtualFields2 = ind.getDynamicProperties();
            Map wrapper2 = proxy2.getFields();
            assertEquals( 3,
                          wrapper2.size() );
            assertEquals( 3,
                          virtualFields2.size() );


            traitClass.set( proxy2,
                            "name",
                            "john" );
            assertEquals( 3,
                          wrapper2.size() );
            assertEquals( 3,
                          virtualFields2.size() );


            proxy2.getFields().put( "school",
                                    "skol" );
            assertEquals( 3,
                          wrapper2.size() );
            assertEquals( 3,
                          virtualFields2.size() );


            proxy2.getFields().put( "surname",
                                    "xxx" );
            assertEquals( 4,
                          wrapper2.size() );
            assertEquals( 4,
                          virtualFields2.size() );


            FactType traitClass2 = kb.getFactType( "org.test",
                                                   "Role" );
            Class trait2 = traitClass2.getFactClass();
            //            TraitableBean ind2 = (TraitableBean) indClass.newInstance();
            TraitableBean ind2 = new Entity();


            TraitProxy proxy99 = (TraitProxy) traitBuilder.getProxy( ind2,
                                                                     trait2 );

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        KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();


            FactType studentClass = kb.getFactType( "org.test",
                                                    "Student" );
            Class trait = studentClass.getFactClass();
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );


            Map<String, Object> virtualFields = imp.getDynamicProperties();
            Map<String, Object> wrapper = proxy.getFields();
            assertFalse( wrapper.isEmpty() );


            studentClass.set( proxy,
                              "name",
                              "john" );
            assertFalse( wrapper.isEmpty() );
            studentClass.set( proxy,
                              "name",
                              null );
            assertFalse( wrapper.isEmpty() );


            studentClass.set( proxy,
                              "age",
                              32 );
            assertFalse( wrapper.isEmpty() );


            studentClass.set( proxy,
                              "age",
                              null );
            assertFalse( wrapper.isEmpty() );


            //            FactType indClass = kb.getFactType("org.test","Entity");
            TraitableBean ind = new Entity();


            FactType RoleClass = kb.getFactType( "org.test",
                                                 "Role" );
            Class trait2 = RoleClass.getFactClass();
            TraitProxy proxy2 = (TraitProxy) traitBuilder.getProxy( ind,
                                                                    trait2 );


            Map<String, Object> wrapper2 = proxy2.getFields();
            assertTrue( wrapper2.isEmpty() );

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        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            impClass.set( imp,
                          "name",
                          "john" );


            FactType traitClass = kb.getFactType( "org.test",
                                                  "Student" );
            Class trait = traitClass.getFactClass();
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );


            Map<String, Object> virtualFields = imp.getDynamicProperties();
            Map<String, Object> wrapper = proxy.getFields();


            assertTrue( wrapper.containsKey( "name" ) );
            assertTrue( wrapper.containsKey( "school" ) );
            assertTrue( wrapper.containsKey( "age" ) );
            assertFalse( wrapper.containsKey( "surname" ) );


            proxy.getFields().put( "school",
                                   "skol" );
            proxy.getFields().put( "surname",
                                   "xxx" );
            assertTrue( wrapper.containsKey( "surname" ) );


            //            FactType indClass = kb.getFactType("org.test","Entity");
            TraitableBean ind = new Entity();


            TraitProxy proxy2 = (TraitProxy) traitBuilder.getProxy( ind,
                                                                    trait );


            Map virtualFields2 = ind.getDynamicProperties();
            Map wrapper2 = proxy2.getFields();
            assertTrue( wrapper2.containsKey( "name" ) );
            assertTrue( wrapper2.containsKey( "school" ) );
            assertTrue( wrapper2.containsKey( "age" ) );
            assertFalse( wrapper2.containsKey( "surname" ) );


            traitClass.set( proxy2,
                            "name",
                            "john" );
            proxy2.getFields().put( "school",
                                    "skol" );
            proxy2.getFields().put( "surname",
                                    "xxx" );
            assertTrue( wrapper2.containsKey( "surname" ) );


            FactType traitClass2 = kb.getFactType( "org.test",
                                                   "Role" );
            Class trait2 = traitClass2.getFactClass();
            TraitableBean ind2 = new Entity();


            TraitProxy proxy99 = (TraitProxy) traitBuilder.getProxy( ind2,
                                                                     trait2 );
            Map<String, Object> wrapper99 = proxy99.getFields();

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        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            FactType traitClass = kb.getFactType( "org.test",
                                                  "Student" );
            Class trait = traitClass.getFactClass();
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );


            impClass.set( imp,
                          "name",

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        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
            FactType impClass = kb.getFactType( "org.test",
                                                "Imp" );
            TraitableBean imp = (TraitableBean) impClass.newInstance();
            impClass.set( imp,
                          "name",
                          "john" );
            FactType traitClass = kb.getFactType( "org.test",
                                                  "Student" );
            Class trait = traitClass.getFactClass();
            TraitProxy proxy = (TraitProxy) traitBuilder.getProxy( imp,
                                                                   trait );


            proxy.getFields().put( "surname",
                                   "xxx" );

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        KnowledgeBase kb = KnowledgeBaseFactory.newKnowledgeBase();
        kb.addKnowledgePackages(kbuilder.getKnowledgePackages());
        TraitFactory traitBuilder = new TraitFactory( kb );


        try {
        FactType impClass = kb.getFactType("org.test","Imp");
        TraitableBean imp = (TraitableBean) impClass.newInstance();
                impClass.set(imp, "name", "aaabcd");


            Class trait = kb.getFactType("org.test","Student").getFactClass();
            Class trait2 = kb.getFactType("org.test","Role").getFactClass();


            assertNotNull( trait);

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    public FactType getFactType(final String name) {
        readLock();
        try {
            for ( Package pkg : this.pkgs.values() ) {
                FactType type = pkg.getFactType( name );
                if ( type != null ) {
                    return type;
                }
            }
            return null;

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                      kpkg.getName() );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( Collections.singletonList( kpkg ) );


        FactType stType = kbase.getFactType( "org.beans",
                                             "StockTick" );
        assertNotNull( stType );
        Object st = stType.newInstance();
        stType.set( st,
                    "symbol",
                    "RHT" );
        stType.set( st,
                    "price",
                    10 );


        assertEquals( "RHT",
                      stType.get( st,
                                  "symbol" ) );


        //stType.getAnnotation("author"); TODO: implement support for this


    }

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