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

        TraitFactory.setMode( mode, kb );
        TraitFactory tFactory = ((AbstractRuleBase) ((KnowledgeBaseImpl) kb).getRuleBase()).getConfiguration().getComponentFactory().getTraitFactory();




        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) tFactory.getProxy( imp,
                                                               trait );
            Object proxyFields = proxy.getFields();
            Object coreTraits = imp._getTraitMap();
            Object coreProperties = imp._getDynamicProperties();

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        TraitFactory.setMode( mode, kb );


        TraitFactory tFactory = ((AbstractRuleBase) ((KnowledgeBaseImpl) kb).getRuleBase()).getConfiguration().getComponentFactory().getTraitFactory();


        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) tFactory.getProxy( imp,
                                                               trait );


            impClass.set( imp,
                          "name",

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        kb.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        TraitFactory.setMode( mode, kb );
        TraitFactory tFactory = ((AbstractRuleBase) ((KnowledgeBaseImpl) kb).getRuleBase()).getConfiguration().getComponentFactory().getTraitFactory();


        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) tFactory.getProxy( imp,
                                                               trait );


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

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        kb.addKnowledgePackages(kbuilder.getKnowledgePackages());
        TraitFactory traitBuilder = ((AbstractRuleBase) ((KnowledgeBaseImpl) kb).getRuleBase()).getConfiguration().getComponentFactory().getTraitFactory();
        TraitFactory.setMode( mode, 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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                     "\n";
        KnowledgeBase kBase = loadKnowledgeBaseFromString(drl);
        TraitFactory.setMode( mode, kBase );
        StatefulKnowledgeSession kSession = kBase.newStatefulKnowledgeSession();


        FactType parent = kBase.getFactType("org.drools.traits.test", "PosTrait");
        assertEquals(0, ((FieldDefinition) parent.getField("field0")).getIndex());
        assertEquals(1, ((FieldDefinition) parent.getField("field1")).getIndex());
        assertEquals(2, ((FieldDefinition) parent.getField("field2")).getIndex());
        FactType child = kBase.getFactType("org.drools.traits.test", "MultiInhPosTrait");
        assertEquals(0, ((FieldDefinition) child.getField("field0")).getIndex());
        assertEquals(1, ((FieldDefinition) child.getField("field1")).getIndex());
        assertEquals(2, ((FieldDefinition) child.getField("mfield1")).getIndex());
        assertEquals(3, ((FieldDefinition) child.getField("field2")).getIndex());
        assertEquals(4, ((FieldDefinition) child.getField("mfield0")).getIndex());


        drl = "" +
              "package org.drools.traits.test;\n" +
              "import org.drools.factmodel.traits.Traitable;\n" +
              "\n" +
              "global java.util.List list;\n" +
              "\n" +
              "\n" +
              "declare Pos\n" +
              "@propertyReactive\n" +
              "@Traitable\n" +
              "end\n" +
              "\n" +
              "declare trait PosTrait\n" +
              "@propertyReactive\n" +
              "    field0 : int = 100  //@position(0)\n" +
              "    field1 : int = 101  //@position(1)\n" +
              "    field2 : int = 102  @position(1)\n" +
              "end\n" +
              "\n" +
              "declare trait MultiInhPosTrait extends PosTrait\n" +
              "@propertyReactive\n" +
              "    mfield0 : int = 200 @position(0)\n" +
              "    mfield1 : int = 201 @position(2)\n" +
              "end\n" +
              "\n" +
              "\n";
        kBase = loadKnowledgeBaseFromString(drl);
        TraitFactory.setMode( mode, kBase );


        parent = kBase.getFactType("org.drools.traits.test", "PosTrait");
        assertEquals(0, ((FieldDefinition) parent.getField("field0")).getIndex());
        assertEquals(1, ((FieldDefinition) parent.getField("field2")).getIndex());
        assertEquals(2, ((FieldDefinition) parent.getField("field1")).getIndex());
        child = kBase.getFactType("org.drools.traits.test", "MultiInhPosTrait");
        assertEquals(0, ((FieldDefinition) child.getField("mfield0")).getIndex());
        assertEquals(1, ((FieldDefinition) child.getField("field2")).getIndex());
        assertEquals(2, ((FieldDefinition) child.getField("mfield1")).getIndex());
        assertEquals(3, ((FieldDefinition) child.getField("field0")).getIndex());
        assertEquals(4, ((FieldDefinition) child.getField("field1")).getIndex());


        drl = "" +
              "package org.drools.traits.test;\n" +
              "import org.drools.factmodel.traits.Traitable;\n" +
              "\n" +
              "global java.util.List list;\n" +
              "\n" +
              "\n" +
              "declare Pos\n" +
              "@propertyReactive\n" +
              "@Traitable\n" +
              "end\n" +
              "\n" +
              "declare trait PosTrait\n" +
              "@propertyReactive\n" +
              "    field0 : int = 100  @position(5)\n" +
              "    field1 : int = 101  @position(0)\n" +
              "    field2 : int = 102  @position(1)\n" +
              "end\n" +
              "\n" +
              "declare trait MultiInhPosTrait extends PosTrait\n" +
              "@propertyReactive\n" +
              "    mfield0 : int = 200 @position(0)\n" +
              "    mfield1 : int = 201 @position(1)\n" +
              "end\n" +
              "\n" +
              "\n";
        kBase = loadKnowledgeBaseFromString(drl);
        TraitFactory.setMode( mode, kBase );


        parent = kBase.getFactType("org.drools.traits.test", "PosTrait");
        assertEquals(0, ((FieldDefinition) parent.getField("field1")).getIndex());
        assertEquals(1, ((FieldDefinition) parent.getField("field2")).getIndex());
        assertEquals(2, ((FieldDefinition) parent.getField("field0")).getIndex());
        child = kBase.getFactType("org.drools.traits.test", "MultiInhPosTrait");
        assertEquals(0, ((FieldDefinition) child.getField("field1")).getIndex());
        assertEquals(1, ((FieldDefinition) child.getField("mfield0")).getIndex());
        assertEquals(2, ((FieldDefinition) child.getField("field2")).getIndex());
        assertEquals(3, ((FieldDefinition) child.getField("mfield1")).getIndex());
        assertEquals(4, ((FieldDefinition) child.getField("field0")).getIndex());


        drl = "" +
              "package org.drools.traits.test;\n" +
              "import org.drools.factmodel.traits.Traitable;\n" +
              "\n" +
              "global java.util.List list;\n" +
              "\n" +
              "\n" +
              "declare Pos\n" +
              "@propertyReactive\n" +
              "@Traitable\n" +
              "end\n" +
              "\n" +
              "declare trait PosTrait\n" +
              "@propertyReactive\n" +
              "    field0 : int = 100  //@position(5)\n" +
              "    field1 : int = 101  //@position(0)\n" +
              "    field2 : int = 102  //@position(1)\n" +
              "end\n" +
              "\n" +
              "declare trait MultiInhPosTrait extends PosTrait\n" +
              "@propertyReactive\n" +
              "    mfield0 : int = 200 //@position(0)\n" +
              "    mfield1 : int = 201 //@position(1)\n" +
              "end\n" +
              "\n" +
              "\n";
        kBase = loadKnowledgeBaseFromString(drl);
        TraitFactory.setMode( mode, kBase );


        parent = kBase.getFactType("org.drools.traits.test", "PosTrait");
        assertEquals(0, ((FieldDefinition) parent.getField("field0")).getIndex());
        assertEquals(1, ((FieldDefinition) parent.getField("field1")).getIndex());
        assertEquals(2, ((FieldDefinition) parent.getField("field2")).getIndex());
        child = kBase.getFactType("org.drools.traits.test", "MultiInhPosTrait");
        assertEquals(0, ((FieldDefinition) child.getField("field0")).getIndex());
        assertEquals(1, ((FieldDefinition) child.getField("field1")).getIndex());
        assertEquals(2, ((FieldDefinition) child.getField("field2")).getIndex());
        assertEquals(3, ((FieldDefinition) child.getField("mfield0")).getIndex());
        assertEquals(4, ((FieldDefinition) child.getField("mfield1")).getIndex());


    }

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    @Test
    public void testBoxedFieldInit() throws Exception {
        StatefulKnowledgeSession ksession = genSession("test_ExtFieldInit.drl");
        FactType test = ksession.getKnowledgeBase().getFactType("org.drools.compiler","MyBoxBean");


        Object x = test.newInstance();
        assertNotNull(x);


        assertEquals(12,test.get(x,"fieldint"));
        assertEquals(3.23,test.get(x,"fielddbl"));
        assertEquals(1.2f,test.get(x,"fieldflt"));
        short sht = 2;
        assertEquals(sht,test.get(x,"fieldsht"));
        byte byt = 1;
        assertEquals(byt,test.get(x,"fieldbyt"));
        assertEquals(true,test.get(x,"fieldbln"));
        assertEquals('x',test.get(x,"fieldchr"));
        assertEquals(9999L,test.get(x,"fieldlng"));


        System.out.println(x);


    }

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    @Test
    public void testExpressionFieldInit() throws Exception {
        StatefulKnowledgeSession ksession = genSession("test_ExtFieldInit.drl");
        FactType test = ksession.getKnowledgeBase().getFactType("org.drools.compiler","MyBoxExpressionBean");


        Object x = test.newInstance();
        assertNotNull(x);


        assertEquals("foobar",test.get(x,"f0"));
        assertEquals(-32,test.get(x,"fieldint"));
        assertEquals(4.0,test.get(x,"fielddbl"));
        assertEquals(0.5f,test.get(x,"fieldflt"));
        short sht = 6;
        assertEquals(sht,test.get(x,"fieldsht"));
        byte byt = 2;
        assertEquals(byt,test.get(x,"fieldbyt"));
        assertEquals(true,test.get(x,"fieldbln"));
        assertEquals('x',test.get(x,"fieldchr"));
        assertEquals(9999L,test.get(x,"fieldlng"));


        System.out.println(x);






        FactType test2 = ksession.getKnowledgeBase().getFactType("org.drools.compiler","MySimpleExpressionBean");


        x = test2.newInstance();
        assertNotNull(x);


        assertEquals("foobar",test2.get(x,"f0"));
        assertEquals(-32,test2.get(x,"fieldint"));
        assertEquals(4.0,test2.get(x,"fielddbl"));
        assertEquals(0.5f,test2.get(x,"fieldflt"));
        sht = 6;
        assertEquals(sht,test2.get(x,"fieldsht"));
        byt = 2;
        assertEquals(byt,test2.get(x,"fieldbyt"));
        assertEquals(true,test2.get(x,"fieldbln"));
        assertEquals('x',test2.get(x,"fieldchr"));
        assertEquals(9999L,test2.get(x,"fieldlng"));


        System.out.println(x);


    }

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        ksession.setGlobal("ans",out);


        ksession.fireAllRules();
        Object x = out.get(0);


        FactType type = kbase.getFactType("test.beans","Bean2");
        assertEquals(4, type.get( x, "fld") );
        assertEquals("xxx", type.get( x, "myField") );
        assertEquals(0.0, type.get( x, "moref") );




        assertTrue( x instanceof ArrayList );
    }

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    @Test
    public void testRedefineDefaults() throws Exception {
        //Test Base Fact Type
        StatefulKnowledgeSession ksession = genSession("test_Extends.drl");


        FactType person = ksession.getKnowledgeBase().getFactType("defaultpkg","Person");
        FactType student = ksession.getKnowledgeBase().getFactType("defaultpkg","Student");


        Object p = person.newInstance();
        Object s = student.newInstance();
        assertNotNull(p);
        assertNotNull(s);


        assertEquals( 99, person.get(p,"age") );
        assertEquals( 18, person.get(s,"age") );

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                .end();
        String drl = new DrlDumper().dump( pkgd.getDescr() );


        KnowledgeBase kb = loadKnowledgeBaseFromString( drl );


        FactType bar = kb.getFactType( "org.test", "Bar" );
        try {
            Object x = bar.newInstance();
            assertEquals( 42, bar.get( x, "val" ) );
            bar.set( x, "id", 1 );
            assertEquals( 1, bar.get( x, "id" ) );
        } catch ( Exception e ) {
            fail( e.getMessage() );
        }
    }

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