Examples of org.drools.builder.KnowledgeBuilder

org.drools.builder.KnowledgeBuilder

es.drl" ), ResourceType.DRL); assertFalse( kbuilder.hasErrors() ); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();

Simple example showing how to build a KnowledgeBase from an XLS decision table resource.

 KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); DecisionTableConfiguration dtconf = KnowledgeBuilderFactory.newDecisionTableConfiguration(); dtconf.setInputType( DecisionTableInputType.XLS ); dtconf.setWorksheetName( "Tables_2" ); kbuilder.add( ResourceFactory.newUrlResource( "file://IntegrationExampleTest.xls" ), ResourceType.DTABLE, dtconf ); assertFalse( kbuilder.hasErrors() ); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();

Simple example showing how to build a KnowledgeBase from an DRF flow resource.

 KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder(); kbuilder.add( ResourceFactory.newUrlResource( "file://myflow.rf" ), ResourceType.DRF); assertFalse( kbuilder.hasErrors() ); KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();

If there are errors a simple toString can print the errors

 if ( kbuilder.hasErrors() ) { log.exception( kbuilder.getErrors().toString() ) }

The KnowledgeBuilder can also be built from a configuration using the XML change-set format and the ResourceType.CHANGE_SET value. While change-set supports add, remove, and modify as elements. KnowledgeBuilder will only process add. If the resource element provided points to a directory, all files found in that directory will be added. Currently the knowledge type is not derived from the file extension and must be explicitly set in the XML for the resource. It is expected that all resources in a directory given resource are of the specified type.

 <change-set xmlns='http://drools.org/drools-5.0/change-set' xmlns:xs='http://www.w3.org/2001/XMLSchema-instance' xs:schemaLocation='drools-change-set-5.0.xsd' > <add> <resource source='http:org/domain/myrules.drl' type='DRL' /> <resource source='classpath:data/IntegrationExampleTest.xls' type="DTABLE"> <decisiontable-conf input-type="XLS" worksheet-name="Tables_2" /> </resource> <resource source='file:org/drools/decisiontable/myflow.drf' type='DRF' /> </add> </change-set>

 KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent( "test agent", // the name of the agent kaconf ); kagent.applyChangeSet( ResourceFactory.newUrlResource( url ) ); // resource to the change-set xml for the resources to add

                      processInstance.getVariable( "Number" ) );
    }


    @Test
    public void testAbortWorkItem() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();


        String str = "";
        str += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        str += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        str += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        str += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        str += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.actions\" package-name=\"org.drools\" version=\"1\" >\n";
        str += "\n";
        str += "  <header>\n";
        str += "    <variables>\n";
        str += "      <variable name=\"UserName\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        <value>John Doe</value>\n";
        str += "      </variable>\n";
        str += "      <variable name=\"Person\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"org.drools.camel.testdomain.Person\" />\n";
        str += "      </variable>\n";
        str += "      <variable name=\"MyObject\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"java.lang.Object\" />\n";
        str += "      </variable>\n";
        str += "      <variable name=\"Number\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.IntegerDataType\" />\n";
        str += "      </variable>\n";
        str += "    </variables>\n";
        str += "  </header>\n";
        str += "\n";
        str += "  <nodes>\n";
        str += "    <start id=\"1\" name=\"Start\" />\n";
        str += "    <workItem id=\"2\" name=\"HumanTask\" >\n";
        str += "      <work name=\"Human Task\" >\n";
        str += "        <parameter name=\"ActorId\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>#{UserName}</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Content\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>#{Person.name}</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"TaskName\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>Do something</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Priority\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Comment\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Attachment\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"java.lang.Object\" />\n";
        str += "        </parameter>\n";
        str += "      </work>\n";
        str += "      <mapping type=\"in\" from=\"MyObject\" to=\"Attachment\" />";
        str += "      <mapping type=\"in\" from=\"Person.name\" to=\"Comment\" />";
        str += "      <mapping type=\"out\" from=\"Result\" to=\"MyObject\" />";
        str += "      <mapping type=\"out\" from=\"Result.length()\" to=\"Number\" />";
        str += "    </workItem>\n";
        str += "    <end id=\"3\" name=\"End\" />\n";
        str += "  </nodes>\n";
        str += "\n";
        str += "  <connections>\n";
        str += "    <connection from=\"1\" to=\"2\" />\n";
        str += "    <connection from=\"2\" to=\"3\" />\n";
        str += "  </connections>\n";
        str += "\n";
        str += "</process>";


        Reader source = new StringReader( str );
        kbuilder.add( ResourceFactory.newReaderResource( source ),
                      ResourceType.DRF );


        Collection<KnowledgePackage> kpkgs = kbuilder.getKnowledgePackages();
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kpkgs );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
        setExec( ksession );

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    }


    @Override
    protected StatefulKnowledgeSession registerKnowledgeRuntime(String identifier,
                                                                String rule) {
        KnowledgeBuilder kbuilder = node.get( KnowledgeBuilderFactoryService.class ).newKnowledgeBuilder();


        Options xjcOpts = new Options();
        xjcOpts.setSchemaLanguage( Language.XMLSCHEMA );


        try {
            KnowledgeBuilderHelper.addXsdModel( ResourceFactory.newClassPathResource( "person.xsd",
                                                                                      getClass() ),
                                                kbuilder,
                                                xjcOpts,
                                                "xsd" );
        } catch ( IOException e ) {
            LOG.error( "Errors while adding xsd model. ",
                       kbuilder.getErrors() );
        }


        assertFalse( kbuilder.hasErrors() );


        if ( rule != null && rule.length() > 0 ) {
            kbuilder.add( ResourceFactory.newByteArrayResource( rule.getBytes() ),
                          ResourceType.DRL );


            if ( kbuilder.hasErrors() ) {
                LOG.info( "Errors while adding rule. ",
                          kbuilder.getErrors() );
            }
        }


        assertFalse( kbuilder.hasErrors() );


        KnowledgeBase kbase = node.get( KnowledgeBaseFactoryService.class ).newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );
        classLoader = ((InternalRuleBase) ((KnowledgeBaseImpl) kbase).getRuleBase()).getRootClassLoader();


        StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
        node.set( identifier,
                  session );

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    }


    @Override
    protected StatefulKnowledgeSession registerKnowledgeRuntime(String identifier,
                                                                String rule) {
        KnowledgeBuilder kbuilder = node.get( KnowledgeBuilderFactoryService.class ).newKnowledgeBuilder();


        Options xjcOpts = new Options();
        xjcOpts.setSchemaLanguage( Language.XMLSCHEMA );


        JaxbConfiguration jaxbConfiguration = KnowledgeBuilderFactory.newJaxbConfiguration( xjcOpts,
                                                                                            "xsd" );


        kbuilder.add( ResourceFactory.newClassPathResource( "person.xsd",
                                                            getClass() ),
                      ResourceType.XSD,
                      jaxbConfiguration );


        if ( rule != null && rule.length() > 0 ) {
            kbuilder.add( ResourceFactory.newByteArrayResource( rule.getBytes() ),
                          ResourceType.DRL );


            if ( kbuilder.hasErrors() ) {
                LOG.info( "Errors while adding rule. ",
                          kbuilder.getErrors() );
            }
        }


        String process1 = "";
        process1 += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        process1 += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        process1 += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        process1 += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        process1 += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.actions\" package-name=\"org.drools\" version=\"1\" >\n";
        process1 += "\n";
        process1 += "  <header>\n";
        process1 += "    <imports>\n";
        process1 += "      <import name=\"org.drools.camel.testdomain.Person\" />\n";
        process1 += "    </imports>\n";
        process1 += "    <globals>\n";
        process1 += "      <global identifier=\"list\" type=\"java.util.List\" />\n";
        process1 += "    </globals>\n";
        process1 += "    <variables>\n";
        process1 += "      <variable name=\"person\" >\n";
        process1 += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"Person\" />\n";
        process1 += "      </variable>\n";
        process1 += "    </variables>\n";
        process1 += "  </header>\n";
        process1 += "\n";
        process1 += "  <nodes>\n";
        process1 += "    <start id=\"1\" name=\"Start\" />\n";
        process1 += "    <actionNode id=\"2\" name=\"MyActionNode\" >\n";
        process1 += "      <action type=\"expression\" dialect=\"mvel\" >System.out.println(\"Triggered\");\n";
        //        process1 += "list.add(person.name);\n";
        process1 += "</action>\n";
        process1 += "    </actionNode>\n";
        process1 += "    <end id=\"3\" name=\"End\" />\n";
        process1 += "  </nodes>\n";
        process1 += "\n";
        process1 += "  <connections>\n";
        process1 += "    <connection from=\"1\" to=\"2\" />\n";
        process1 += "    <connection from=\"2\" to=\"3\" />\n";
        process1 += "  </connections>\n" + "\n";
        process1 += "</process>";


        kbuilder.add( ResourceFactory.newByteArrayResource( process1.getBytes() ),
                      ResourceType.DRF );


        if ( kbuilder.hasErrors() ) {
            System.out.println( "Errors while adding process rule 1. " + kbuilder.getErrors() );
        }


        assertFalse( kbuilder.hasErrors() );


        String process2 = "";
        process2 += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        process2 += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        process2 += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        process2 += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        process2 += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.event\" package-name=\"org.drools\" version=\"1\" >\n";
        process2 += "\n";
        process2 += "  <header>\n";
        process2 += "    <variables>\n";
        process2 += "      <variable name=\"MyVar\" >\n";
        process2 += "        <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        process2 += "        <value>SomeText</value>\n";
        process2 += "      </variable>\n";
        process2 += "    </variables>\n";
        process2 += "  </header>\n";
        process2 += "\n";
        process2 += "  <nodes>\n";
        process2 += "    <start id=\"1\" name=\"Start\" />\n";
        process2 += "    <eventNode id=\"2\" name=\"Event\" variableName=\"MyVar\" >\n";
        process2 += "      <eventFilters>\n";
        process2 += "        <eventFilter type=\"eventType\" eventType=\"MyEvent\" />\n";
        process2 += "      </eventFilters>\n";
        process2 += "    </eventNode>\n";
        process2 += "    <join id=\"3\" name=\"Join\" type=\"1\" />\n";
        process2 += "    <end id=\"4\" name=\"End\" />\n";
        process2 += "  </nodes>\n";
        process2 += "\n";
        process2 += "  <connections>\n";
        process2 += "    <connection from=\"1\" to=\"3\" />\n";
        process2 += "    <connection from=\"2\" to=\"3\" />\n";
        process2 += "    <connection from=\"3\" to=\"4\" />\n";
        process2 += "  </connections>\n";
        process2 += "\n";
        process2 += "</process>";


        kbuilder.add( ResourceFactory.newByteArrayResource( process2.getBytes() ),
                      ResourceType.DRF );


        if ( kbuilder.hasErrors() ) {
            LOG.info( "Errors while adding process rule 2. ",
                      kbuilder.getErrors() );
        }


        assertFalse( kbuilder.hasErrors() );


        KnowledgeBase kbase = node.get( KnowledgeBaseFactoryService.class ).newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
        node.set( identifier,
                                                                  session );
        return session;

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    private StatefulKnowledgeSession ksession;
    private ProducerTemplate template;


    @Before
    public void setUp() throws Exception {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        ksession = kbuilder.newKnowledgeBase().newStatefulKnowledgeSession();
        initializeTemplate(ksession);
    }

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    /**
     * create empty knowledge base
     */
    private KnowledgeBase getKbase() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        kbuilder.add(ResourceFactory.newClassPathResource("getOlder.drl",getClass()), ResourceType.DRL);
        return kbuilder.newKnowledgeBase();
    }

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    }


    @Override
    protected StatefulKnowledgeSession registerKnowledgeRuntime(String identifier,
                                                                String rule) {
        KnowledgeBuilder kbuilder = node.get( KnowledgeBuilderFactoryService.class ).newKnowledgeBuilder();


        Options xjcOpts = new Options();
        xjcOpts.setSchemaLanguage( Language.XMLSCHEMA );


        try {
            KnowledgeBuilderHelper.addXsdModel( ResourceFactory.newClassPathResource( "person.xsd",
                                                                                      getClass() ),
                                                kbuilder,
                                                xjcOpts,
                                                "xsd" );
        } catch ( IOException e ) {
            LOG.error( "Errors while adding xsd model. ",
                       kbuilder.getErrors() );
        }


        assertFalse( kbuilder.hasErrors() );


        if ( rule != null && rule.length() > 0 ) {
            kbuilder.add( ResourceFactory.newByteArrayResource( rule.getBytes() ),
                          ResourceType.DRL );


            if ( kbuilder.hasErrors() ) {
                LOG.info( "Errors while adding rule. ",
                          kbuilder.getErrors() );
            }
        }


        assertFalse( kbuilder.hasErrors() );


        KnowledgeBase kbase = node.get( KnowledgeBaseFactoryService.class ).newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatefulKnowledgeSession session = kbase.newStatefulKnowledgeSession();
        node.set( identifier,
                  session );
        return session;

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    }


    @Test
    public void testProcess() throws SAXException,
                             IOException {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();


        String str = "";
        str += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        str += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        str += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        str += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        str += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.actions\" package-name=\"org.drools\" version=\"1\" >\n";
        str += "\n";
        str += "  <header>\n";
        str += "    <imports>\n";
        str += "      <import name=\"org.drools.camel.testdomain.TestVariable\" />\n";
        str += "    </imports>\n";
        str += "    <globals>\n";
        str += "      <global identifier=\"list\" type=\"java.util.List\" />\n";
        str += "    </globals>\n";
        str += "    <variables>\n";
        str += "      <variable name=\"person\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"TestVariable\" />\n";
        str += "      </variable>\n";
        str += "    </variables>\n";
        str += "  </header>\n";
        str += "\n";
        str += "  <nodes>\n";
        str += "    <start id=\"1\" name=\"Start\" />\n";
        str += "    <actionNode id=\"2\" name=\"MyActionNode\" >\n";
        str += "      <action type=\"expression\" dialect=\"mvel\" >System.out.println(\"Triggered\");\n";
        str += "list.add(person.name);\n";
        str += "</action>\n";
        str += "    </actionNode>\n";
        str += "    <end id=\"3\" name=\"End\" />\n";
        str += "  </nodes>\n";
        str += "\n";
        str += "  <connections>\n";
        str += "    <connection from=\"1\" to=\"2\" />\n";
        str += "    <connection from=\"2\" to=\"3\" />\n";
        str += "  </connections>\n" + "\n";
        str += "</process>";


        Reader source = new StringReader( str );
        kbuilder.add( ResourceFactory.newReaderResource( source ),
                      ResourceType.DRF );
        if ( kbuilder.hasErrors() ) {
            fail( kbuilder.getErrors().toString() );
        }


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatelessKnowledgeSession ksession = kbase.newStatelessKnowledgeSession();
        setExec( ksession );
        List<String> list = new ArrayList<String>();
        ksession.setGlobal( "list",

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                        outXml );
    }


    @Test
    public void testProcessInstanceSignalEvent() throws Exception {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        String str = "";
        str += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        str += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        str += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        str += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        str += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.event\" package-name=\"org.drools\" version=\"1\" >\n";
        str += "\n";
        str += "  <header>\n";
        str += "    <variables>\n";
        str += "      <variable name=\"MyVar\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        <value>SomeText</value>\n";
        str += "      </variable>\n";
        str += "    </variables>\n";
        str += "  </header>\n";
        str += "\n";
        str += "  <nodes>\n";
        str += "    <start id=\"1\" name=\"Start\" />\n";
        str += "    <eventNode id=\"2\" name=\"Event\" variableName=\"MyVar\" >\n";
        str += "      <eventFilters>\n";
        str += "        <eventFilter type=\"eventType\" eventType=\"MyEvent\" />\n";
        str += "      </eventFilters>\n";
        str += "    </eventNode>\n";
        str += "    <join id=\"3\" name=\"Join\" type=\"1\" />\n";
        str += "    <end id=\"4\" name=\"End\" />\n";
        str += "  </nodes>\n";
        str += "\n";
        str += "  <connections>\n";
        str += "    <connection from=\"1\" to=\"3\" />\n";
        str += "    <connection from=\"2\" to=\"3\" />\n";
        str += "    <connection from=\"3\" to=\"4\" />\n";
        str += "  </connections>\n";
        str += "\n";
        str += "</process>";


        kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ),
                      ResourceType.DRF );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        ProcessInstance processInstance = ksession.startProcess( "org.drools.event" );
        assertEquals( ProcessInstance.STATE_ACTIVE,

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                      ((VariableScopeInstance) ((org.jbpm.process.instance.ProcessInstance) processInstance).getContextInstance( VariableScope.VARIABLE_SCOPE )).getVariable( "MyVar" ) );
    }


    @Test
    public void testProcessRuntimeSignalEvent() throws Exception {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        String str = "";
        str += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        str += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        str += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        str += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        str += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.event\" package-name=\"org.drools\" version=\"1\" >\n";
        str += "\n";
        str += "  <header>\n";
        str += "    <variables>\n";
        str += "      <variable name=\"MyVar\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        <value>SomeText</value>\n";
        str += "      </variable>\n";
        str += "    </variables>\n";
        str += "  </header>\n";
        str += "\n";
        str += "  <nodes>\n";
        str += "    <start id=\"1\" name=\"Start\" />\n";
        str += "    <eventNode id=\"2\" name=\"Event\" scope=\"external\" variableName=\"MyVar\" >\n";
        str += "      <eventFilters>\n";
        str += "        <eventFilter type=\"eventType\" eventType=\"MyEvent\" />\n";
        str += "      </eventFilters>\n";
        str += "    </eventNode>\n";
        str += "    <join id=\"3\" name=\"Join\" type=\"1\" />\n";
        str += "    <end id=\"4\" name=\"End\" />\n";
        str += "  </nodes>\n";
        str += "\n";
        str += "  <connections>\n";
        str += "    <connection from=\"1\" to=\"3\" />\n";
        str += "    <connection from=\"2\" to=\"3\" />\n";
        str += "    <connection from=\"3\" to=\"4\" />\n";
        str += "  </connections>\n";
        str += "\n";
        str += "</process>";


        kbuilder.add( ResourceFactory.newByteArrayResource( str.getBytes() ),
                      ResourceType.DRF );


        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kbuilder.getKnowledgePackages() );


        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        ProcessInstance processInstance = ksession.startProcess( "org.drools.event" );
        assertEquals( ProcessInstance.STATE_ACTIVE,

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                      ((VariableScopeInstance) ((org.jbpm.process.instance.ProcessInstance) processInstance).getContextInstance( VariableScope.VARIABLE_SCOPE )).getVariable( "MyVar" ) );
    }


    @Test
    public void testCompleteWorkItem() {
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();


        String str = "";
        str += "<?xml version=\"1.0\" encoding=\"UTF-8\"?>\n";
        str += "<process xmlns=\"http://drools.org/drools-5.0/process\"\n";
        str += "         xmlns:xs=\"http://www.w3.org/2001/XMLSchema-instance\"\n";
        str += "         xs:schemaLocation=\"http://drools.org/drools-5.0/process drools-processes-5.0.xsd\"\n";
        str += "         type=\"RuleFlow\" name=\"flow\" id=\"org.drools.actions\" package-name=\"org.drools\" version=\"1\" >\n";
        str += "\n";
        str += "  <header>\n";
        str += "    <variables>\n";
        str += "      <variable name=\"UserName\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        <value>John Doe</value>\n";
        str += "      </variable>\n";
        str += "      <variable name=\"Person\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"org.drools.camel.testdomain.Person\" />\n";
        str += "      </variable>\n";
        str += "      <variable name=\"MyObject\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"java.lang.Object\" />\n";
        str += "      </variable>\n";
        str += "      <variable name=\"Number\" >\n";
        str += "        <type name=\"org.drools.process.core.datatype.impl.type.IntegerDataType\" />\n";
        str += "      </variable>\n";
        str += "    </variables>\n";
        str += "  </header>\n";
        str += "\n";
        str += "  <nodes>\n";
        str += "    <start id=\"1\" name=\"Start\" />\n";
        str += "    <workItem id=\"2\" name=\"HumanTask\" >\n";
        str += "      <work name=\"Human Task\" >\n";
        str += "        <parameter name=\"ActorId\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>#{UserName}</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Content\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>#{Person.name}</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"TaskName\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "          <value>Do something</value>\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Priority\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Comment\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.StringDataType\" />\n";
        str += "        </parameter>\n";
        str += "        <parameter name=\"Attachment\" >\n";
        str += "          <type name=\"org.drools.process.core.datatype.impl.type.ObjectDataType\" className=\"java.lang.Object\" />\n";
        str += "        </parameter>\n";
        str += "      </work>\n";
        str += "      <mapping type=\"in\" from=\"MyObject\" to=\"Attachment\" />";
        str += "      <mapping type=\"in\" from=\"Person.name\" to=\"Comment\" />";
        str += "      <mapping type=\"out\" from=\"Result\" to=\"MyObject\" />";
        str += "      <mapping type=\"out\" from=\"Result.length()\" to=\"Number\" />";
        str += "    </workItem>\n";
        str += "    <end id=\"3\" name=\"End\" />\n";
        str += "  </nodes>\n";
        str += "\n";
        str += "  <connections>\n";
        str += "    <connection from=\"1\" to=\"2\" />\n";
        str += "    <connection from=\"2\" to=\"3\" />\n";
        str += "  </connections>\n";
        str += "\n";
        str += "</process>";


        Reader source = new StringReader( str );
        kbuilder.add( ResourceFactory.newReaderResource( source ),
                      ResourceType.DRF );


        Collection<KnowledgePackage> kpkgs = kbuilder.getKnowledgePackages();
        KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
        kbase.addKnowledgePackages( kpkgs );
        StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();


        TestWorkItemHandler handler = new TestWorkItemHandler();

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