Examples with KnowledgeBase org.drools.KnowledgeBase used on opensource projects

Example 26 with KnowledgeBase

use of org.drools.KnowledgeBase in project jBPM5-Developer-Guide by Salaboy.

the class MyFirstjBPM5ProcessTest method test.

@Test
public void test() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("firstDummyProcess.bpmn"), ResourceType.BPMN2);
    if (kbuilder.hasErrors()) {
        for (KnowledgeBuilderError error : kbuilder.getErrors()) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        fail(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    StatefulKnowledgeSession ksession = kbase.newStatefulKnowledgeSession();
    // Uncomment to see all the logs
    // KnowledgeRuntimeLoggerFactory.newConsoleLogger(ksession);
    // We have our Session, now let's play with our Dummy Process
    ProcessInstance processInstance = ksession.createProcessInstance("DummyProcess", null);
    assertEquals(processInstance.getState(), ProcessInstance.STATE_PENDING);
    ksession.startProcessInstance(processInstance.getId());
    assertEquals(processInstance.getState(), ProcessInstance.STATE_COMPLETED);
}

Example 27 with KnowledgeBase

use of org.drools.KnowledgeBase in project Activiti by Activiti.

the class RulesDeployer method deploy.

public void deploy(DeploymentEntity deployment, Map<String, Object> deploymentSettings) {
    log.debug("Processing deployment {}", deployment.getName());
    KnowledgeBuilder knowledgeBuilder = null;
    DeploymentManager deploymentManager = Context.getProcessEngineConfiguration().getDeploymentManager();
    Map<String, ResourceEntity> resources = deployment.getResources();
    for (String resourceName : resources.keySet()) {
        log.info("Processing resource {}", resourceName);
        if (resourceName.endsWith(".drl")) {
            // is only parsing .drls sufficient? what about other rule dsl's? (@see ResourceType)
            if (knowledgeBuilder == null) {
                knowledgeBuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
            }
            ResourceEntity resourceEntity = resources.get(resourceName);
            byte[] resourceBytes = resourceEntity.getBytes();
            Resource droolsResource = ResourceFactory.newByteArrayResource(resourceBytes);
            knowledgeBuilder.add(droolsResource, ResourceType.DRL);
        }
    }
    if (knowledgeBuilder != null) {
        KnowledgeBase knowledgeBase = knowledgeBuilder.newKnowledgeBase();
        deploymentManager.getKnowledgeBaseCache().add(deployment.getId(), knowledgeBase);
    }
}

Example 28 with KnowledgeBase

use of org.drools.KnowledgeBase in project Activiti by Activiti.

the class BusinessRuleTaskActivityBehavior method execute.

public void execute(ActivityExecution execution) throws Exception {
    ProcessEngineConfigurationImpl processEngineConfiguration = (ProcessEngineConfigurationImpl) execution.getEngineServices().getProcessEngineConfiguration();
    ProcessDefinition processDefinition = processEngineConfiguration.getDeploymentManager().findDeployedProcessDefinitionById(execution.getProcessDefinitionId());
    String deploymentId = processDefinition.getDeploymentId();
    KnowledgeBase knowledgeBase = RulesHelper.findKnowledgeBaseByDeploymentId(deploymentId);
    StatefulKnowledgeSession ksession = knowledgeBase.newStatefulKnowledgeSession();
    if (variablesInputExpressions != null) {
        Iterator<Expression> itVariable = variablesInputExpressions.iterator();
        while (itVariable.hasNext()) {
            Expression variable = itVariable.next();
            ksession.insert(variable.getValue(execution));
        }
    }
    if (!rulesExpressions.isEmpty()) {
        RulesAgendaFilter filter = new RulesAgendaFilter();
        Iterator<Expression> itRuleNames = rulesExpressions.iterator();
        while (itRuleNames.hasNext()) {
            Expression ruleName = itRuleNames.next();
            filter.addSuffic(ruleName.getValue(execution).toString());
        }
        filter.setAccept(!exclude);
        ksession.fireAllRules(filter);
    } else {
        ksession.fireAllRules();
    }
    Collection<Object> ruleOutputObjects = ksession.getObjects();
    if (ruleOutputObjects != null && !ruleOutputObjects.isEmpty()) {
        Collection<Object> outputVariables = new ArrayList<Object>();
        for (Object object : ruleOutputObjects) {
            outputVariables.add(object);
        }
        execution.setVariable(resultVariable, outputVariables);
    }
    ksession.dispose();
    leave(execution);
}

Example 29 with KnowledgeBase

use of org.drools.KnowledgeBase in project sling by apache.

the class AbstractUsingBundleListMojo method createKnowledgeBase.

private KnowledgeBase createKnowledgeBase(File[] files) throws MojoExecutionException {
    KnowledgeBuilder builder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    builder.add(ResourceFactory.newClassPathResource("drools-globals.drl", getClass()), ResourceType.DRL);
    for (File file : files) {
        getLog().info("Parsing rule file " + file.getAbsolutePath());
        builder.add(ResourceFactory.newFileResource(file), ResourceType.DRL);
    }
    if (builder.hasErrors()) {
        getLog().error("Rule errors:");
        for (KnowledgeBuilderError error : builder.getErrors()) {
            getLog().error(error.toString());
        }
        throw new MojoExecutionException("Unable to create rules. See log for details.");
    }
    KnowledgeBase base = KnowledgeBaseFactory.newKnowledgeBase();
    base.addKnowledgePackages(builder.getKnowledgePackages());
    return base;
}

Example 30 with KnowledgeBase

use of org.drools.KnowledgeBase in project jBPM5-Developer-Guide by Salaboy.

the class GenericWebServiceTaskTest method initializeSession.

private void initializeSession() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("HospitalInvokeInsuranceScenarioV3-data.bpmn"), ResourceType.BPMN2);
    if (kbuilder.hasErrors()) {
        KnowledgeBuilderErrors errors = kbuilder.getErrors();
        for (KnowledgeBuilderError error : errors) {
            System.out.println(">>> Error:" + error.getMessage());
        }
        throw new IllegalStateException(">>> Knowledge couldn't be parsed! ");
    }
    KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
    kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
    session = kbase.newStatefulKnowledgeSession();
    KnowledgeRuntimeLoggerFactory.newConsoleLogger(session);
    session.addEventListener(new DefaultAgendaEventListener() {

        @Override
        public void afterRuleFlowGroupActivated(org.drools.event.rule.RuleFlowGroupActivatedEvent event) {
            session.fireAllRules();
        }
    });
}