Examples with KnowledgeBuilder org.drools.builder.KnowledgeBuilder used on opensource projects

Example 26 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder 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 27 with KnowledgeBuilder

use of org.drools.builder.KnowledgeBuilder 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 28 with KnowledgeBuilder

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

the class EmergencyBedRequestBaseTest method initializeSession.

/**
 * Compiles the resources indicated by the concrete implementation of
 * this class (using {@link #getResources()} abstract method.
 * If there is any compilation error an {@link IllegalStateException} is
 * thrown.
 * After the resources are compiled, a kbase is created and populated with
 * the resulting knowledge package/s.
 * From this kbase, a new StatefulKnowledgeSession is created. The session
 * is configured with 2 listeners:
 * 1.- An Agenda event listener that will fireAllRules() every time an
 * activation happens
 * 2.- A Process event listener that will insert the process instance as
 * a Fact once a process is started.
 */
private void initializeSession() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    for (Map.Entry<Resource, ResourceType> entry : this.getResources().entrySet()) {
        kbuilder.add(entry.getKey(), entry.getValue());
    }
    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();
        }
    });
    session.addEventListener(new DefaultProcessEventListener() {

        @Override
        public void beforeProcessStarted(ProcessStartedEvent event) {
            session.insert(event.getProcessInstance());
        }
    });
}

Example 29 with KnowledgeBuilder

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

the class AsyncWorkItemWaitForCompletionTest method initializeSession.

private void initializeSession() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    // We are using a proces containing a single Task. The task is configured
    // to wait until the completion of the external system. A specialized
    // callback (CompleteWorkItemCallback) is used to complete the work item
    // after the command was executed.
    kbuilder.add(new ClassPathResource("async-work-item-wait.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();
        }
    });
    // Registers the session in SessionStoreUtil. The callback we are using
    // for the process' Task will retrieve this session later and completes
    // the work item using it.
    SessionStoreUtil.sessionCache.put("sessionId=" + session.getId(), session);
}

Example 30 with KnowledgeBuilder

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

the class HospitalInsuranceProcessExecutorTest method initializeSession.

private void initializeSession() {
    KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    kbuilder.add(new ClassPathResource("InsuranceProcessV2.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();
        }
    });
    // Registers the same generic handler for all the tasks. The handler will
    // schedule commands into the Executor Service. Each task in the process
    // is configured to use a different command.
    AsyncGenericWorkItemHandler genericHandler = new AsyncGenericWorkItemHandler(executor, session.getId());
    session.getWorkItemManager().registerWorkItemHandler("Gather Patient Data", genericHandler);
    session.getWorkItemManager().registerWorkItemHandler("Insurance Service", genericHandler);
    session.getWorkItemManager().registerWorkItemHandler("External Insurance Company Service", genericHandler);
    session.getWorkItemManager().registerWorkItemHandler("Rates Service", genericHandler);
    session.getWorkItemManager().registerWorkItemHandler("Invoice Service", genericHandler);
}