Esempio n. 1
0
  protected KnowledgeBase readKnowledgeBase() {
    if (knowledgeBasesCache.containsKey(task.getId())) {
      return knowledgeBasesCache.get(task.getId()).getKnowledgeBase();
    }

    // Creating agent with default KnowledgeAgentConfiguration for scanning files and directories
    KnowledgeAgent kAgent =
        KnowledgeAgentFactory.newKnowledgeAgent("Knowledge agent for task#" + task.getId());

    // Adding resources for observing by KnowledgeAgent and creating KnowledgeBase.
    // Current version of api (5.0.1) does not implement adding resources from KnowledgeBase,
    // that was mentioned in api documentation (may be bug in source code).
    // So, we use other aproach for configuring KnowledgeAgent
    // Now agent interface allowes defining resources and directories for observing
    // only through ChangeSet from Resource (usually xml config file)
    // We create needed configuration dynamically as string
    // from task parameters information
    kAgent.applyChangeSet(
        new ByteArrayResource(createChangeSetStringFromTaskParameters().getBytes()));

    // Cache agent for further usage without recreation
    knowledgeBasesCache.put(task.getId(), kAgent);
    // Start scanning services for automatical updates of cached agents
    startRulesScannerIfNeeded();

    return kAgent.getKnowledgeBase();
  }
Esempio n. 2
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 /**
  * Reading rules from Guvnor
  *
  * @return KnowledgeBase - the Guvnor knowledge Base
  */
 private static KnowledgeBase readRemoteKnowledgeBase() {
   KnowledgeAgentConfiguration kaconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
   kaconf.setProperty("drools.agent.scanDirectories", "false");
   KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent("test agent", kaconf);
   kagent.applyChangeSet(ResourceFactory.newClassPathResource("guvnor.xml"));
   return kagent.getKnowledgeBase();
 }
  public void testDroolsGeneration(int i) throws Exception {
    String filename = (i % 2 == 0) ? "/drools/stress1.drl" : "/drools/stress2.drl";
    InputStreamReader reader =
        new InputStreamReader(DroolsKnowledgeBaseTest.class.getResourceAsStream(filename));

    KnowledgeAgentConfiguration aconf = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
    aconf.setProperty("drools.agent.newInstance", "false");
    aconf.setProperty("drools.agent.monitorChangeSetEvents", "false");
    aconf.setProperty("drools.agent.scanResources", "false");

    KnowledgeBuilder builder = compileRules(reader);

    KnowledgeAgent kagent =
        KnowledgeAgentFactory.newKnowledgeAgent("Success Correspondence Agent", aconf);
    KnowledgeBase kbase = kagent.getKnowledgeBase();
    kbase.addKnowledgePackages(builder.getKnowledgePackages());
    //        kagent.monitorResourceChangeEvents(false);
    Rule rule1 = kbase.getRule("com.rosettastone.succor", "Equal rule 1");
    Rule rule5 = kbase.getRule("com.rosettastone.succor", "Equal rule 5");
    Rule rule6 = kbase.getRule("com.rosettastone.succor", "Equal rule 6");

    StatelessKnowledgeSession session = kbase.newStatelessKnowledgeSession();
    if (i % 2 == 0) {
      Assert.assertNotNull(rule1);
      Assert.assertNotNull(rule5);
      Assert.assertNull(rule6);
      testRulesFirst(session);
    } else {
      Assert.assertNull(rule1);
      Assert.assertNotNull(rule5);
      Assert.assertNotNull(rule6);
      testRulesSecond(session);
    }
  }
 @Override
 public StatefulKnowledgeSession newStatefulKnowledgeSession(
     final KnowledgeSessionConfiguration conf, final Environment env) {
   StatefulKnowledgeSession returnValue = null;
   if (this.cm == null) {
     final KnowledgeAgent ka = this.getKnowledgeAgent();
     assert ka != null;
     final KnowledgeBase kb = ka.getKnowledgeBase();
     if (kb != null) {
       throw new IllegalStateException("KnowledgeAgent.getKnowledgeBase() == null");
     }
     returnValue = kb.newStatefulKnowledgeSession(conf, env);
   } else {
     if (this.creator == null) {
       throw new IllegalStateException("this.creator == null");
     }
     try {
       returnValue =
           (StatefulKnowledgeSession)
               this.cm.allocateConnection(
                   this.creator, new StatefulKnowledgeSessionConfiguration(conf, env));
     } catch (final ResourceException kaboom) {
       throw new RuntimeDroolsException(kaboom);
     }
     if (returnValue instanceof AbstractKnowledgeSessionUserConnection
         && cm instanceof LazyAssociatableConnectionManager) {
       ((AbstractKnowledgeSessionUserConnection) returnValue)
           .setLazyAssociatableConnectionManager((LazyAssociatableConnectionManager) cm);
     }
   }
   return returnValue;
 }
  protected void addResource(StatefulKnowledgeSession kSession, Resource res) {
    KnowledgeBase kbase = kSession.getKnowledgeBase();

    ChangeSetImpl cs = new ChangeSetImpl();
    cs.setResourcesAdded(Arrays.asList(res));
    KnowledgeAgentConfiguration kaConfig = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
    kaConfig.setProperty("drools.agent.newInstance", "false");
    KnowledgeAgent kAgent = KnowledgeAgentFactory.newKnowledgeAgent(" adder ", kbase, kaConfig);
    kAgent.applyChangeSet(cs);
  }
  /**
   * Check if all fields are initialized properly.
   *
   * <p>In this class, this method will check if the servicePeriodSplitDates contains null.
   *
   * @throws OPMConfigurationException if any needed field is not initialized properly.
   * @since 1.1 OPM - Rules Engine - Scenarios Conversion 2 - Deduction Update Assembly
   */
  @Override
  @PostConstruct
  public void checkConfiguration() {
    super.checkConfiguration();
    if (this.entityManager == null) {
      throw new OPMConfigurationException("entityManager cannot be null.");
    }
    if (servicePeriodSplitDates != null) {
      for (Date date : servicePeriodSplitDates) {
        if (date == null) {
          throw new OPMConfigurationException(
              "Items in servicePeriodSplitDates list cannot be null.");
        }
      }
    }
    if (this.deductionTableTemplate == null) {
      throw new OPMConfigurationException("deductionTableTemplate cannot be null.");
    }
    try {
      // Generate deduction table
      this.generateDeductionTable();

      // Initialize knowledge agent
      KnowledgeAgentConfiguration config = KnowledgeAgentFactory.newKnowledgeAgentConfiguration();
      // We have to set the newInstance property to false so that the knowledge base changes can be
      // reflected
      config.setProperty("drools.agent.newInstance", "false");
      KnowledgeAgent knowledgeAgent =
          KnowledgeAgentFactory.newKnowledgeAgent("deductionKnowledgeAgent", config);

      // Substitute the classpath resource location with the file system resource location
      String changeSet =
          ServiceHelper.inputStreamToString(
              ResourceFactory.newClassPathResource("deduction-change-set.xml").getInputStream());
      changeSet =
          changeSet.replace(
              "classpath:rules/deduction_table.xls",
              "file:" + this.deductionTableTemplate.getDecisionTableFile());
      knowledgeAgent.applyChangeSet(
          ResourceFactory.newByteArrayResource(changeSet.getBytes("utf-8")));
      this.setKnowledgeAgent(knowledgeAgent);
    } catch (IOException e) {
      throw new OPMConfigurationException("Failed to initialize KnowledgeAgent.");
    }
  }
Esempio n. 7
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  private KnowledgeBase getKnowledgeBase() {
    if (kagent == null) {
      kagent = KnowledgeAgentSingleton.getInstance().getKagent();
    }

    //		KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
    //		kbuilder.add( ResourceFactory.newClassPathResource("xpath-rules.drl"), ResourceType.DRL);
    //		if ( kbuilder.hasErrors() ) {
    //			throw new ActionLifecycleException("Error building rules:
    // "+kbuilder.getErrors().toString());
    //		}
    //

    return kagent.getKnowledgeBase();
  }
 /** {@inheritDoc} */
 @Override
 public void destroy() {
   _kbase = null;
   _taskHandlers.clear();
   _taskHandlerModels.clear();
   _actionModels.clear();
   _messageContentInName = null;
   _messageContentOutName = null;
   _processId = null;
   if (_kagent != null) {
     try {
       _kagent.dispose();
     } finally {
       _kagent = null;
     }
   }
 }
 /** {@inheritDoc} */
 @Override
 public void init(QName qname, BPMComponentImplementationModel model) {
   _processId = model.getProcessId();
   _messageContentInName = model.getMessageContentInName();
   if (_messageContentInName == null) {
     _messageContentInName = MESSAGE_CONTENT_IN;
   }
   _messageContentOutName = model.getMessageContentOutName();
   if (_messageContentOutName == null) {
     _messageContentOutName = MESSAGE_CONTENT_OUT;
   }
   ComponentModel cm = model.getComponent();
   _targetNamespace = cm != null ? cm.getTargetNamespace() : null;
   _taskHandlerModels.addAll(model.getTaskHandlers());
   ClassLoader loader = Classes.getClassLoader(getClass());
   ResourceType.install(loader);
   ComponentImplementationConfig cic = new ComponentImplementationConfig(model, loader);
   Map<String, Object> env = new HashMap<String, Object>();
   // env.put(EnvironmentName.ENTITY_MANAGER_FACTORY,
   // Persistence.createEntityManagerFactory("org.jbpm.persistence.jpa"));
   // env.put(EnvironmentName.TRANSACTION_MANAGER,
   // AS7TransactionManagerLookup.getTransactionManager());
   cic.setEnvironmentOverrides(env);
   Properties props = new Properties();
   // props.setProperty("drools.processInstanceManagerFactory",
   // JPAProcessInstanceManagerFactory.class.getName());
   // props.setProperty("drools.processSignalManagerFactory",
   // JPASignalManagerFactory.class.getName());
   cic.setPropertiesOverrides(props);
   Resource procDef = model.getProcessDefinition();
   if (procDef.getType() == null) {
     procDef = new SimpleResource(procDef.getLocation(), "BPMN2");
   }
   if (model.isAgent()) {
     _kagent = Agents.newAgent(cic, procDef);
     _kbase = _kagent.getKnowledgeBase();
   } else {
     _kbase = Bases.newBase(cic, procDef);
   }
   _ksessionConfig = Configs.getSessionConfiguration(cic);
   _environment = Environments.getEnvironment(cic);
   _audit = model.getAudit();
   for (ProcessActionModel pam : model.getProcessActions()) {
     _actionModels.put(pam.getName(), pam);
   }
 }
 private final KnowledgeBase getKnowledgeBase() {
   final KnowledgeAgent ka = this.getKnowledgeAgent();
   assert ka != null;
   return ka.getKnowledgeBase();
 }
Esempio n. 11
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  public DiagramInfo getDiagramInfo(String processId) {
    if (kbase == null) {
      GuvnorConnectionUtils guvnorUtils = new GuvnorConnectionUtils();
      if (guvnorUtils.guvnorExists()) {
        try {
          KnowledgeAgent kagent = KnowledgeAgentFactory.newKnowledgeAgent("Guvnor default");
          kagent.applyChangeSet(ResourceFactory.newReaderResource(guvnorUtils.createChangeSet()));
          kagent.monitorResourceChangeEvents(false);
          kbase = kagent.getKnowledgeBase();
        } catch (Throwable t) {
          logger.error("Could not build kbase from Guvnor assets: " + t.getMessage());
        }
      } else {
        logger.warn("Could not connect to Guvnor.");
      }
      if (kbase == null) {
        kbase = KnowledgeBaseFactory.newKnowledgeBase();
      }
      String directory = System.getProperty("jbpm.console.directory");
      if (directory == null) {
        logger.error("jbpm.console.directory property not found");
      } else {
        File file = new File(directory);
        if (!file.exists()) {
          throw new IllegalArgumentException("Could not find " + directory);
        }
        if (!file.isDirectory()) {
          throw new IllegalArgumentException(directory + " is not a directory");
        }
        ProcessBuilderFactory.setProcessBuilderFactoryService(
            new ProcessBuilderFactoryServiceImpl());
        ProcessMarshallerFactory.setProcessMarshallerFactoryService(
            new ProcessMarshallerFactoryServiceImpl());
        ProcessRuntimeFactory.setProcessRuntimeFactoryService(
            new ProcessRuntimeFactoryServiceImpl());
        BPMN2ProcessFactory.setBPMN2ProcessProvider(new BPMN2ProcessProviderImpl());
        KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
        for (File subfile :
            file.listFiles(
                new FilenameFilter() {
                  public boolean accept(File dir, String name) {
                    return name.endsWith(".bpmn") || name.endsWith("bpmn2");
                  }
                })) {
          kbuilder.add(ResourceFactory.newFileResource(subfile), ResourceType.BPMN2);
        }
        kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
      }
    }
    Process process = kbase.getProcess(processId);
    if (process == null) {
      return null;
    }

    DiagramInfo result = new DiagramInfo();
    // TODO: diagram width and height?
    result.setWidth(932);
    result.setHeight(541);
    List<DiagramNodeInfo> nodeList = new ArrayList<DiagramNodeInfo>();
    if (process instanceof WorkflowProcess) {
      addNodesInfo(nodeList, ((WorkflowProcess) process).getNodes(), "id=");
    }
    result.setNodeList(nodeList);
    return result;
  }