Examples of org.jbpm.client.CommandService

org.jbpm.client.CommandService
abstract extensible session facade. Developers can use this directly or extend one of the implementations with custom methods. Developers should be encouraged to use this interface as it will be kept more stable then direct usage of the API (which is still allowed). All the method implementations should be based on commands. Each of the method implementations will have a environment block. Then the command is executed and the environment is passed into the command.

    public void event(Object source, String eventName, Object info) {
      Transaction transaction = (Transaction) source;
      if (! transaction.isRolledBack()) {
        log.warning("no rollback after transactional exception handler. did you forget to rollback the transaction ?");
      }
      CommandService commandService = environmentFactory.get(CommandService.class);
      if (commandService==null) {
        throw new PvmException("environment factory doesn't have a command service");
      }
      commandService.execute(this);
    }

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  CommandService commandService;
  List<Descriptor> interceptorDescriptors;


  public Object construct(WireContext wireContext) {
    CommandService interceptedCommandService = commandService;
    if (interceptorDescriptors!=null) {
      for (int i=interceptorDescriptors.size()-1 ; i>=0; i--) {
        Descriptor descriptor = interceptorDescriptors.get(i);
        Interceptor interceptor = (Interceptor) descriptor.construct(wireContext);
        interceptor.setNext(interceptedCommandService);

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public class StandardCommandServiceBinding implements Binding {


  public Object parse(Element element, Parse parse, Parser parser) {
    CommandServiceDescriptor commandServiceDescriptor = new CommandServiceDescriptor();


    CommandService commandService = getCommandService(element, parse, parser);
    commandServiceDescriptor.setCommandService(commandService);
    
    List<Element> interceptorElements = XmlUtil.elements(element);
    if (interceptorElements!=null) {
      for (Element interceptorElement : interceptorElements) {

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public class PvmServiceDescriptor extends AbstractDescriptor {


  private static final long serialVersionUID = 1L;


  public Object construct(WireContext wireContext) {
    CommandService commandService = wireContext.get(CommandService.class);
    if (commandService==null) {
      throw new WireException("no command-service available");
    }
    return new PvmServiceImpl(commandService);
  }

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  public Object execute(Environment environment) throws Exception {
    if (userId!=null) {
      environment.setUserId(userId);
    }
    try {
      CommandService commandService = environment.get(CommandService.class);
      commandService.execute(command);
    } finally {
      if (userId!=null) {
        environment.setUserId(null);
      }
    }

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      }
    }
  }


  protected Collection<Long> acquireJobs() {
    CommandService commandService = jobExecutor.getCommandExecutor();
    Command acquireJobsCommand = jobExecutor.getAcquireJobsCommand();
    return (Collection<Long>) commandService.execute(acquireJobsCommand);
  }

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    Command acquireJobsCommand = jobExecutor.getAcquireJobsCommand();
    return (Collection<Long>) commandService.execute(acquireJobsCommand);
  }


  protected Date getNextDueDate() {
    CommandService commandService = jobExecutor.getCommandExecutor();
    Command getNextDueDate = jobExecutor.getNextDueDateCommand();
    return (Date) commandService.execute(getNextDueDate);
  }

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   * transaction. */
  protected void handleJobExecutionException(Environment environment, Job job, Throwable exception) {
    Transaction transaction = environment.getTransaction();
    transaction.setRollbackOnly();


    CommandService commandService = (CommandService) environment.get(CommandService.class);
    JobExceptionHandler jobExceptionHandler = new JobExceptionHandler(job.getDbid(), exception, commandService);
    transaction.addListener(jobExceptionHandler, Transaction.EVENT_AFTERCOMPLETION);
  }

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          Collection<Long> jobDbids = null;
          jobDbids = queue.take();
          log.fine("took job(s) "+jobDbids+" from queue");


          for (Long jobDbid: jobDbids) {
            CommandService commandService = jobExecutor.getCommandExecutor();
            commandService.execute(new ExecuteJobCommand(jobDbid));
          }
        } catch (InterruptedException e) {
          log.finest("waiting for acquired jobs got interrupted");
        } catch (Exception e) {
          log.log(Level.SEVERE, "exception in job executor thread", e);

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Related Classes of org.jbpm.client.CommandService

org.jbpm.client.impl.AsyncCommandMessage

org.jbpm.jobexecutor.DispatcherThread

org.jbpm.jobexecutor.ExecuteJobCommand

org.jbpm.jobexecutor.JobExecutorThread

org.jbpm.pvm.impl.ExceptionHandlerImpl$AfterTxCompletionListener

org.jbpm.wire.binding.StandardCommandServiceBinding

org.jbpm.wire.descriptor.CommandServiceDescriptor

org.jbpm.wire.descriptor.PvmServiceDescriptor

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