Examples of uk.org.microbase.notification.db.data.Message

uk.org.microbase.notification.db.data.Message

Stores a single message in the notification system database. A message has a number of fields that serve the different needs of different types of consumers. The primary purpose of a message is to store application-specific content for communication among responders. This data is stored in content and binaryContent, respectively. Messages store a number of other fields for a variety of purposes, including:

Data of use to Microbase housekeeping processes - current processing states of various responders (e.g., PROCESSING, SUCCESS, ERROR states.
Provenance data, such as which responder published the data, when it was published, what user data set the message is associated with, etc.

Once published, message content is immutable except for the following:

Responder state flags that are updated according to the outcome of message processing by various responders
metaTags - user writable tags that may be added, modified or deleted at any time.

@author Keith Flanagan

  }


  protected void publishSuccessMessage(Message parent)
      throws DBException
  {
    Message msg = new Message();
    msg.setParentMessage(parent.getGuid());
    msg.setPublisherGuid(responderId);
    msg.setResultSetId(parent.getResultSetId());
    msg.setStepId(parent.getStepId());
    msg.setTopicGuid(TOPIC_MSG_PROCESSING_SUCCESS);


    messageDao.publish(msg);
  }

    ByteArrayOutputStream stackTrace = new ByteArrayOutputStream();
    PrintStream ps = new PrintStream(stackTrace);
    reason.printStackTrace(ps);
    ps.flush();


    Message msg = new Message();
    msg.setParentMessage(parent.getGuid());
    msg.setPublisherGuid(responderId);
    msg.setResultSetId(parent.getResultSetId());
    msg.setStepId(parent.getStepId());
    msg.setTopicGuid(TOPIC_MSG_PROCESSING_FAILURE);
    msg.getContent().put("Stack trace", new String(stackTrace.toByteArray()));


    messageDao.publish(msg);
  }

   * appropriate timestamp.
   */
  protected Message createMessage(
      Message parent, String topicId, String stepId, String userDescription)
  {
    Message msg = Message.createMessageFromExisting(parent);
    msg.setStepId(stepId);
    msg.setPublisherGuid(responderGuid);
    msg.setTopicGuid(topicId);
    msg.setUserDescription(userDescription);
    return msg;
  }

Examples of uk.org.microbase.notification.db.data.Message

Related Classes of uk.org.microbase.notification.db.data.Message