StateConverterV0 - JBOSS Portal 2.6 API 英文版文档

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org.jboss.portal.portlet.impl.state
Class StateConverterV0

java.lang.Object
  org.jboss.mx.util.JBossNotificationBroadcasterSupport
      org.jboss.system.ServiceMBeanSupport
          org.jboss.portal.jems.as.system.AbstractJBossService
              org.jboss.portal.portlet.impl.state.StateConverterV0

All Implemented Interfaces:: javax.management.MBeanRegistration, javax.management.NotificationBroadcaster, javax.management.NotificationEmitter, org.jboss.system.Service, org.jboss.system.ServiceMBean, StateConverter

public class StateConverterV0
extends AbstractJBossService
implements StateConverter

An implementation that relies on the DataInputStream and DataOutputStream to marshall and unmarshall the producer state. The marshalled value starts with a magic value and a version id to ensure future backward compatibility.

It is an important matter because a migrated producer will probably have to take care of consumers that hold a previous version of the producer state.

Version:: $Revision: 1.1 $
Author:: Julien Viet

Field Summary

private static int MAGIC_VALUE
          .

private static byte VERSION_ID
          .

Fields inherited from class org.jboss.system.ServiceMBeanSupport

log, server, SERVICE_CONTROLLER_SIG, serviceName

Fields inherited from class org.jboss.mx.util.JBossNotificationBroadcasterSupport

Fields inherited from interface org.jboss.system.ServiceMBean

CREATE_EVENT, CREATED, DESTROY_EVENT, DESTROYED, FAILED, REGISTERED, START_EVENT, STARTED, STARTING, states, STOP_EVENT, STOPPED, STOPPING, UNREGISTERED

Constructor Summary

StateConverterV0()


Method Summary

byte[] marshall(ProducerState state)
          Marshall the producer state as a byte array.

ProducerState unmarshall(byte[] marshalledState)
          Unmarshall the producer state from a byte array.

Methods inherited from class org.jboss.portal.jems.as.system.AbstractJBossService

create, destroy, getState, getStateString, start, stop

Methods inherited from class org.jboss.system.ServiceMBeanSupport

createService, destroyService, getDeploymentInfo, getLog, getName, getNextNotificationSequenceNumber, getObjectName, getServer, getServiceName, jbossInternalCreate, jbossInternalDescription, jbossInternalDestroy, jbossInternalLifecycle, jbossInternalStart, jbossInternalStop, postDeregister, postRegister, preDeregister, preRegister, startService, stopService

Methods inherited from class org.jboss.mx.util.JBossNotificationBroadcasterSupport

addNotificationListener, getNotificationInfo, handleNotification, nextNotificationSequenceNumber, removeNotificationListener, removeNotificationListener, sendNotification

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

MAGIC_VALUE

private static final int MAGIC_VALUE

See Also:: Constant Field Values

VERSION_ID

private static final byte VERSION_ID

See Also:: Constant Field Values

Constructor Detail