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org.eclipse.persistence.sessions.coordination
Class Command

java.lang.Object
org.eclipse.persistence.sessions.coordination.Command

All Implemented Interfaces:

java.io.Serializable

Direct Known Subclasses:

MergeChangeSetCommand

public abstract class Command

extends java.lang.Object

implements java.io.Serializable

Purpose: Provide an extendable framework class for a Command object that can be remotely executed.

Description: Is the root command class from which all other remotely executable commands must extend. A Command is invoked by calling propagateCommand() on a local CommandManager, and is executed on each remote service by each remote CommandManager invoking processCommand() on its local

Since:

OracleAS TopLink 10g (9.0.4)

Author:

Steven Vo

See Also:

CommandManager, CommandProcessor, Serialized Form

Field Summary

(package private) ServiceId

serviceId The unique calling card of the service that initiated the command

Constructor Summary

Command()

Method Summary

abstract void	executeWithSession(org.eclipse.persistence.internal.sessions.AbstractSession session) INTERNAL: If the CommandProcessor is a EclipseLink session then this method will get executed.
ServiceId	getServiceId() PUBLIC: Return the service identifier of the service where the command originated
boolean	isInternalCommand() INTERNAL: Determine whether this command is public or internal to EclipseLink.
void	setServiceId(ServiceId newServiceId) ADVANCED: Set the service identifier of the service where the command originated

Methods inherited from class java.lang.Object

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

Field Detail

serviceId

ServiceId serviceId

The unique calling card of the service that initiated the command

Constructor Detail

Command

public Command()

Method Detail

executeWithSession

public abstract void executeWithSession(org.eclipse.persistence.internal.sessions.AbstractSession session)

INTERNAL: If the CommandProcessor is a EclipseLink session then this method will get executed.

Parameters:

session - The session that can be used to execute the command on.

getServiceId

public ServiceId getServiceId()

PUBLIC: Return the service identifier of the service where the command originated

Returns:

The unique identifier of the sending RCM service

setServiceId

public void setServiceId(ServiceId newServiceId)

ADVANCED: Set the service identifier of the service where the command originated

Parameters:

newServiceId - The unique identifier of the sending RCM service

isInternalCommand

public boolean isInternalCommand()

INTERNAL: Determine whether this command is public or internal to EclipseLink. User commands must return false.

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