org.apache.activemq.broker.scheduler.memory

Class InMemoryJobSchedulerStore

java.lang.Object

org.apache.activemq.util.ServiceSupport

org.apache.activemq.broker.scheduler.memory.InMemoryJobSchedulerStore

All Implemented Interfaces:

JobSchedulerStore, org.apache.activemq.Service

public class InMemoryJobSchedulerStore
extends org.apache.activemq.util.ServiceSupport
implements JobSchedulerStore

An in-memory JobSchedulerStore implementation used for Brokers that have persistence disabled or when the JobSchedulerStore usage doesn't require a file or DB based store implementation allowing for better performance.

Constructor Summary

Constructors

Constructor and Description
InMemoryJobSchedulerStore()

Method Summary

Modifier and Type	Method and Description
protected void	doStart()
protected void	doStop(org.apache.activemq.util.ServiceStopper stopper)
File	getDirectory() Gets the location where the Job Scheduler will write the persistent data used to preserve and recover scheduled Jobs.
JobScheduler	getJobScheduler(String name) Returns the JobScheduler instance identified by the given name.
boolean	removeJobScheduler(String name) Removes the named JobScheduler if it exists, purging all scheduled messages assigned to it.
void	setDirectory(File directory) Sets the directory where persistent store data will be written.
long	size() The size of the current store on disk if the store utilizes a disk based store mechanism.

Methods inherited from class org.apache.activemq.util.ServiceSupport

addServiceListener, dispose, isStarted, isStopped, isStopping, postStop, preStart, removeServiceListener, start, stop

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.apache.activemq.Service

start, stop

Constructor Detail

InMemoryJobSchedulerStore

public InMemoryJobSchedulerStore()

Method Detail

doStop

protected void doStop(org.apache.activemq.util.ServiceStopper stopper)
               throws Exception

Specified by:

doStop in class org.apache.activemq.util.ServiceSupport

Throws:

Exception

doStart

protected void doStart()
                throws Exception

Specified by:

doStart in class org.apache.activemq.util.ServiceSupport

Throws:

Exception

getJobScheduler

public JobScheduler getJobScheduler(String name)
                             throws Exception

Description copied from interface: JobSchedulerStore

Returns the JobScheduler instance identified by the given name.

Specified by:

getJobScheduler in interface JobSchedulerStore

Parameters:

name - the name of the JobScheduler instance to lookup.

Returns:

the named JobScheduler or null if none exists with the given name.

Throws:

Exception - if an error occurs while loading the named scheduler.

removeJobScheduler

public boolean removeJobScheduler(String name)
                           throws Exception

Description copied from interface: JobSchedulerStore

Removes the named JobScheduler if it exists, purging all scheduled messages assigned to it.

Specified by:

removeJobScheduler in interface JobSchedulerStore

Parameters:

name - the name of the scheduler instance to remove.

Returns:

true if there was a scheduler with the given name to remove.

Throws:

Exception - if an error occurs while removing the scheduler.

size

public long size()

Description copied from interface: JobSchedulerStore

The size of the current store on disk if the store utilizes a disk based store mechanism.

Specified by:

size in interface JobSchedulerStore

Returns:

the current store size on disk.

getDirectory

public File getDirectory()

Description copied from interface: JobSchedulerStore

Gets the location where the Job Scheduler will write the persistent data used to preserve and recover scheduled Jobs. If the scheduler implementation does not utilize a file system based store this method returns null.

Specified by:

getDirectory in interface JobSchedulerStore

Returns:

the directory where persistent store data is written.

setDirectory

public void setDirectory(File directory)

Description copied from interface: JobSchedulerStore

Sets the directory where persistent store data will be written. This method must be called before the scheduler store is started to have any effect.

Specified by:

setDirectory in interface JobSchedulerStore

Parameters:

directory - The directory where the job scheduler store is to be located.