org.jbpm.runtime.manager.impl
Class SingletonRuntimeManager

java.lang.Object
  org.jbpm.runtime.manager.impl.AbstractRuntimeManager
      org.jbpm.runtime.manager.impl.SingletonRuntimeManager

All Implemented Interfaces:

org.kie.api.runtime.manager.RuntimeManager, org.kie.internal.runtime.manager.InternalRuntimeManager

public class SingletonRuntimeManager
extends AbstractRuntimeManager

This RuntimeManager is backed by a "Singleton" strategy, meaning that only one RuntimeEngine instance will exist for for the given RuntimeManager instance. The RuntimeEngine will be synchronized to make sure it will work properly in multi-threaded environments. However, this might cause some performance issues due to sequential execution.
An important aspect of this manager is that it will persists it's identifier as a temporary file to keep track of the KieSession it was using to maintain its state: for example, the session state including (drools) facts, etc. The mentioned file is named as follows:
manager.getIdentifier()-jbpmSessionId.ser For example, for default named manager it will be:
default-singleton-jbpmSessionId.ser
The location of the file will be one of the following, it is resolved in below order:

• system property named: jbpm.data.dir
• system property named: jboss.server.data.dir - shall be used by default on JBoss AS
• system property named: java.io.tmpdir

In case there is a need to reset the state, simply removing of the *-jbpm.SessionId.ser from the mentioned location will do the trick.

Field Summary

Fields inherited from class org.jbpm.runtime.manager.impl.AbstractRuntimeManager

cacheManager, closed, deploymentDescriptor, engineInitEager, environment, identifier, registry, securityManager

Constructor Summary

SingletonRuntimeManager()

SingletonRuntimeManager(org.kie.api.runtime.manager.RuntimeEnvironment environment, org.kie.internal.runtime.manager.SessionFactory factory, org.kie.internal.runtime.manager.TaskServiceFactory taskServiceFactory, String identifier)

Method Summary

void	close()
void	disposeRuntimeEngine(org.kie.api.runtime.manager.RuntimeEngine runtime)
org.kie.internal.runtime.manager.SessionFactory	getFactory()
protected String	getLocation()
protected int	getPersistedSessionId(String location, String identifier) Retrieves session id from serialized file named jbpmSessionId.ser from given location.
org.kie.api.runtime.manager.RuntimeEngine	getRuntimeEngine(org.kie.api.runtime.manager.Context context)
org.kie.internal.runtime.manager.TaskServiceFactory	getTaskServiceFactory()
void	init()
protected void	persistSessionId(String location, String identifier, int ksessionId) Stores gives ksessionId in a serialized file in given location under jbpmSessionId.ser file name
void	setFactory(org.kie.internal.runtime.manager.SessionFactory factory)
void	setTaskServiceFactory(org.kie.internal.runtime.manager.TaskServiceFactory taskServiceFactory)
void	validate(org.kie.api.runtime.KieSession ksession, org.kie.api.runtime.manager.Context<?> context)

Methods inherited from class org.jbpm.runtime.manager.impl.AbstractRuntimeManager

attachManager, canDestroy, checkPermission, close, configureRuntimeOnTaskService, getCacheManager, getDeploymentDescriptor, getEnvironment, getIdentifier, getTransactionManager, hasEnvironmentEntry, isClosed, registerDisposeCallback, registerItems, removeRuntimeFromTaskService, setCacheManager, setDeploymentDescriptor, setEnvironment, setIdentifier, setSecurityManager

Methods inherited from class java.lang.Object

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

Constructor Detail

SingletonRuntimeManager

public SingletonRuntimeManager()

SingletonRuntimeManager

public SingletonRuntimeManager(org.kie.api.runtime.manager.RuntimeEnvironment environment,
                               org.kie.internal.runtime.manager.SessionFactory factory,
                               org.kie.internal.runtime.manager.TaskServiceFactory taskServiceFactory,
                               String identifier)

Method Detail

init

public void init()

Specified by:

init in class AbstractRuntimeManager

getRuntimeEngine

public org.kie.api.runtime.manager.RuntimeEngine getRuntimeEngine(org.kie.api.runtime.manager.Context context)

validate

public void validate(org.kie.api.runtime.KieSession ksession,
                     org.kie.api.runtime.manager.Context<?> context)
              throws IllegalStateException

Throws:

IllegalStateException

disposeRuntimeEngine

public void disposeRuntimeEngine(org.kie.api.runtime.manager.RuntimeEngine runtime)

close

public void close()

Specified by:

close in interface org.kie.api.runtime.manager.RuntimeManager

Overrides:

close in class AbstractRuntimeManager

getPersistedSessionId

protected int getPersistedSessionId(String location,
                                    String identifier)

Retrieves session id from serialized file named jbpmSessionId.ser from given location.

Parameters:

location - directory where jbpmSessionId.ser file should be

identifier - of the manager owning this ksessionId

Returns:

sessionId if file was found otherwise 0

persistSessionId

protected void persistSessionId(String location,
                                String identifier,
                                int ksessionId)

Stores gives ksessionId in a serialized file in given location under jbpmSessionId.ser file name

Parameters:

location - directory where serialized file should be stored

identifier - of the manager owning this ksessionId

ksessionId - value of ksessionId to be stored

getLocation

protected String getLocation()

getFactory

public org.kie.internal.runtime.manager.SessionFactory getFactory()

setFactory

public void setFactory(org.kie.internal.runtime.manager.SessionFactory factory)

getTaskServiceFactory

public org.kie.internal.runtime.manager.TaskServiceFactory getTaskServiceFactory()

setTaskServiceFactory

public void setTaskServiceFactory(org.kie.internal.runtime.manager.TaskServiceFactory taskServiceFactory)