org.springframework.scheduling.quartz

Class SchedulerFactoryBean

java.lang.Object

org.springframework.scheduling.quartz.SchedulerAccessor

org.springframework.scheduling.quartz.SchedulerFactoryBean

All Implemented Interfaces:

Aware, BeanNameAware, DisposableBean, FactoryBean<Scheduler>, InitializingBean, ApplicationContextAware, Lifecycle, Phased, ResourceLoaderAware, SmartLifecycle

public class SchedulerFactoryBean
extends SchedulerAccessor
implements FactoryBean<Scheduler>, BeanNameAware, ApplicationContextAware, InitializingBean, DisposableBean, SmartLifecycle

FactoryBean that creates and configures a Quartz org.quartz.Scheduler, manages its lifecycle as part of the Spring application context, and exposes the Scheduler as bean reference for dependency injection.

Allows registration of JobDetails, Calendars and Triggers, automatically starting the scheduler on initialization and shutting it down on destruction. In scenarios that just require static registration of jobs at startup, there is no need to access the Scheduler instance itself in application code.

For dynamic registration of jobs at runtime, use a bean reference to this SchedulerFactoryBean to get direct access to the Quartz Scheduler (org.quartz.Scheduler). This allows you to create new jobs and triggers, and also to control and monitor the entire Scheduler.

Note that Quartz instantiates a new Job for each execution, in contrast to Timer which uses a TimerTask instance that is shared between repeated executions. Just JobDetail descriptors are shared.

When using persistent jobs, it is strongly recommended to perform all operations on the Scheduler within Spring-managed (or plain JTA) transactions. Else, database locking will not properly work and might even break. (See setDataSource javadoc for details.)

The preferred way to achieve transactional execution is to demarcate declarative transactions at the business facade level, which will automatically apply to Scheduler operations performed within those scopes. Alternatively, you may add transactional advice for the Scheduler itself.

Compatible with Quartz 2.1.4 and higher, as of Spring 4.1.

Since:

18.02.2004

Author:

Juergen Hoeller

See Also:

setDataSource(javax.sql.DataSource), org.quartz.Scheduler, org.quartz.SchedulerFactory, org.quartz.impl.StdSchedulerFactory, TransactionProxyFactoryBean

Field Summary

Fields

Modifier and Type	Field and Description
private ApplicationContext	applicationContext
private java.lang.String	applicationContextSchedulerContextKey
private boolean	autoStartup
private Resource	configLocation
private static java.lang.ThreadLocal<javax.sql.DataSource>	configTimeDataSourceHolder
private static java.lang.ThreadLocal<javax.sql.DataSource>	configTimeNonTransactionalDataSourceHolder
private static java.lang.ThreadLocal<ResourceLoader>	configTimeResourceLoaderHolder
private static java.lang.ThreadLocal<java.util.concurrent.Executor>	configTimeTaskExecutorHolder
private javax.sql.DataSource	dataSource
static int	DEFAULT_THREAD_COUNT
private boolean	exposeSchedulerInRepository
private JobFactory	jobFactory
private boolean	jobFactorySet
private javax.sql.DataSource	nonTransactionalDataSource
private int	phase
static java.lang.String	PROP_THREAD_COUNT
private java.util.Properties	quartzProperties
private Scheduler	scheduler
private java.util.Map<java.lang.String,?>	schedulerContextMap
private java.lang.Class<? extends SchedulerFactory>	schedulerFactoryClass
private java.lang.String	schedulerName
private int	startupDelay
private java.util.concurrent.Executor	taskExecutor
private boolean	waitForJobsToCompleteOnShutdown

Fields inherited from class org.springframework.scheduling.quartz.SchedulerAccessor

logger, resourceLoader

Constructor Summary

Constructors

Constructor and Description
SchedulerFactoryBean()

Method Summary

Modifier and Type	Method and Description
void	afterPropertiesSet() Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
protected Scheduler	createScheduler(SchedulerFactory schedulerFactory, java.lang.String schedulerName) Create the Scheduler instance for the given factory and scheduler name.
void	destroy() Shut down the Quartz scheduler on bean factory shutdown, stopping all scheduled jobs.
static javax.sql.DataSource	getConfigTimeDataSource() Return the DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.
static javax.sql.DataSource	getConfigTimeNonTransactionalDataSource() Return the non-transactional DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.
static ResourceLoader	getConfigTimeResourceLoader() Return the ResourceLoader for the currently configured Quartz Scheduler, to be used by ResourceLoaderClassLoadHelper.
static java.util.concurrent.Executor	getConfigTimeTaskExecutor() Return the TaskExecutor for the currently configured Quartz Scheduler, to be used by LocalTaskExecutorThreadPool.
Scheduler	getObject() Return an instance (possibly shared or independent) of the object managed by this factory.
java.lang.Class<? extends Scheduler>	getObjectType() Return the type of object that this FactoryBean creates, or null if not known in advance.
int	getPhase() Return the phase in which this scheduler will be started and stopped.
Scheduler	getScheduler() Template method that determines the Scheduler to operate on.
private void	initSchedulerFactory(SchedulerFactory schedulerFactory) Load and/or apply Quartz properties to the given SchedulerFactory.
boolean	isAutoStartup() Return whether this scheduler is configured for auto-startup.
boolean	isRunning() Check whether this component is currently running.
boolean	isSingleton() Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?
private void	populateSchedulerContext() Expose the specified context attributes and/or the current ApplicationContext in the Quartz SchedulerContext.
void	setApplicationContext(ApplicationContext applicationContext) Set the ApplicationContext that this object runs in.
void	setApplicationContextSchedulerContextKey(java.lang.String applicationContextSchedulerContextKey) Set the key of an ApplicationContext reference to expose in the SchedulerContext, for example "applicationContext".
void	setAutoStartup(boolean autoStartup) Set whether to automatically start the scheduler after initialization.
void	setBeanName(java.lang.String name) Set the name of the bean in the bean factory that created this bean.
void	setConfigLocation(Resource configLocation) Set the location of the Quartz properties config file, for example as classpath resource "classpath:quartz.properties".
void	setDataSource(javax.sql.DataSource dataSource) Set the default DataSource to be used by the Scheduler.
void	setExposeSchedulerInRepository(boolean exposeSchedulerInRepository) Set whether to expose the Spring-managed Scheduler instance in the Quartz SchedulerRepository.
void	setJobFactory(JobFactory jobFactory) Set the Quartz JobFactory to use for this Scheduler.
void	setNonTransactionalDataSource(javax.sql.DataSource nonTransactionalDataSource) Set the DataSource to be used by the Scheduler for non-transactional access.
void	setPhase(int phase) Specify the phase in which this scheduler should be started and stopped.
void	setQuartzProperties(java.util.Properties quartzProperties) Set Quartz properties, like "org.quartz.threadPool.class".
void	setSchedulerContextAsMap(java.util.Map<java.lang.String,?> schedulerContextAsMap) Register objects in the Scheduler context via a given Map.
void	setSchedulerFactoryClass(java.lang.Class<? extends SchedulerFactory> schedulerFactoryClass) Set the Quartz SchedulerFactory implementation to use.
void	setSchedulerName(java.lang.String schedulerName) Set the name of the Scheduler to create via the SchedulerFactory.
void	setStartupDelay(int startupDelay) Set the number of seconds to wait after initialization before starting the scheduler asynchronously.
void	setTaskExecutor(java.util.concurrent.Executor taskExecutor) Set the Spring TaskExecutor to use as Quartz backend.
void	setWaitForJobsToCompleteOnShutdown(boolean waitForJobsToCompleteOnShutdown) Set whether to wait for running jobs to complete on shutdown.
void	start() Start this component.
protected void	startScheduler(Scheduler scheduler, int startupDelay) Start the Quartz Scheduler, respecting the "startupDelay" setting.
void	stop() Stop this component, typically in a synchronous fashion, such that the component is fully stopped upon return of this method.
void	stop(java.lang.Runnable callback) Indicates that a Lifecycle component must stop if it is currently running.

Methods inherited from class org.springframework.scheduling.quartz.SchedulerAccessor

registerJobsAndTriggers, registerListeners, setCalendars, setGlobalJobListeners, setGlobalTriggerListeners, setJobDetails, setJobSchedulingDataLocation, setJobSchedulingDataLocations, setOverwriteExistingJobs, setResourceLoader, setSchedulerListeners, setTransactionManager, setTriggers

Methods inherited from class java.lang.Object

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

Field Detail

PROP_THREAD_COUNT

public static final java.lang.String PROP_THREAD_COUNT

See Also:

Constant Field Values

DEFAULT_THREAD_COUNT

public static final int DEFAULT_THREAD_COUNT

See Also:

Constant Field Values

configTimeResourceLoaderHolder

private static final java.lang.ThreadLocal<ResourceLoader> configTimeResourceLoaderHolder

configTimeTaskExecutorHolder

private static final java.lang.ThreadLocal<java.util.concurrent.Executor> configTimeTaskExecutorHolder

configTimeDataSourceHolder

private static final java.lang.ThreadLocal<javax.sql.DataSource> configTimeDataSourceHolder

configTimeNonTransactionalDataSourceHolder

private static final java.lang.ThreadLocal<javax.sql.DataSource> configTimeNonTransactionalDataSourceHolder

schedulerFactoryClass

private java.lang.Class<? extends SchedulerFactory> schedulerFactoryClass

schedulerName

private java.lang.String schedulerName

configLocation

private Resource configLocation

quartzProperties

private java.util.Properties quartzProperties

taskExecutor

private java.util.concurrent.Executor taskExecutor

dataSource

private javax.sql.DataSource dataSource

nonTransactionalDataSource

private javax.sql.DataSource nonTransactionalDataSource

schedulerContextMap

private java.util.Map<java.lang.String,?> schedulerContextMap

applicationContext

private ApplicationContext applicationContext

applicationContextSchedulerContextKey

private java.lang.String applicationContextSchedulerContextKey

jobFactory

private JobFactory jobFactory

jobFactorySet

private boolean jobFactorySet

autoStartup

private boolean autoStartup

startupDelay

private int startupDelay

phase

private int phase

exposeSchedulerInRepository

private boolean exposeSchedulerInRepository

waitForJobsToCompleteOnShutdown

private boolean waitForJobsToCompleteOnShutdown

scheduler

private Scheduler scheduler

Constructor Detail

SchedulerFactoryBean

public SchedulerFactoryBean()

Method Detail

getConfigTimeResourceLoader

public static ResourceLoader getConfigTimeResourceLoader()

Return the ResourceLoader for the currently configured Quartz Scheduler, to be used by ResourceLoaderClassLoadHelper.

This instance will be set before initialization of the corresponding Scheduler, and reset immediately afterwards. It is thus only available during configuration.

See Also:

setApplicationContext(org.springframework.context.ApplicationContext), ResourceLoaderClassLoadHelper

getConfigTimeTaskExecutor

public static java.util.concurrent.Executor getConfigTimeTaskExecutor()

Return the TaskExecutor for the currently configured Quartz Scheduler, to be used by LocalTaskExecutorThreadPool.

This instance will be set before initialization of the corresponding Scheduler, and reset immediately afterwards. It is thus only available during configuration.

See Also:

setTaskExecutor(java.util.concurrent.Executor), LocalTaskExecutorThreadPool

getConfigTimeDataSource

public static javax.sql.DataSource getConfigTimeDataSource()

Return the DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.

This instance will be set before initialization of the corresponding Scheduler, and reset immediately afterwards. It is thus only available during configuration.

See Also:

setDataSource(javax.sql.DataSource), LocalDataSourceJobStore

getConfigTimeNonTransactionalDataSource

public static javax.sql.DataSource getConfigTimeNonTransactionalDataSource()

Return the non-transactional DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.

This instance will be set before initialization of the corresponding Scheduler, and reset immediately afterwards. It is thus only available during configuration.

See Also:

setNonTransactionalDataSource(javax.sql.DataSource), LocalDataSourceJobStore

setSchedulerFactoryClass

public void setSchedulerFactoryClass(java.lang.Class<? extends SchedulerFactory> schedulerFactoryClass)

Set the Quartz SchedulerFactory implementation to use.

Default is StdSchedulerFactory, reading in the standard quartz.properties from quartz.jar. To use custom Quartz properties, specify the "configLocation" or "quartzProperties" bean property on this FactoryBean.

See Also:

org.quartz.impl.StdSchedulerFactory, setConfigLocation(org.springframework.core.io.Resource), setQuartzProperties(java.util.Properties)

setSchedulerName

public void setSchedulerName(java.lang.String schedulerName)

Set the name of the Scheduler to create via the SchedulerFactory.

If not specified, the bean name will be used as default scheduler name.

See Also:

setBeanName(java.lang.String), org.quartz.SchedulerFactory#getScheduler(), org.quartz.SchedulerFactory#getScheduler(String)

setConfigLocation

public void setConfigLocation(Resource configLocation)

Set the location of the Quartz properties config file, for example as classpath resource "classpath:quartz.properties".

Note: Can be omitted when all necessary properties are specified locally via this bean, or when relying on Quartz' default configuration.

See Also:

setQuartzProperties(java.util.Properties)

setQuartzProperties

public void setQuartzProperties(java.util.Properties quartzProperties)

Set Quartz properties, like "org.quartz.threadPool.class".

Can be used to override values in a Quartz properties config file, or to specify all necessary properties locally.

See Also:

setConfigLocation(org.springframework.core.io.Resource)

setTaskExecutor

public void setTaskExecutor(java.util.concurrent.Executor taskExecutor)

Set the Spring TaskExecutor to use as Quartz backend. Exposed as thread pool through the Quartz SPI.

Can be used to assign a JDK 1.5 ThreadPoolExecutor or a CommonJ WorkManager as Quartz backend, to avoid Quartz's manual thread creation.

By default, a Quartz SimpleThreadPool will be used, configured through the corresponding Quartz properties.

See Also:

setQuartzProperties(java.util.Properties), LocalTaskExecutorThreadPool, ThreadPoolTaskExecutor, WorkManagerTaskExecutor

setDataSource

public void setDataSource(javax.sql.DataSource dataSource)

Set the default DataSource to be used by the Scheduler. If set, this will override corresponding settings in Quartz properties.

Note: If this is set, the Quartz settings should not define a job store "dataSource" to avoid meaningless double configuration.

A Spring-specific subclass of Quartz' JobStoreCMT will be used. It is therefore strongly recommended to perform all operations on the Scheduler within Spring-managed (or plain JTA) transactions. Else, database locking will not properly work and might even break (e.g. if trying to obtain a lock on Oracle without a transaction).

Supports both transactional and non-transactional DataSource access. With a non-XA DataSource and local Spring transactions, a single DataSource argument is sufficient. In case of an XA DataSource and global JTA transactions, SchedulerFactoryBean's "nonTransactionalDataSource" property should be set, passing in a non-XA DataSource that will not participate in global transactions.

See Also:

setNonTransactionalDataSource(javax.sql.DataSource), setQuartzProperties(java.util.Properties), SchedulerAccessor.setTransactionManager(org.springframework.transaction.PlatformTransactionManager), LocalDataSourceJobStore

setNonTransactionalDataSource

public void setNonTransactionalDataSource(javax.sql.DataSource nonTransactionalDataSource)

Set the DataSource to be used by the Scheduler for non-transactional access.

This is only necessary if the default DataSource is an XA DataSource that will always participate in transactions: A non-XA version of that DataSource should be specified as "nonTransactionalDataSource" in such a scenario.

This is not relevant with a local DataSource instance and Spring transactions. Specifying a single default DataSource as "dataSource" is sufficient there.

See Also:

setDataSource(javax.sql.DataSource), LocalDataSourceJobStore

setSchedulerContextAsMap

public void setSchedulerContextAsMap(java.util.Map<java.lang.String,?> schedulerContextAsMap)

Register objects in the Scheduler context via a given Map. These objects will be available to any Job that runs in this Scheduler.

Note: When using persistent Jobs whose JobDetail will be kept in the database, do not put Spring-managed beans or an ApplicationContext reference into the JobDataMap but rather into the SchedulerContext.

Parameters:

schedulerContextAsMap - Map with String keys and any objects as values (for example Spring-managed beans)

See Also:

JobDetailFactoryBean.setJobDataAsMap(java.util.Map<java.lang.String, ?>)

setApplicationContextSchedulerContextKey

public void setApplicationContextSchedulerContextKey(java.lang.String applicationContextSchedulerContextKey)

Set the key of an ApplicationContext reference to expose in the SchedulerContext, for example "applicationContext". Default is none. Only applicable when running in a Spring ApplicationContext.

Note: When using persistent Jobs whose JobDetail will be kept in the database, do not put an ApplicationContext reference into the JobDataMap but rather into the SchedulerContext.

In case of a QuartzJobBean, the reference will be applied to the Job instance as bean property. An "applicationContext" attribute will correspond to a "setApplicationContext" method in that scenario.

Note that BeanFactory callback interfaces like ApplicationContextAware are not automatically applied to Quartz Job instances, because Quartz itself is responsible for the lifecycle of its Jobs.

See Also:

JobDetailFactoryBean.setApplicationContextJobDataKey(java.lang.String), ApplicationContext

setJobFactory

public void setJobFactory(JobFactory jobFactory)

Set the Quartz JobFactory to use for this Scheduler.

Default is Spring's AdaptableJobFactory, which supports Runnable objects as well as standard Quartz org.quartz.Job instances. Note that this default only applies to a local Scheduler, not to a RemoteScheduler (where setting a custom JobFactory is not supported by Quartz).

Specify an instance of Spring's SpringBeanJobFactory here (typically as an inner bean definition) to automatically populate a job's bean properties from the specified job data map and scheduler context.

See Also:

AdaptableJobFactory, SpringBeanJobFactory

setAutoStartup

public void setAutoStartup(boolean autoStartup)

Set whether to automatically start the scheduler after initialization.

Default is "true"; set this to "false" to allow for manual startup.

isAutoStartup

public boolean isAutoStartup()

Return whether this scheduler is configured for auto-startup. If "true", the scheduler will start after the context is refreshed and after the start delay, if any.

Specified by:

isAutoStartup in interface SmartLifecycle

See Also:

Lifecycle.start(), Phased.getPhase(), LifecycleProcessor.onRefresh(), ConfigurableApplicationContext.refresh()

setPhase

public void setPhase(int phase)

Specify the phase in which this scheduler should be started and stopped. The startup order proceeds from lowest to highest, and the shutdown order is the reverse of that. By default this value is Integer.MAX_VALUE meaning that this scheduler starts as late as possible and stops as soon as possible.

getPhase

public int getPhase()

Return the phase in which this scheduler will be started and stopped.

Specified by:

getPhase in interface Phased

setStartupDelay

public void setStartupDelay(int startupDelay)

Set the number of seconds to wait after initialization before starting the scheduler asynchronously. Default is 0, meaning immediate synchronous startup on initialization of this bean.

Setting this to 10 or 20 seconds makes sense if no jobs should be run before the entire application has started up.

setExposeSchedulerInRepository

public void setExposeSchedulerInRepository(boolean exposeSchedulerInRepository)

Set whether to expose the Spring-managed Scheduler instance in the Quartz SchedulerRepository. Default is "false", since the Spring-managed Scheduler is usually exclusively intended for access within the Spring context.

Switch this flag to "true" in order to expose the Scheduler globally. This is not recommended unless you have an existing Spring application that relies on this behavior. Note that such global exposure was the accidental default in earlier Spring versions; this has been fixed as of Spring 2.5.6.

setWaitForJobsToCompleteOnShutdown

public void setWaitForJobsToCompleteOnShutdown(boolean waitForJobsToCompleteOnShutdown)

Set whether to wait for running jobs to complete on shutdown.

Default is "false". Switch this to "true" if you prefer fully completed jobs at the expense of a longer shutdown phase.

See Also:

org.quartz.Scheduler#shutdown(boolean)

setBeanName

public void setBeanName(java.lang.String name)

Description copied from interface: BeanNameAware

Set the name of the bean in the bean factory that created this bean.

Invoked after population of normal bean properties but before an init callback such as InitializingBean.afterPropertiesSet() or a custom init-method.

Specified by:

setBeanName in interface BeanNameAware

Parameters:

name - the name of the bean in the factory. Note that this name is the actual bean name used in the factory, which may differ from the originally specified name: in particular for inner bean names, the actual bean name might have been made unique through appending "#..." suffixes. Use the BeanFactoryUtils.originalBeanName(String) method to extract the original bean name (without suffix), if desired.

setApplicationContext

public void setApplicationContext(ApplicationContext applicationContext)

Description copied from interface: ApplicationContextAware

Set the ApplicationContext that this object runs in. Normally this call will be used to initialize the object.

Invoked after population of normal bean properties but before an init callback such as InitializingBean.afterPropertiesSet() or a custom init-method. Invoked after ResourceLoaderAware.setResourceLoader(org.springframework.core.io.ResourceLoader), ApplicationEventPublisherAware.setApplicationEventPublisher(org.springframework.context.ApplicationEventPublisher) and MessageSourceAware, if applicable.

Specified by:

setApplicationContext in interface ApplicationContextAware

Parameters:

applicationContext - the ApplicationContext object to be used by this object

See Also:

BeanInitializationException

afterPropertiesSet

public void afterPropertiesSet()
                        throws java.lang.Exception

Description copied from interface: InitializingBean

Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).

This method allows the bean instance to perform initialization only possible when all bean properties have been set and to throw an exception in the event of misconfiguration.

Specified by:

afterPropertiesSet in interface InitializingBean

Throws:

java.lang.Exception - in the event of misconfiguration (such as failure to set an essential property) or if initialization fails.

initSchedulerFactory

private void initSchedulerFactory(SchedulerFactory schedulerFactory)
                           throws SchedulerException,
                                  java.io.IOException

Load and/or apply Quartz properties to the given SchedulerFactory.

Parameters:

schedulerFactory - the SchedulerFactory to initialize

Throws:

SchedulerException

java.io.IOException

createScheduler

protected Scheduler createScheduler(SchedulerFactory schedulerFactory,
                                    java.lang.String schedulerName)
                             throws SchedulerException

Create the Scheduler instance for the given factory and scheduler name. Called by afterPropertiesSet().

The default implementation invokes SchedulerFactory's getScheduler method. Can be overridden for custom Scheduler creation.

Parameters:

schedulerFactory - the factory to create the Scheduler with

schedulerName - the name of the scheduler to create

Returns:

the Scheduler instance

Throws:

SchedulerException - if thrown by Quartz methods

See Also:

afterPropertiesSet(), org.quartz.SchedulerFactory#getScheduler

populateSchedulerContext

private void populateSchedulerContext()
                               throws SchedulerException

Expose the specified context attributes and/or the current ApplicationContext in the Quartz SchedulerContext.

Throws:

SchedulerException

startScheduler

protected void startScheduler(Scheduler scheduler,
                              int startupDelay)
                       throws SchedulerException

Start the Quartz Scheduler, respecting the "startupDelay" setting.

Parameters:

scheduler - the Scheduler to start

startupDelay - the number of seconds to wait before starting the Scheduler asynchronously

Throws:

SchedulerException

getScheduler

public Scheduler getScheduler()

Description copied from class: SchedulerAccessor

Template method that determines the Scheduler to operate on. To be implemented by subclasses.

Specified by:

getScheduler in class SchedulerAccessor

getObject

public Scheduler getObject()

Description copied from interface: FactoryBean

Return an instance (possibly shared or independent) of the object managed by this factory.

As with a BeanFactory, this allows support for both the Singleton and Prototype design pattern.

If this FactoryBean is not fully initialized yet at the time of the call (for example because it is involved in a circular reference), throw a corresponding FactoryBeanNotInitializedException.

As of Spring 2.0, FactoryBeans are allowed to return null objects. The factory will consider this as normal value to be used; it will not throw a FactoryBeanNotInitializedException in this case anymore. FactoryBean implementations are encouraged to throw FactoryBeanNotInitializedException themselves now, as appropriate.

Specified by:

getObject in interface FactoryBean<Scheduler>

Returns:

an instance of the bean (can be null)

See Also:

FactoryBeanNotInitializedException

getObjectType

public java.lang.Class<? extends Scheduler> getObjectType()

Description copied from interface: FactoryBean

Return the type of object that this FactoryBean creates, or null if not known in advance.

This allows one to check for specific types of beans without instantiating objects, for example on autowiring.

In the case of implementations that are creating a singleton object, this method should try to avoid singleton creation as far as possible; it should rather estimate the type in advance. For prototypes, returning a meaningful type here is advisable too.

This method can be called before this FactoryBean has been fully initialized. It must not rely on state created during initialization; of course, it can still use such state if available.

NOTE: Autowiring will simply ignore FactoryBeans that return null here. Therefore it is highly recommended to implement this method properly, using the current state of the FactoryBean.

Specified by:

getObjectType in interface FactoryBean<Scheduler>

Returns:

the type of object that this FactoryBean creates, or null if not known at the time of the call

See Also:

ListableBeanFactory.getBeansOfType(java.lang.Class<T>)

isSingleton

public boolean isSingleton()

Description copied from interface: FactoryBean

Is the object managed by this factory a singleton? That is, will FactoryBean.getObject() always return the same object (a reference that can be cached)?

NOTE: If a FactoryBean indicates to hold a singleton object, the object returned from getObject() might get cached by the owning BeanFactory. Hence, do not return true unless the FactoryBean always exposes the same reference.

The singleton status of the FactoryBean itself will generally be provided by the owning BeanFactory; usually, it has to be defined as singleton there.

NOTE: This method returning false does not necessarily indicate that returned objects are independent instances. An implementation of the extended SmartFactoryBean interface may explicitly indicate independent instances through its SmartFactoryBean.isPrototype() method. Plain FactoryBean implementations which do not implement this extended interface are simply assumed to always return independent instances if the isSingleton() implementation returns false.

Specified by:

isSingleton in interface FactoryBean<Scheduler>

Returns:

whether the exposed object is a singleton

See Also:

FactoryBean.getObject(), SmartFactoryBean.isPrototype()

start

public void start()
           throws SchedulingException

Description copied from interface: Lifecycle

Start this component.

Should not throw an exception if the component is already running.

In the case of a container, this will propagate the start signal to all components that apply.

Specified by:

start in interface Lifecycle

Throws:

SchedulingException

See Also:

SmartLifecycle.isAutoStartup()

stop

public void stop()
          throws SchedulingException

Description copied from interface: Lifecycle

Stop this component, typically in a synchronous fashion, such that the component is fully stopped upon return of this method. Consider implementing SmartLifecycle and its stop(Runnable) variant when asynchronous stop behavior is necessary.

Note that this stop notification is not guaranteed to come before destruction: On regular shutdown, Lifecycle beans will first receive a stop notification before the general destruction callbacks are being propagated; however, on hot refresh during a context's lifetime or on aborted refresh attempts, only destroy methods will be called.

Should not throw an exception if the component isn't started yet.

In the case of a container, this will propagate the stop signal to all components that apply.

Specified by:

stop in interface Lifecycle

Throws:

SchedulingException

See Also:

SmartLifecycle.stop(Runnable), DisposableBean.destroy()

stop

public void stop(java.lang.Runnable callback)
          throws SchedulingException

Description copied from interface: SmartLifecycle

Indicates that a Lifecycle component must stop if it is currently running.

The provided callback is used by the LifecycleProcessor to support an ordered, and potentially concurrent, shutdown of all components having a common shutdown order value. The callback must be executed after the SmartLifecycle component does indeed stop.

The LifecycleProcessor will call only this variant of the stop method; i.e. Lifecycle.stop() will not be called for SmartLifecycle implementations unless explicitly delegated to within the implementation of this method.

Specified by:

stop in interface SmartLifecycle

Throws:

SchedulingException

See Also:

Lifecycle.stop(), Phased.getPhase()

isRunning

public boolean isRunning()
                  throws SchedulingException

Description copied from interface: Lifecycle

Check whether this component is currently running.

In the case of a container, this will return true only if all components that apply are currently running.

Specified by:

isRunning in interface Lifecycle

Returns:

whether the component is currently running

Throws:

SchedulingException

destroy

public void destroy()
             throws SchedulerException

Shut down the Quartz scheduler on bean factory shutdown, stopping all scheduled jobs.

Specified by:

destroy in interface DisposableBean

Throws:

SchedulerException