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## org.springframework.scheduling.quartz
Class SchedulerFactoryBean

    java.lang.Object
      org.springframework.scheduling.quartz.SchedulerFactoryBean

All Implemented Interfaces:
  DisposableBean, FactoryBean, InitializingBean, ApplicationContextAware, Lifecycle

    public class SchedulerFactoryBean

extends Object
implements FactoryBean, ApplicationContextAware, InitializingBean, DisposableBean, Lifecycle

FactoryBean that sets up a Quartz `Scheduler`, manages its lifecycle as part of the Spring application context, and exposes the Scheduler 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.

This version of Spring's SchedulerFactoryBean requires Quartz 1.5 or higher.

Since:
  18.02.2004
Author:
  Juergen Hoeller
See Also:
  `setDataSource(javax.sql.DataSource)`, `Scheduler`, `SchedulerFactory`, `StdSchedulerFactory`, `TransactionProxyFactoryBean`

Field Summary
`static int` | `DEFAULT_THREAD_COUNT`
`protected Log` | `logger`
`static String` | `PROP_THREAD_COUNT`

Constructor Summary
`SchedulerFactoryBean()`

Method Summary
`void` | `afterPropertiesSet()` Invoked by a BeanFactory after it has set all bean properties supplied (and satisfied BeanFactoryAware and ApplicationContextAware).
`protected Scheduler` | `createScheduler(SchedulerFactory schedulerFactory, 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 DataSource` | `getConfigTimeDataSource()` Return the DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.
`static DataSource` | `getConfigTimeNonTransactionalDataSource()` Return the non-transactional DataSource for the currently configured Quartz Scheduler, to be used by LocalDataSourceJobStore.
`static TaskExecutor` | `getConfigTimeTaskExecutor()` Return the TaskExecutor for the currently configured Quartz Scheduler, to be used by LocalTaskExecutorThreadPool.
`Object` | `getObject()` Return an instance (possibly shared or independent) of the object managed by this factory.
`Class` | `getObjectType()` Return the type of object that this FactoryBean creates, or `null` if not known in advance.
`boolean` | `isRunning()` Check whether this component is currently running.
`boolean` | `isSingleton()` Is the object managed by this factory a singleton?
`void` | `setApplicationContext(ApplicationContext applicationContext)` Set the ApplicationContext that this object runs in.
`void` | `setApplicationContextSchedulerContextKey(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` | `setCalendars(Map calendars)` Register a list of Quartz Calendar objects with the Scheduler that this FactoryBean creates, to be referenced by Triggers.
`void` | `setConfigLocation(Resource configLocation)` Set the location of the Quartz properties config file, for example as classpath resource "classpath:quartz.properties".
`void` | `setDataSource(DataSource dataSource)` Set the default DataSource to be used by the Scheduler.
`void` | `setGlobalJobListeners(JobListener[] globalJobListeners)` Specify global Quartz JobListeners to be registered with the Scheduler.
`void` | `setGlobalTriggerListeners(TriggerListener[] globalTriggerListeners)` Specify global Quartz TriggerListeners to be registered with the Scheduler.
`void` | `setJobDetails(JobDetail[] jobDetails)` Register a list of JobDetail objects with the Scheduler that this FactoryBean creates, to be referenced by Triggers.
`void` | `setJobFactory(JobFactory jobFactory)` Set the Quartz JobFactory to use for this Scheduler.
`void` | `setJobListeners(JobListener[] jobListeners)` Specify named Quartz JobListeners to be registered with the Scheduler.
`void` | `setJobSchedulingDataLocation(String jobSchedulingDataLocation)` Set the location of a Quartz job definition XML file that follows the "job_scheduling_data_1_0" DTD.
`void` | `setJobSchedulingDataLocations(String[] jobSchedulingDataLocations)` Set the locations of Quartz job definition XML files that follow the "job_scheduling_data_1_0" DTD.
`void` | `setNonTransactionalDataSource(DataSource nonTransactionalDataSource)` Set the DataSource to be used by the Scheduler for non-transactional access.
`void` | `setOverwriteExistingJobs(boolean overwriteExistingJobs)` Set whether any jobs defined on this SchedulerFactoryBean should overwrite existing job definitions.
`void` | `setQuartzProperties(Properties quartzProperties)` Set Quartz properties, like "org.quartz.threadPool.class".
`void` | `setSchedulerContextAsMap(Map schedulerContextAsMap)` Register objects in the Scheduler context via a given Map.
`void` | `setSchedulerFactoryClass(Class schedulerFactoryClass)` Set the Quartz SchedulerFactory implementation to use.
`void` | `setSchedulerListeners(SchedulerListener[] schedulerListeners)` Specify Quartz SchedulerListeners to be registered with the Scheduler.
`void` | `setSchedulerName(String schedulerName)` Set the name of the Scheduler to fetch from the SchedulerFactory.
`void` | `setStartupDelay(int startupDelay)` Set the number of seconds to wait after initialization before starting the scheduler asynchronously.
`void` | `setTaskExecutor(TaskExecutor taskExecutor)` Set the Spring TaskExecutor to use as Quartz backend.
`void` | `setTransactionManager(PlatformTransactionManager transactionManager)` Set the transaction manager to be used for registering jobs and triggers that are defined by this SchedulerFactoryBean.
`void` | `setTriggerListeners(TriggerListener[] triggerListeners)` Specify named Quartz TriggerListeners to be registered with the Scheduler.
`void` | `setTriggers(Trigger[] triggers)` Register a list of Trigger objects with the Scheduler that this FactoryBean creates.
`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.

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 String PROP_THREAD_COUNT

See Also:
  Constant Field Values

### DEFAULT_THREAD_COUNT

    public static final int DEFAULT_THREAD_COUNT

See Also:
  Constant Field Values

### logger

    protected final Log logger

Constructor Detail

### SchedulerFactoryBean

    public SchedulerFactoryBean()

Method Detail

### getConfigTimeTaskExecutor

    public static TaskExecutor 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:
    `setDataSource(javax.sql.DataSource)`, `LocalDataSourceJobStore`

### getConfigTimeDataSource

    public static 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 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(Class 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 "configLocation" or "quartzProperties".

  See Also:
    `StdSchedulerFactory`, `setConfigLocation(org.springframework.core.io.Resource)`, `setQuartzProperties(java.util.Properties)`

### setSchedulerName

    public void setSchedulerName(String schedulerName)

  Set the name of the Scheduler to fetch from the SchedulerFactory. If not specified, the default Scheduler will be used.

  See Also:
    `SchedulerFactory.getScheduler(String)`, `SchedulerFactory.getScheduler()`

### 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(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(TaskExecutor 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(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)`, `setTransactionManager(org.springframework.transaction.PlatformTransactionManager)`, `LocalDataSourceJobStore`

### setNonTransactionalDataSource

    public void setNonTransactionalDataSource(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`

### setTransactionManager

    public void setTransactionManager(PlatformTransactionManager transactionManager)

  Set the transaction manager to be used for registering jobs and triggers that are defined by this SchedulerFactoryBean. Default is none; setting this only makes sense when specifying a DataSource for the Scheduler.

  See Also:
    `setDataSource(javax.sql.DataSource)`

### setSchedulerContextAsMap

    public void setSchedulerContextAsMap(Map 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:
    `JobDetailBean.setJobDataAsMap(java.util.Map)`

### 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`

### setApplicationContextSchedulerContextKey

    public void setApplicationContextSchedulerContextKey(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 reponsible for the lifecycle of its Jobs.

  See Also:
    `JobDetailBean.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 `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`

### setOverwriteExistingJobs

    public void setOverwriteExistingJobs(boolean overwriteExistingJobs)

  Set whether any jobs defined on this SchedulerFactoryBean should overwrite existing job definitions. Default is "false", to not overwrite already registered jobs that have been read in from a persistent job store.

### setJobSchedulingDataLocation

    public void setJobSchedulingDataLocation(String jobSchedulingDataLocation)

  Set the location of a Quartz job definition XML file that follows the "job_scheduling_data_1_0" DTD. Can be specified to automatically register jobs that are defined in such a file, possibly in addition to jobs defined directly on this SchedulerFactoryBean.

  See Also:
    `ResourceJobSchedulingDataProcessor`, `JobSchedulingDataProcessor`

### setJobSchedulingDataLocations

    public void setJobSchedulingDataLocations(String[] jobSchedulingDataLocations)

  Set the locations of Quartz job definition XML files that follow the "job_scheduling_data_1_0" DTD. Can be specified to automatically register jobs that are defined in such files, possibly in addition to jobs defined directly on this SchedulerFactoryBean.

  See Also:
    `ResourceJobSchedulingDataProcessor`, `JobSchedulingDataProcessor`

### setJobDetails

    public void setJobDetails(JobDetail[] jobDetails)

  Register a list of JobDetail objects with the Scheduler that this FactoryBean creates, to be referenced by Triggers.

  This is not necessary when a Trigger determines the JobDetail itself: In this case, the JobDetail will be implicitly registered in combination with the Trigger.

  See Also:
    `setTriggers(org.quartz.Trigger[])`, `JobDetail`, `JobDetailBean`, `JobDetailAwareTrigger`, `Trigger.setJobName(java.lang.String)`

### setCalendars

    public void setCalendars(Map calendars)

  Register a list of Quartz Calendar objects with the Scheduler that this FactoryBean creates, to be referenced by Triggers.

  Parameters:
    `calendars` - Map with calendar names as keys as Calendar objects as values
  See Also:
    `Calendar`, `Trigger.setCalendarName(java.lang.String)`

### setTriggers

    public void setTriggers(Trigger[] triggers)

  Register a list of Trigger objects with the Scheduler that this FactoryBean creates.

  If the Trigger determines the corresponding JobDetail itself, the job will be automatically registered with the Scheduler. Else, the respective JobDetail needs to be registered via the "jobDetails" property of this FactoryBean.

  See Also:
    `setJobDetails(org.quartz.JobDetail[])`, `JobDetail`, `JobDetailAwareTrigger`, `CronTriggerBean`, `SimpleTriggerBean`

### setSchedulerListeners

    public void setSchedulerListeners(SchedulerListener[] schedulerListeners)

  Specify Quartz SchedulerListeners to be registered with the Scheduler.

### setGlobalJobListeners

    public void setGlobalJobListeners(JobListener[] globalJobListeners)

  Specify global Quartz JobListeners to be registered with the Scheduler. Such JobListeners will apply to all Jobs in the Scheduler.

### setJobListeners

    public void setJobListeners(JobListener[] jobListeners)

  Specify named Quartz JobListeners to be registered with the Scheduler. Such JobListeners will only apply to Jobs that explicitly activate them via their name.

  See Also:
    `JobListener.getName()`, `JobDetail.addJobListener(java.lang.String)`, `JobDetailBean.setJobListenerNames(java.lang.String[])`

### setGlobalTriggerListeners

    public void setGlobalTriggerListeners(TriggerListener[] globalTriggerListeners)

  Specify global Quartz TriggerListeners to be registered with the Scheduler. Such TriggerListeners will apply to all Triggers in the Scheduler.

### setTriggerListeners

    public void setTriggerListeners(TriggerListener[] triggerListeners)

  Specify named Quartz TriggerListeners to be registered with the Scheduler. Such TriggerListeners will only apply to Triggers that explicitly activate them via their name.

  See Also:
    `TriggerListener.getName()`, `Trigger.addTriggerListener(java.lang.String)`, `CronTriggerBean.setTriggerListenerNames(java.lang.String[])`, `SimpleTriggerBean.setTriggerListenerNames(java.lang.String[])`

### 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.

### 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.

### 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:
    `Scheduler.shutdown(boolean)`

### afterPropertiesSet

    public void afterPropertiesSet()
                            throws 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:
    `Exception` - in the event of misconfiguration (such as failure to set an essential property) or if initialization fails.

### createScheduler

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

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

  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()`, `SchedulerFactory.getScheduler()`

### 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`

### getObject

    public Object 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`
  Returns:
    an instance of the bean (can be `null`)
  See Also:
    `FactoryBeanNotInitializedException`

### getObjectType

    public Class 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`
  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)`

### 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`
  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`

### stop

    public void stop()
              throws SchedulingException

  Description copied from interface: `Lifecycle`
  Stop this component. 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`

### 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`

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