org.axonframework.spring.eventsourcing

Class SpringAggregateSnapshotter

java.lang.Object

org.axonframework.eventsourcing.AbstractSnapshotter

org.axonframework.eventsourcing.AggregateSnapshotter

org.axonframework.spring.eventsourcing.SpringAggregateSnapshotter

All Implemented Interfaces:

Snapshotter, org.springframework.beans.factory.Aware, org.springframework.context.ApplicationContextAware

public class SpringAggregateSnapshotter
extends AggregateSnapshotter
implements org.springframework.context.ApplicationContextAware

Snapshotter implementation that uses the AggregateRoot as state for the snapshot. Unlike the AggregateSnapshotter, this implementation lazily retrieves AggregateFactories from the Application Context when snapshot requests are made.

Instead of configuring directly, consider using the SpringAggregateSnapshotterFactoryBean, which configures this class using values available in the application context.

See Also:

SpringAggregateSnapshotterFactoryBean

Constructor Summary

Constructors

Constructor and Description
SpringAggregateSnapshotter(EventStore eventStore, ParameterResolverFactory parameterResolverFactory, Executor executor, TransactionManager txManager) Initializes a snapshotter.
SpringAggregateSnapshotter(EventStore eventStore, ParameterResolverFactory parameterResolverFactory, HandlerDefinition handlerDefinition, Executor executor, TransactionManager txManager, RepositoryProvider repositoryProvider) Initializes a snapshotter using the ParameterResolverFactory instances available on the classpath.

Method Summary

Modifier and Type	Method and Description
protected AggregateFactory<?>	getAggregateFactory(Class<?> aggregateType) Returns the AggregateFactory registered for the given aggregateType, or null if no such AggregateFactory is known.
void	setApplicationContext(org.springframework.context.ApplicationContext applicationContext)

Methods inherited from class org.axonframework.eventsourcing.AggregateSnapshotter

createSnapshot, registerAggregateFactory

Methods inherited from class org.axonframework.eventsourcing.AbstractSnapshotter

createSnapshotterTask, getEventStore, getExecutor, scheduleSnapshot

Methods inherited from class java.lang.Object

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

Constructor Detail

SpringAggregateSnapshotter

public SpringAggregateSnapshotter(EventStore eventStore,
                                  ParameterResolverFactory parameterResolverFactory,
                                  Executor executor,
                                  TransactionManager txManager)

Initializes a snapshotter. The given Aggregate Factories are lazily retrieved from the application context.

Parameters:

eventStore - The Event Store to store snapshots in

parameterResolverFactory - The parameterResolverFactory used to reconstruct aggregates

executor - The executor that processes the snapshotting requests

txManager - The transaction manager to manage the persistence transactions with

SpringAggregateSnapshotter

public SpringAggregateSnapshotter(EventStore eventStore,
                                  ParameterResolverFactory parameterResolverFactory,
                                  HandlerDefinition handlerDefinition,
                                  Executor executor,
                                  TransactionManager txManager,
                                  RepositoryProvider repositoryProvider)

Initializes a snapshotter using the ParameterResolverFactory instances available on the classpath. The given Aggregate Factories are lazily retrieved from the application context.

Parameters:

eventStore - The Event Store to store snapshots in

parameterResolverFactory - The parameterResolverFactory used to reconstruct aggregates

handlerDefinition - The handler definition used to create concrete handlers

executor - The executor that processes the snapshotting requests

txManager - The transaction manager to manage the persistence transactions with

repositoryProvider - Provides repositories for specific aggregate types

Method Detail

getAggregateFactory

protected AggregateFactory<?> getAggregateFactory(Class<?> aggregateType)

Description copied from class: AggregateSnapshotter

Returns the AggregateFactory registered for the given aggregateType, or null if no such AggregateFactory is known.

Sublasses may override this method to enhance how AggregateFactories are retrieved. They may choose to AggregateSnapshotter.registerAggregateFactory(AggregateFactory) if it hasn't been found using this implementation.

Overrides:

getAggregateFactory in class AggregateSnapshotter

Parameters:

aggregateType - The type to get the AggregateFactory for

Returns:

the appropriate AggregateFactory, or null if not found

setApplicationContext

public void setApplicationContext(org.springframework.context.ApplicationContext applicationContext)
                           throws org.springframework.beans.BeansException

Specified by:

setApplicationContext in interface org.springframework.context.ApplicationContextAware

Throws:

org.springframework.beans.BeansException