Package org.axonframework.disruptor.commandhandling

Class CommandHandlerInvoker

java.lang.Object

org.axonframework.disruptor.commandhandling.CommandHandlerInvoker

All Implemented Interfaces:

com.lmax.disruptor.EventHandler<CommandHandlingEntry>, com.lmax.disruptor.LifecycleAware

public class CommandHandlerInvoker
extends Object
implements com.lmax.disruptor.EventHandler<CommandHandlingEntry>, com.lmax.disruptor.LifecycleAware

Component of the DisruptorCommandBus that invokes the command handler. The execution is done within a Unit Of Work. If an aggregate has been preloaded, it is set to the ThreadLocal.

Since:

2.0

Author:

Allard Buijze

Constructor Summary

Constructors

Constructor	Description
CommandHandlerInvoker(Cache cache, int segmentId)	Create an aggregate invoker instance for the given segment and cache.

Method Summary

Modifier and Type	Method	Description
<T> Repository<T>	createRepository(EventStore eventStore, AggregateFactory<T> aggregateFactory, SnapshotTriggerDefinition snapshotTriggerDefinition, ParameterResolverFactory parameterResolverFactory)	Create a repository instance for an aggregate created by the given aggregateFactory.
<T> Repository<T>	createRepository(EventStore eventStore, RepositoryProvider repositoryProvider, AggregateFactory<T> aggregateFactory, SnapshotTriggerDefinition snapshotTriggerDefinition, ParameterResolverFactory parameterResolverFactory, HandlerDefinition handlerDefinition)	Create a repository instance for an aggregate created by the given aggregateFactory.
static <T> org.axonframework.disruptor.commandhandling.CommandHandlerInvoker.DisruptorRepository<T>	getRepository(Class<?> type)	Returns the Repository instance for Aggregate with given typeIdentifier used by the CommandHandlerInvoker that is running on the current thread.
void	onEvent(CommandHandlingEntry entry, long sequence, boolean endOfBatch)
void	onShutdown()
void	onStart()

Methods inherited from class java.lang.Object

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

Constructor Details

CommandHandlerInvoker

public CommandHandlerInvoker(Cache cache,
 int segmentId)

Create an aggregate invoker instance for the given segment and cache.

Parameters:

cache - The cache temporarily storing aggregate instances

segmentId - The id of the segment this invoker should handle

Method Details

getRepository

public static <T>
org.axonframework.disruptor.commandhandling.CommandHandlerInvoker.DisruptorRepository<T> getRepository(Class<?> type)

Returns the Repository instance for Aggregate with given typeIdentifier used by the CommandHandlerInvoker that is running on the current thread.

Calling this method from any other thread will return null.

Type Parameters:

T - The type of aggregate

Parameters:

type - The type of aggregate

Returns:

the repository instance for aggregate of given type

onEvent

public void onEvent(CommandHandlingEntry entry,
 long sequence,
 boolean endOfBatch)

Specified by:

onEvent in interface com.lmax.disruptor.EventHandler<CommandHandlingEntry>

createRepository

public <T> Repository<T> createRepository(EventStore eventStore,
 AggregateFactory<T> aggregateFactory,
 SnapshotTriggerDefinition snapshotTriggerDefinition,
 ParameterResolverFactory parameterResolverFactory)

Create a repository instance for an aggregate created by the given aggregateFactory. The returning repository must be safe to use by this invoker instance.

Type Parameters:

T - The type of aggregate created by the factory

Parameters:

eventStore - The events store to load and publish events

aggregateFactory - The factory creating aggregate instances

snapshotTriggerDefinition - The trigger definition for snapshots

parameterResolverFactory - The factory used to resolve parameters on command handler methods

Returns:

A Repository instance for the given aggregate

createRepository

public <T> Repository<T> createRepository(EventStore eventStore,
 RepositoryProvider repositoryProvider,
 AggregateFactory<T> aggregateFactory,
 SnapshotTriggerDefinition snapshotTriggerDefinition,
 ParameterResolverFactory parameterResolverFactory,
 HandlerDefinition handlerDefinition)

Create a repository instance for an aggregate created by the given aggregateFactory. The returning repository must be safe to use by this invoker instance.

Type Parameters:

T - The type of aggregate created by the factory

Parameters:

eventStore - The events store to load and publish events

repositoryProvider - Provides repositories for specified aggregate types

aggregateFactory - The factory creating aggregate instances

snapshotTriggerDefinition - The trigger definition for snapshots

parameterResolverFactory - The factory used to resolve parameters on command handler methods

handlerDefinition - The handler definition used to create concrete handlers

Returns:

A Repository instance for the given aggregate

onStart

public void onStart()

Specified by:

onStart in interface com.lmax.disruptor.LifecycleAware

onShutdown

public void onShutdown()

Specified by:

onShutdown in interface com.lmax.disruptor.LifecycleAware