org.axonframework.eventsourcing.eventstore

Class AbstractSnapshotEventEntry<T>

java.lang.Object

org.axonframework.eventhandling.AbstractEventEntry<T>

org.axonframework.eventsourcing.eventstore.AbstractSnapshotEventEntry<T>

All Implemented Interfaces:

DomainEventData<T>, EventData<T>

Direct Known Subclasses:

SnapshotEventEntry

@MappedSuperclass
public abstract class AbstractSnapshotEventEntry<T>
extends AbstractEventEntry<T>
implements DomainEventData<T>

Abstract base class of a serialized snapshot event storing the state of an aggregate. If JPA is used these entries have a primary key that is a combination of the aggregate's identifier, sequence number and type.

Author:

Rene de Waele

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	AbstractSnapshotEventEntry.PK Primary key definition of the AbstractEventEntry class.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AbstractSnapshotEventEntry() Default constructor required by JPA
	AbstractSnapshotEventEntry(DomainEventMessage<?> eventMessage, Serializer serializer, Class<T> contentType) Construct a new event entry from a published domain event message to enable storing the event or sending it to a remote location.
	AbstractSnapshotEventEntry(String type, String aggregateIdentifier, long sequenceNumber, String eventIdentifier, Object timestamp, String payloadType, String payloadRevision, T payload, T metaData) Reconstruct an event entry from a stored object.

Method Summary

Modifier and Type	Method and Description
String	getAggregateIdentifier() Returns the Identifier of the Aggregate to which the Event was applied.
long	getSequenceNumber() Returns the sequence number of the event in the aggregate.
String	getType() Returns the type identifier of the aggregate.

Methods inherited from class org.axonframework.eventhandling.AbstractEventEntry

getEventIdentifier, getMetaData, getPayload, getTimestamp

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.axonframework.eventhandling.EventData

getEventIdentifier, getMetaData, getPayload, getTimestamp

Constructor Detail

AbstractSnapshotEventEntry

public AbstractSnapshotEventEntry(DomainEventMessage<?> eventMessage,
                                  Serializer serializer,
                                  Class<T> contentType)

Construct a new event entry from a published domain event message to enable storing the event or sending it to a remote location.

The given serializer will be used to serialize the payload and metadata in the given eventMessage. The type of the serialized data will be the same as the given contentType.

Parameters:

eventMessage - The event message to convert to a serialized event entry

serializer - The serializer to convert the event

contentType - The data type of the payload and metadata after serialization

AbstractSnapshotEventEntry

public AbstractSnapshotEventEntry(String type,
                                  String aggregateIdentifier,
                                  long sequenceNumber,
                                  String eventIdentifier,
                                  Object timestamp,
                                  String payloadType,
                                  String payloadRevision,
                                  T payload,
                                  T metaData)

Reconstruct an event entry from a stored object.

Parameters:

type - The type of aggregate that published this event

aggregateIdentifier - The identifier of the aggregate that published this event

sequenceNumber - The sequence number of the event in the aggregate

eventIdentifier - The identifier of the event

timestamp - The time at which the event was originally created

payloadType - The fully qualified class name or alias of the event payload

payloadRevision - The revision of the event payload

payload - The serialized payload

metaData - The serialized metadata

AbstractSnapshotEventEntry

protected AbstractSnapshotEventEntry()

Default constructor required by JPA

Method Detail

getType

public String getType()

Description copied from interface: DomainEventData

Returns the type identifier of the aggregate.

Specified by:

getType in interface DomainEventData<T>

Returns:

the type identifier of the aggregate.

getAggregateIdentifier

public String getAggregateIdentifier()

Description copied from interface: DomainEventData

Returns the Identifier of the Aggregate to which the Event was applied.

Specified by:

getAggregateIdentifier in interface DomainEventData<T>

Returns:

the Identifier of the Aggregate to which the Event was applied

getSequenceNumber

public long getSequenceNumber()

Description copied from interface: DomainEventData

Returns the sequence number of the event in the aggregate.

Specified by:

getSequenceNumber in interface DomainEventData<T>

Returns:

the sequence number of the event in the aggregate