wow-core/me.ahoo.wow.modeling.state/SimpleStateAggregate

SimpleStateAggregate

class SimpleStateAggregate<S : Any>(val aggregateId: AggregateId, val metadata: StateAggregateMetadata<S>, val state: S, var ownerId: String = OwnerId.DEFAULT_OWNER_ID, var spaceId: SpaceId = SpaceIdCapable.DEFAULT_SPACE_ID, var version: Int = Version.UNINITIALIZED_VERSION, var eventId: String = "", var firstOperator: String = "", var operator: String = "", var firstEventTime: Long = 0, var eventTime: Long = 0, var tags: AbacTags = EMPTY_ABAC_TAGS, var deleted: Boolean = false) : StateAggregate<S> , TypedAggregate<S>

A simple implementation of StateAggregate that manages aggregate state through event sourcing.

This class applies domain events to update the aggregate's state, handles ownership transfers, deletion, and recovery events, and maintains versioning for consistency.

Type Parameters

S

The type of the aggregate state.

Constructors

SimpleStateAggregate

constructor(aggregateId: AggregateId, metadata: StateAggregateMetadata<S>, state: S, ownerId: String = OwnerId.DEFAULT_OWNER_ID, spaceId: SpaceId = SpaceIdCapable.DEFAULT_SPACE_ID, version: Int = Version.UNINITIALIZED_VERSION, eventId: String = "", firstOperator: String = "", operator: String = "", firstEventTime: Long = 0, eventTime: Long = 0, tags: AbacTags = EMPTY_ABAC_TAGS, deleted: Boolean = false)

Types

object Companion

Properties

open override val aggregateId: AggregateId

The unique identifier of the aggregate.

open override val aggregateType: Class<S>

open override var deleted: Boolean

Indicates whether the aggregate has been deleted. Defaults to false.

open override var eventId: String

The ID of the last processed event. Defaults to an empty string.

open override var eventTime: Long

The timestamp of the last event. Defaults to 0.

expectedNextVersion

open val expectedNextVersion: Int

The expected version for the next event to be applied.

open override var firstEventTime: Long

The timestamp of the first event. Defaults to 0.

open override var firstOperator: String

The operator who initiated the first event. Defaults to an empty string.

open val initialized: Boolean

isInitialVersion

open val isInitialVersion: Boolean

val metadata: StateAggregateMetadata<S>

Metadata describing the state aggregate, including sourcing functions.

open override var operator: String

The operator who initiated the last event. Defaults to an empty string.

open override var ownerId: String

The identifier of the current owner of the aggregate. Defaults to OwnerId.DEFAULT_OWNER_ID.

open override var spaceId: SpaceId

The identifier of the current space of the aggregate. Defaults to SpaceIdCapable.DEFAULT_SPACE_ID.

open override val state: S

The current state of the aggregate.

open override var tags: AbacTags

The ABAC tags associated with the aggregate.

open override var version: Int

The current version of the aggregate. Defaults to Version.UNINITIALIZED_VERSION.

Functions

open operator override fun equals(other: Any?): Boolean

open override fun hashCode(): Int

open override fun onSourcing(eventStream: DomainEventStream): StateAggregate<S>

Applies a stream of domain events to update the aggregate's state.

fun AggregateIdCapable.toGroupKey(parallelism: Int = DEFAULT_PARALLELISM): Int

Computes a grouping key for parallel processing based on the aggregate ID.

fun <S : Any, D : Any> ReadOnlyStateAggregate<S>.toMedium(materialize: (S) -> D): MediumMaterializedSnapshot<D>

fun <S : Any, D : Any> ReadOnlyStateAggregate<S>.toSmall(materialize: (S) -> D): SmallMaterializedSnapshot<D>

toStateAggregate

fun <S : Any> ReadOnlyStateAggregate<S>.toStateAggregate(): StateAggregate<S>

open override fun toString(): String