io.spine.server.aggregate

Class AggregateRoot<I>

java.lang.Object

io.spine.server.aggregate.AggregateRoot<I>

Type Parameters:

I - the type for IDs of this class of aggregates

@Experimental
public class AggregateRoot<I>
extends java.lang.Object

A root object for a larger aggregate.

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	AggregateRoot(BoundedContext context, I id) Creates a new instance.

Method Summary

Modifier and Type	Method and Description
I	id() Obtains the aggregate ID.
protected <S extends io.spine.base.EntityState,A extends AggregatePart<I,S,?,?>> S	partState(java.lang.Class<S> partStateClass) Obtains a part state by its class.

Methods inherited from class java.lang.Object

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

Constructor Detail

AggregateRoot

protected AggregateRoot(BoundedContext context,
                        I id)

Creates a new instance.

Parameters:

context - the bounded context to which the aggregate belongs

id - the ID of the aggregate

Method Detail

id

public I id()

Obtains the aggregate ID.

partState

protected <S extends io.spine.base.EntityState,A extends AggregatePart<I,S,?,?>> S partState(java.lang.Class<S> partStateClass)

Obtains a part state by its class.

Type Parameters:

S - the type of the part state

Parameters:

partStateClass - the class of the state of the part

Returns:

the state of the part or a default state if the state was not found

Throws:

java.lang.IllegalStateException - if a repository was not found, or the ID type of the part state does not match the ID type of this AggregateRoot