io.spine.server.aggregate

Interface AggregateRootDirectory

@Experimental
 @SPI
public interface AggregateRootDirectory

A mapping of aggregate roots to the associated parts.

In the directory, the aggregate root is represented by its type and the parts - by their repositories.

Method Summary

Modifier and Type	Method and Description
java.util.Optional<? extends AggregatePartRepository<?,?,?>>	findPart(java.lang.Class<? extends AggregateRoot<?>> rootClass, java.lang.Class<? extends io.spine.base.EntityState> partStateClass) Looks up an aggregate part repository by the type of the root and the type of the part state.
void	register(AggregatePartRepository<?,?,?> repository) Associates the given aggregate part repository and the respective root type.

Method Detail

register

void register(AggregatePartRepository<?,?,?> repository)

Associates the given aggregate part repository and the respective root type.

findPart

java.util.Optional<? extends AggregatePartRepository<?,?,?>> findPart(java.lang.Class<? extends AggregateRoot<?>> rootClass,
                                                                      java.lang.Class<? extends io.spine.base.EntityState> partStateClass)

Looks up an aggregate part repository by the type of the root and the type of the part state.

If a matching repository if registered, it is obtained by this method with no regard to the visibility of the aggregate.

Parameters:

rootClass - the type of the aggregate root

partStateClass - the type of the part state

Returns:

the AggregatePartRepository or Optional.empty() if such a repository is not registered