Module org.jmolecules.ddd

Package org.jmolecules.ddd.types

Interface Association<T extends AggregateRoot<T,ID>,ID extends Identifier>

All Superinterfaces:

Identifiable<ID>

@Stereotype(priority=0)
public interface Association<T extends AggregateRoot<T,ID>,ID extends Identifier>
extends Identifiable<ID>

An association to an AggregateRoot.

Author:

Christian Stettler, Henning Schwentner, Stephan Pirnbaum, Martin Schimak, John Sullivan, Oliver Drotbohm

See Also:

• John Sullivan - Advancing Enterprise DDD - Reinstating the Aggregate

Method Summary

Modifier and Type	Method	Description
static <T extends AggregateRoot<T, ID>, ID extends Identifier> Association<T,ID>	forAggregate(T aggregate)	Creates an Association pointing to the Identifier of the given AggregateRoot.
static <T extends AggregateRoot<T, ID>, ID extends Identifier> Association<T,ID>	forId(ID identifier)	Creates an Association pointing to the given Identifier.
default boolean	pointsTo(ID identifier)	Returns whether the current Association points to the AggregateRoot with the given Identifier.
default boolean	pointsTo(T aggregate)	Returns whether the current Association points to the given AggregateRoot.
default boolean	pointsToSameAggregateAs(Association<?,ID> other)	Returns whether the current Association points to the same AggregateRoot as the given one.

Methods inherited from interface org.jmolecules.ddd.types.Identifiable

getId

Method Details

forAggregate

static <T extends AggregateRoot<T,
ID>,
ID extends Identifier>
Association<T,ID> forAggregate(T aggregate)

Creates an Association pointing to the Identifier of the given AggregateRoot.

Type Parameters:

T - the concrete AggregateRoot type.

ID - the concrete Identifier type.

Parameters:

aggregate - must not be null.

Returns:

an Association pointing to the Identifier of the given AggregateRoot, will never be null.

Since:

1.2

forId

static <T extends AggregateRoot<T,
ID>,
ID extends Identifier>
Association<T,ID> forId(ID identifier)

Creates an Association pointing to the given Identifier.

Type Parameters:

T - the concrete AggregateRoot type.

ID - the concrete Identifier type.

Parameters:

identifier - must not be null.

Returns:

an Association pointing to the given Identifier, will never be null.

Since:

1.2

pointsToSameAggregateAs

default boolean pointsToSameAggregateAs(Association<?,ID> other)

Returns whether the current Association points to the same AggregateRoot as the given one. Unlike #equals(Object) and #hashCode() that also check for type equality of the Association itself, this only compares the target Identifier instances.

Parameters:

other - must not be null.

Returns:

whether the current Association points to the same AggregateRoot as the given one.

Since:

1.2

pointsTo

default boolean pointsTo(ID identifier)

Returns whether the current Association points to the AggregateRoot with the given Identifier. Unlike #equals(Object) and #hashCode() that also check for type equality of the Association itself, this only compares the target Identifier instances.

Parameters:

identifier -

Returns:

whether the current Association points to the AggregateRoot with the given Identifier.

Since:

1.4

pointsTo

default boolean pointsTo(T aggregate)

Returns whether the current Association points to the given AggregateRoot. Unlike #equals(Object) and #hashCode() that also check for type equality of the Association itself, this only compares the target Identifier instances.

Parameters:

aggregate - must not be null.

Returns:

whether the current Association points to the given AggregateRoot.

Since:

1.4