Package org.axonframework.modelling.entity.child

Class GetterEvolverChildEntityFieldDefinition<P,F>

java.lang.Object

org.axonframework.modelling.entity.child.GetterEvolverChildEntityFieldDefinition<P,F>

Type Parameters:

P - The type of the parent entity.

F - The type of the field. This can be the type of the child entity or a collection of child entities.

All Implemented Interfaces:

ChildEntityFieldDefinition<P,F>

public class GetterEvolverChildEntityFieldDefinition<P,F>
extends Object
implements ChildEntityFieldDefinition<P,F>

Implementation of ChildEntityFieldDefinition that uses a getter and an evolver to get the child entities from the parent, and to evolve the parent based on the child entities.

Since:

5.0.0

Author:

Mitchell Herrijgers

Constructor Summary

Constructors

Constructor	Description
GetterEvolverChildEntityFieldDefinition(Function<P,F> getter, BiFunction<P,F,P> evolver)	Creates a new ChildEntityFieldDefinition that uses the given getter and evolver to access the child entity and evolve the parent entity.

Method Summary

Modifier and Type	Method	Description
P	evolveParentBasedOnChildInput(P parentEntity, F childInput)	Evolves the parent entity based on the provided child value.
F	getChildValue(P parentEntity)	Returns the type of the field.

Methods inherited from class java.lang.Object

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

Constructor Details

GetterEvolverChildEntityFieldDefinition

public GetterEvolverChildEntityFieldDefinition(@Nonnull
 Function<P,F> getter,
 @Nonnull
 BiFunction<P,F,P> evolver)

Creates a new ChildEntityFieldDefinition that uses the given getter and evolver to access the child entity and evolve the parent entity.

Parameters:

getter - the getter to access the child entity.

evolver - the evolver to evolve the parent entity based on the child entity.

Method Details

evolveParentBasedOnChildInput

@Nonnull
public P evolveParentBasedOnChildInput(@Nonnull
 P parentEntity,
 @Nonnull
 F childInput)

Description copied from interface: ChildEntityFieldDefinition

Evolves the parent entity based on the provided child value. This can be a single entity, or a collection of entities. The evolver can return a new version of the parent entity, or it can simply set the field on the parent entity.

Specified by:

evolveParentBasedOnChildInput in interface ChildEntityFieldDefinition<P,F>

Parameters:

parentEntity - The parent entity to evolve.

childInput - The child entity to use for evolution.

Returns:

The evolved parent entity.

getChildValue

public F getChildValue(@Nonnull
 P parentEntity)

Description copied from interface: ChildEntityFieldDefinition

Returns the type of the field.

Specified by:

getChildValue in interface ChildEntityFieldDefinition<P,F>

Parameters:

parentEntity - The parent entity to get the child entities from.

Returns:

The type of the field.