io.micronaut.data.repository

Interface CrudRepository<E,ID>

Type Parameters:

E - The entity type

ID - The ID type

All Superinterfaces:

GenericRepository<E,ID>

All Known Subinterfaces:

JpaRepository<E,ID>, PageableRepository<E,ID>

@Validated
public interface CrudRepository<E,ID>
extends GenericRepository<E,ID>

A repository interface for performing CRUD (Create, Read, Update, Delete). This a blocking variant and is largely based on the same interface in Spring Data, however includes integrated validation support.

Since:

1.0

Author:

graemerocher

Method Summary

Modifier and Type	Method and Description
long	count() Returns the number of entities available.
void	delete(E entity) Deletes a given entity.
void	deleteAll() Deletes all entities managed by the repository.
void	deleteAll(@NotNull java.lang.Iterable<? extends E> entities) Deletes the given entities.
void	deleteById(ID id) Deletes the entity with the given id.
boolean	existsById(ID id) Returns whether an entity with the given id exists.
java.lang.Iterable<E>	findAll() Returns all instances of the type.
java.util.Optional<E>	findById(ID id) Retrieves an entity by its id.
<S extends E> S	save(S entity) Saves the given valid entity, returning a possibly new entity representing the saved state.
<S extends E> java.lang.Iterable<S>	saveAll(@Valid @NotNull java.lang.Iterable<S> entities) Saves all given entities, possibly returning new instances representing the saved state.
<S extends E> S	update(S entity) This method issues an explicit update for the given entity.

Method Detail

save

@NonNull
<S extends E> S save(@Valid @NotNull @NonNull
                              S entity)

Saves the given valid entity, returning a possibly new entity representing the saved state. Note that certain implementations may not be able to detect whether a save or update should be performed and may always perform an insert. The update(Object) method can be used in this case to explicitly request an update.

Type Parameters:

S - The generic type

Parameters:

entity - The entity to save. Must not be null.

Returns:

The saved entity will never be null.

Throws:

javax.validation.ConstraintViolationException - if the entity is null or invalid.

update

@NonNull
<S extends E> S update(@Valid @NotNull @NonNull
                                S entity)

This method issues an explicit update for the given entity. The method differs from save(Object) in that an update will be generated regardless if the entity has been saved previously or not. If the entity has no assigned ID then an exception will be thrown.

Type Parameters:

S - The generic type

Parameters:

entity - The entity to save. Must not be null.

Returns:

The saved entity will never be null.

Throws:

javax.validation.ConstraintViolationException - if the entity is null or invalid.

saveAll

@NonNull
<S extends E> java.lang.Iterable<S> saveAll(@Valid @NotNull @NonNull
                                                     @Valid @NotNull java.lang.Iterable<S> entities)

Saves all given entities, possibly returning new instances representing the saved state.

Type Parameters:

S - The generic type

Parameters:

entities - The entities to saved. Must not be null.

Returns:

The saved entities objects. will never be null.

Throws:

javax.validation.ConstraintViolationException - if the entities are null.

findById

@NonNull
java.util.Optional<E> findById(@NotNull @NonNull
                                        ID id)

Retrieves an entity by its id.

Parameters:

id - The ID of the entity to retrieve. Must not be null.

Returns:

the entity with the given id or Optional#empty() if none found

Throws:

javax.validation.ConstraintViolationException - if the id is null.

existsById

boolean existsById(@NotNull @NonNull
                   ID id)

Returns whether an entity with the given id exists.

Parameters:

id - must not be null.

Returns:

true if an entity with the given id exists, false otherwise.

Throws:

javax.validation.ConstraintViolationException - if the id is null.

findAll

@NonNull
java.lang.Iterable<E> findAll()

Returns all instances of the type.

Returns:

all entities

count

long count()

Returns the number of entities available.

Returns:

the number of entities

deleteById

void deleteById(@NonNull @NotNull
                ID id)

Deletes the entity with the given id.

Parameters:

id - must not be null.

Throws:

javax.validation.ConstraintViolationException - if the entity is null.

delete

void delete(@NonNull @NotNull
            E entity)

Deletes a given entity.

Parameters:

entity - The entity to delete

Throws:

javax.validation.ConstraintViolationException - if the entity is null.

deleteAll

void deleteAll(@NonNull @NotNull
               @NotNull java.lang.Iterable<? extends E> entities)

Deletes the given entities.

Parameters:

entities - The entities to delete

Throws:

javax.validation.ConstraintViolationException - if the entity is null.

deleteAll

void deleteAll()

Deletes all entities managed by the repository.