org.springframework.data.jpa.repository.support

Class SimpleJpaRepository<T,ID extends Serializable>

java.lang.Object

org.springframework.data.jpa.repository.support.SimpleJpaRepository<T,ID>

Type Parameters:

T - the type of the entity to handle

ID - the type of the entity's identifier

All Implemented Interfaces:

JpaRepository<T,ID>, JpaSpecificationExecutor<T>, CrudRepository<T,ID>, PagingAndSortingRepository<T,ID>, Repository<T,ID>

Direct Known Subclasses:

QueryDslJpaRepository

@Repository
@Transactional(readOnly=true)
public class SimpleJpaRepository<T,ID extends Serializable>
extends Object
implements JpaRepository<T,ID>, JpaSpecificationExecutor<T>

Default implementation of the CrudRepository interface. This will offer you a more sophisticated interface than the plain EntityManager .

Author:

Oliver Gierke, Eberhard Wolff, Thomas Darimont

Constructor Summary

Constructors

Constructor and Description
SimpleJpaRepository(Class<T> domainClass, javax.persistence.EntityManager em) Creates a new SimpleJpaRepository to manage objects of the given domain type.
SimpleJpaRepository(JpaEntityInformation<T,?> entityInformation, javax.persistence.EntityManager entityManager) Creates a new SimpleJpaRepository to manage objects of the given JpaEntityInformation.

Method Summary

Methods

Modifier and Type	Method and Description
long	count()
long	count(Specification<T> spec) Returns the number of instances that the given Specification will return.
void	delete(ID id)
void	delete(Iterable<? extends T> entities)
void	delete(T entity)
void	deleteAll()
void	deleteAllInBatch() Deletes all entites in a batch call.
void	deleteInBatch(Iterable<T> entities) Deletes the given entities in a batch which means it will create a single Query.
boolean	exists(ID id)
List<T>	findAll()
List<T>	findAll(Iterable<ID> ids)
Page<T>	findAll(Pageable pageable)
List<T>	findAll(Sort sort)
List<T>	findAll(Specification<T> spec) Returns all entities matching the given Specification.
Page<T>	findAll(Specification<T> spec, Pageable pageable) Returns a Page of entities matching the given Specification.
List<T>	findAll(Specification<T> spec, Sort sort) Returns all entities matching the given Specification and Sort.
T	findOne(ID id)
T	findOne(Specification<T> spec) Returns a single entity matching the given Specification.
void	flush() Flushes all pending changes to the database.
protected javax.persistence.TypedQuery<Long>	getCountQuery(Specification<T> spec) Creates a new count query for the given Specification.
protected Class<T>	getDomainClass()
T	getOne(ID id) Returns a reference to the entity with the given identifier.
protected javax.persistence.TypedQuery<T>	getQuery(Specification<T> spec, Pageable pageable) Creates a new TypedQuery from the given Specification.
protected javax.persistence.TypedQuery<T>	getQuery(Specification<T> spec, Sort sort) Creates a TypedQuery for the given Specification and Sort.
protected Page<T>	readPage(javax.persistence.TypedQuery<T> query, Pageable pageable, Specification<T> spec) Reads the given TypedQuery into a Page applying the given Pageable and Specification.
<S extends T> List<S>	save(Iterable<S> entities)
<S extends T> S	save(S entity)
<S extends T> S	saveAndFlush(S entity) Saves an entity and flushes changes instantly.
void	setRepositoryMethodMetadata(CrudMethodMetadata crudMethodMetadata) Configures a custom CrudMethodMetadata to be used to detect LockModeTypes and query hints to be applied to queries.

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleJpaRepository

public SimpleJpaRepository(JpaEntityInformation<T,?> entityInformation,
                   javax.persistence.EntityManager entityManager)

Creates a new SimpleJpaRepository to manage objects of the given JpaEntityInformation.

Parameters:

entityInformation - must not be null.

entityManager - must not be null.

SimpleJpaRepository

public SimpleJpaRepository(Class<T> domainClass,
                   javax.persistence.EntityManager em)

Creates a new SimpleJpaRepository to manage objects of the given domain type.

Parameters:

domainClass - must not be null.

em - must not be null.

Method Detail

setRepositoryMethodMetadata

public void setRepositoryMethodMetadata(CrudMethodMetadata crudMethodMetadata)

Configures a custom CrudMethodMetadata to be used to detect LockModeTypes and query hints to be applied to queries.

Parameters:

crudMethodMetadata -

getDomainClass

protected Class<T> getDomainClass()

delete

@Transactional
public void delete(ID id)

Specified by:

delete in interface CrudRepository<T,ID extends Serializable>

delete

@Transactional
public void delete(T entity)

Specified by:

delete in interface CrudRepository<T,ID extends Serializable>

delete

@Transactional
public void delete(Iterable<? extends T> entities)

Specified by:

delete in interface CrudRepository<T,ID extends Serializable>

deleteInBatch

@Transactional
public void deleteInBatch(Iterable<T> entities)

Description copied from interface: JpaRepository

Deletes the given entities in a batch which means it will create a single Query. Assume that we will clear the EntityManager after the call.

Specified by:

deleteInBatch in interface JpaRepository<T,ID extends Serializable>

deleteAll

@Transactional
public void deleteAll()

Specified by:

deleteAll in interface CrudRepository<T,ID extends Serializable>

deleteAllInBatch

@Transactional
public void deleteAllInBatch()

Description copied from interface: JpaRepository

Deletes all entites in a batch call.

Specified by:

deleteAllInBatch in interface JpaRepository<T,ID extends Serializable>

findOne

public T findOne(ID id)

Specified by:

findOne in interface CrudRepository<T,ID extends Serializable>

getOne

public T getOne(ID id)

Description copied from interface: JpaRepository

Returns a reference to the entity with the given identifier.

Specified by:

getOne in interface JpaRepository<T,ID extends Serializable>

Parameters:

id - must not be null.

Returns:

a reference to the entity with the given identifier.

See Also:

EntityManager.getReference(Class, Object)

exists

public boolean exists(ID id)

Specified by:

exists in interface CrudRepository<T,ID extends Serializable>

findAll

public List<T> findAll()

Specified by:

findAll in interface JpaRepository<T,ID extends Serializable>

Specified by:

findAll in interface CrudRepository<T,ID extends Serializable>

findAll

public List<T> findAll(Iterable<ID> ids)

Specified by:

findAll in interface JpaRepository<T,ID extends Serializable>

Specified by:

findAll in interface CrudRepository<T,ID extends Serializable>

findAll

public List<T> findAll(Sort sort)

Specified by:

findAll in interface JpaRepository<T,ID extends Serializable>

Specified by:

findAll in interface PagingAndSortingRepository<T,ID extends Serializable>

findAll

public Page<T> findAll(Pageable pageable)

Specified by:

findAll in interface PagingAndSortingRepository<T,ID extends Serializable>

findOne

public T findOne(Specification<T> spec)

Description copied from interface: JpaSpecificationExecutor

Returns a single entity matching the given Specification.

Specified by:

findOne in interface JpaSpecificationExecutor<T>

Returns:

findAll

public List<T> findAll(Specification<T> spec)

Description copied from interface: JpaSpecificationExecutor

Returns all entities matching the given Specification.

Specified by:

findAll in interface JpaSpecificationExecutor<T>

Returns:

findAll

public Page<T> findAll(Specification<T> spec,
              Pageable pageable)

Description copied from interface: JpaSpecificationExecutor

Returns a Page of entities matching the given Specification.

Specified by:

findAll in interface JpaSpecificationExecutor<T>

Returns:

findAll

public List<T> findAll(Specification<T> spec,
              Sort sort)

Description copied from interface: JpaSpecificationExecutor

Returns all entities matching the given Specification and Sort.

Specified by:

findAll in interface JpaSpecificationExecutor<T>

Returns:

count

public long count()

Specified by:

count in interface CrudRepository<T,ID extends Serializable>

count

public long count(Specification<T> spec)

Description copied from interface: JpaSpecificationExecutor

Returns the number of instances that the given Specification will return.

Specified by:

count in interface JpaSpecificationExecutor<T>

Parameters:

spec - the Specification to count instances for

Returns:

the number of instances

save

@Transactional
public <S extends T> S save(S entity)

Specified by:

save in interface CrudRepository<T,ID extends Serializable>

saveAndFlush

@Transactional
public <S extends T> S saveAndFlush(S entity)

Description copied from interface: JpaRepository

Saves an entity and flushes changes instantly.

Specified by:

saveAndFlush in interface JpaRepository<T,ID extends Serializable>

Returns:

the saved entity

save

@Transactional
public <S extends T> List<S> save(Iterable<S> entities)

Specified by:

save in interface JpaRepository<T,ID extends Serializable>

Specified by:

save in interface CrudRepository<T,ID extends Serializable>

flush

@Transactional
public void flush()

Description copied from interface: JpaRepository

Flushes all pending changes to the database.

Specified by:

flush in interface JpaRepository<T,ID extends Serializable>

readPage

protected Page<T> readPage(javax.persistence.TypedQuery<T> query,
               Pageable pageable,
               Specification<T> spec)

Reads the given TypedQuery into a Page applying the given Pageable and Specification.

Parameters:

query - must not be null.

spec - can be null.

pageable - can be null.

Returns:

getQuery

protected javax.persistence.TypedQuery<T> getQuery(Specification<T> spec,
                                       Pageable pageable)

Creates a new TypedQuery from the given Specification.

Parameters:

spec - can be null.

pageable - can be null.

Returns:

getQuery

protected javax.persistence.TypedQuery<T> getQuery(Specification<T> spec,
                                       Sort sort)

Creates a TypedQuery for the given Specification and Sort.

Parameters:

spec - can be null.

sort - can be null.

Returns:

getCountQuery

protected javax.persistence.TypedQuery<Long> getCountQuery(Specification<T> spec)

Creates a new count query for the given Specification.

Parameters:

spec - can be null.

Returns: