程序包 net.qimooc.commons.service

接口 SpecificationQueryService<M,E>

所有已知实现类:

CrudBaseService

public interface SpecificationQueryService<M,E>

方法概要

修饰符和类型	方法	说明
default long	count(org.springframework.data.jpa.domain.Specification<E> spec)	Returns the number of instances that the given Specification will return.
default java.util.List<M>	findAll(org.springframework.data.jpa.domain.Specification<E> spec)	Returns all entities matching the given Specification.
default org.springframework.data.domain.Page<M>	findAll(org.springframework.data.jpa.domain.Specification<E> spec, org.springframework.data.domain.Pageable pageable)	Returns a Page of entities matching the given Specification.
default java.util.List<M>	findAll(org.springframework.data.jpa.domain.Specification<E> spec, org.springframework.data.domain.Sort sort)	Returns all entities matching the given Specification and Sort.
default java.util.Optional<M>	findOne(org.springframework.data.jpa.domain.Specification<E> spec)	Returns a single entity matching the given Specification or Optional.empty() if none found.
<MAPPER extends EntityMapper<M,E>> MAPPER	getEntityMapper()
<REPO extends org.springframework.data.jpa.repository.JpaSpecificationExecutor<E>> REPO	getRepository()

方法详细资料

getRepository

<REPO extends org.springframework.data.jpa.repository.JpaSpecificationExecutor<E>> REPO getRepository()

getEntityMapper

<MAPPER extends EntityMapper<M,E>> MAPPER getEntityMapper()

findOne

default java.util.Optional<M> findOne(@Nullable
                                      org.springframework.data.jpa.domain.Specification<E> spec)

Returns a single entity matching the given Specification or Optional.empty() if none found.

参数:

spec - can be null.

返回:

never null.

抛出:

org.springframework.dao.IncorrectResultSizeDataAccessException - if more than one entity found.

findAll

default java.util.List<M> findAll(@Nullable
                                  org.springframework.data.jpa.domain.Specification<E> spec)

Returns all entities matching the given Specification.

参数:

spec - can be null.

返回:

never null.

findAll

default org.springframework.data.domain.Page<M> findAll(@Nullable
                                                        org.springframework.data.jpa.domain.Specification<E> spec,
                                                        org.springframework.data.domain.Pageable pageable)

Returns a Page of entities matching the given Specification.

参数:

spec - can be null.

pageable - must not be null.

返回:

never null.

findAll

default java.util.List<M> findAll(@Nullable
                                  org.springframework.data.jpa.domain.Specification<E> spec,
                                  org.springframework.data.domain.Sort sort)

Returns all entities matching the given Specification and Sort.

参数:

spec - can be null.

sort - must not be null.

返回:

never null.

count

default long count(@Nullable
                   org.springframework.data.jpa.domain.Specification<E> spec)

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

参数:

spec - the Specification to count instances for. Can be null.

返回:

the number of instances.