JpaRepository

   findAll() List<T>

   findAll(Sort)  List<T>

   findAll(Iterable<ID>) List<T>

   save(Iterable<S>)

   flush()  void

   saveAndFlush(S)

   deleteInBatch(Iterable<T>)

   deleteAllInBatch()

   getOne(ID)

   findAll(Sort)

   findAll(Pageable)

   save(S)

   save(Iterable<S>)

   findOne(ID)

   exists(ID)

   findAll()

   findAll(Iterable<ID>)

   count()

   delete(ID)

   delete(T)

   delete(Iterable<? extends T>)

   deleteAll()

JpaSpecificationExecutor<T>

    findOne(Specification<T>)

    findAll(Specification<T>)

    findAll(Specification<T>,Pageable) Page<T>

    findAll(Specification<T>,Sort)

    count(Specification<T>) long