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November 15, 2015 01:19
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複数検索項目、ページネーションに対応した custom Repositoryクラス ※動作検証していません
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| @Repository | |
| public interface UserRepository extends | |
| JpaRepository<User, Long>, | |
| JpaSpecificationExecutor<User>, | |
| UserRepositoryCustom {} | |
| @Repository | |
| public interface UserRepositoryCustom { | |
| public List<User> findUsers(Map<String,Object> params); | |
| } | |
| @Repository | |
| public class UserRepositoryImpl implements UserRepositoryCustom { | |
| @Autowired | |
| EntityManager entityManager; | |
| public List<User> findUsers(Map<String,Object> params) { | |
| StringBilder sql = new StringBilder(); | |
| // params をもとに動的SQLを生成 | |
| sql.append("SELECT c FROM User c WHERE c.name = :name"); | |
| TypedQuery<User> query = entityManager.createQuery(sql, User.class); | |
| for(Map.Entry<String, Object> e : params.entrySet()){ | |
| query.setParameter(e.getKey(), e.getValue()); | |
| } | |
| int pageNumber = 1; | |
| int pageSize = 10; | |
| query.setFirstResult((pageNumber-1) * pageSize); | |
| query.setMaxResults(pageSize); | |
| return query.getResultList(); | |
| } | |
| } | |
| // link | |
| // https://terasolunaorg.github.io/guideline/public_review/ArchitectureInDetail/DataAccessJpa.html#id20 | |
| // http://www.objectdb.com/java/jpa/query/parameter | |
| // http://qiita.com/tag1216/items/55742fdb442e5617f727 | |
| // http://www.baeldung.com/jpa-pagination |
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