createNativeQuery - 返回页面

Question

我的存储库有以下自定义实现。

public final EntityManager entityManager;

public ImputacionRepositoryImpl(EntityManager entityManager) {
    this.entityManager = entityManager;
}

@Override
public List<ImputacionData> imputacionesList() {
    Query q = entityManager.createNativeQuery("SELECT " + "empleado.id as empleadoId,"
            + "MAX(imputacion.dia) as dia," + "imputacion.id as id " + "FROM rrhh.empleado empleado "
            + "JOIN rrhh.imputacion imputacion ON imputacion.empleado = empleado.id "
            + "WHERE empleado.id NOT IN (SELECT empleado.id " + "FROM rrhh.empleado empleado "
            + "LEFT JOIN rrhh.imputacion imputacion ON imputacion.empleado = empleado.id " + "WHERE "
            + "(imputacion.dia >= '2017-06-01' AND imputacion.dia <= '2017-10-31') "
            + "GROUP BY empleado.id,imputacion.empleado, imputacion.id) " + "AND true=true "
            + "GROUP BY empleado.id,imputacion.empleado, imputacion.id ORDER BY imputacion.dia DESC");
    List<ImputacionData> imputaciones = q.getResultList();
    return imputaciones;
}

我需要它而不是返回 a List<ImputacionData>， return Page<ImputacionData>，但我不知道是否可能，以及如何做到这一点。

Answer 1

因此，您可以在 Spring 中使用页面实现，在您的情况下，它可能如下所示：

    @Override
    public Page<ImputacionData> imputacionesList() {
    Query q = entityManager.createNativeQuery("SELECT " + "empleado.id as empleadoId,"
            + "MAX(imputacion.dia) as dia," + "imputacion.id as id " + "FROM rrhh.empleado empleado "
            + "JOIN rrhh.imputacion imputacion ON imputacion.empleado = empleado.id "
            + "WHERE empleado.id NOT IN (SELECT empleado.id " + "FROM rrhh.empleado empleado "
            + "LEFT JOIN rrhh.imputacion imputacion ON imputacion.empleado = empleado.id " + "WHERE "
            + "(imputacion.dia >= '2017-06-01' AND imputacion.dia <= '2017-10-31') "
            + "GROUP BY empleado.id,imputacion.empleado, imputacion.id) " + "AND true=true "
            + "GROUP BY empleado.id,imputacion.empleado, imputacion.id ORDER BY imputacion.dia DESC");
    Page<ImputacionData> page = new PageImpl<>(q.getResultList());
    return page;
}