JPA Hibernate加入…开…并且

Question

我使用以下查询：

SELECT * FROM phaseinproject as pip JOIN projectinrelease pir 
ON pip.projectInRelease_id = pir.id
JOIN releaseperiod as rp ON pir.release_id = rp.id
JOIN releasestructure as rs ON rs.id = rp.releaseStructure_id
JOIN phaseinreleasestructure as pirs ON pirs.releaseStructure_id = rs.id
JOIN releasephase as rlp ON rlp.id = pirs.phase_id 
AND rlp.id = pip.phase_id 

此查询完全正常。 我得到三个结果（我期望的数量）。

我将此查询转换为以下HQL查询：

            TypedQuery<PhaseInProjectOverview> findPhasesInRelease = em.createQuery("SELECT NEW nl.dashboard.dto.out.PhaseInProjectOverview(phaseInProject.id, phase.name, phaseInProject.startDate, phaseInProject.plannedEndDate, phaseInProject.endDate) FROM PhaseInProject phaseInProject "
                + "JOIN phaseInProject.projectInRelease projectInRelease "
                + "JOIN projectInRelease.release release "
                + "JOIN release.releaseStructure releaseStructure "
                + "JOIN releaseStructure.phaseInReleaseStructures phaseInReleaseStructure "
                + "JOIN phaseInReleaseStructure.phase phase "
                + "WHERE release.id = :releaseId ORDER BY phaseInReleaseStructure.position, phaseInProject.startDate", PhaseInProjectOverview.class);
        findPhasesInRelease.setParameter("releaseId", releaseId);
        return findPhasesInRelease.getResultList();

无论我尝试什么：我都会得到6个结果，因为HQL似乎不支持"JOIN ... ON ... AND ..." sql语法。

有谁知道如何解决这个问题？

编辑：我添加了自己的答案与使用的解决方案。 谢谢大家的答案/指标。

Answer 1

尝试使用with关键字： phaseInReleaseStructure.phase phase WITH phase.id = phaseInProject.phase_id这会导致SQL像releasephase as rlp ON rlp.id = pirs.phase_id AND rlp.id = pip.phase_id

或者，只需在where子句中添加该条件：

... WHERE release.id = :releaseId AND phase.id = phaseInProject.phase_id ... 

Answer 2

我通过额外的WHERE子句解决了我的问题：

phase.id = phaseInProject.phase.id

现在，我得到了预期的结果。 “ WITH”关键字似乎不适用于多个实体。 当我尝试时，出现异常：

HQL error: with-clause referenced two different from-clause elements

当尝试使用“ ON”语法（如JOIN phaseInReleaseStructure.phase phase ON phase.id = phaseInProject.id ，出现另一个错误：

unexpected token: ON near line 1, column 473