带有 EmbeddedId 的 hibernate 条件

Question

我有我的实体:

@Entity
@Table(name="performances")
@AssociationOverrides({
    @AssociationOverride(name="id.player", joinColumns=@JoinColumn(name="player_id")),
    @AssociationOverride(name="id.season", joinColumns=@JoinColumn(name="season_id"))
})
public class Performance extends AbstractEntity<PerformanceID> {

    private static final long serialVersionUID = 1L;

    @EmbeddedId
    @Getter @Setter
    private PerformanceID id;
    @Getter @Setter
    private int goals;

    public Player getPlayer(){
        return id.getPlayer();
    }

    public Season getSeason(){
        return id.getSeason();
    }

和:

@Embeddable
public class PerformanceID implements Serializable {

    private static final long serialVersionUID = 1L;

    @ManyToOne(fetch=FetchType.LAZY, targetEntity=Player.class)
    @JoinColumn(name="player_id")
    @Getter @Setter
    private Player player;
    @ManyToOne(fetch=FetchType.LAZY, targetEntity=Season.class)
    @JoinColumn(name="season_id")
    @Getter @Setter
    private Season season;

如何选择玩家名为“克劳迪奥”的表现记录？在 HQL 中，它可以正常工作:

Query query = getSession().createQuery("from Performance where id.player.name = 'Claudio'");
return query.list();

但我需要通过 Criteria API 来完成。以下代码将失败:

Criteria criteria = getSession().createCriteria(Performance.class);
criteria.add(Restrictions.ilike("id.player.name", "Claudio"));
return criteria.list();

org.hibernate.QueryException: could not resolve property: id.player.name of: pl.andrzejcichon.criterionlazydatamodel.entities.Performance at org.hibernate.persister.entity.AbstractPropertyMapping.propertyException(AbstractPropertyMapping.java:83) at org.hibernate.persister.entity.AbstractPropertyMapping.toColumns(AbstractPropertyMapping.java:98) at org.hibernate.persister.entity.BasicEntityPropertyMapping.toColumns(BasicEntityPropertyMapping.java:61) at org.hibernate.persister.entity.AbstractEntityPersister.toColumns(AbstractEntityPersister.java:1912) at org.hibernate.loader.criteria.CriteriaQueryTranslator.getColumns(CriteriaQueryTranslator.java:523) at org.hibernate.loader.criteria.CriteriaQueryTranslator.findColumns(CriteriaQueryTranslator.java:538) at org.hibernate.criterion.LikeExpression.toSqlString(LikeExpression.java:80) at org.hibernate.loader.criteria.CriteriaQueryTranslator.getWhereCondition(CriteriaQueryTranslator.java:419) at org.hibernate.loader.criteria.CriteriaJoinWalker.(CriteriaJoinWalker.java:123) at org.hibernate.loader.criteria.CriteriaJoinWalker.(CriteriaJoinWalker.java:92) at org.hibernate.loader.criteria.CriteriaLoader.(CriteriaLoader.java:93) at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1599) at org.hibernate.internal.CriteriaImpl.list(CriteriaImpl.java:374) at pl.andrzejcichon.criterionlazydatamodel.repository.impl.PerformanceDatabaseRepository.customList(PerformanceDatabaseRepository.java:29) at pl.andrzejcichon.criterionlazydatamodel.repository.impl.PerformanceDatabaseRepositoryTest.test(PerformanceDatabaseRepositoryTest.java:24) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source) at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:45) at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15) at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:42) at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:20) at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:74) at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:83) at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:72) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231) at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:47) at org.junit.runners.ParentRunner$3.run(ParentRunner.java:231) at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:60) at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:229) at org.junit.runners.ParentRunner.access$000(ParentRunner.java:50) at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:222) at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61) at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71) at org.junit.runners.ParentRunner.run(ParentRunner.java:300) at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174) at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50) at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390) at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)

另一种尝试:

Criteria criteria = createCriteria();
criteria.createAlias("id.player", "player");
criteria.add(Restrictions.ilike("player.name", "Claudio"));
return criteria.list();

将生成查询:

Hibernate: select this_.player_id as player2_1_0_, this_.season_id as season3_1_0_, this_.goals as goals1_0_ from performances this_ where player1_.name ilike ?

但它会因 SQLGrammarException 失败:“表 player1_ 缺少 FROM 子句”

Answer 1

您的映射不正确。安 EmbeddableId类应包含 @Id (因此 Serializable )值，而不是映射或复杂类型。您应该将您的映射移动到您的实体类，然后只在 EmbbedableId 中包含它们的 id。类(class)。请参阅以下示例(来自 JPA 2.2 规范)

@Embeddable
public class DependentId {
    String name;
    long empPK;   // corresponds to PK type of Employee
}

@Entity
public class Dependent {
    @EmbeddedId DependentId id;

    // id attribute mapped by join column default
    @MapsId("empPK") // maps empPK attribute of embedded id
    @ManyToOne Employee emp;
}