조인을 사용하여 매우 단순한 JPQL을 만들려고하는데 성공하지 못했습니다. 사용자 ID가 주어지면 사용자의 가장 최근 로그인 날짜를 얻고 싶습니다. Spring Data JPA + Hibernate를 사용하고 있습니다.JPQL JOIN 쿼리
@Table(name = "activity")
@SuppressWarnings("serial")
public class Activity implements Serializable {
@Id
@GeneratedValue
private Long id;
@Column(name = "date", insertable = true, nullable = false, updatable = false)
@Temporal(TemporalType.TIMESTAMP)
private Date date;
@Column(insertable = true, name = "organization_id", nullable = true, updatable = true, unique = false)
@Basic(optional = true)
private Long organizationId;
@Column(insertable = true, name = "operation", nullable = false, updatable = true, unique = false)
@Basic(optional = false)
private String operation;
//getters and setters
}
그것은 LoginAttempt을 포함하여 다른 테이블의 다수 포함되어 있습니다 :
나는 테이블 활동이 포함 된 MySQL 데이터베이스가@Table(name = "login_attempt")
@SuppressWarnings("serial")
public class LoginAttempt implements Serializable{
@Id
@GeneratedValue
private Long id;
@OneToOne(fetch = FetchType.EAGER, optional = false)
@Basic(optional = false)
@JoinColumn(name = "activity_id", insertable = true, nullable = false, unique = false, updatable = false)
private Activity activity;
@Column(insertable = true, name = "user_id", nullable = true, updatable = true, unique = false)
@Basic(optional = true)
private Long userId;
@Column(insertable = true, name = "user_email", nullable = true, updatable = true, unique = false)
@Basic(optional = true)
private String userEmail;
@Column(insertable = true, name = "login_successful", nullable = false, updatable = true, unique = false)
@Basic(optional = false)
private boolean loginSuccessful;
//getters and setters
}
다른 모든 테이블이라는 컬럼을 사용하여 작업을 참조 "activity_id ".
이것은 하나의 메소드와 @Query 어노테이션이있는 나의 DAO입니다.
public interface MyDAO extends JpaRepository<Activity, Long> {
@Query("SELECT a FROM Activity a, LoginAttempt la JOIN a.id la WHERE la.user_email = (:userId) AND a.date = (SELECT MAX(a.date))")
public Activity findMostRecentLoginForUser(@Param("userId") Long userId);
}
나는 간단한 그것이 작동하는 @query의 모든 문을 선택, 그래서 내가 제대로 데이터베이스에 연결하고있어 다시 모든 것을 얻을 수 있어요합니다. 처음에는 쿼리에 대한 유효성 검사 오류가 많이 발생했지만 지금은 다음과 같은 부분 스택 트레이스가 표시됩니다.
Caused by: java.lang.IllegalArgumentException: Validation failed for query for method public abstract com.domain.Activity com.dao.MyDAO.findMostRecentLoginForUser(java.lang.Long)!
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:97)
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.<init>(SimpleJpaQuery.java:66)
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.fromQueryAnnotation(SimpleJpaQuery.java:169)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$DeclaredQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:114)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$CreateIfNotFoundQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:160)
at org.springframework.data.jpa.repository.query.JpaQueryLookupStrategy$AbstractQueryLookupStrategy.resolveQuery(JpaQueryLookupStrategy.java:68)
at org.springframework.data.repository.core.support.RepositoryFactorySupport$QueryExecutorMethodInterceptor.<init>(RepositoryFactorySupport.java:290)
at org.springframework.data.repository.core.support.RepositoryFactorySupport.getRepository(RepositoryFactorySupport.java:158)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:162)
at org.springframework.data.repository.core.support.RepositoryFactoryBeanSupport.getObject(RepositoryFactoryBeanSupport.java:44)
at org.springframework.beans.factory.support.FactoryBeanRegistrySupport.doGetObjectFromFactoryBean(FactoryBeanRegistrySupport.java:142)
... 44 more
Caused by: java.lang.NullPointerException
at org.hibernate.hql.internal.ast.HqlSqlWalker.createFromJoinElement(HqlSqlWalker.java:393)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.joinElement(HqlSqlBaseWalker.java:3645)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElement(HqlSqlBaseWalker.java:3431)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromElementList(HqlSqlBaseWalker.java:3309)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.fromClause(HqlSqlBaseWalker.java:706)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:562)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:299)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:247)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:250)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:185)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:138)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:105)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:80)
at org.hibernate.engine.query.spi.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:168)
at org.hibernate.internal.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:221)
at org.hibernate.internal.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:199)
at org.hibernate.internal.SessionImpl.createQuery(SessionImpl.java:1778)
at org.hibernate.ejb.AbstractEntityManagerImpl.createQuery(AbstractEntityManagerImpl.java:291)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at org.springframework.orm.jpa.ExtendedEntityManagerCreator$ExtendedEntityManagerInvocationHandler.invoke(ExtendedEntityManagerCreator.java:366)
at com.sun.proxy.$Proxy33.createQuery(Unknown Source)
at org.springframework.data.jpa.repository.query.SimpleJpaQuery.validateQuery(SimpleJpaQuery.java:91)
... 54 more
내 뇌는 튀긴 나는 내가 읽은 예제의 둘레에 내 머리를 얻을 수 없습니다. 어떤 도움을 주셔서 감사합니다. 감사.
Perfect! 내가 바보 인 것을 깨달았을 때 실제로 조인을 사용하지 않았습니다. 답변 해주셔서 감사합니다! :-) – tikka