@ManytoMany w JPA. Błąd zapytania

0
@Entity
@NamedQuery(name="User.findAll", query="SELECT u FROM User u")
public class User implements Serializable {
	private static final long serialVersionUID = 1L;

	@Id
	@GeneratedValue(strategy=GenerationType.IDENTITY)
	private int iduser;

	@Column(name="`user_email`")
	private String userEmail;

	@Column(name="user_name")
	private String userName;

	@Column(name="user_surname")
	private String userSurname;


	//bi-directional many-to-one association to Ailment
	@OneToMany(mappedBy="user")
	@JsonManagedReference
	private List<Ailment> ailments;

	//bi-directional many-to-one association to UserRole
	@ManyToOne
	@JoinColumn(name="user_role_iduser_role")
	@JsonManagedReference
	private UserRole userRole;

	//bi-directional many-to-many association to Group
	@ManyToMany
	@JoinTable(
		name="user_groups"
		, joinColumns={
			@JoinColumn(name="user_iduser")
			}
		, inverseJoinColumns={
			@JoinColumn(name="group_idgroup")
			}
		)
	private List<Group> groups;

	public User() {
	}
@Entity
@NamedQuery(name="Group.findAll", query="SELECT g FROM Group g")
public class Group implements Serializable {
	private static final long serialVersionUID = 1L;

	@Id
	@GeneratedValue(strategy=GenerationType.IDENTITY)
	private int idgroup;

	@Column(name="group_description")
	private String groupDescription;

	@Column(name="group_name")
	private String groupName;

	//bi-directional many-to-many association to User
	@ManyToMany(mappedBy="groups")
	private List<User> users;

	public Group() {
	}

Szukam odpowiedzi w jaki sposób mogę napisać zapytanie, aby otrzymać grupy które należą do konkretnego użytkownika. Konstruując zapytanie w poniższy sposób występuje błąd:

@Repository
public interface SqlUserTaskRepository extends UserTaskRepository, JpaRepository<User, Integer> {
    @Query("select b from User b join fetch b.groups where b.userName = :name")
    User getUser(@Param("name") String userName);
}

java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'group group2_ on groups1_.group_idgroup=group2_.idgroup where user0_.user_nam...' at line 1
	at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:120) ~[mysql-connector-java-8.0.26.jar:8.0.26]
	at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:122) ~[mysql-connector-java-8.0.26.jar:8.0.26]
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeInternal(ClientPreparedStatement.java:953) ~[mysql-connector-java-8.0.26.jar:8.0.26]
	at com.mysql.cj.jdbc.ClientPreparedStatement.executeQuery(ClientPreparedStatement.java:1003) ~[mysql-connector-java-8.0.26.jar:8.0.26]
	at com.zaxxer.hikari.pool.ProxyPreparedStatement.executeQuery(ProxyPreparedStatement.java:52) ~[HikariCP-4.0.3.jar:na]
	at com.zaxxer.hikari.pool.HikariProxyPreparedStatement.executeQuery(HikariProxyPreparedStatement.java) ~[HikariCP-4.0.3.jar:na]
	at org.hibernate.engine.jdbc.internal.ResultSetReturnImpl.extract(ResultSetReturnImpl.java:57) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.getResultSet(Loader.java:2297) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2050) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.executeQueryStatement(Loader.java:2012) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.doQuery(Loader.java:948) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:349) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.doList(Loader.java:2843) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.doList(Loader.java:2825) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2657) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.Loader.list(Loader.java:2652) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:506) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.hql.internal.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:400) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.engine.query.spi.HQLQueryPlan.performList(HQLQueryPlan.java:219) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.internal.SessionImpl.list(SessionImpl.java:1414) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1636) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1604) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.hibernate.query.internal.AbstractProducedQuery.getSingleResult(AbstractProducedQuery.java:1652) ~[hibernate-core-5.4.32.Final.jar:5.4.32.Final]
	at org.springframework.data.jpa.repository.query.JpaQueryExecution$SingleEntityExecution.doExecute(JpaQueryExecution.java:196) ~[spring-data-jpa-2.5.4.jar:2.5.4]
	at org.springframework.data.jpa.repository.query.JpaQueryExecution.execute(JpaQueryExecution.java:88) ~[spring-data-jpa-2.5.4.jar:2.5.4]
	at org.springframework.data.jpa.repository.query.AbstractJpaQuery.doExecute(AbstractJpaQuery.java:155) ~[spring-data-jpa-2.5.4.jar:2.5.4]
	at org.springframework.data.jpa.repository.query.AbstractJpaQuery.execute(AbstractJpaQuery.java:143) ~[spring-data-jpa-2.5.4.jar:2.5.4]
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.doInvoke(RepositoryMethodInvoker.java:137) ~[spring-data-commons-2.5.4.jar:2.5.4]
	at org.springframework.data.repository.core.support.RepositoryMethodInvoker.invoke(RepositoryMethodInvoker.java:121) ~[spring-data-commons-2.5.4.jar:2.5.4]
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.doInvoke(QueryExecutorMethodInterceptor.java:159) ~[spring-data-commons-2.5.4.jar:2.5.4]
	at org.springframework.data.repository.core.support.QueryExecutorMethodInterceptor.invoke(QueryExecutorMethodInterceptor.java:138) ~[spring-data-commons-2.5.4.jar:2.5.4]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.data.projection.DefaultMethodInvokingMethodInterceptor.invoke(DefaultMethodInvokingMethodInterceptor.java:80) ~[spring-data-commons-2.5.4.jar:2.5.4]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.9.jar:5.3.9]
	at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.9.jar:5.3.9]
	at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.9.jar:5.3.9]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.dao.support.PersistenceExceptionTranslationInterceptor.invoke(PersistenceExceptionTranslationInterceptor.java:137) ~[spring-tx-5.3.9.jar:5.3.9]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.data.jpa.repository.support.CrudMethodMetadataPostProcessor$CrudMethodMetadataPopulatingMethodInterceptor.invoke(CrudMethodMetadataPostProcessor.java:145) ~[spring-data-jpa-2.5.4.jar:2.5.4]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.aop.interceptor.ExposeInvocationInterceptor.invoke(ExposeInvocationInterceptor.java:97) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.9.jar:5.3.9]
	at org.springframework.aop.framework.JdkDynamicAopProxy.invoke(JdkDynamicAopProxy.java:215) ~[spring-aop-5.3.9.jar:5.3.9]
	at com.sun.proxy.$Proxy101.getUser(Unknown Source) ~[na:na]
	at com.physio.node.webservice.controller.UserTaskController.findGroup(UserTaskController.java:41) ~[classes/:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
	at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:64) ~[na:na]
	at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
	at java.base/java.lang.reflect.Method.invoke(Method.java:564) ~[na:na]
	at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:197) ~[spring-web-5.3.9.jar:5.3.9]
	at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:141) ~[spring-web-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:106) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:895) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:808) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:87) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:1064) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:963) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:1006) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at org.springframework.web.servlet.FrameworkServlet.doGet(FrameworkServlet.java:898) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:655) ~[tomcat-embed-core-9.0.52.jar:4.0.FR]
	at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:883) ~[spring-webmvc-5.3.9.jar:5.3.9]
	at javax.servlet.http.HttpServlet.service(HttpServlet.java:764) ~[tomcat-embed-core-9.0.52.jar:4.0.FR]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:227) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53) ~[tomcat-embed-websocket-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.9.jar:5.3.9]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.9.jar:5.3.9]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.9.jar:5.3.9]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:119) ~[spring-web-5.3.9.jar:5.3.9]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:542) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:357) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:382) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:893) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1726) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.52.jar:9.0.52]
	at java.base/java.lang.Thread.run(Thread.java:832) ~[na:na]

Dodatkowo chciałbym zapytać czy można stworzyć zapytanie które dałoby opisywany przeze mnie wynik, poprzez "gotowe" zapytania z JPA REPO. Tworząc zapytanie List<Group> findAllByUsers_Iduser(int username); również wyrzuca błąd.

1

Konstruując zapytanie w poniższy sposób występuje błąd

Zazwyczaj warto taki błąd wrzucić.

1
  1. Co ma z tym wspólnego Spring? o_O Przecież to JPA
  2. Jaki błąd?
3

Ok ja w tym kodzie widzę całkiem sporo problemów:

  1. Używasz JPA a to rak
  2. Masz klasę która jest zarówno klasą z JPA i ma jacksonowe adnotacje, a to sugeruje jakieś encja na twarz i pchasz
  3. Masz w klasie JPA powiązania do List<T> a nie Set<T>.
  4. Nie bardzo rozumiem co ty robisz w tym swoim query, bo próbujesz wyciągnąć obiekt User a piszesz coś o jakichś grupach. JPA pasuje jak pięść do nosa jeśli chcesz robić query które wyciągają dane z bazy, bo JPA było projektowane pod wyciąganie z bazy obiektów. Da sie to zrobić, ale w takiej chwili trzeba sobie zadać pytanie po co w ogóle mamy tu to JPA.

Moja rada:

  1. zaorać to
  2. wyrzucić JPA
  3. wrzucić jakieś Spring JDBC Template i odpalać normalne query jak człowiek, takie które zwrócą dokładnie to czego potrzebujesz
4

java.sql.SQLSyntaxErrorException: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'group group2_ on groups1_.group_idgroup=group2_.idgroup where user0_.user_nam...' at line 1

Czy group nie jest słowem kluczowym w mariaDB? (Zgaduję nigdy MySQLa/MariaBD nie uzywałem). Ciekawe. PostgreSQL i Oracle powinieny sobie z tym poradzić bo tam można nazwy umieścić w ""

2

Kolego używasz słowa zastrzeżonego (keyword) jakim jest "group" , uzywane przy group by - on mysi ze ma grupowanie robic tam, nazwij Group ,np. MyGroup czy cos i sproboj wtedy

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