I was trying to fetch an entities association and have that fully initialized (will be serialized to JSON):
SELECT u.groups FROM User u WHERE u.id = ?1
Applying a Named/Ad Hoc Fetch Graph yields an Exception. E.g. for this Graph:
\{code:java}
EntityGraph<Group> eg = em.createEntityGraph(Group.class);
eg.addAttributeNodes("permissions");
\{code}
I get:
{quote}org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list \ [FromElement \ {explicit,collection join,fetch join,fetch non-lazy properties,classAlias=u,role=com.example.assocFetchGraph.persistence.User.permissions,tableName= \ {none},tableAlias=permission3_,origin=null,columns= \ {,className=null}}]{quote}
That is because both classes have a `permissions` property.
Expected behavior would be, that the Fetch Graph's attributes would be resolved relative to Group, not User. (But the JPA spec doesn't seem to be very clear here).
I have created a reproducing example: [ https://github.com/cptwunderlich/assocEntityGraphMRE |https://github.com/cptwunderlich/assocEntityGraphMRE]
We had a discussion about this on Zulip #hibernate-user "EntityGraph resolution"
I also created a StackOverflow question: [ https://stackoverflow.com/questions/63015923/jpa-select-association-and-use-namedentitygraph |https://stackoverflow.com/questions/63015923/jpa-select-association-and-use-namedentitygraph]
I provde an excerpt of the code here for your convenience:
\ { \ {@Entity
public class User \ {
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Enumerated(EnumType.STRING)
@ElementCollection(targetClass = Permission.class)
@CollectionTable(name = "USERS_PERMISSIONS", joinColumns = @JoinColumn(name = "uid"))
private Set<Permission> permissions = EnumSet.of(Permission.FOO);
@ManyToMany(fetch = FetchType.LAZY)
private Set<Group> groups = new HashSet<>();
}
@Entity
@NamedEntityGraph(name = Group.ENTITY_GRAPH,
attributeNodes = \ {
@NamedAttributeNode("permissions")
})
public class Group \ {
public static final String ENTITY_GRAPH = "group-with-permissions";
@Id
@GeneratedValue(strategy = GenerationType.AUTO)
private Long id;
@Enumerated(EnumType.STRING)
@ElementCollection(targetClass = Permission.class)
@CollectionTable(
name = "GROUPS_PERMISSIONS",
joinColumns = @JoinColumn(name = "gid")
)
private Set<Permission> permissions = EnumSet.noneOf(Permission.class);
}
// Query:
List res = em.createQuery("SELECT u.groups FROM User u WHERE u.id = ?1")
.setParameter(1, u.getId())
.setHint(GraphSemantic.FETCH.getJpaHintName(), em.getEntityGraph(Group.ENTITY_GRAPH))
.getResultList();}}
Stack Trace is:
j
{quote}ava.lang.IllegalArgumentException: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list \ [FromElement \ {explicit,collection join,fetch join,fetch non-lazy properties,classAlias=u,role=com.example.assocFetchGraph.persistence.User.permissions,tableName= \ {none},tableAlias=permission3_,origin=null,columns= \ {,className=null}}] \ [SELECT u.groups FROM com.example.assocFetchGraph.persistence.User u WHERE u.id = ?1]
at org.hibernate.internal.ExceptionConverterImpl.convert(ExceptionConverterImpl.java:138)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1542)
at org.hibernate.query.Query.getResultList(Query.java:165)
at com.example.assocFetchGraph.AssocFetchGraphApplicationTests.fetchAssocWithNamedFetchGraph(AssocFetchGraphApplicationTests.java:48)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.base/java.lang.reflect.Method.invoke(Method.java:566)
at org.junit.platform.commons.util.ReflectionUtils.invokeMethod(ReflectionUtils.java:686)
at org.junit.jupiter.engine.execution.MethodInvocation.proceed(MethodInvocation.java:60)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$ValidatingInvocation.proceed(InvocationInterceptorChain.java:131)
at org.junit.jupiter.engine.extension.TimeoutExtension.intercept(TimeoutExtension.java:149)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestableMethod(TimeoutExtension.java:140)
at org.junit.jupiter.engine.extension.TimeoutExtension.interceptTestMethod(TimeoutExtension.java:84)
at org.junit.jupiter.engine.execution.ExecutableInvoker$ReflectiveInterceptorCall.lambda$ofVoidMethod$0(ExecutableInvoker.java:115)
at org.junit.jupiter.engine.execution.ExecutableInvoker.lambda$invoke$0(ExecutableInvoker.java:105)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain$InterceptedInvocation.proceed(InvocationInterceptorChain.java:106)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.proceed(InvocationInterceptorChain.java:64)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.chainAndInvoke(InvocationInterceptorChain.java:45)
at org.junit.jupiter.engine.execution.InvocationInterceptorChain.invoke(InvocationInterceptorChain.java:37)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:104)
at org.junit.jupiter.engine.execution.ExecutableInvoker.invoke(ExecutableInvoker.java:98)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.lambda$invokeTestMethod$6(TestMethodTestDescriptor.java:212)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.invokeTestMethod(TestMethodTestDescriptor.java:208)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:137)
at org.junit.jupiter.engine.descriptor.TestMethodTestDescriptor.execute(TestMethodTestDescriptor.java:71)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:135)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at java.base/java.util.ArrayList.forEach(ArrayList.java:1540)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.invokeAll(SameThreadHierarchicalTestExecutorService.java:38)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$5(NodeTestTask.java:139)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$7(NodeTestTask.java:125)
at org.junit.platform.engine.support.hierarchical.Node.around(Node.java:135)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.lambda$executeRecursively$8(NodeTestTask.java:123)
at org.junit.platform.engine.support.hierarchical.ThrowableCollector.execute(ThrowableCollector.java:73)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.executeRecursively(NodeTestTask.java:122)
at org.junit.platform.engine.support.hierarchical.NodeTestTask.execute(NodeTestTask.java:80)
at org.junit.platform.engine.support.hierarchical.SameThreadHierarchicalTestExecutorService.submit(SameThreadHierarchicalTestExecutorService.java:32)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestExecutor.execute(HierarchicalTestExecutor.java:57)
at org.junit.platform.engine.support.hierarchical.HierarchicalTestEngine.execute(HierarchicalTestEngine.java:51)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:248)
at org.junit.platform.launcher.core.DefaultLauncher.lambda$execute$5(DefaultLauncher.java:211)
at org.junit.platform.launcher.core.DefaultLauncher.withInterceptedStreams(DefaultLauncher.java:226)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:199)
at org.junit.platform.launcher.core.DefaultLauncher.execute(DefaultLauncher.java:132)
at com.intellij.junit5.JUnit5IdeaTestRunner.startRunnerWithArgs(JUnit5IdeaTestRunner.java:69)
at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list \ [FromElement \ {explicit,collection join,fetch join,fetch non-lazy properties,classAlias=u,role=com.example.assocFetchGraph.persistence.User.permissions,tableName= \ {none},tableAlias=permission3_,origin=null,columns= \ {,className=null}}] \ [SELECT u.groups FROM com.example.assocFetchGraph.persistence.User u WHERE u.id = ?1]
at org.hibernate.QueryException.generateQueryException(QueryException.java:120)
at org.hibernate.QueryException.wrapWithQueryString(QueryException.java:103)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:220)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:144)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:113)
at org.hibernate.engine.query.spi.HQLQueryPlan.<init>(HQLQueryPlan.java:78)
at org.hibernate.query.internal.AbstractProducedQuery.makeQueryParametersForExecution(AbstractProducedQuery.java:1372)
at org.hibernate.query.internal.AbstractProducedQuery.doList(AbstractProducedQuery.java:1567)
at org.hibernate.query.internal.AbstractProducedQuery.list(AbstractProducedQuery.java:1533)
... 65 more
Caused by: org.hibernate.QueryException: query specified join fetching, but the owner of the fetched association was not present in the select list \ [FromElement \ {explicit,collection join,fetch join,fetch non-lazy properties,classAlias=u,role=com.example.assocFetchGraph.persistence.User.permissions,tableName= \ {none},tableAlias=permission3_,origin=null,columns= \ {,className=null}}]
at org.hibernate.hql.internal.ast.tree.SelectClause.initializeExplicitSelectClause(SelectClause.java:217)
at org.hibernate.hql.internal.ast.HqlSqlWalker.useSelectClause(HqlSqlWalker.java:1026)
at org.hibernate.hql.internal.ast.HqlSqlWalker.processQuery(HqlSqlWalker.java:794)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.query(HqlSqlBaseWalker.java:689)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.selectStatement(HqlSqlBaseWalker.java:325)
at org.hibernate.hql.internal.antlr.HqlSqlBaseWalker.statement(HqlSqlBaseWalker.java:273)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:276)
at org.hibernate.hql.internal.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:192)
... 71 more{quote}
The repository also contains a test case where I JOIN FETCH permissions and that works. Interestingly, in my actual code, I have and additional JOIN FETCH for a ManyToOne and I get the above Exception for that additional property. |
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