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  1. JBoss Enterprise Application Platform
  2. JBEAP-22235

[GSS](7.4.z) HHH-14608 Merge causes StackOverflow when JPA proxy compliance is enabled

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      A "many to many" association (e.g. between Employee and Task in the example below) is defined using an intermediate entity (e.g. TaskParticipant in the example below) with an @Embeddable key that maps a ManyToOne association with both classes.

      @Entity
public class Employee {
        @Id
        private String name;

        @OneToMany(mappedBy = "taskParticipantPK.employee", cascade = CascadeType.ALL, orphanRemoval = true)
        private List<TaskParticipant> taskParticipants;
}

@Entity
public class Task {
        @Id
        private long id;

        @OneToMany(mappedBy = "taskParticipantPK.task", cascade=CascadeType.ALL)
        private List <TaskParticipant> taskParticipants;
}

@Entity
public class TaskParticipant {
        @EmbeddedId
        private TaskParticipantPK taskParticipantPK = new TaskParticipantPK();
}

@Embeddable
@Table(name = "TaskParticipant")
public class TaskParticipantPK implements Serializable {
        private static final long serialVersionUID = 1;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "employee")
        private Employee employee;

        @ManyToOne(fetch = FetchType.LAZY)
        @JoinColumn(name = "task")
        private Task task;
}

      During merge of a detached entity on one side of the association (e.g. Employee), a non-terminating, recursive load loop is initiated resulting in an eventual java.lang.StackOverflowError. The repeating portion of the stack is shown below:

      ... java.lang.StackOverflowError
        ...
        at org.hibernate.internal.SessionImpl.fireLoadNoChecks(SessionImpl.java:1277)
        at org.hibernate.internal.SessionImpl.immediateLoad(SessionImpl.java:1119)
        at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:178)
        at org.hibernate.proxy.AbstractLazyInitializer.getIdentifier(AbstractLazyInitializer.java:89)
        at org.hibernate.type.EntityType.getHashCode(EntityType.java:372)
        at org.hibernate.type.ComponentType.getHashCode(ComponentType.java:242)
        at org.hibernate.engine.spi.EntityKey.generateHashCode(EntityKey.java:61)
        at org.hibernate.engine.spi.EntityKey.<init>(EntityKey.java:54)
        at org.hibernate.internal.AbstractSharedSessionContract.generateEntityKey(AbstractSharedSessionContract.java:524)
        at org.hibernate.loader.Loader.extractKeysFromResultSet(Loader.java:879)
        at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:729)
        at org.hibernate.loader.Loader.processResultSet(Loader.java:1002)
        at org.hibernate.loader.Loader.doQuery(Loader.java:960)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:351)
        at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:321)
        at org.hibernate.loader.Loader.loadEntity(Loader.java:2379)
        at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:64)
        at org.hibernate.loader.entity.AbstractEntityLoader.load(AbstractEntityLoader.java:54)
        at org.hibernate.persister.entity.AbstractEntityPersister.load(AbstractEntityPersister.java:4289)
        at org.hibernate.event.internal.DefaultLoadEventListener.loadFromDatasource(DefaultLoadEventListener.java:597)
        at org.hibernate.event.internal.DefaultLoadEventListener.doLoad(DefaultLoadEventListener.java:565)
        at org.hibernate.event.internal.DefaultLoadEventListener.load(DefaultLoadEventListener.java:226)
        at org.hibernate.event.internal.DefaultLoadEventListener.doOnLoad(DefaultLoadEventListener.java:122)
        at org.hibernate.event.internal.DefaultLoadEventListener.onLoad(DefaultLoadEventListener.java:93)
        ...

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          is cloned by

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-21937 [GSS](7.3.z) HHH-14608 - Merge causes StackOverflow when JPA proxy compliance is enabled

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified
          is incorporated by

          Bug - A problem that impairs or prevents the functions of the product. JBEAP-21937 [GSS](7.3.z) HHH-14608 - Merge causes StackOverflow when JPA proxy compliance is enabled

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Verified

          Component Upgrade - A task tracking an update to a bundled component or revision of component upstream of the project. JBEAP-21277 [GSS](7.4.z) Upgrade Hibernate ORM from 5.3.20.Final-redhat-00001 to 5.3.21.Final-redhat-00001

          • Major - To be worked after higher priority work items are addressed. When the severity is high and the effort to change it is low to moderate, this term is chosen. Issues in this category likely have an existing workaround but implementation or execution may be non-trivial.
          • Closed
          incorporates

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              gbadner@redhat.com Gail Badner (Inactive)
              rhn-support-sfikes Stephen Fikes (Inactive)
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                Updated:
                Resolved: