[Hibernate-JIRA] Created: (HHH-7232) Hibernate ignores 'schema' attribute of @SequenceGenerator for Oracle sequences
by Scott Van Wart (JIRA)
Hibernate ignores 'schema' attribute of @SequenceGenerator for Oracle sequences
-------------------------------------------------------------------------------
Key: HHH-7232
URL: https://hibernate.onjira.com/browse/HHH-7232
Project: Hibernate ORM
Issue Type: Bug
Components: annotations
Affects Versions: 4.1.2
Environment: Hibernate 4.1.2.Final, Oracle 11gR2
Reporter: Scott Van Wart
I wrote a mapping for a sequence such as:
@SequenceGenerator( schema="jaseadm", name="applicantSignupSequence", sequenceName="seq_applicant_signup" )
And the generated SQL is as follows:
DEBUG org.hibernate.SQL - select seq_applicant_signup.nextval from dual
Which leads to this:
WARN o.h.e.jdbc.spi.SqlExceptionHelper - SQL Error: 2289, SQLState: 42000
ERROR o.h.e.jdbc.spi.SqlExceptionHelper - ORA-02289: sequence does not exist
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12 years, 4 months
[Hibernate-JIRA] Created: (HHH-6911) Write DiscriminatorValue to DiscriminatorColumn when combined with InheritanceType#JOINED
by Steve Ebersole (JIRA)
Write DiscriminatorValue to DiscriminatorColumn when combined with InheritanceType#JOINED
-----------------------------------------------------------------------------------------
Key: HHH-6911
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-6911
Project: Hibernate Core
Issue Type: Improvement
Components: annotations, metamodel
Reporter: Steve Ebersole
Priority: Minor
The JPA spec states that {{DiscriminatorColumn}} can be used in conjunction with JOINED inheritence. The only section that seems to deal with this combination is _11.1.10 DiscriminatorColumn Annotation_ where it says
{quote}
For the SINGLE_TABLE mapping strategy, and typically also for the JOINED strategy, the persistence
provider will use a type discriminator column. The DiscriminatorColumn annotation is used to
define the discriminator column for the SINGLE_TABLE and JOINED inheritance mapping strategies.
{quote}
Apparently this is meant to imply that even if providers do not need/use the discriminator for concrete class resolution (reading) they are still expected to write it out to the database. Dunno, thats just what we have been told :)
Anyway, like I said, Hibernate itself does not need the discriminator column/value to interpret the concrete classes. However, in the interest of portability we certainly *could* write it out. Longer term
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12 years, 4 months
[Hibernate-JIRA] Created: (HHH-3809) Improve Memory Management when Post Commit Listeners are enabled
by Shawn Clowater (JIRA)
Improve Memory Management when Post Commit Listeners are enabled
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Key: HHH-3809
URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3809
Project: Hibernate Core
Issue Type: Improvement
Components: core
Affects Versions: 3.3.1
Environment: N/A
Reporter: Shawn Clowater
This is somewhat related to the QueryCache behavior reported under http://opensource.atlassian.com/projects/hibernate/browse/HHH-3028
In this particular case however, it is the fact that when the session factory is configured to have post commit listeners it prevents the garbage collection of any entity that is modified during the session due to the fact that it is referenced in the executions list in the ActionQueue class. This makes any type of memory management by flushing/clearing the session ineffective if you're in the middle of a large batch that is inserting or updating a large amount of data.
i.e in our case we have 4 entities out of possibly 300 or so that we want to notify external systems if they change. However, by simply having the listeners defined they essentially block the remaining entities in the executions.
A potential workaround I guess might be to keep 2 session factories around with a different set of listeners but that seems a bit dirty.
There are 2.5 potential ways that I can think of that might address this.
1 - Have some sort of flag on the session to disable the post commit listeners. The onus would be on the user of the session to disable the listeners in the case where they know they aren't modifying anything that will need post commit handling.
2 - Add the ability to configure the post commit listeners by entity
a)With polymorphism - i.e. you could add a listener based on Object.class and it would apply to all entities and would behave much like it does now. You could also configure to Animal.class and would include Cat and Dog.
b)Without polymorphism - you could add a listener based on a specific entity class and it would only apply to that particular one. You would have an option to specify a null entity and it would default to what is there today.
In my miind, 2a is probably the best albeit slightly more complex to implement but I think would be a good value add.
I don't mind submitting a patch assuming that I'm not so far in left field that I should be committed.
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12 years, 4 months
[Hibernate-JIRA] Created: (ANN-630) @ManyToMany and @Index
by Peter K. Guldbæk (JIRA)
@ManyToMany and @Index
----------------------
Key: ANN-630
URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-630
Project: Hibernate Annotations
Issue Type: Bug
Affects Versions: 3.3.0.ga
Environment: Windows Vista
java version "1.5.0_11"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_11-b03)
Java HotSpot(TM) Client VM (build 1.5.0_11-b03, mixed mode)
Reporter: Peter K. Guldbæk
I have trouble adding an index to a column of a table which is part of a many-to-many property mapping. The following example causes a NullPointerException when generating the DDL (the exception can be seen at the end of my post):
@Entity @Table(name="usr")
public class User implements Serializable
{
@Id @GeneratedValue(strategy=GenerationType.AUTO)
public Integer id;
@ManyToMany(targetEntity=Target.class, cascade={})
@Index(name="fkey_usr_target", columnNames="usr_id")
@JoinTable(name="usr_target",
joinColumns=@JoinColumn(name="usr_id"),
inverseJoinColumns=@JoinColumn(name="target_id"))
public Collection<Target> targets;
}
@Entity @Table(name="target")
public class Target implements Serializable
{
@Id @GeneratedValue(strategy=GenerationType.AUTO)
public Integer id;
@Basic
public String myValue;
}
NullPointerException thrown when an @Index annotation is used with a @ManyToMany:
java.lang.NullPointerException
at org.hibernate.cfg.AnnotationBinder.processElementAnnotations(AnnotationBinder.java:1594)
at org.hibernate.cfg.AnnotationBinder.bindClass(AnnotationBinder.java:733)
at org.hibernate.cfg.AnnotationConfiguration.processArtifactsOfType(AnnotationConfiguration.java:498)
at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:277)
at org.hibernate.cfg.Configuration.buildMappings(Configuration.java:1115)
at org.hibernate.tool.ant.ConfigurationTask.getConfiguration(ConfigurationTask.java:56)
at org.hibernate.tool.ant.HibernateToolTask.getConfiguration(HibernateToolTask.java:299)
at org.hibernate.tool.ant.Hbm2DDLExporterTask.execute(Hbm2DDLExporterTask.java:45)
at org.hibernate.tool.ant.HibernateToolTask.execute(HibernateToolTask.java:183)
at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:288)
at sun.reflect.GeneratedMethodAccessor19.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
at java.lang.reflect.Method.invoke(Method.java:585)
at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105)
at org.apache.tools.ant.Task.perform(Task.java:348)
at org.apache.tools.ant.Target.execute(Target.java:357)
at org.apache.tools.ant.Target.performTasks(Target.java:385)
at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1329)
at org.apache.tools.ant.Project.executeTarget(Project.java:1298)
at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
at org.apache.tools.ant.Project.executeTargets(Project.java:1181)
at org.apache.tools.ant.Main.runBuild(Main.java:698)
at org.apache.tools.ant.Main.startAnt(Main.java:199)
at org.apache.tools.ant.launch.Launcher.run(Launcher.java:257)
at org.apache.tools.ant.launch.Launcher.main(Launcher.java:104)
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12 years, 4 months