February 2011 - hibernate-issues - Jboss List Archives

[Hibernate-JIRA] Created: (ANN-777) Map key column is included in the PK but is not forced not-null

by Emmanuel Bernard (JIRA)

Map key column is included in the PK but is not forced not-null --------------------------------------------------------------- Key: ANN-777 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-777 Project: Hibernate Annotations Issue Type: Bug Components: binder Reporter: Emmanuel Bernard Assignee: Hardy Ferentschik I think forcing not-null is the right approach. This needs some investigation though -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

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[Hibernate-JIRA] Created: (HHH-3031) Include "FOR READ ONLY" hint in non-locking DB2 statements

by Steve Finch (JIRA)

Include "FOR READ ONLY" hint in non-locking DB2 statements ---------------------------------------------------------- Key: HHH-3031 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3031 Project: Hibernate3 Issue Type: Improvement Components: core Affects Versions: 3.2.5 Environment: 3.2.5, DB2/UDB 8.1+ Reporter: Steve Finch As per the DB2 documentation: http://publib.boulder.ibm.com/infocenter/db2luw/v8/index.jsp?topic=/com.i... The FOR READ ONLY clause indicates that the result table is read-only and therefore the cursor cannot be referred to in Positioned UPDATE and DELETE statements. FOR FETCH ONLY has the same meaning. For result tables in which updates and deletes are allowed, specifying FOR READ ONLY (or FOR FETCH ONLY) can possibly improve the performance of FETCH operations by allowing the database manager to do blocking. For example, in programs that contain dynamic SQL statements without the FOR READ ONLY or ORDER BY clause, the database manager might open cursors as if the FOR UPDATE clause were specified. It is recommended, therefore, that the FOR READ ONLY clause be used to improve performance, except in cases where queries will be used in positioned UPDATE or DELETE statements. A read-only result table must not be referred to in a Positioned UPDATE or DELETE statement, whether it is read-only by nature or specified as FOR READ ONLY (FOR FETCH ONLY). The aforementioned improvement can be achieved by applying "FOR READ ONLY" when other locking hints are not specified. Patch to be uploaded soon. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-5771) PersistentBag.remove() and removeAll() load the whole collection

by Dobes Vandermeer (JIRA)

PersistentBag.remove() and removeAll() load the whole collection ---------------------------------------------------------------- Key: HHH-5771 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5771 Project: Hibernate Core Issue Type: Bug Components: core Affects Versions: 3.5.5 Reporter: Dobes Vandermeer When removing an entity from the database, it is a requirement in hibernate that you remove the entity from any persistent collections it is in so that you don't get errors about transient objects being referenced by a collection. However, calling remove() on a persistent collection seems to load the whole collection into memory. The use of very large (too big to load all at once) lazy collections is apparently not well supported in hibernate because it is difficult to use them without loading the whole collection into memory rather than load it incrementally. Nevertheless, it is possible to request subsets of collections and having the ability to remove() without loading the lazy collection would be a bonus for those of us who do use large lazy collections that way. Here is the offending code: {code} public boolean remove(Object o) { initialize( true ); if ( bag.remove( o ) ) { dirty(); return true; } else { return false; } } {/code} -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-5671) Apply entity-mode information to the logical model

by Steve Ebersole (JIRA)

Apply entity-mode information to the logical model -------------------------------------------------- Key: HHH-5671 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-5671 Project: Hibernate Core Issue Type: Sub-task Reporter: Steve Ebersole -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-4975) ManyToOne and referencedColumnName and MappedSuperclass (2 Levels) => org.hibernate.AnnotationException: referencedColumnNames ... not mapped to a single property

by Christian Fritschi (JIRA)

ManyToOne and referencedColumnName and MappedSuperclass (2 Levels) => org.hibernate.AnnotationException: referencedColumnNames ... not mapped to a single property ------------------------------------------------------------------------------------------------------------------------------------------------------------------ Key: HHH-4975 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-4975 Project: Hibernate Core Issue Type: Bug Components: annotations Affects Versions: 3.3.2 Environment: Hibernate version 3.3.2.GA, HSQLDB 1.8.0.10 Reporter: Christian Fritschi Priority: Critical Attachments: startTestDb.rar, ukMapping.rar, UkMappingTest.java Level 1 (superClass) ------- @MappedSuperclass public abstract class AbstractMasterUk ... @Id private int id; .... @Column(name="MASTER_ID", nullable = false, length=50) private String masterId; Level 2 (superClass) ------- @Entity @Inheritance(strategy=InheritanceType.SINGLE_TABLE) @Table(name="MASTER_UK") @DiscriminatorColumn(name="DOMAIN", discriminatorType=DiscriminatorType.STRING) public class MasterUkBase extends AbstractMasterUk .... Parent-Class ------------ @Entity @org.hibernate.annotations.Entity(mutable = false) @DiscriminatorValue(MasterUk1.DOMAIN) public class MasterUk1 extends MasterUkBase ... Child-Class ----------- @Entity @Table(name="DETAIL_UK") public class DetailUk implements Serializable { @Id private int id; @ManyToOne(optional=false) @JoinColumn(name="MASTER", nullable=true, referencedColumnName="MASTER_ID") private MasterUk1 master; Result: org.hibernate.AnnotationException: referencedColumnNames(MASTER_ID) of annotations.playground.delta.ukMapping.DetailUk.master referencing annotations.playground.delta.ukMapping.MasterUk1 not mapped to a single property at org.hibernate.cfg.BinderHelper.createSyntheticPropertyReference(BinderHelper.java:180) at org.hibernate.cfg.ToOneFkSecondPass.doSecondPass(ToOneFkSecondPass.java:88) at org.hibernate.cfg.AnnotationConfiguration.processEndOfQueue(AnnotationConfiguration.java:456) at org.hibernate.cfg.AnnotationConfiguration.processFkSecondPassInOrder(AnnotationConfiguration.java:438) at org.hibernate.cfg.AnnotationConfiguration.secondPassCompile(AnnotationConfiguration.java:309) at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1333) at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867) ..... -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

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[Hibernate-JIRA] Created: (HV-372) Add section to method-level validation to the HV reference guide

by Gunnar Morling (JIRA)

Add section to method-level validation to the HV reference guide ---------------------------------------------------------------- Key: HV-372 URL: http://opensource.atlassian.com/projects/hibernate/browse/HV-372 Project: Hibernate Validator Issue Type: Sub-task Components: documentation Reporter: Gunnar Morling Assignee: Gunnar Morling Fix For: 4.2.0 -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HSEARCH-679) Entity whose related entity collection is updated causes loading of @ContainedIn entities

by Tom Waterhouse (JIRA)

Entity whose related entity collection is updated causes loading of @ContainedIn entities ----------------------------------------------------------------------------------------- Key: HSEARCH-679 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-679 Project: Hibernate Search Issue Type: Bug Affects Versions: 3.2.1, 3.4.0 Environment: Hibernate 3.6.1-SNAPSHOT/Hibernate Search 3.4.0-SNAPSHOT and Hibernate 3.5.6/Hibernate Search 3.2.1 Reporter: Tom Waterhouse This problem seems related to HSEARCH-361. An entity that references another entity as @ContainedIn is causing the load of entities related to the other entity. Using the model below, the update of the collection of D instances in the class C causes the load of related classes B and A. public class A { @Field private String name; @IndexEmbedded private B } public class B { @ContainedIn private A a; @IndexEmbedded private C c; } public class C { @ContainedIn private Collection<B> b; // NOT INDEXED private Collection<D> d; } public class D { public String value; } -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-3495) CollectionAction instances can consume considerable memory in large transactions unnecessarily

by Tim Downey (JIRA)

CollectionAction instances can consume considerable memory in large transactions unnecessarily ---------------------------------------------------------------------------------------------- Key: HHH-3495 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3495 Project: Hibernate Core Issue Type: Improvement Reporter: Tim Downey Attachments: CollectionActionPatch.zip Hi, We're doing some fairly heavy duty batch processing using Hibernate 3.3.1. In doing so, we're basically paging over large chunks of entities where we flush and clear the session around pages. We do not commit between pages. We may be processing hundreds of thousands of entities over pages of ten to twenty thousand each. We're clearing the session around pages in attempt to free up memory that is no longer necessary. We have found that subtypes of CollectionAction get added to a list of Executable in the ActionQueue when there are collection changes processed. These CollectionActions are held until transaction complete and are not released on flush or clear of the session. Furthermore, the CollectionAction instances hold references to those collections that have changed even after the entities have been evicted from the session. In our case, this was causing Hibernation to hold on to several hundred MB of RAM until transaction commit. I've supplied a small patch that doesn't require the CollectionAction to hang on to the entities themselves until the transaction boundary. We're showing considerably improvement in memory utilization as a result. I'm hoping that you consider this patch for inclusion in a future release. The change was basically to change the ActionQueue's list of Executables used in after transaction completion, to a separate type, AfterTransactionCompletionExecutable. This new type allows some decoupling in the other subclasses of Executable to hold references to fewer resources and save considerable memory when the transaction sizes are quite large. Regards, Tim -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-2169) L2 Cache and Long transactions Memory Leak : OutOfMemoryException

by Sami Dalouche (JIRA)

L2 Cache and Long transactions Memory Leak : OutOfMemoryException ----------------------------------------------------------------- Key: HHH-2169 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2169 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.0.ga Environment: [b]Hibernate version:[/b] Hibernate Entity Manager 3.2.0, with Hibernate Core 3.2.0 and Hibernate Annotations 3.2.0 [b]Mapping documents:[/b] Annotations [b]Full stack trace of any exception that occurs:[/b] Memory Heap Exception [b]Name and version of the database you are using:[/b] PosgreSQL 8.1 Reporter: Sami Dalouche Summary --------- When enabling L2 Cache (with either OScache and EhCache, both with a limitation on the max #of instances, so the problem shouldn't come from the cache manager), Hibernate cannot have long running transactions, otherwise, it results in a Memory Heap Exception... The problem does NOT happen if the L2 Cache is disabled ! Details ---------- - Configure the code to run in ONE transaction - Have a huge loop that inserts 2 million entries that are cacheable (@Cache(usage = CacheConcurrencyStrategy.NONSTRICT_READ_WRITE)) - flush() and clear() every 1000 entries, to periodically flush the cache => None of the entries are garbage collected. => Using a profiler, it is possible to trace the owning objects of my domain classes to : - org.hibernate.action.EntityInsertAction ("instance" variable) - array / List (variable elementData) - variable "executions" in object .. class org.hibernate.engine.ActionQueue Remarks : - If the Query Cache is disabled, and the objects being inserted are NOT cacheable (no @Cache annotation), there is no problem - If the Query Cache is enabled, then, no matter whether the objects being inserted are cacheable or not, The entries are never garbage collected, and I get an OutOfMemoryException. (I see NO relationship between the Query Cache and my objects. I never query the objects, only save them !!) -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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[Hibernate-JIRA] Created: (HHH-3195) session.clear() is not effective when use_query_cache is true

by James Berry (JIRA)

session.clear() is not effective when use_query_cache is true ------------------------------------------------------------- Key: HHH-3195 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-3195 Project: Hibernate3 Issue Type: Bug Affects Versions: 3.2.6 Environment: 3.2.6.ga, MySQL5 Reporter: James Berry As discussed in detail in http://forum.hibernate.org/viewtopic.php?t=944918, performing many inserts while use_query_cache is enabled will eventually cause an out of memory condition, even if the session is periodically flushed and cleared. That forum thread describes a potential root cause for this problem. Nobody from the Hibernate team has responded regarding the forum thread, even though it's been alive for three years now! Note that an answer to "disable the query cache" is not a good solution to the problem, as we need the query cache elsewhere. If it were possible to disable the query cache for a particular session, that would be fine, but I see no way do that. -- This message is automatically generated by JIRA. - If you think it was sent incorrectly contact one of the administrators: http://opensource.atlassian.com/projects/hibernate/secure/Administrators.... - For more information on JIRA, see: http://www.atlassian.com/software/jira

14 years, 9 months

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hibernate-issues February 2011