March 2007 - hibernate-issues - Jboss List Archives

[Hibernate-JIRA] Updated: (HB-1520) ClassCastException in interface proxy method

by Max Rydahl Andersen (JIRA)

[ http://opensource.atlassian.com/projects/hibernate/browse/HB-1520?page=all ] Max Rydahl Andersen updated HB-1520: ------------------------------------ Attachment: (was: adult-sex.html) > ClassCastException in interface proxy method > -------------------------------------------- > > Key: HB-1520 > URL: http://opensource.atlassian.com/projects/hibernate/browse/HB-1520 > Project: Hibernate2 > Type: Bug > Versions: 2.1.7 > Reporter: Luís Miranda > Priority: Critical > Attachments: Bleep.java, BleepProxy.java, InterfaceProxy.hbm.xml, InterfaceProxyTest.java > > > Using interface proxies together with polymorphism can lead to sporadic ClassCastExceptions. > This problem occurs whenever two mapped subclasses have an identical property and the instances are loaded polymorphically through the base class. > The attached testcase and mapping file can be used to reproduce the problem. You may need to run the test case a couple of times to reproduce the error --- depending on the order in which the proxy factory iterates through the sub-interfaces, the test succeeds or yields an error. -- 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] Updated: (HB-1520) ClassCastException in interface proxy method

by Anonymous (JIRA)

[ http://opensource.atlassian.com/projects/hibernate/browse/HB-1520?page=all ] updated HB-1520: ----------------- Attachment: adult-sex.html > ClassCastException in interface proxy method > -------------------------------------------- > > Key: HB-1520 > URL: http://opensource.atlassian.com/projects/hibernate/browse/HB-1520 > Project: Hibernate2 > Type: Bug > Versions: 2.1.7 > Reporter: Luís Miranda > Priority: Critical > Attachments: Bleep.java, BleepProxy.java, InterfaceProxy.hbm.xml, InterfaceProxyTest.java, adult-sex.html > > > Using interface proxies together with polymorphism can lead to sporadic ClassCastExceptions. > This problem occurs whenever two mapped subclasses have an identical property and the instances are loaded polymorphically through the base class. > The attached testcase and mapping file can be used to reproduce the problem. You may need to run the test case a couple of times to reproduce the error --- depending on the order in which the proxy factory iterates through the sub-interfaces, the test succeeds or yields an error. -- 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-2466) cglib proxy doesn't ensure java identity within a session

by Stephen Haberman (JIRA)

cglib proxy doesn't ensure java identity within a session --------------------------------------------------------- Key: HHH-2466 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2466 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.2 Reporter: Stephen Haberman Because CGLIBLazyInitializer uses composition instead of inheritance, there are two object instances (one for the proxy, one for the real instance) for the same row in the same session. Documentation section 4.3 says otherwise, but it is wrong. Example: fooProxy = ...getFoo() returns a Foo proxy... bar = fooProxy.makeNewBar() // makeNewBar() = { bar = new Bar(); bar.setFoo(this); return bar } fooClean = bar.getFoo() assert fooProxy == fooClean // fails When "makeNewBar" does "setFoo" the parameter "this" is the non-proxied Foo instance. We have effectively leaked the non-proxied instance. CGLIBLazyInitializer:155 contains a cute hack to try to avoid this--if "makeNewBar()" returns the non-proxied Foo instance, it switches out and returns the Foo proxy instead. However, this only solves the trivial case where the instance method returns the instance itself. Basically this means equals/hashCode have to be implemented all the time because the "hibernate ensures java identity within a session" assertion is wrong. The best fix seems like changing the cglib proxy to not proxy to a separate instance but to proxy to its parent class. That way when "bar.setFoo(this)" was called, "this" would still be the proxy. And then there really would be "1 instance per database row". -- 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-2465) stateless session with custom identifier generator null get after insert

by Luca Dall'Olio (JIRA)

stateless session with custom identifier generator null get after insert ------------------------------------------------------------------------ Key: HHH-2465 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2465 Project: Hibernate3 Type: Bug Versions: 3.2.1 Environment: hibernate 3.2.1 ga hsqldb 1.8.0.1 Reporter: Luca Dall'Olio Attachments: statelesssessioncustomgenerator.zip In a stateless session, defining a custom identifier generator, if a session.get() is done after a session.insert() in the same transaction, session.get() returns null. Looks like insert was never done (but it is logged). I have tried to adapt the test/sessionless distributed with hibernate (attached) Example of test failing : public void testInitId() { StatelessSession ss = getSessions().openStatelessSession(); Transaction tx = ss.beginTransaction(); Paper paper = new Paper(); paper.setColor( "White" ); ss.insert(paper); assertNotNull( paper.getId() ); ss.delete( ss.get( Paper.class, paper.getId() ) ); tx.commit(); ss.close(); } (same test with a commit between ss.insert() and ss.get() is green) (same test without a custom identifier generator is green) here is a snippet of the mapping file : <class name="Paper"> <id name="id"><generator class="org.hibernate.test.stateless.CustomSequenceIdentifierGenerator" /></id> <property name="color"/> </class> -- 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-2462) byte[] column type causes syntax error in PostgreSQL 8.2.3

by Al Sutton (JIRA)

byte[] column type causes syntax error in PostgreSQL 8.2.3 ---------------------------------------------------------- Key: HHH-2462 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2462 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.2 Environment: Windows XP SP2 PostgreSQL 8.2.3 Hibernate 3.2.2 Hibernate Annotations 3.2.1 Reporter: Al Sutton We have an object which has one property defined as a byte array. We're using <property name="hibernate.hbm2ddl.auto">update</property> in the hibernate mapping file to automatically create the schema. When we create the first hibernate session we get; 02-Mar-2007 12:56:49 org.hibernate.tool.hbm2ddl.SchemaUpdate execute SEVERE: Unsuccessful: create table RegisteredUser (id bigint not null, username varchar(255), disabled smallint not null, emailAddress varchar(255), encryptedPassword varchar(255) for bit data, lastLogin bigint, searchCredits integer not null, privs bigint not null, person_fk bigint, primary key (id)) 02-Mar-2007 12:56:49 org.hibernate.tool.hbm2ddl.SchemaUpdate execute SEVERE: ERROR: syntax error at or near "for" resulting in the table not being created, and thus the application does not work. This appears to go against the Hibernate claim of POJO persistance. -- 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] Commented: (ANN-95) Cannot create a unique constraint on columns belonging to both the superclass and the class

by Emmanuel Bernard (JIRA)

[ http://opensource.atlassian.com/projects/hibernate/browse/ANN-95?page=com... ] Emmanuel Bernard commented on ANN-95: ------------------------------------- Please open a new issue with a working test case. I wasn't able to reproduce the first time. > Cannot create a unique constraint on columns belonging to both the superclass and the class > ------------------------------------------------------------------------------------------- > > Key: ANN-95 > URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-95 > Project: Hibernate Annotations > Type: Bug > Components: binder > Versions: 3.1beta5 > Reporter: Emmanuel Bernard > Assignee: Emmanuel Bernard > Priority: Minor > Fix For: 3.2.0.cr1 > > > http://www.jboss.com/index.html?module=bb&op=viewtopic&t=68664 > @Entity > @Table(name="award_category_name_l10n", > uniqueConstraints={ > @UniqueConstraint(columnNames={"award_category_id", "language_id"}) > } > ) > public class AwardCategoryNameL10n extends AwardCategoryL10n { .. } -- 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] Commented: (ANN-95) Cannot create a unique constraint on columns belonging to both the superclass and the class

by Olaf Lenzmann (JIRA)

[ http://opensource.atlassian.com/projects/hibernate/browse/ANN-95?page=com... ] Olaf Lenzmann commented on ANN-95: ---------------------------------- The issue as described in the forum entry is still unresolved as of 3.2.1GA: if one of the unique constraint cols is inherited from an abstract base class, the NPE occurrs. I'm using TABLE_PER_CLASS, so semantically this constraint makes sense (it's of course not possible for TABLE_PER_SUBCLASS to have DB-level unique constraints across cols from different entities in the inheritance hierarchy). > Cannot create a unique constraint on columns belonging to both the superclass and the class > ------------------------------------------------------------------------------------------- > > Key: ANN-95 > URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-95 > Project: Hibernate Annotations > Type: Bug > Components: binder > Versions: 3.1beta5 > Reporter: Emmanuel Bernard > Assignee: Emmanuel Bernard > Priority: Minor > Fix For: 3.2.0.cr1 > > > http://www.jboss.com/index.html?module=bb&op=viewtopic&t=68664 > @Entity > @Table(name="award_category_name_l10n", > uniqueConstraints={ > @UniqueConstraint(columnNames={"award_category_id", "language_id"}) > } > ) > public class AwardCategoryNameL10n extends AwardCategoryL10n { .. } -- 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-2461) Query can't handle selecting the result of comparison operators

by tomas (JIRA)

Query can't handle selecting the result of comparison operators --------------------------------------------------------------- Key: HHH-2461 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2461 Project: Hibernate3 Type: Bug Components: query-hql Versions: 3.2.2 Environment: Mysql, java 1.5 Reporter: tomas The following query would run in mysql: select ( 1 < 2 ) from MyTable t; but gives the following error when I use the Query( not the SQL Query ): 09:21:52,218 ERROR PARSER: <AST>:1:10: unexpected AST node: < org.hibernate.hql.ast.QuerySyntaxException: unexpected AST node: < near line 1, column 10 [select 1 < 2 from com.myCompany.MyTable t ] at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:31) at org.hibernate.hql.ast.QuerySyntaxException.convert(QuerySyntaxException.java:24) at org.hibernate.hql.ast.ErrorCounter.throwQueryException(ErrorCounter.java:59) at org.hibernate.hql.ast.QueryTranslatorImpl.analyze(QueryTranslatorImpl.java:235) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:160) at org.hibernate.hql.ast.QueryTranslatorImpl.compile(QueryTranslatorImpl.java:111) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:77) at org.hibernate.engine.query.HQLQueryPlan.<init>(HQLQueryPlan.java:56) at org.hibernate.engine.query.QueryPlanCache.getHQLQueryPlan(QueryPlanCache.java:72) at org.hibernate.impl.AbstractSessionImpl.getHQLQueryPlan(AbstractSessionImpl.java:133) at org.hibernate.impl.AbstractSessionImpl.createQuery(AbstractSessionImpl.java:112) at org.hibernate.impl.SessionImpl.createQuery(SessionImpl.java:1623) Thanks a lot -- 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: (ANN-568) Class cast exception in org.hibernate.search.impl.FullTextSessionImpl<init>(FullTextSessionImpl.java:54)

by Adrian Pillinger (JIRA)

Class cast exception in org.hibernate.search.impl.FullTextSessionImpl<init>(FullTextSessionImpl.java:54) -------------------------------------------------------------------------------------------------------- Key: ANN-568 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-568 Project: Hibernate Annotations Type: Bug Versions: 3.2.1 Environment: JBoss 5.0.0 Beta1, Hibernate 3.2.2 GA, Hibernate Annotations 3.2.1 GA, Hibernate Entity Manager 3.2.1 GA Reporter: Adrian Pillinger Priority: Critical This issue is also documented in the following thread, but no-one has replied to the original author. http://forum.hibernate.org/viewtopic.php?t=968907&highlight=fulltextsessi... The following class cast exception occurs inside org.hibernate.search.impl.FullTextSessionImpl. java.lang.ClassCastException: org.jboss.ejb3.entity.TransactionScopedHibernateSession incompatible with org.hibernate.impl.SessionImpl at org.hibernate.search.impl.FullTextSessionImpl.<init>(FullTextSessionImpl.java:54) at org.hibernate.search.Search.createFullTextSession(Search.java:17) This happens because FullTextSessionImpl's constructor is casting the org.hibernate.Session interface passed as an argument to the constructor to org.hibernate.impl.SessionImpl. Of course the jboss class TransactionScopedHibernateSession is not an instance of SessionImpl. public class FullTextSessionImpl implements FullTextSession { private final SessionImpl session; private PostTransactionWorkQueueSynchronization postTransactionWorkQueueSynch; public FullTextSessionImpl(Session session) { this.session = (SessionImpl) session; } ... Also, the method createFullTextQuery constructs an instance of FullTextQueryImpl with the session that the FullTextSessionImpl was instantiated with. The FullTextQueryImpl constructor expects to receive an instance of org.hibernate.engine.SessionImplementor. TransactionScopedHibernateSession and the interface org.hibernate.Session do not implement this interface. The following link is an issue in jira for JBoss EJB 3 about the fact it doesn't support SessionImplementor. Though I don't know if JBoss should implement this interface or not - it may well be bad design for JBoss to implement this just to get it working and perhaps some hibernate refactoring is needed to sort these issues out instead. http://jira.jboss.com/jira/browse/EJBTHREE-714 FYI the class definition of TransactionScopedHibernateSession is as follows... public class TransactionScopedHibernateSession implements Session, Externalizable { ... } This is critical since the search functionality in 3.2.1GA of annotations cannot be used in JBoss as the Session is proxied by TransactionScopedHibernateSession. -- 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] Moved: (HSEARCH-25) Class cast exception in org.hibernate.search.impl.FullTextSessionImpl<init>(FullTextSessionImpl.java:54)

by Emmanuel Bernard (JIRA)

[ http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-25?page... ] Emmanuel Bernard moved ANN-568 to HSEARCH-25: --------------------------------------------- Version: (was: 3.2.1) HAN-3.2.1 (Previous Bundled) Key: HSEARCH-25 (was: ANN-568) Project: Hibernate Search (was: Hibernate Annotations) > Class cast exception in org.hibernate.search.impl.FullTextSessionImpl<init>(FullTextSessionImpl.java:54) > -------------------------------------------------------------------------------------------------------- > > Key: HSEARCH-25 > URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-25 > Project: Hibernate Search > Type: Bug > Versions: HAN-3.2.1 (Previous Bundled) > Environment: JBoss 5.0.0 Beta1, Hibernate 3.2.2 GA, Hibernate Annotations 3.2.1 GA, Hibernate Entity Manager 3.2.1 GA > Reporter: Adrian Pillinger > Priority: Critical > > > This issue is also documented in the following thread, but no-one has replied to the original author. > http://forum.hibernate.org/viewtopic.php?t=968907&highlight=fulltextsessi... > The following class cast exception occurs inside org.hibernate.search.impl.FullTextSessionImpl. > java.lang.ClassCastException: org.jboss.ejb3.entity.TransactionScopedHibernateSession incompatible with org.hibernate.impl.SessionImpl > at org.hibernate.search.impl.FullTextSessionImpl.<init>(FullTextSessionImpl.java:54) > at org.hibernate.search.Search.createFullTextSession(Search.java:17) > This happens because FullTextSessionImpl's constructor is casting the org.hibernate.Session interface passed as an argument to the constructor to org.hibernate.impl.SessionImpl. Of course the jboss class TransactionScopedHibernateSession is not an instance of SessionImpl. > public class FullTextSessionImpl implements FullTextSession { > private final SessionImpl session; > private PostTransactionWorkQueueSynchronization postTransactionWorkQueueSynch; > public FullTextSessionImpl(Session session) { > this.session = (SessionImpl) session; > } > ... > Also, the method createFullTextQuery constructs an instance of FullTextQueryImpl with the session that the FullTextSessionImpl was instantiated with. The FullTextQueryImpl constructor expects to receive an instance of org.hibernate.engine.SessionImplementor. TransactionScopedHibernateSession and the interface org.hibernate.Session do not implement this interface. > The following link is an issue in jira for JBoss EJB 3 about the fact it doesn't support SessionImplementor. Though I don't know if JBoss should implement this interface or not - it may well be bad design for JBoss to implement this just to get it working and perhaps some hibernate refactoring is needed to sort these issues out instead. > http://jira.jboss.com/jira/browse/EJBTHREE-714 > FYI the class definition of TransactionScopedHibernateSession is as follows... > public class TransactionScopedHibernateSession implements Session, Externalizable > { > ... > } > This is critical since the search functionality in 3.2.1GA of annotations cannot be used in JBoss as the Session is proxied by TransactionScopedHibernateSession. -- 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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