August 2007 - hibernate-issues - Jboss List Archives

[Hibernate-JIRA] Created: (HHH-2429) SQL Character Types Incorrectly mapped to Java objects

by Tyler Van Gorder (JIRA)

SQL Character Types Incorrectly mapped to Java objects ------------------------------------------------------ Key: HHH-2429 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2429 Project: Hibernate3 Type: Bug Components: core Versions: 3.2.1 Environment: Hibernate 3.2.1, Oracle10g Reporter: Tyler Van Gorder We have a work flow that allows the user to enter an arbitrary SQL statement to be executed by our application. We pass those queries through session.createSQLQuery(). We ran into a problem with String literals, which are reported by Oracle (ResultSetMetaData) to be CHAR. Reading the JDBC API, CHAR is a fixed length string. Hibernate is incorrectly mapping this to a Character field. We ended up overriding the Oracle dialect with our own as follows: In our constructor, for a dialect that extends Oracle9iDialect: super() registerColumnType(Types.CHAR, "char($l)" ); registerHibernateType( Types.CHAR, Hibernate.STRING.getName() ); The HibernateType is the crucial one and we are overriding the behavior in the base "Dialect" class, so this appears that it would be a problem for all database variants that don't explicitly change this. Thanks. -- 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

12 years, 7 months

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[Hibernate-JIRA] Created: (HHH-2774) Call ResultTransformer.transformList() even if the list argument is an empty list

by Christian Bauer (JIRA)

Call ResultTransformer.transformList() even if the list argument is an empty list --------------------------------------------------------------------------------- Key: HHH-2774 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2774 Project: Hibernate3 Issue Type: Improvement Components: core Reporter: Christian Bauer Priority: Trivial I have a case where a ResultTransformer is doing all the work in transformTuple() and always returns null from that method. The transformed target state is held internally in the ResultTransformer instance (I basically turn many tuples into one). Now I can't get this state out of the ResultTransformer because transformList() is not called after transformTuple(). It would be better if transformList() is called even if the list of tuples returned by transformTuple() is empty. -- 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

12 years, 7 months

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[Hibernate-JIRA] Created: (EJB-276) Support for CLOB not working for DB2 when table per concrete class is being used

by breako (JIRA)

Support for CLOB not working for DB2 when table per concrete class is being used -------------------------------------------------------------------------------- Key: EJB-276 URL: http://opensource.atlassian.com/projects/hibernate/browse/EJB-276 Project: Hibernate Entity Manager Type: Bug Versions: 3.2.1 Reporter: breako Hi, This came up in the forums: http://forum.hibernate.org/viewtopic.php?p=2344008#2344008 Sample code: Two Pojos @Entity public class Person { private int i; @Identity public int getI() { return i; } public void setI(int i){ this.i = i; } } @Entity public class Employee extends Person{ @Basic(fetch=FetchType.LAZY) @Lob public String getClobAttr() { return clobAttr; } public void setClobAttr(String clobAttr) { this.clobAttr = clobAttr; } } Simple test: public static void main (String args[]) { Query queryImpl = em.createQuery(" from Person"); List list = queryImpl.getResultList(); } This will generate SQL select person0_.clobAttr as clobAttr1 from (select nullif(0,0) as clobAttr from TPerson union all select clobAttr from TEmployee) person0_ which chucks the exception: DB2 SQL error: SQLCODE: -415, SQLSTATE: 42825, SQLERRMC: null I think the SQL hibernate should generate should be: select person0_.clobAttr as clobAttr1 from (select cast(null as CLOB) as clobAttr from TPerson union all select clobAttr from TEmployee) person0_ -- 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

12 years, 7 months

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[Hibernate-JIRA] Created: (HHH-2225) NPE when eager fetching joined component with native SQL query

by Christian Bauer (JIRA)

NPE when eager fetching joined component with native SQL query -------------------------------------------------------------- Key: HHH-2225 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2225 Project: Hibernate3 Type: Bug Components: query-sql Versions: 3.2.0.ga Reporter: Christian Bauer Priority: Minor Item -> many-to-one -> User -> joined component -> billingAddress This: result = session.createSQLQuery("select {i.*}, {u.*}, {ba.*} from ITEM i" + " join USERS u on i.SELLER_ID = u.USER_ID" + " left join BILLING_ADDRESS ba on u.USER_ID = ba.USER_ID" + " where u.USERNAME = :uname") .addEntity("i", Item.class) .addJoin("u", "i.seller") .addJoin("ba", "u.billingAddress") fails with: java.lang.NullPointerException at org.hibernate.loader.DefaultEntityAliases.<init>(DefaultEntityAliases.java:37) at org.hibernate.loader.custom.sql.SQLQueryReturnProcessor.generateCustomReturns(SQLQueryReturnProcessor.java:283) at org.hibernate.loader.custom.sql.SQLCustomQuery.<init>(SQLCustomQuery.java:129) at org.hibernate.engine.query.NativeSQLQueryPlan.<init>(NativeSQLQueryPlan.java:43) at org.hibernate.engine.query.QueryPlanCache.getNativeSQLQueryPlan(QueryPlanCache.java:114) at org.hibernate.impl.AbstractSessionImpl.getNativeSQLQueryPlan(AbstractSessionImpl.java:137) at org.hibernate.impl.AbstractSessionImpl.list(AbstractSessionImpl.java:142) at org.hibernate.impl.SQLQueryImpl.list(SQLQueryImpl.java:150) -- 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

12 years, 9 months

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[Hibernate-JIRA] Created: (HHH-2449) Lazy loading for one-to-one asociations

by jose (JIRA)

Lazy loading for one-to-one asociations --------------------------------------- Key: HHH-2449 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2449 Project: Hibernate3 Type: New Feature Components: core Versions: 3.2.2 Environment: Hibernate 3.2.2 Reporter: jose After read "Some explanations on lazy loading" and my tests I found a lossing feature in Hibernate (3.2.2). one-to-one with lazy="proxy"_____________________________________________ Hibernate ALWAYS launch selects to know if one-to-one is null or can be proxied. one-to-one with lazy="no-proxy"__________________________________________ Instrumentation allows to hibernate modify the getter to allows lazy loading on demand: * but allways initialize ALL no-proxy relations (with first getter call) -> must initialize ONLY the requested property * never auto-initialize FETCH joins, ALWAYS doit on demand (if opened session) -> must auto-initialize ONLY the FETCHED property note: Can submit a fix for this? How? NEW FEATURE: one-to-one with lazy="proxy" without multiple SELECTS______ If Hibernate adds join, for all one-to-one relations, to get the foreign-key of other tables, can check it to create a proxy or null. note: that hibernate adds joins for hierarchy, why not for one-to-one relations? This solution avoids: * 'multiple subselects' after first select * 'instrumentation' of bytecode -- 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

12 years, 9 months

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[Hibernate-JIRA] Created: (ANN-614) @WhereJoinTable doesn't work with @ManyToOne

by Victor (JIRA)

@WhereJoinTable doesn't work with @ManyToOne -------------------------------------------- Key: ANN-614 URL: http://opensource.atlassian.com/projects/hibernate/browse/ANN-614 Project: Hibernate Annotations Issue Type: Bug Affects Versions: 3.3.0.ga Reporter: Victor @ManyToOne( fetch=FetchType.LAZY ) @JoinTable(name="CATEGORY_PRODUCT", uniqueConstraints = @UniqueConstraint(columnNames = {"PDID", "CATID"}), joinColumns = @JoinColumn(name="PDID"), inverseJoinColumns = @JoinColumn(name="CATID") ) @WhereJoinTable(clause="CATMAIN=1") protected Category getMainCategory() { return mainCategory; } protected void setMainCategories(Category mainCategory) { this.mainCategory = mainCategory; } Best regards, Victor -- 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

12 years, 9 months

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[Hibernate-JIRA] Created: (HHH-2646) Informix 10 dialect with BLOB/CLOB support

by Thomas Much (JIRA)

Informix 10 dialect with BLOB/CLOB support ------------------------------------------ Key: HHH-2646 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2646 Project: Hibernate3 Issue Type: Improvement Components: core Affects Versions: 3.2.4.sp1 Environment: Informix 10 Reporter: Thomas Much Priority: Minor We discovered that Informix 10 works well with mapping types "blob" and "clob" if we use our own dialect that's simply derived from the existing Informix dialect by adding the two missing types: public class Informix10Dialect extends InformixDialect { public Informix10Dialect() { super(); registerColumnType( Types.BLOB, "blob" ); registerColumnType( Types.CLOB, "clob" ); } } We suggest adding this new dialect to Hibernate Core. (This is similar to issue HHH-2523, but here "clob" is mapped, too.) -- 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

12 years, 10 months

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[Hibernate-JIRA] Created: (HHH-2059) Section 19.2 of the documentation does not show Ehcache as supporting clusters. It does.

by Greg Luck (JIRA)

Section 19.2 of the documentation does not show Ehcache as supporting clusters. It does. ----------------------------------------------------------------------------------------- Key: HHH-2059 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2059 Project: Hibernate3 Type: Bug Components: documentation Versions: 3.2.0 cr1, 3.2.0.cr2, 3.2.0.cr3, 3.2.0.cr4 Reporter: Greg Luck Priority: Minor Section 19.2 of the documentation does not show Ehcache as supporting clusters. It does. The only reason I am asking for this is that people are confused about it and are asking me questions over at the ehcache project. e.g. see the following email to the list. From: p.perrucci(a)gmail.com Subject: [ehcache-list] Using ehcache as a clustered cache in hibernate3 Date: 6 September 2006 6:29:21 PM GMT+10:00 To: ehcache-list(a)lists.sourceforge.net Hi all, current version of ehcache implements distributed caching but hibernate3 docs says that ehcache is not cluster safe. Anyone know the reason why it's not possible to use ehcache in such a scenario? Thanks Paolo ------------------------------------------------------------------------- Using Tomcat but need to do more? Need to support web services, security? Get stuff done quickly with pre-integrated technology to make your job easier Download IBM WebSphere Application Server v.1.0.1 based on Apache Geronimo http://sel.as-us.falkag.net/sel?cmd=lnk&kid=120709&bid=263057&dat=121642_... ehcache-list mailing list ehcache-list(a)lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/ehcache-list -- 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

12 years, 10 months

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[Hibernate-JIRA] Created: (HSEARCH-35) Look for log and exception strategy

by Emmanuel Bernard (JIRA)

Look for log and exception strategy ----------------------------------- Key: HSEARCH-35 URL: http://opensource.atlassian.com/projects/hibernate/browse/HSEARCH-35 Project: Hibernate Search Type: Task Components: mapping, query, engine, directory provider Reporter: Emmanuel Bernard Priority: Minor Fix For: 3.0.0.beta2 -- 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

12 years, 10 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

12 years, 11 months

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hibernate-issues August 2007