September 2007 - hibernate-issues

[Hibernate-JIRA] Created: (HHH-2840) Externalizing named HQL queries with DML is impossible

by Dimitri Lubenskyy (JIRA)

Externalizing named HQL queries with DML is impossible ------------------------------------------------------ Key: HHH-2840 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2840 Project: Hibernate3 Issue Type: Bug Environment: Hibernate Core 3.2.5 Reporter: Dimitri Lubenskyy Externalizing the update HQL query into the XML file e.g. .... </class> <query name="hqlResetNotificationDatePlc"> <![CDATA[update ServiceEvents se set se.notificationNeeded=0 where se.notificationNeeded=1]]> </query> </hibernate-mapping> Throws the exception: org.hibernate.hql.ast.ErrorCounter: line 1:1: unexpected token: hqlResetNotificationDateRc line 1:1: unexpected token: hqlResetNotificationDateRc at org.hibernate.hql.antlr.HqlBaseParser.statement(HqlBaseParser.java:171) at org.hibernate.hql.ast.QueryTranslatorImpl.parse(QueryTranslatorImpl.java:248) at org.hibernate.hql.ast.QueryTranslatorImpl.doCompile(QueryTranslatorImpl.java:157) 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) -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2842) Problem with instantiating components

by Lanna Kim (JIRA)

Problem with instantiating components ------------------------------------- Key: HHH-2842 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2842 Project: Hibernate3 Issue Type: Improvement Components: core Affects Versions: 3.2.5 Environment: Hibernate 3.2.5ga, DB2 8 Reporter: Lanna Kim Attachments: quickfix.zip, school.zip Hi, I am working on a project migrating a legacy application into J2EE environment using Hibernate. Although it has fairly complicated class hierarchy and table structures, we have managed to migrate most of features successfully, thanks to the flexibility of Hibernate. (Thank you for the great work!) However, we have one issue with instantiating dependent objects. Sometimes only parent class knows how to instantiate its dependent objects properly, so these objects need to be created by their parent class. For example, the following persistent class Student has a dependent object studentInfo, which is mapped as as component in the mapping file. -------------------------------------------------- public class Student { private Long id; private StudentInfo studentInfo; public Student() { // instantiate StudentInfo object here with some additional information. studentInfo = new StudentInfo(SchoolHelper.lookupType("C")); } // ... } -------------------------------------------------- public class StudentInfo { private String description; private transient String typeA; private transient String typeB; public StudentInfo() { } public StudentInfo(String type) { this.typeA = SchoolHelper.getTypeA(type); this.typeB = SchoolHelper.getTypeB(type); } // ... -------------------------------------------------- <class name="school.Student" table="STUDENT"> <id name="id" column="STUDENT_ID"> <generator class="native"/> </id> <component name="studentInfo" class="school.StudentInfo"> <property name="description" column="SI_DESC" /> </component> </class> -------------------------------------------------- Only 'description' member is mapped to a database column and other transient members of StudentInfo aren't. These transient members can be set only by using the information passed from its parent class, Student. However, when a Student object is loaded from database, this information (typeA and typeB) becomes null, because the default constructor StudentInfo() is used by Hibernate, and then Student.setStudentInfo() is called to replace the existing (but properly instantiated) studentInfo object. I know it is a Hibernate requirement for all persistent classes to have no-arg default constructors. This is fine, but is it true for all dependent objects as well? Some of our depedent objects are contained in both persistent classes and business logic classes and it is very difficult to separate them. It would be great if Hibernate supports either of following features: 1) <property> can accept a dotted notaton for its name, so that we can access directly the member of the depedent object without having <component>. i.e. <property name="studentInfo.description" column="SI_DESC" />  or, 2) <component> has an option to indicate to reuse the existing instance instead of always creating a new one. i.e. <component name="studentInfo" reuse="true" class="school.StudentInfo> ... </component>  I have attached student.zip to indicate this issue and quickfix.zip for the (rough) hibernate fix so that ComponentType reuses the existing value unless it is null. Any advice or comment would be appreciated. -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2841) DeadLock at UpdateTimeStampsCache

by Eugene Batogov (JIRA)

DeadLock at UpdateTimeStampsCache ---------------------------------- Key: HHH-2841 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2841 Project: Hibernate3 Issue Type: Bug Affects Versions: 3.2.5 Environment: - Gentoo Linux (x86); - JDK-1.6 (SUN and BEA) - JBoss-4.2.1 - Hibernate-3.2.5 - JBoss Cache-1.4.1 Reporter: Eugene Batogov Priority: Critical Hi all ! [b]My configuration: - Gentoo Linux (x86); - JDK-1.6 (SUN and BEA) - JBoss-4.2.1 - Hibernate-3.2.5 - JBoss Cache-1.4.1[/b] ------------------------------ I have degrade performance during stress testing (jMeter). I use QueryCache. But during strong loading all thread are blocking at [b]UpdateTimeStampsCache [/b] That this maybe ! Thanks in advance -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2870) Set views entitys as "imutable" to get some minor performance optimizations

by Diego Pires Plentz (JIRA)

Set views entitys as "imutable" to get some minor performance optimizations --------------------------------------------------------------------------- Key: HHH-2870 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2870 Project: Hibernate3 Issue Type: Improvement Components: metamodel Reporter: Diego Pires Plentz If a view is mapped to an Entity, we could use it as "immutable", because "This allows Hibernate to make some minor performance optimizations". -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2475) Split lib directory

by Christian Bauer (JIRA)

Split lib directory ------------------- Key: HHH-2475 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2475 Project: Hibernate3 Type: Improvement Components: build Reporter: Christian Bauer I've read again that Hibernate "requires 40 JARs" and that the fantastic Oracle reference implementation does not. This nonsense can only be stopped by splitting the lib/ subdirectory of our distribution into /lib/required, lib/optional, and lib/buildtime. Consider for 3.3. -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2859) Introduce a 'Work' API for user to perform JDBC work

by Steve Ebersole (JIRA)

Introduce a 'Work' API for user to perform JDBC work ---------------------------------------------------- Key: HHH-2859 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2859 Project: Hibernate3 Issue Type: Improvement Components: core Reporter: Steve Ebersole Assignee: Steve Ebersole Fix For: 3.3 This is a partial follow-on for the deprecation of Session#connection() -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2682) support for H2 in DialectFactory

by Dan Allen (JIRA)

support for H2 in DialectFactory -------------------------------- Key: HHH-2682 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2682 Project: Hibernate3 Issue Type: Improvement Components: core Affects Versions: 3.2.4.sp1 Environment: Hibernate 3 EJB3 JPA Reporter: Dan Allen For some reason, the H2 database is not included in the dialect factory map, even though there is a Hibernate dialect available for this database. Please add the following to org.hibernate.dialect.DialectFactory MAPPERS.put( "H2", new VersionInsensitiveMapper( "org.hibernate.dialect.H2Dialect" ) ); -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2070) Improvement for DialectFactory

by Martin Renner (JIRA)

Improvement for DialectFactory ------------------------------ Key: HHH-2070 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2070 Project: Hibernate3 Type: Patch Components: core Versions: 3.2.0.cr4 Reporter: Martin Renner Attachments: DialectFactory.patch I would like to have more entries for autodetecting DB2 dialects. According to HHH-1467 I created a patch. At the moment, DialectFactory knows just "DB2/NT". We are currently using DB2Dialect for "DB2/6000" and "DB2/LINUX", but we would like to have Hibernate autodetect these dialects. So the patch simply adds two new lines to DialectFactory. It would be really helpful for us, if this patch would make it into 3.1.x and 3.2.x. The patch works for 3.1.3 and 3.2.0cr4. -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2839) Don't use dummy dual table for hsqldb

by David Balažic (JIRA)

Don't use dummy dual table for hsqldb ------------------------------------- Key: HHH-2839 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2839 Project: Hibernate3 Issue Type: Patch Affects Versions: 3.2.5 Environment: hibernate 3.2.5 hsqldb 1.8.0.1 Reporter: David Balažic Attachments: HSQLDialect.diff This removes creation and use of a dual_foo table for each sequence. It is a simplification and also solves failures due to white space before the sequence name in the mapping XML : <id name="id" type="long" column="ID"> <generator class="sequence"> <param name="sequence"> seq_bar </param> will fail in the old code : "create table dual_" + sequenceName + " (zero integer)" which would give the following bad SQL : create table dual_ seq_bar (zero integer) -- 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

18 years, 2 months

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[Hibernate-JIRA] Created: (HHH-2849) Better error logging in IdentifierGeneratorFactory.java

by Antony Stubbs (JIRA)

Better error logging in IdentifierGeneratorFactory.java ------------------------------------------------------- Key: HHH-2849 URL: http://opensource.atlassian.com/projects/hibernate/browse/HHH-2849 Project: Hibernate3 Issue Type: Patch Components: core Affects Versions: 3.2.4.sp1, 3.3 Reporter: Antony Stubbs Priority: Minor Attachments: IdentifierGeneratorFactory.java.patch When specifying an incorrect id generator class in the hibernate mapping file, the following error messages are produced for the exception: Caused by: java.lang.RuntimeException: Exception building SessionFactory: could not instantiate id generator Caused by: org.hibernate.MappingException: could not instantiate id generator Caused by: org.hibernate.MappingException: could not interpret id generator strategy: com.x.persistence.sdfhibernate.SomeIdentityGenerator This doesn't show which mapping it's talking about. The patch I submitted slightly improves the message by adding the entity name: Caused by: org.hibernate.MappingException: could not instantiate id generator for entity com.x.persistence.hibernate.EntityClass admitedly I haven't tested it yet, because I am unable to get maven to build hibernate. but i'm working on that now (unable to download org.codehaus.mojo:antlr-maven-plugin:pom:2.0-SNAPSHOT) -- 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

18 years, 2 months

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hibernate-issues September 2007