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Author Message
Goonie
 Post subject: many-to-one returning null on Hibernate3
PostPosted: Sat Apr 02, 2005 5:03 am 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
Hello everyone,

I've got a rather basic problem with Hibernate3: When loading an entity with session.load(), the many-to-one association to another entitiy is initialized with "null".

In my case, I've got a Markt (market) that has a masterSprache (master language). The following code fragment outputs

Quote:
class Markt[id=6]
null


I have triple checked that there is sensible data in my database tables.

I know that session.load can only return a proxy instead of the "real" entity. It is my understanding that if the session is still open, the proxy is 100% transparent. It should not return null on a many-to-one property.

The strange thing is that when I add a Markt with a masterSprache programmatically via Hibernate, it is correctly persisted.

The same example worked fine on Hibernate 2.1.8, as far as I can remember. I have carefully read the migration guide (and the forums), but did not find any clue.

What am I doing wrong?

(I can provide an isolated eclipse project demonstrating my problem)

Best regards,

Andreas

Hibernate version:
3.0 final

Mapping documents:
Markt.hbm.xml:
Code:
<hibernate-mapping>

   <class name="Markt" table="markt">

      <id name="id" type="integer" column="id" unsaved-value="null">
         <generator class="identity" />
      </id>

      <many-to-one name="masterSprache" column="master_sprache_id"
         not-null="true" />

   </class>

</hibernate-mapping>


Sprache.hbm.xml:
Code:
<hibernate-mapping>

   <class name="Sprache" table="sprache">

      <id name="id" type="integer" column="id" unsaved-value="null">
         <generator class="identity" />
      </id>

   </class>

</hibernate-mapping>


Code between sessionFactory.openSession() and session.close():
Code:
        Session session = sf.openSession();
        // System.out.println(session.createCriteria(Markt.class).list());
        Markt markt = (Markt) session.load(Markt.class, new Integer(6));
        System.out.println(markt);
        Sprache sprache = (Sprache) markt.getMasterSprache();
        System.out.println(sprache);
        session.close();


Full stack trace of any exception that occurs:
No exceptions

Name and version of the database you are using:
MySQL 4.1.10 (same Problem on Oracle 8)

The generated SQL (show_sql=true):
Quote:
select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=?


Debug level Hibernate log excerpt:
Quote:
02.04.2005 10:49:04 org.hibernate.cfg.Environment <clinit>
INFO: Hibernate 3.0
02.04.2005 10:49:04 org.hibernate.cfg.Environment <clinit>
INFO: hibernate.properties not found
02.04.2005 10:49:04 org.hibernate.cfg.Environment <clinit>
INFO: using CGLIB reflection optimizer
02.04.2005 10:49:04 org.hibernate.cfg.Environment <clinit>
INFO: using JDK 1.4 java.sql.Timestamp handling
02.04.2005 10:49:04 org.hibernate.cfg.Configuration configure
INFO: configuring from resource: /hibernate.cfg.xml
02.04.2005 10:49:04 org.hibernate.cfg.Configuration getConfigurationInputStream
INFO: Configuration resource: /hibernate.cfg.xml
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: trying to locate http://hibernate.sourceforge.net/hibern ... on-3.0.dtd in classpath under org/hibernate/
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: found http://hibernate.sourceforge.net/hibern ... on-3.0.dtd in classpath
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addProperties
FEIN: show_sql=true
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addProperties
FEIN: dialect=org.hibernate.dialect.MySQLDialect
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addProperties
FEIN: connection.url=jdbc:mysql://localhost:3306/bmw-textwerk2?autoReconnect=true
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addProperties
FEIN: connection.driver_class=com.mysql.jdbc.Driver
02.04.2005 10:49:05 org.hibernate.cfg.Configuration parseMappingElement
FEIN: null<-org.dom4j.tree.DefaultAttribute@1befab0 [Attribute: name resource value "Markt.hbm.xml"]
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addResource
INFO: Mapping resource: Markt.hbm.xml
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: trying to locate http://hibernate.sourceforge.net/hibern ... ng-3.0.dtd in classpath under org/hibernate/
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: found http://hibernate.sourceforge.net/hibern ... ng-3.0.dtd in classpath
02.04.2005 10:49:05 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
INFO: Mapping class: Markt -> markt
02.04.2005 10:49:05 org.hibernate.cfg.HbmBinder bindProperty
FEIN: Mapped property: id -> id
02.04.2005 10:49:05 org.hibernate.cfg.HbmBinder bindProperty
FEIN: Mapped property: masterSprache -> master_sprache_id
02.04.2005 10:49:05 org.hibernate.cfg.Configuration parseMappingElement
FEIN: null<-org.dom4j.tree.DefaultAttribute@16672d6 [Attribute: name resource value "Sprache.hbm.xml"]
02.04.2005 10:49:05 org.hibernate.cfg.Configuration addResource
INFO: Mapping resource: Sprache.hbm.xml
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: trying to locate http://hibernate.sourceforge.net/hibern ... ng-3.0.dtd in classpath under org/hibernate/
02.04.2005 10:49:05 org.hibernate.util.DTDEntityResolver resolveEntity
FEIN: found http://hibernate.sourceforge.net/hibern ... ng-3.0.dtd in classpath
02.04.2005 10:49:05 org.hibernate.cfg.HbmBinder bindRootPersistentClassCommonValues
INFO: Mapping class: Sprache -> sprache
02.04.2005 10:49:05 org.hibernate.cfg.HbmBinder bindProperty
FEIN: Mapped property: id -> id
02.04.2005 10:49:05 org.hibernate.cfg.Configuration doConfigure
INFO: Configured SessionFactory: null
02.04.2005 10:49:05 org.hibernate.cfg.Configuration doConfigure
FEIN: properties: {java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, sun.boot.library.path=C:\Program Files\Java\jdk1.5.0\jre\bin, java.vm.version=1.5.0_02-b09, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=;, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=DE, sun.os.patch.level=Service Pack 2, java.vm.specification.name=Java Virtual Machine Specification, user.dir=C:\eclipse-3.1M5\workspace\hibernateTest, java.runtime.version=1.5.0_02-b09, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.endorsed.dirs=C:\Program Files\Java\jdk1.5.0\jre\lib\endorsed, os.arch=x86, java.io.tmpdir=C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\, line.separator=
, java.vm.specification.vendor=Sun Microsystems Inc., user.variant=, os.name=Windows XP, sun.jnu.encoding=Cp1252, java.library.path=C:\Program Files\Java\jdk1.5.0\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\bin;C:\cygwin\bin;C:\Program Files\Subversion\bin;C:\Perl\bin\;C:\Program Files\Intuwave\Shared\mRouterRuntime;C:\Program Files\Java\jdk1.5.0\bin;C:\texmf\miktex\bin;C:\Program Files\SSH Communications Security\SSH Secure Shell;C:\Program Files\Subversion\bin, java.specification.name=Java Platform API Specification, java.class.version=49.0, sun.management.compiler=HotSpot Client Compiler, os.version=5.1, user.home=C:\Documents and Settings\Administrator, user.timezone=Europe/Berlin, java.awt.printerjob=sun.awt.windows.WPrinterJob, file.encoding=Cp1252, java.specification.version=1.5, hibernate.connection.driver_class=com.mysql.jdbc.Driver, show_sql=true, user.name=Administrator, java.class.path=C:\eclipse-3.1M5\workspace\hibernateTest\bin;C:\eclipse-3.1M5\workspace\hibernateTest\lib\commons-collections-2.1.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\dom4j-1.5.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ehcache-1.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jta.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\mysql-connector-java-3.1.7-bin.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\hibernate3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-antlr-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-junit-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-launcher-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\antlr-2.7.5H3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-swing-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\asm.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\asm-attrs.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\c3p0-0.8.5.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\cglib-2.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\cleanimports.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\commons-logging-1.0.4.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\concurrent-1.3.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\connector.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jaas.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jacc-1_0-fr.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jaxen-1.1-beta-4.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-cache.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-common.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-jmx.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-system.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jdbc2_0-stdext.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jgroups-2.2.7.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\junit-3.8.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\oscache-2.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\proxool-0.8.3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\swarmcache-1.0rc2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\versioncheck.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\xerces-2.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\xml-apis.jar, hibernate.show_sql=true, java.vm.specification.version=1.0, java.home=C:\Program Files\Java\jdk1.5.0\jre, sun.arch.data.model=32, hibernate.connection.url=jdbc:mysql://localhost:3306/xxx?autoReconnect=true, hibernate.dialect=org.hibernate.dialect.MySQLDialect, user.language=de, java.specification.vendor=Sun Microsystems Inc., awt.toolkit=sun.awt.windows.WToolkit, hibernate.cglib.use_reflection_optimizer=true, java.vm.info=mixed mode, sharing, java.version=1.5.0_02, java.ext.dirs=C:\Program Files\Java\jdk1.5.0\jre\lib\ext, sun.boot.class.path=C:\Program Files\Java\jdk1.5.0\jre\lib\rt.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\i18n.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\jce.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.5.0\jre\classes, java.vendor=Sun Microsystems Inc., connection.driver_class=com.mysql.jdbc.Driver, file.separator=\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.endian=little, sun.desktop=windows, connection.url=jdbc:mysql://localhost:3306/xxx?autoReconnect=true, dialect=org.hibernate.dialect.MySQLDialect, sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86}
02.04.2005 10:49:05 org.hibernate.cfg.Configuration buildSessionFactory
FEIN: Preparing to build session factory with filters : {}
02.04.2005 10:49:05 org.hibernate.cfg.Configuration secondPassCompile
INFO: processing extends queue
02.04.2005 10:49:05 org.hibernate.cfg.Configuration secondPassCompile
INFO: processing collection mappings
02.04.2005 10:49:05 org.hibernate.cfg.Configuration secondPassCompile
INFO: processing association property references
02.04.2005 10:49:05 org.hibernate.cfg.Configuration secondPassCompile
INFO: processing foreign key constraints
02.04.2005 10:49:05 org.hibernate.cfg.Configuration secondPassCompileForeignKeys
FEIN: resolving reference to class: Sprache
02.04.2005 10:49:06 org.hibernate.dialect.Dialect <init>
INFO: Using dialect: org.hibernate.dialect.MySQLDialect
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Maximum outer join fetch depth: 2
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default batch fetch size: 1
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Generate SQL with comments: disabled
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Order SQL updates by primary key: disabled
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory createQueryTranslatorFactory
INFO: Query translator: org.hibernate.hql.ast.ASTQueryTranslatorFactory
02.04.2005 10:49:06 org.hibernate.hql.ast.ASTQueryTranslatorFactory <init>
INFO: Using ASTQueryTranslatorFactory
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query language substitutions: {}
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Using Hibernate built-in connection pool (not for production use!)
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: Hibernate connection pool size: 20
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: autocommit mode: false
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: using driver: com.mysql.jdbc.Driver at URL: jdbc:mysql://localhost:3306/bmw-textwerk2?autoReconnect=true
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider configure
INFO: connection properties: {}
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider getConnection
FEIN: opening new JDBC connection
02.04.2005 10:49:06 org.hibernate.connection.DriverManagerConnectionProvider getConnection
FEIN: created connection to: jdbc:mysql://localhost:3306/bmw-textwerk2?autoReconnect=true, Isolation Level: 4
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch size: 15
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC batch updates for versioned data: disabled
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Scrollable result sets: enabled
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
FEIN: Wrap result sets: disabled
02.04.2005 10:49:06 org.hibernate.cfg.SettingsFactory buildSettings
INFO: JDBC3 getGeneratedKeys(): enabled
02.04.2005 10:49:07 org.hibernate.transaction.TransactionFactoryFactory buildTransactionFactory
INFO: Using default transaction strategy (direct JDBC transactions)
02.04.2005 10:49:07 org.hibernate.transaction.TransactionManagerLookupFactory getTransactionManagerLookup
INFO: No TransactionManagerLookup configured (in JTA environment, use of read-write or transactional second-level cache is not recommended)
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic flush during beforeCompletion(): disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Automatic session close at end of transaction: disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory createCacheProvider
INFO: Cache provider: org.hibernate.cache.EhCacheProvider
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Second-level cache: enabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Optimize cache for minimal puts: disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Structured second-level cache entries: enabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Query cache: disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Echoing all SQL to stdout
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Statistics: disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Deleted entity synthetic identifier rollback: disabled
02.04.2005 10:49:07 org.hibernate.cfg.SettingsFactory buildSettings
INFO: Default entity-mode: pojo
02.04.2005 10:49:07 org.hibernate.impl.SessionFactoryImpl <init>
INFO: building session factory
02.04.2005 10:49:07 org.hibernate.impl.SessionFactoryImpl <init>
FEIN: Session factory constructed with filter configurations : {}
02.04.2005 10:49:07 org.hibernate.impl.SessionFactoryImpl <init>
FEIN: instantiating session factory with properties: {java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, sun.boot.library.path=C:\Program Files\Java\jdk1.5.0\jre\bin, java.vm.version=1.5.0_02-b09, java.vm.vendor=Sun Microsystems Inc., java.vendor.url=http://java.sun.com/, path.separator=;, java.vm.name=Java HotSpot(TM) Client VM, file.encoding.pkg=sun.io, user.country=DE, sun.os.patch.level=Service Pack 2, java.vm.specification.name=Java Virtual Machine Specification, user.dir=C:\eclipse-3.1M5\workspace\hibernateTest, java.runtime.version=1.5.0_02-b09, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.endorsed.dirs=C:\Program Files\Java\jdk1.5.0\jre\lib\endorsed, os.arch=x86, java.io.tmpdir=C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\, line.separator=
, java.vm.specification.vendor=Sun Microsystems Inc., user.variant=, os.name=Windows XP, sun.jnu.encoding=Cp1252, java.library.path=C:\Program Files\Java\jdk1.5.0\bin;.;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;c:\bin;C:\cygwin\bin;C:\Program Files\Subversion\bin;C:\Perl\bin\;C:\Program Files\Intuwave\Shared\mRouterRuntime;C:\Program Files\Java\jdk1.5.0\bin;C:\texmf\miktex\bin;C:\Program Files\SSH Communications Security\SSH Secure Shell;C:\Program Files\Subversion\bin, java.specification.name=Java Platform API Specification, java.class.version=49.0, sun.management.compiler=HotSpot Client Compiler, os.version=5.1, user.home=C:\Documents and Settings\Administrator, user.timezone=Europe/Berlin, java.awt.printerjob=sun.awt.windows.WPrinterJob, file.encoding=Cp1252, java.specification.version=1.5, hibernate.connection.driver_class=com.mysql.jdbc.Driver, show_sql=true, user.name=Administrator, java.class.path=C:\eclipse-3.1M5\workspace\hibernateTest\bin;C:\eclipse-3.1M5\workspace\hibernateTest\lib\commons-collections-2.1.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\dom4j-1.5.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ehcache-1.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jta.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\mysql-connector-java-3.1.7-bin.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\hibernate3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-antlr-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-junit-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-launcher-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\antlr-2.7.5H3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\ant-swing-1.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\asm.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\asm-attrs.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\c3p0-0.8.5.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\cglib-2.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\cleanimports.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\commons-logging-1.0.4.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\concurrent-1.3.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\connector.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jaas.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jacc-1_0-fr.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jaxen-1.1-beta-4.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-cache.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-common.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-jmx.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jboss-system.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jdbc2_0-stdext.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\jgroups-2.2.7.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\junit-3.8.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\oscache-2.1.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\proxool-0.8.3.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\swarmcache-1.0rc2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\versioncheck.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\xerces-2.6.2.jar;C:\eclipse-3.1M5\workspace\hibernateTest\lib\xml-apis.jar, hibernate.show_sql=true, java.vm.specification.version=1.0, java.home=C:\Program Files\Java\jdk1.5.0\jre, sun.arch.data.model=32, hibernate.connection.url=jdbc:mysql://localhost:3306/xxx?autoReconnect=true, hibernate.dialect=org.hibernate.dialect.MySQLDialect, user.language=de, java.specification.vendor=Sun Microsystems Inc., awt.toolkit=sun.awt.windows.WToolkit, hibernate.cglib.use_reflection_optimizer=true, java.vm.info=mixed mode, sharing, java.version=1.5.0_02, java.ext.dirs=C:\Program Files\Java\jdk1.5.0\jre\lib\ext, sun.boot.class.path=C:\Program Files\Java\jdk1.5.0\jre\lib\rt.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\i18n.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\sunrsasign.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\jsse.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\jce.jar;C:\Program Files\Java\jdk1.5.0\jre\lib\charsets.jar;C:\Program Files\Java\jdk1.5.0\jre\classes, java.vendor=Sun Microsystems Inc., connection.driver_class=com.mysql.jdbc.Driver, file.separator=\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, sun.io.unicode.encoding=UnicodeLittle, sun.cpu.endian=little, sun.desktop=windows, connection.url=jdbc:mysql://localhost:3306/xxx?autoReconnect=true, dialect=org.hibernate.dialect.MySQLDialect, sun.cpu.isalist=pentium_pro+mmx pentium_pro pentium+mmx pentium i486 i386 i86}
02.04.2005 10:49:07 net.sf.ehcache.CacheManager create
FEIN: Creating new CacheManager with default config
02.04.2005 10:49:07 net.sf.ehcache.CacheManager configure
FEIN: Configuring ehcache from classpath.
02.04.2005 10:49:07 net.sf.ehcache.config.Configurator configure
WARNUNG: No configuration found. Configuring ehcache from ehcache-failsafe.xml found in the classpath: jar:file:/C:/eclipse-3.1M5/workspace/hibernateTest/lib/ehcache-1.1.jar!/ehcache-failsafe.xml
02.04.2005 10:49:07 net.sf.ehcache.config.Configuration$DiskStore setPath
FEIN: Disk Store Path: C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\
02.04.2005 10:49:07 org.hibernate.util.ReflectHelper getBulkBean
FEIN: reflection optimizer disabled for: Markt, IllegalArgumentException: Cannot find matching method/constructor
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Static SQL for entity: Markt
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Version select: select id from markt where id =?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Snapshot select: select markt_.id, markt_.master_sprache_id as master2_0_ from markt markt_ where markt_.id=?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Insert 0: insert into markt (master_sprache_id, id) values (?, ?)
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Update 0: update markt set master_sprache_id=? where id=?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Delete 0: delete from markt where id=?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Identity insert: insert into markt (master_sprache_id) values (?)
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Static SQL for entity: Sprache
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Version select: select id from sprache where id =?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Snapshot select: select sprache_.id from sprache sprache_ where sprache_.id=?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Insert 0: insert into sprache (id) values (?)
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Update 0: null
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Delete 0: delete from sprache where id=?
02.04.2005 10:49:07 org.hibernate.persister.entity.BasicEntityPersister logStaticSQL
FEIN: Identity insert: insert into sprache values ( )
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Markt: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=?
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Markt: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=?
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Markt: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=? for update
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Markt: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=? for update
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Sprache: select sprache0_.id as id0_ from sprache sprache0_ where sprache0_.id=?
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Sprache: select sprache0_.id as id0_ from sprache sprache0_ where sprache0_.id=?
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Sprache: select sprache0_.id as id0_ from sprache sprache0_ where sprache0_.id=? for update
02.04.2005 10:49:08 org.hibernate.loader.entity.EntityLoader <init>
FEIN: Static select for entity Sprache: select sprache0_.id as id0_ from sprache sprache0_ where sprache0_.id=? for update
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryObjectFactory <clinit>
FEIN: initializing class SessionFactoryObjectFactory
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryObjectFactory addInstance
FEIN: registered: 402880a00302195f0103021963d10000 (unnamed)
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryObjectFactory addInstance
INFO: Not binding factory to JNDI, no JNDI name configured
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryImpl <init>
FEIN: instantiated session factory
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryImpl checkNamedQueries
INFO: Checking 0 named queries
02.04.2005 10:49:08 org.hibernate.impl.SessionImpl <init>
FEIN: opened session at timestamp: 4556520440090624
02.04.2005 10:49:08 org.hibernate.impl.SessionImpl immediateLoad
FEIN: initializing proxy: [Markt#6]
02.04.2005 10:49:08 org.hibernate.loader.Loader loadEntity
FEIN: loading entity: [Markt#6]
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher logOpenPreparedStatement
FEIN: about to open PreparedStatement (open PreparedStatements: 0, globally: 0)
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher openConnection
FEIN: opening JDBC connection
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher log
FEIN: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=?
Hibernate: select markt0_.id as id0_, markt0_.master_sprache_id as master2_0_0_ from markt markt0_ where markt0_.id=?
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher logOpenResults
FEIN: about to open ResultSet (open ResultSets: 0, globally: 0)
02.04.2005 10:49:08 org.hibernate.loader.Loader getRow
FEIN: result row: EntityKey[Markt#6]
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher logCloseResults
FEIN: about to close ResultSet (open ResultSets: 1, globally: 1)
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher logClosePreparedStatement
FEIN: about to close PreparedStatement (open PreparedStatements: 1, globally: 1)
02.04.2005 10:49:08 org.hibernate.engine.TwoPhaseLoad initializeEntity
FEIN: resolving associations for [Markt#6]
02.04.2005 10:49:08 org.hibernate.engine.TwoPhaseLoad initializeEntity
FEIN: done materializing entity [Markt#6]
02.04.2005 10:49:08 org.hibernate.engine.PersistenceContext initializeNonLazyCollections
FEIN: initializing non-lazy collections
class Markt[id=6]
null
02.04.2005 10:49:08 org.hibernate.loader.Loader loadEntity
FEIN: done entity load
02.04.2005 10:49:08 org.hibernate.jdbc.AbstractBatcher closeConnection
FEIN: closing JDBC connection (open PreparedStatements: 0, globally: 0) (open ResultSets: 0, globally: 0)
02.04.2005 10:49:08 org.hibernate.impl.SessionFactoryImpl close
INFO: closing
02.04.2005 10:49:08 org.hibernate.connection.DriverManagerConnectionProvider close
INFO: cleaning up connection pool: jdbc:mysql://localhost:3306/bmw-textwerk2?autoReconnect=true


MySQL schema:
Code:
CREATE TABLE `markt` (
  `id` int(10) unsigned NOT NULL auto_increment,
  `master_sprache_id` int(10) unsigned NOT NULL default '0',
  PRIMARY KEY  (`id`),
  KEY `FK_markt_master_sprache` (`master_sprache_id`),
  CONSTRAINT `FK_markt_master_sprache` FOREIGN KEY (`master_sprache_id`) REFERENCES `sprache` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1;

CREATE TABLE `sprache` (
  `id` int(10) unsigned NOT NULL auto_increment,
  PRIMARY KEY  (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=latin1 ROW_FORMAT=FIXED;
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anthony
 Post subject:
PostPosted: Sat Apr 02, 2005 8:03 am 
Hibernate Team
Hibernate Team

Joined: Thu Dec 18, 2003 9:55 am
Posts: 1977
Location: France
to debug, change
Code:
      <many-to-one name="masterSprache" column="master_sprache_id"
         not-null="true" />


to
Code:
      <many-to-one name="masterSprache" fetch="join" column="master_sprache_id"
         not-null="true" />


then copy paste generated sql to your db client and check what's happening

_________________
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Goonie
 Post subject:
PostPosted: Sat Apr 02, 2005 12:19 pm 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
Hello Anthony!

Thanks for your suggestion. I changed the mapping, here is the generated SQL:

select markt0_.id as id1_, markt0_.master_sprache_id as master2_0_1_, sprache1_.id as id0_ from markt markt0_ inner join sprache sprache1_ on markt0_.master_sprache_id=sprache1_.id where markt0_.id=?

When I replace the "?" with my id (6), I get the following result:

"id1_","master2_0_1_","id0_"
6, 12, 12

I can see nothing wrong. However, masterSprache is still "null".

Regards,

Andreas
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Goonie
 Post subject:
PostPosted: Sat Apr 02, 2005 12:21 pm 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
There is one thing I forgot to tell:

When I uncomment the line

Code:
System.out.println(session.createCriteria(Markt.class).list());


in my previous code, I afterwards get the correct value for masterSprache (because it is fetched from level 1 cache, I think).

Regards,

Andreas
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Goonie
 Post subject:
PostPosted: Sun Apr 03, 2005 4:49 pm 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
I have now read all frequent problems, searched every forum and the wiki.

If no one has got any objections, I will file a bug report (although I can't believe that Hibernate3 contains trivial bugs like this).

Regards,

Andreas
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Goonie
 Post subject: many-to-one returning null on Hibernate3 [solved]
PostPosted: Sun Apr 03, 2005 5:13 pm 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
I just found the cause of my problem: I had defined the accessors of my persistant objects as final.

Is this behaviour really intentional (without warning and all)?

Shall I still file a bug report against Hibernate3?
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gavin
 Post subject:
PostPosted: Sun Apr 03, 2005 5:25 pm 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
Of course you should not. This is incredibly well-documented.
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Goonie
 Post subject:
PostPosted: Mon Apr 04, 2005 2:20 am 
Regular
Regular

Joined: Tue Jan 06, 2004 3:32 pm
Posts: 80
Location: Munich, Germany
Could you point me to where it is documented (in the reference manual), please?

I only found

4.1.4. Prefer non-final classes (optional)

which does not match my mistake.

4.1.1. Declare accessors and mutators for persistent fields

does not mention it either (I think a novice would expect it there because it talks about the other method modifiers).

Regards,

Andreas
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