-->
These old forums are deprecated now and set to read-only. We are waiting for you on our new forums!
More modern, Discourse-based and with GitHub/Google/Twitter authentication built-in.

View unanswered posts | View active topics


Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]


Forum locked This topic is locked, you cannot edit posts or make further replies.  Page 1 of 1
  [ 9 posts ] 
  Previous topic | Next topic 
Author Message
andresbube
 Post subject: Primary key association
PostPosted: Sun Jan 18, 2004 1:14 pm 
Newbie

Joined: Wed Jan 07, 2004 7:59 pm
Posts: 11
Location: Medellon, Colombia
Hi,

I'm having a problem with a primary key association. In the documentation I found that "if you want two objects to be related by a primary key association, you must make sure that they are assigned the same identifier value!".

My question is,

_________________
Andres Camilo Bustamante
Analista Arquitectura Informaca

Top
 Profile  
 
michael
 Post subject:
PostPosted: Sun Jan 18, 2004 3:11 pm 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
Try using foreign generator.
Top
 Profile  
 
emmanuel
 Post subject:
PostPosted: Mon Jan 19, 2004 2:59 am 
Hibernate Team
Hibernate Team

Joined: Sun Sep 14, 2003 3:54 am
Posts: 7256
Location: Paris, France
Yes the foreign generator will help you if you have a one-to-one association between those objects.
Otherwise, you'll have to save the main object before retrieving the id.

_________________
Emmanuel

Top
 Profile  
 
andresbube
 Post subject:
PostPosted: Mon Jan 19, 2004 10:02 am 
Newbie

Joined: Wed Jan 07, 2004 7:59 pm
Posts: 11
Location: Medellon, Colombia
Oh...yes I don't know how I missed that in the documentation.

Thank you very much for your help

_________________
Andres Camilo Bustamante
Analista Arquitectura Informaca

Top
 Profile  
 
andresbube
 Post subject:
PostPosted: Mon Jan 19, 2004 12:16 pm 
Newbie

Joined: Wed Jan 07, 2004 7:59 pm
Posts: 11
Location: Medellon, Colombia
I'm sorry for the lenghtly post, but I think i would clear things up

I'm using a foreign id generator but I'm experiencing problems. I'm getting the following exception: could not instantiate id generator.

Here's my mapping file:

Code:
<?xml version='1.0' encoding='UTF-8'?>
<!DOCTYPE hibernate-mapping PUBLIC "-//Hibernate/Hibernate Mapping DTD//EN" "http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd">
<hibernate-mapping package="epe.beans">
  <class name="CuentaDeUsuario" table="USUARIOS">
    <id name="idCuenta" type="string" unsaved-value="null">
      <column name="ID" sql-type="varchar(32)" not-null="true" />
      <generator class="foreign">
        <param name="codigo">solicitante</param>
      </generator>
    </id>
    <discriminator column="tipo" type="string" force="true" />
    <property name="login">
      <column name="LOGIN" sql-type="varchar(30)" not-null="true"/>
    </property>
    <property name="password">
      <column name="PASSWORD" sql-type="varchar(30)" not-null="true"/>
    </property>
    <one-to-one name="solicitante" class="Solicitante" constrained="true" />
    <subclass name="CuentaDeUsuarioImpl" />
  </class>
</hibernate-mapping>


I checked the hibernate code in IdentifierGeneratorFactory and the code goes like this:
Code:
...
   static {
      GENERATORS.put("uuid.hex", UUIDHexGenerator.class);
      GENERATORS.put("uuid.string", UUIDStringGenerator.class);
      GENERATORS.put("hilo", TableHiLoGenerator.class);
      GENERATORS.put("assigned", Assigned.class);
      GENERATORS.put("identity", IdentityGenerator.class);
      GENERATORS.put("sequence", SequenceGenerator.class);
      GENERATORS.put("seqhilo", SequenceHiLoGenerator.class);
      GENERATORS.put("vm", IncrementGenerator.class); //vm is deprecated
      GENERATORS.put("increment", IncrementGenerator.class);
      GENERATORS.put("foreign", ForeignGenerator.class);
   }
...
public static IdentifierGenerator create(String strategy, Type type, Properties params, Dialect dialect) throws MappingException {
      try {
         //if ( "vm".equals(strategy) ) log.info("'vm' strategy is deprecated; use 'increment'");
         
         Class clazz = (Class) GENERATORS.get(strategy);
         if ( "native".equals(strategy) ) {
            if ( dialect.supportsIdentityColumns() ) {
               clazz = IdentityGenerator.class;
            }
            else if ( dialect.supportsSequences() ) {
               clazz = SequenceGenerator.class;
            }
            else {
               clazz = TableHiLoGenerator.class;
            }
         }
         if (clazz==null) clazz = ReflectHelper.classForName(strategy);
         IdentifierGenerator idgen = (IdentifierGenerator) clazz.newInstance();
         if (idgen instanceof Configurable) ( (Configurable) idgen).configure(type, params, dialect);
         return idgen;
      }
      catch (Exception e) {
         throw new MappingException("could not instantiate id generator", e);
      }
..


So, it appears to me that the strategy parameter is comming null even with the mapping file specifying <generator class="foreign">. I've also tried with <generator class="" net.sf.hibernate.id.ForeignGenerator> with the same result.

This is the full log
Code:
11:11:59,937  INFO Environment:432 - Hibernate 2.1.1
11:11:59,953  INFO Environment:461 - hibernate.properties not found
11:11:59,953  INFO Environment:481 - using CGLIB reflection optimizer
11:11:59,968  INFO Configuration:843 - configuring from resource: /hibernate.cfg.xml
11:11:59,968  INFO Configuration:815 - Configuration resource: /hibernate.cfg.xml
11:12:00,078 DEBUG DTDEntityResolver:20 - trying to locate http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd in classpath under net/sf/hibernate/
11:12:00,078 DEBUG DTDEntityResolver:29 - found http://hibernate.sourceforge.net/hibernate-configuration-2.0.dtd in classpath
11:12:00,140 DEBUG Configuration:801 - connection.datasource=java:comp/env/jdbc/epeDS
11:12:00,140 DEBUG Configuration:801 - show_sql=false
11:12:00,140 DEBUG Configuration:801 - dialect=net.sf.hibernate.dialect.MySQLDialect
11:12:00,140 DEBUG Configuration:801 - transaction.factory_class=net.sf.hibernate.transaction.JDBCTransactionFactory
11:12:00,140 DEBUG Configuration:952 - null<-org.dom4j.tree.DefaultAttribute@74f02c [Attribute: name resource value "Solicitante.hbm.xml"]
11:12:00,140  INFO Configuration:300 - Mapping resource: Solicitante.hbm.xml
11:12:00,140 DEBUG DTDEntityResolver:20 - trying to locate http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath under net/sf/hibernate/
11:12:00,156 DEBUG DTDEntityResolver:29 - found http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath
11:12:00,328  INFO Binder:225 - Mapping class: epe.beans.Solicitante -> SOLICITANTES
11:12:00,500 DEBUG Binder:449 - Mapped property: codigo -> CODIGO, type: string
11:12:00,546 DEBUG Binder:449 - Mapped property: primerNombre -> NOMBRE1, type: string
11:12:00,546 DEBUG Binder:449 - Mapped property: segundoNombre -> NOMBRE2, type: string
11:12:00,546 DEBUG Binder:449 - Mapped property: primerApellido -> APELLIDO1, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: segundoApellido -> APELLIDO2, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: telefono -> TELEFONO, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: email -> EMAIL, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: direccionPostal -> DIRECCION_POSTAL, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: nombreOrganizacion -> NOMBRE_ORG, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: direccionOrganizacion -> DIRECCION_ORG, type: string
11:12:00,562 DEBUG Binder:449 - Mapped property: sectorEconomico -> SECTOR_ORG, type: string
11:12:00,593 DEBUG Binder:449 - Mapped property: requerimientos, type: java.util.Set
11:12:00,609 DEBUG Binder:449 - Mapped property: cuentaDeUsuario, type: epe.beans.CuentaDeUsuario
11:12:00,703  INFO Binder:169 - Mapping subclass: epe.beans.SolicitanteImpl -> SOLICITANTES
11:12:00,703 DEBUG Binder:1228 - Named query: epe.beans.Solicitante.ListarTodos -> from epe.beans.SolicitanteImpl
11:12:00,703 DEBUG Binder:1228 - Named query: epe.beans.Solicitante.ContarTodos -> select count(*) from epe.beans.SolicitanteImpl
11:12:00,703 DEBUG Binder:1228 - Named query: epe.beans.Solicitante.BuscarPorCodigo -> from epe.beans.SolicitanteImpl where codigo=?
11:12:00,703 DEBUG Configuration:952 - null<-org.dom4j.tree.DefaultAttribute@1402c4 [Attribute: name resource value "CuentaDeUsuario.hbm.xml"]
11:12:00,703  INFO Configuration:300 - Mapping resource: CuentaDeUsuario.hbm.xml
11:12:00,703 DEBUG DTDEntityResolver:20 - trying to locate http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath under net/sf/hibernate/
11:12:00,718 DEBUG DTDEntityResolver:29 - found http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath
11:12:00,734  INFO Binder:225 - Mapping class: epe.beans.CuentaDeUsuario -> USUARIOS
11:12:00,734 DEBUG Binder:449 - Mapped property: idCuenta -> ID, type: string
11:12:00,734 DEBUG Binder:449 - Mapped property: login -> LOGIN, type: string
11:12:00,734 DEBUG Binder:449 - Mapped property: password -> PASSWORD, type: string
11:12:00,734 DEBUG Binder:449 - Mapped property: solicitante, type: epe.beans.Solicitante
11:12:00,734  INFO Binder:169 - Mapping subclass: epe.beans.CuentaDeUsuarioImpl -> USUARIOS
11:12:00,734 DEBUG Binder:1228 - Named query: epe.beans.CuentaDeUsuario.ListarTodos -> from epe.beans.CuentaDeUsuarioImpl
11:12:00,734 DEBUG Binder:1228 - Named query: epe.beans.CuentaDeUsuario.ContarTodos -> select count(*) from epe.beans.CuentaDeUsuarioImpl
11:12:00,734 DEBUG Binder:1228 - Named query: epe.beans.CuentaDeUsuario.BuscarPorLogin -> from epe.beans.CuentaDeUsuarioImpl where login=?
11:12:00,734 DEBUG Binder:1228 - Named query: epe.beans.CuentaDeUsuario.ValidarLogin -> from epe.beans.CuentaDeUsuario where login=? and password=?
11:12:00,750 DEBUG Configuration:952 - null<-org.dom4j.tree.DefaultAttribute@63e563 [Attribute: name resource value "RequerimientoEvaluacion.hbm.xml"]
11:12:00,750  INFO Configuration:300 - Mapping resource: RequerimientoEvaluacion.hbm.xml
11:12:00,750 DEBUG DTDEntityResolver:20 - trying to locate http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath under net/sf/hibernate/
11:12:00,765 DEBUG DTDEntityResolver:29 - found http://hibernate.sourceforge.net/hibernate-mapping-2.0.dtd in classpath
11:12:00,781  INFO Binder:225 - Mapping class: epe.beans.RequerimientoEvaluacion -> REQS_EVALUACION
11:12:00,781 DEBUG Binder:449 - Mapped property: codigo -> CODIGO, type: string
11:12:00,781 DEBUG Binder:449 - Mapped property: fecha -> FECHA, type: timestamp
11:12:00,781 DEBUG Binder:449 - Mapped property: objetivo -> OBJETIVO_GENERAL, type: string
11:12:00,796 DEBUG Binder:449 - Mapped property: solicitante -> cdsolicitante, type: epe.beans.Solicitante
11:12:00,796  INFO Binder:169 - Mapping subclass: epe.beans.RequerimientoEvaluacionImpl -> REQS_EVALUACION
11:12:00,796  INFO Configuration:998 - Configured SessionFactory: null
11:12:00,796 DEBUG Configuration:999 - properties: {java.vendor=Sun Microsystems Inc., show_sql=false, oracle.j2ee.container.version=9.0.4.0.0, connection.datasource=java:comp/env/jdbc/epeDS, oracle.jms.j2eeCompliant=true, os.name=Windows 2000, sun.boot.class.path=c:\jdk1.4.0\jre\lib\rt.jar;c:\jdk1.4.0\jre\lib\i18n.jar;c:\jdk1.4.0\jre\lib\sunrsasign.jar;c:\jdk1.4.0\jre\lib\jsse.jar;c:\jdk1.4.0\jre\lib\jce.jar;c:\jdk1.4.0\jre\lib\charsets.jar;c:\jdk1.4.0\jre\classes, oracle.xdkjava.compatibility.version=9.0.3, sun.java2d.fontpath=, java.vm.specification.vendor=Sun Microsystems Inc., java.runtime.version=1.4.0-b92, user.name=andrbube, user.language=es, java.naming.factory.initial=com.evermind.server.ApplicationInitialContextFactory, sun.boot.library.path=c:\jdk1.4.0\jre\bin, dialect=net.sf.hibernate.dialect.MySQLDialect, java.version=1.4.0, user.timezone=GMT-05:00, java.net.preferIPv4Stack=true, sun.arch.data.model=32, java.endorsed.dirs=c:\jdk1.4.0\jre\lib\endorsed, sun.cpu.isalist=pentium i486 i386, file.encoding.pkg=sun.io, file.separator=\, java.specification.name=Java Platform API Specification, oracle.jms.stronglyTypedSelectors=true, hibernate.cglib.use_reflection_optimizer=true, java.class.version=48.0, user.country=CO, java.home=c:\jdk1.4.0\jre, java.vm.info=mixed mode, os.version=5.0, transaction.factory_class=net.sf.hibernate.transaction.JDBCTransactionFactory, hibernate.transaction.factory_class=net.sf.hibernate.transaction.JDBCTransactionFactory, hibernate.connection.datasource=java:comp/env/jdbc/epeDS, path.separator=;, java.vm.version=1.4.0-b92, java.util.prefs.PreferencesFactory=java.util.prefs.WindowsPreferencesFactory, user.variant=, java.protocol.handler.pkgs=com.evermind.protocol, java.awt.printerjob=sun.awt.windows.WPrinterJob, sun.io.unicode.encoding=UnicodeLittle, awt.toolkit=sun.awt.windows.WToolkit, user.home=C:\Documents and Settings\andrbube, java.specification.vendor=Sun Microsystems Inc., oracle.dms.sensors=5, java.library.path=c:\jdk1.4.0\bin;.;C:\WINNT\system32;C:\WINNT;c:\jdk1.4.0\bin;C:\FORMS6I\bin;c:\ids\bin;c:\ids\jdk\jre\bin\classic;c:\ids\jdk\jre\bin;c:\ids\jlib;C:\Archivos de programa\Oracle\jre\1.1.8\bin;C:\Archivos de programa\Oracle\jre\1.3.1\bin;C:\pb8ent\Jaguar CTS 3.5\client\dll;C:\pb8ent\Shared\PowerBuilder;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\WINNT\system32\nls;C:\WINNT\system32\nls\English;C:\FORMS6I\jdk\bin;C:\pb8ent\SQL Anywhere 7\win32;C:\pb8ent\Shared\win32;C:\pb8ent\Shared\Web Targets;C:\Archivos de programa\Novell\ZENworks\;D:\cvs;C:\des_817\bin;;C:\Archivos de programa\rksupport;Z:.;, java.vendor.url=http://java.sun.com/, java.vm.vendor=Sun Microsystems Inc., hibernate.dialect=net.sf.hibernate.dialect.MySQLDialect, java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, oracle.jdbc.J2EE13Compliant=true, java.class.path=oc4j.jar, oracle.j2ee.home=D:\oc4j_10g\j2ee\home, java.vm.specification.name=Java Virtual Machine Specification, java.vm.specification.version=1.0, sun.cpu.endian=little, oracle.j2ee.container.name=Oracle Application Server Containers for J2EE 10g (9.0.4.0.0), sun.os.patch.level=Service Pack 4, oracle.vector.deepCopy=false, java.io.tmpdir=C:\DOCUME~1\andrbube\CONFIG~1\Temp\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, os.arch=x86, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.ext.dirs=c:\jdk1.4.0\jre\lib\ext, user.dir=D:\oc4j_10g\j2ee\home, line.separator=
, java.vm.name=Java HotSpot(TM) Client VM, javax.management.builder.initial=oracle.oc4j.admin.jmx.server.Oc4jMBeanServerBuilder, file.encoding=Cp1252, java.specification.version=1.4, hibernate.show_sql=false}
11:12:00,796  INFO Configuration:584 - processing one-to-many association mappings
11:12:00,796 DEBUG Binder:1301 - Second pass for collection: epe.beans.Solicitante.requerimientos
11:12:00,796  INFO Binder:1139 - Mapping collection: epe.beans.Solicitante.requerimientos -> REQS_EVALUACION
11:12:00,796 DEBUG Binder:1316 - Mapped collection key: cdsolicitante, one-to-many: epe.beans.RequerimientoEvaluacion
11:12:00,796  INFO Configuration:593 - processing one-to-one association property references
11:12:00,796  INFO Configuration:618 - processing foreign key constraints
11:12:00,796 DEBUG Configuration:628 - resolving reference to class: epe.beans.Solicitante
11:12:00,796 DEBUG Configuration:628 - resolving reference to class: epe.beans.Solicitante
11:12:00,843  INFO Dialect:82 - Using dialect: net.sf.hibernate.dialect.MySQLDialect
11:12:00,843  INFO SettingsFactory:62 - Use outer join fetching: true
11:12:00,859  INFO NamingHelper:26 - JNDI InitialContext properties:{}
11:12:00,875  INFO DatasourceConnectionProvider:51 - Using datasource: java:comp/env/jdbc/epeDS
11:12:00,875  INFO TransactionFactoryFactory:31 - Transaction strategy: net.sf.hibernate.transaction.JDBCTransactionFactory
11:12:00,890  INFO TransactionManagerLookupFactory:33 - No TransactionManagerLookup configured (in JTA environment, use of process level read-write cache is not recommended)
11:12:00,890  INFO SettingsFactory:89 - Use scrollable result sets: true
11:12:00,890  INFO SettingsFactory:90 - JDBC 2 max batch size: 15
11:12:00,906  INFO SettingsFactory:99 - Query language substitutions: {}
11:12:00,906  INFO SettingsFactory:110 - cache provider: net.sf.ehcache.hibernate.Provider
11:12:00,906  INFO Configuration:1057 - instantiating and configuring caches
11:12:01,140  INFO SessionFactoryImpl:119 - building session factory
11:12:01,140 DEBUG SessionFactoryImpl:125 - instantiating session factory with properties: {java.vendor=Sun Microsystems Inc., show_sql=false, oracle.j2ee.container.version=9.0.4.0.0, connection.datasource=java:comp/env/jdbc/epeDS, oracle.jms.j2eeCompliant=true, os.name=Windows 2000, sun.boot.class.path=c:\jdk1.4.0\jre\lib\rt.jar;c:\jdk1.4.0\jre\lib\i18n.jar;c:\jdk1.4.0\jre\lib\sunrsasign.jar;c:\jdk1.4.0\jre\lib\jsse.jar;c:\jdk1.4.0\jre\lib\jce.jar;c:\jdk1.4.0\jre\lib\charsets.jar;c:\jdk1.4.0\jre\classes, oracle.xdkjava.compatibility.version=9.0.3, sun.java2d.fontpath=, java.vm.specification.vendor=Sun Microsystems Inc., java.runtime.version=1.4.0-b92, user.name=andrbube, user.language=es, java.naming.factory.initial=com.evermind.server.ApplicationInitialContextFactory, sun.boot.library.path=c:\jdk1.4.0\jre\bin, dialect=net.sf.hibernate.dialect.MySQLDialect, java.version=1.4.0, user.timezone=GMT-05:00, java.net.preferIPv4Stack=true, sun.arch.data.model=32, java.endorsed.dirs=c:\jdk1.4.0\jre\lib\endorsed, sun.cpu.isalist=pentium i486 i386, file.encoding.pkg=sun.io, file.separator=\, java.specification.name=Java Platform API Specification, oracle.jms.stronglyTypedSelectors=true, hibernate.cglib.use_reflection_optimizer=true, java.class.version=48.0, user.country=CO, java.home=c:\jdk1.4.0\jre, java.vm.info=mixed mode, os.version=5.0, transaction.factory_class=net.sf.hibernate.transaction.JDBCTransactionFactory, hibernate.transaction.factory_class=net.sf.hibernate.transaction.JDBCTransactionFactory, hibernate.connection.datasource=java:comp/env/jdbc/epeDS, path.separator=;, java.vm.version=1.4.0-b92, java.util.prefs.PreferencesFactory=java.util.prefs.WindowsPreferencesFactory, user.variant=, java.protocol.handler.pkgs=com.evermind.protocol, java.awt.printerjob=sun.awt.windows.WPrinterJob, sun.io.unicode.encoding=UnicodeLittle, awt.toolkit=sun.awt.windows.WToolkit, user.home=C:\Documents and Settings\andrbube, java.specification.vendor=Sun Microsystems Inc., oracle.dms.sensors=5, java.library.path=c:\jdk1.4.0\bin;.;C:\WINNT\system32;C:\WINNT;c:\jdk1.4.0\bin;C:\FORMS6I\bin;c:\ids\bin;c:\ids\jdk\jre\bin\classic;c:\ids\jdk\jre\bin;c:\ids\jlib;C:\Archivos de programa\Oracle\jre\1.1.8\bin;C:\Archivos de programa\Oracle\jre\1.3.1\bin;C:\pb8ent\Jaguar CTS 3.5\client\dll;C:\pb8ent\Shared\PowerBuilder;C:\WINNT\system32;C:\WINNT;C:\WINNT\System32\Wbem;C:\WINNT\system32\nls;C:\WINNT\system32\nls\English;C:\FORMS6I\jdk\bin;C:\pb8ent\SQL Anywhere 7\win32;C:\pb8ent\Shared\win32;C:\pb8ent\Shared\Web Targets;C:\Archivos de programa\Novell\ZENworks\;D:\cvs;C:\des_817\bin;;C:\Archivos de programa\rksupport;Z:.;, java.vendor.url=http://java.sun.com/, java.vm.vendor=Sun Microsystems Inc., hibernate.dialect=net.sf.hibernate.dialect.MySQLDialect, java.runtime.name=Java(TM) 2 Runtime Environment, Standard Edition, oracle.jdbc.J2EE13Compliant=true, java.class.path=oc4j.jar, oracle.j2ee.home=D:\oc4j_10g\j2ee\home, java.vm.specification.name=Java Virtual Machine Specification, java.vm.specification.version=1.0, sun.cpu.endian=little, oracle.j2ee.container.name=Oracle Application Server Containers for J2EE 10g (9.0.4.0.0), sun.os.patch.level=Service Pack 4, oracle.vector.deepCopy=false, java.io.tmpdir=C:\DOCUME~1\andrbube\CONFIG~1\Temp\, java.vendor.url.bug=http://java.sun.com/cgi-bin/bugreport.cgi, os.arch=x86, java.awt.graphicsenv=sun.awt.Win32GraphicsEnvironment, java.ext.dirs=c:\jdk1.4.0\jre\lib\ext, user.dir=D:\oc4j_10g\j2ee\home, line.separator=
, java.vm.name=Java HotSpot(TM) Client VM, javax.management.builder.initial=oracle.oc4j.admin.jmx.server.Oc4jMBeanServerBuilder, file.encoding=Cp1252, java.specification.version=1.4, hibernate.show_sql=false}
[/quote]

_________________
Andres Camilo Bustamante
Analista Arquitectura Informaca

Top
 Profile  
 
emmanuel
 Post subject:
PostPosted: Mon Jan 19, 2004 12:21 pm 
Hibernate Team
Hibernate Team

Joined: Sun Sep 14, 2003 3:54 am
Posts: 7256
Location: Paris, France
Code:
<generator class="foreign">
  <param name="property">solicitante</param>
</generator>


I don't know where you found the codigo property.

_________________
Emmanuel

Top
 Profile  
 
andresbube
 Post subject:
PostPosted: Mon Jan 19, 2004 12:59 pm 
Newbie

Joined: Wed Jan 07, 2004 7:59 pm
Posts: 11
Location: Medellon, Colombia
Yes, thank you Emmanuel!!! that's the correct mapping, my program is finally working.


emmanuel wrote:
Code:
<generator class="foreign">
  <param name="property">solicitante</param>
</generator>


I don't know where you found the codigo property.


Nevertheless, I respectfully think that the documentation is a bit short on describing the one-to-one mapping and the foreign generator.

It doesn't state clearly that the foreign generator needs that extra parameter, nor that the way to relate the primary key association is through the foreign generator.

The docs states: "So if you want two objects to be related by a primary key association, you must make sure they are assigned the same identifier value". I would append " using the assigned generator for manually generated ids for the related objects or using the foreign id generator for the child object in the relationship".

_________________
Andres Camilo Bustamante
Analista Arquitectura Informaca

Top
 Profile  
 
michael
 Post subject:
PostPosted: Mon Jan 19, 2004 1:33 pm 
Hibernate Team
Hibernate Team

Joined: Tue Sep 09, 2003 2:10 pm
Posts: 3246
Location: Passau, Germany
Feel free to submit a patch improving the documentation to JIRA ;)
Top
 Profile  
 
andresbube
 Post subject:
PostPosted: Mon Jan 19, 2004 5:35 pm 
Newbie

Joined: Wed Jan 07, 2004 7:59 pm
Posts: 11
Location: Medellon, Colombia
gloeglm wrote:
Feel free to submit a patch improving the documentation to JIRA ;)


Ok, I've posted to JIRA under key HB-638

_________________
Andres Camilo Bustamante
Analista Arquitectura Informaca

Top
 Profile  
 
Display posts from previous:  Sort by  
Forum locked This topic is locked, you cannot edit posts or make further replies.  Page 1 of 1
  [ 9 posts ] 

Board index » Hibernate & Java Persistence » Hibernate Users

All times are UTC - 5 hours [ DST ]

You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum

Search for:
© Copyright 2014, Red Hat Inc. All rights reserved. JBoss and Hibernate are registered trademarks and servicemarks of Red Hat, Inc.