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greg_barton
 Post subject: More composite-id fu!
PostPosted: Thu Sep 04, 2003 10:43 pm 
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I'm still trying to create the ID scheme laid out here: http://forum.hibernate.org/viewtopic.php?t=61

I'm so close to finishing I can taste it. :) Unfortunately I've come upon a glitch I can't seem to get around.


The problem is that when I try to put a many-to-one relationship in the ID, whether I use a custom id or composite-id with a key-many-to-one attribute, I get a net.sf.hibernate.MappingException.

Mapping:
Code:
<composite-id unsaved-value="any">
  <key-property name="id" type="long"/>
  <key-many-to-one name="site" class="com.foo.bar.data.sites.Site"/>
</composite-id>


Exception thrown at runtime:
Code:
net.sf.hibernate.MappingException: No persister for: com.foo.bar.data.sites.Site
        at net.sf.hibernate.impl.SessionFactoryImpl.getPersister(SessionFactoryImpl.java:337)
        at net.sf.hibernate.impl.SessionFactoryImpl.getIdentifierType(SessionFactoryImpl.java:472)
        at net.sf.hibernate.type.ManyToOneType.getColumnSpan(ManyToOneType.java:21)
        at net.sf.hibernate.type.ComponentType.getColumnSpan(ComponentType.java:58)
        at net.sf.hibernate.persister.NormalizedEntityPersister.<init>(NormalizedEntityPersister.java:719)
        at net.sf.hibernate.persister.PersisterFactory.create(PersisterFactory.java:32)
        at net.sf.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:141)
        at net.sf.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:657)
        at com.foo.bar.data.access.DataAccess.makeSessionFactory(DataAccess.java:70)
        at com.foo.bar.data.access.DataAccess.<clinit>(DataAccess.java:22)
        at HibernateTest.main(HibernateTest.java:102)


When I have a custom ID type I get the same exception with

Code:
at net.sf.hibernate.type.CompositeCustomType.getColumnSpan(CompositeCustomType.java:122)

instead of
Code:
at net.sf.hibernate.type.ComponentType.getColumnSpan(ComponentType.java:58)


The mapping for Site is in the same mapping file as the problem class, so I know it's loaded. Also, I can have a normal many-to-one tag in the same class without problems.

I think this may be related to a recent issue logged in JIRA: http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?id=10331

The issue is marked closed and fixed, but the atteched comments seem to indicate that there are still problems.

Except in cases where I have custom types, I'n generating all java code and DDL from the mapping file.

I'm using version 2.1 beta 2.

Thanks!
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gavin
 Post subject:
PostPosted: Thu Sep 04, 2003 10:57 pm 
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
It is nothing to do with that JIRA issue.

It really looks like the associated class is not mapped.

submit something to JIRA is you are absolutely certain you can't resolve it yourself. I'm pretty certain it is error on your part.
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gavin
 Post subject:
PostPosted: Thu Sep 04, 2003 10:59 pm 
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Posts: 5130
Location: Melbourne, Australia
What happens if you reverse the order of the two mappings in the mapping file?
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greg_barton
 Post subject:
PostPosted: Thu Sep 04, 2003 11:26 pm 
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Joined: Tue Aug 26, 2003 1:24 pm
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No change if I change the order of the classes in the mapping file.

In all cases, I get the following log line:
Code:
22:13:39,288  INFO Binder:183 - Mapping class: com.foo.bar.data.sites.Site -> sites


The class is mapped. Like I said, I can have the following line in the mapping with no problem:
Code:
<many-to-one name="foo" class="com.foo.bar.data.sites.Site"/>


Also, when I use the <composite-id> method, the java code for the ID'd class is generated and the DDL for the underlying table (and all tables that refer to it) are generated just fine. I can call "new Configuration().configure()" just fine, but when I try to create a SessionFactory the problem pops up.
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gavin
 Post subject:
PostPosted: Thu Sep 04, 2003 11:29 pm 
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Posts: 5130
Location: Melbourne, Australia
Alright. Give me a main() method. (JIRA)
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greg_barton
 Post subject:
PostPosted: Fri Sep 05, 2003 1:40 am 
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Done: http://opensource.atlassian.com/projects/hibernate/secure/ViewIssue.jspa?key=HB-311
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gavin
 Post subject:
PostPosted: Fri Sep 05, 2003 5:11 am 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
I ran your code against my snapshots of Hibernate 2.0 and 2.1 and no errors at all. Successfully persisted and retrieved a Site and SiteDataObject.
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greg_barton
 Post subject:
PostPosted: Fri Sep 05, 2003 12:50 pm 
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Posts: 213
Location: Richardson, TX
Are your snapshots any different from the currently released 2.1beta2 in the classes/methods from the stack trace above?

Also, did you use log4j for logging? Odd question, I know, but like I said in JIRA posting, when I took log4j.jar out of the classpath and commons-logging fell back to it's defaut configuration, I had no problems. (Only running the demonstration from the command line, though, not from ant.)
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greg_barton
 Post subject:
PostPosted: Fri Sep 05, 2003 12:51 pm 
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Location: Richardson, TX
And, I forgot to say, thanks a whole heap for your work. :D
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gavin
 Post subject:
PostPosted: Fri Sep 05, 2003 9:15 pm 
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
OK, I managed to reproduce it now. I'll take a closer look.
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gavin
 Post subject:
PostPosted: Fri Sep 05, 2003 10:15 pm 
Hibernate Team
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Joined: Tue Aug 26, 2003 12:50 pm
Posts: 5130
Location: Melbourne, Australia
Fixed in 2.1 and 2.0 branches.

A one line change, heres the diff


diff -r1.32.2.17 NormalizedEntityPersister.java
755c755
< int idColumnSpan = getIdentifierType().getColumnSpan(factory);
---
> int idColumnSpan = super.getIdentifierColumnNames().length;
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greg_barton
 Post subject:
PostPosted: Sun Sep 07, 2003 8:21 pm 
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Joined: Tue Aug 26, 2003 1:24 pm
Posts: 213
Location: Richardson, TX
d00d, you r0xr! :)
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