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Home » Modeling » EMF "Technology" (Ecore Tools, EMFatic, etc) » [Teneo] Can't add data

Thu, 01 March 2007 14:48

Eclipse User

(oops -- forgot to put [Teneo] on subject)

I'm trying to add some emf objects like in the tutorial step 3. I can
create the root object, but then when I try to add something to a list in
that object, it doesn't work. The Server object below returns an
EList<Plugin> object. When I add a Plugin object to the EList, it seems to
work, but then when I read it back again, nothing is there. I put in a
flush, and reopened the session to see what would happen, and even
re-queried, but no use. I must be doing something incorrectly. Any ideas?

public Server addPlugin(String serverID,Plugin plugin) throws
ModelServiceException
{
Session session=sessionFactory.openSession();
Query query=session.createQuery("FROM Server where id='"+serverID+"'");
Server server=(Server)query.list().get(0);
getLogger().info("initial plugin count:"+server.getPlugins().size());
session.beginTransaction();
server.getPlugins().add(plugin);
session.getTransaction().commit();
session.flush();
session.close();
session=sessionFactory.openSession();
query=session.createQuery("FROM Server where id='"+serverID+"'");
server=(Server)query.list().get(0);
getLogger().info("new plugin count:"+server.getPlugins().size());
return server;

}

Output from the log statements shows count of zero.

Re: [Teneo] Can't add data [message #73438 is a reply to message #73414]

Thu, 01 March 2007 14:59

Eclipse User

Hi Paul,
Can you try to do session.saveOrUpdate(server) just before the commit?

gr. Martin

Paul Gardiner wrote:
> (oops -- forgot to put [Teneo] on subject)
>
> I'm trying to add some emf objects like in the tutorial step 3. I can
> create the root object, but then when I try to add something to a list in
> that object, it doesn't work. The Server object below returns an
> EList<Plugin> object. When I add a Plugin object to the EList, it seems to
> work, but then when I read it back again, nothing is there. I put in a
> flush, and reopened the session to see what would happen, and even
> re-queried, but no use. I must be doing something incorrectly. Any ideas?
>
> public Server addPlugin(String serverID,Plugin plugin) throws
> ModelServiceException
> {
> Session session=sessionFactory.openSession();
> Query query=session.createQuery("FROM Server where id='"+serverID+"'");
> Server server=(Server)query.list().get(0);
> getLogger().info("initial plugin count:"+server.getPlugins().size());
> session.beginTransaction();
> server.getPlugins().add(plugin);
> session.getTransaction().commit();
> session.flush();
> session.close();
> session=sessionFactory.openSession();
> query=session.createQuery("FROM Server where id='"+serverID+"'");
> server=(Server)query.list().get(0);
> getLogger().info("new plugin count:"+server.getPlugins().size());
> return server;
>
> }
>
> Output from the log statements shows count of zero.
>
>
>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org

Re: [Teneo] Can't add data [message #73457 is a reply to message #73438]

Thu, 01 March 2007 15:08

Eclipse User

I had tried session.update(server) before, but I tried save and saveOrUpdate
as well, and I still get the same result.

Just to make sure I'm initializing correctly, here's the body of my
initialization method:

store = HbHelper.INSTANCE.createRegisterDataStore(DATA_STORE_NAME);
store.setEPackages(new EPackage[] { ModelPackage.eINSTANCE });
store.initialize();
sessionFactory = store.getSessionFactory();

In particular, is the setEPackages correct?

"Martin Taal" wrote in message news:es7bb2$tlq$1@utils.eclipse.org...
> Hi Paul,
> Can you try to do session.saveOrUpdate(server) just before the commit?
>
> gr. Martin
>
> Paul Gardiner wrote:
>> (oops -- forgot to put [Teneo] on subject)
>>
>> I'm trying to add some emf objects like in the tutorial step 3. I can
>> create the root object, but then when I try to add something to a list in
>> that object, it doesn't work. The Server object below returns an
>> EList<Plugin> object. When I add a Plugin object to the EList, it seems
>> to
>> work, but then when I read it back again, nothing is there. I put in a
>> flush, and reopened the session to see what would happen, and even
>> re-queried, but no use. I must be doing something incorrectly. Any
>> ideas?
>>
>> public Server addPlugin(String serverID,Plugin plugin) throws
>> ModelServiceException
>> {
>> Session session=sessionFactory.openSession();
>> Query query=session.createQuery("FROM Server where id='"+serverID+"'");
>> Server server=(Server)query.list().get(0);
>> getLogger().info("initial plugin count:"+server.getPlugins().size());
>> session.beginTransaction();
>> server.getPlugins().add(plugin);
>> session.getTransaction().commit();
>> session.flush();
>> session.close();
>> session=sessionFactory.openSession();
>> query=session.createQuery("FROM Server where id='"+serverID+"'");
>> server=(Server)query.list().get(0);
>> getLogger().info("new plugin count:"+server.getPlugins().size());
>> return server;
>>
>> }
>>
>> Output from the log statements shows count of zero.
>>
>>
>>
>
>
> --
>
> With Regards, Martin Taal
>
> Springsite/Elver.org
> Office: Hardwareweg 4, 3821 BV Amersfoort
> Postal: Nassaulaan 7, 3941 EC Doorn
> The Netherlands
> Tel: +31 (0)84 420 2397
> Fax: +31 (0)84 225 9307
> Mail: mtaal@springsite.com - mtaal@elver.org
> Web: www.springsite.com - www.elver.org

Re: [Teneo] Can't add data [message #73474 is a reply to message #73457]

Thu, 01 March 2007 15:16

Eclipse User

Yes it looks fine. Can you print the mapping xml (store.getMappingXML()) and then post the mapping
for the server eclass?
Can you try to make other changes to the server object to see if they are persisted (or not)?

gr. Martin

Paul Gardiner wrote:
> I had tried session.update(server) before, but I tried save and saveOrUpdate
> as well, and I still get the same result.
>
> Just to make sure I'm initializing correctly, here's the body of my
> initialization method:
>
> store = HbHelper.INSTANCE.createRegisterDataStore(DATA_STORE_NAME);
> store.setEPackages(new EPackage[] { ModelPackage.eINSTANCE });
> store.initialize();
> sessionFactory = store.getSessionFactory();
>
> In particular, is the setEPackages correct?
>
> "Martin Taal" wrote in message news:es7bb2$tlq$1@utils.eclipse.org...
>> Hi Paul,
>> Can you try to do session.saveOrUpdate(server) just before the commit?
>>
>> gr. Martin
>>
>> Paul Gardiner wrote:
>>> (oops -- forgot to put [Teneo] on subject)
>>>
>>> I'm trying to add some emf objects like in the tutorial step 3. I can
>>> create the root object, but then when I try to add something to a list in
>>> that object, it doesn't work. The Server object below returns an
>>> EList<Plugin> object. When I add a Plugin object to the EList, it seems
>>> to
>>> work, but then when I read it back again, nothing is there. I put in a
>>> flush, and reopened the session to see what would happen, and even
>>> re-queried, but no use. I must be doing something incorrectly. Any
>>> ideas?
>>>
>>> public Server addPlugin(String serverID,Plugin plugin) throws
>>> ModelServiceException
>>> {
>>> Session session=sessionFactory.openSession();
>>> Query query=session.createQuery("FROM Server where id='"+serverID+"'");
>>> Server server=(Server)query.list().get(0);
>>> getLogger().info("initial plugin count:"+server.getPlugins().size());
>>> session.beginTransaction();
>>> server.getPlugins().add(plugin);
>>> session.getTransaction().commit();
>>> session.flush();
>>> session.close();
>>> session=sessionFactory.openSession();
>>> query=session.createQuery("FROM Server where id='"+serverID+"'");
>>> server=(Server)query.list().get(0);
>>> getLogger().info("new plugin count:"+server.getPlugins().size());
>>> return server;
>>>
>>> }
>>>
>>> Output from the log statements shows count of zero.
>>>
>>>
>>>
>>
>> --
>>
>> With Regards, Martin Taal
>>
>> Springsite/Elver.org
>> Office: Hardwareweg 4, 3821 BV Amersfoort
>> Postal: Nassaulaan 7, 3941 EC Doorn
>> The Netherlands
>> Tel: +31 (0)84 420 2397
>> Fax: +31 (0)84 225 9307
>> Mail: mtaal@springsite.com - mtaal@elver.org
>> Web: www.springsite.com - www.elver.org
>
>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org

Re: [Teneo] Can't add data [message #73873 is a reply to message #73457]

Tue, 06 March 2007 21:29

Eclipse User

Call session.save(plugin) before calling
server.getPlugins().add(plugin);

I have noticed that EObjects instantiated by the model factory don't have
the right EList implementations until teneo becomes aware of them (thru the
session).
In particular, the first call to EList.add does not seem to work but
subsequent ones do.

If you left out session.save(plugin) but called the following line twice,
you would get a reference to the plugin.
server.getPlugins().add(plugin);

Disclaimer: maybe I am completely wrong about this but moving my
session.save call up just fixed a problem that I was having adding
references too.
-mike

"Paul Gardiner" <pgardiner@syntellect.com> wrote in message
news:es7bso$upu$1@utils.eclipse.org...
>I had tried session.update(server) before, but I tried save and
>saveOrUpdate as well, and I still get the same result.
>
> Just to make sure I'm initializing correctly, here's the body of my
> initialization method:
>
> store = HbHelper.INSTANCE.createRegisterDataStore(DATA_STORE_NAME);
> store.setEPackages(new EPackage[] { ModelPackage.eINSTANCE });
> store.initialize();
> sessionFactory = store.getSessionFactory();
>
> In particular, is the setEPackages correct?
>
> "Martin Taal" wrote in message news:es7bb2$tlq$1@utils.eclipse.org...
>> Hi Paul,
>> Can you try to do session.saveOrUpdate(server) just before the commit?
>>
>> gr. Martin
>>
>> Paul Gardiner wrote:
>>> (oops -- forgot to put [Teneo] on subject)
>>>
>>> I'm trying to add some emf objects like in the tutorial step 3. I can
>>> create the root object, but then when I try to add something to a list
>>> in
>>> that object, it doesn't work. The Server object below returns an
>>> EList<Plugin> object. When I add a Plugin object to the EList, it seems
>>> to
>>> work, but then when I read it back again, nothing is there. I put in a
>>> flush, and reopened the session to see what would happen, and even
>>> re-queried, but no use. I must be doing something incorrectly. Any
>>> ideas?
>>>
>>> public Server addPlugin(String serverID,Plugin plugin) throws
>>> ModelServiceException
>>> {
>>> Session session=sessionFactory.openSession();
>>> Query query=session.createQuery("FROM Server where
>>> id='"+serverID+"'");
>>> Server server=(Server)query.list().get(0);
>>> getLogger().info("initial plugin count:"+server.getPlugins().size());
>>> session.beginTransaction();
>>> server.getPlugins().add(plugin);
>>> session.getTransaction().commit();
>>> session.flush();
>>> session.close();
>>> session=sessionFactory.openSession();
>>> query=session.createQuery("FROM Server where id='"+serverID+"'");
>>> server=(Server)query.list().get(0);
>>> getLogger().info("new plugin count:"+server.getPlugins().size());
>>> return server;
>>>
>>> }
>>>
>>> Output from the log statements shows count of zero.
>>>
>>>
>>>
>>
>>
>> --
>>
>> With Regards, Martin Taal
>>
>> Springsite/Elver.org
>> Office: Hardwareweg 4, 3821 BV Amersfoort
>> Postal: Nassaulaan 7, 3941 EC Doorn
>> The Netherlands
>> Tel: +31 (0)84 420 2397
>> Fax: +31 (0)84 225 9307
>> Mail: mtaal@springsite.com - mtaal@elver.org
>> Web: www.springsite.com - www.elver.org
>
>

Re: [Teneo] Can't add data [message #73891 is a reply to message #73873]

Tue, 06 March 2007 21:50

Eclipse User

Mike,
Just for my understanding, what do you mean with this part of your post?
> If you left out session.save(plugin) but called the following line twice,
> you would get a reference to the plugin.
> server.getPlugins().add(plugin);

gr. Martin

Michael Kanaley wrote:
> Call session.save(plugin) before calling
> server.getPlugins().add(plugin);
>
> I have noticed that EObjects instantiated by the model factory don't have
> the right EList implementations until teneo becomes aware of them (thru the
> session).
> In particular, the first call to EList.add does not seem to work but
> subsequent ones do.
>
> If you left out session.save(plugin) but called the following line twice,
> you would get a reference to the plugin.
> server.getPlugins().add(plugin);
>
> Disclaimer: maybe I am completely wrong about this but moving my
> session.save call up just fixed a problem that I was having adding
> references too.
> -mike
>
>
> "Paul Gardiner" <pgardiner@syntellect.com> wrote in message
> news:es7bso$upu$1@utils.eclipse.org...
>> I had tried session.update(server) before, but I tried save and
>> saveOrUpdate as well, and I still get the same result.
>>
>> Just to make sure I'm initializing correctly, here's the body of my
>> initialization method:
>>
>> store = HbHelper.INSTANCE.createRegisterDataStore(DATA_STORE_NAME);
>> store.setEPackages(new EPackage[] { ModelPackage.eINSTANCE });
>> store.initialize();
>> sessionFactory = store.getSessionFactory();
>>
>> In particular, is the setEPackages correct?
>>
>> "Martin Taal" wrote in message news:es7bb2$tlq$1@utils.eclipse.org...
>>> Hi Paul,
>>> Can you try to do session.saveOrUpdate(server) just before the commit?
>>>
>>> gr. Martin
>>>
>>> Paul Gardiner wrote:
>>>> (oops -- forgot to put [Teneo] on subject)
>>>>
>>>> I'm trying to add some emf objects like in the tutorial step 3. I can
>>>> create the root object, but then when I try to add something to a list
>>>> in
>>>> that object, it doesn't work. The Server object below returns an
>>>> EList<Plugin> object. When I add a Plugin object to the EList, it seems
>>>> to
>>>> work, but then when I read it back again, nothing is there. I put in a
>>>> flush, and reopened the session to see what would happen, and even
>>>> re-queried, but no use. I must be doing something incorrectly. Any
>>>> ideas?
>>>>
>>>> public Server addPlugin(String serverID,Plugin plugin) throws
>>>> ModelServiceException
>>>> {
>>>> Session session=sessionFactory.openSession();
>>>> Query query=session.createQuery("FROM Server where
>>>> id='"+serverID+"'");
>>>> Server server=(Server)query.list().get(0);
>>>> getLogger().info("initial plugin count:"+server.getPlugins().size());
>>>> session.beginTransaction();
>>>> server.getPlugins().add(plugin);
>>>> session.getTransaction().commit();
>>>> session.flush();
>>>> session.close();
>>>> session=sessionFactory.openSession();
>>>> query=session.createQuery("FROM Server where id='"+serverID+"'");
>>>> server=(Server)query.list().get(0);
>>>> getLogger().info("new plugin count:"+server.getPlugins().size());
>>>> return server;
>>>>
>>>> }
>>>>
>>>> Output from the log statements shows count of zero.
>>>>
>>>>
>>>>
>>>
>>> --
>>>
>>> With Regards, Martin Taal
>>>
>>> Springsite/Elver.org
>>> Office: Hardwareweg 4, 3821 BV Amersfoort
>>> Postal: Nassaulaan 7, 3941 EC Doorn
>>> The Netherlands
>>> Tel: +31 (0)84 420 2397
>>> Fax: +31 (0)84 225 9307
>>> Mail: mtaal@springsite.com - mtaal@elver.org
>>> Web: www.springsite.com - www.elver.org
>>
>
>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@springsite.com - mtaal@elver.org
Web: www.springsite.com - www.elver.org

Re: [Teneo] Can't add data [message #603052 is a reply to message #73414]

Thu, 01 March 2007 14:59

Eclipse User