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[Teneo] Adding EPackages Dynamically to DataStore [message #938743]

Wed, 10 October 2012 05:39

Appasamy Thirugnana

Messages: 27
Registered: September 2012

Junior Member

Hi Everyone,

Is there anyway I can dynamically include EPackages in to datastore during runtime ?

My Code:

//Initializing with a simple EPackage

EPackage[] epacks = new EPackage[]{EcoreFactory.eINSTANCE.createEPackage()};
hbds.setEPackages(epacks);
hbds.initialize();

.....

Later updating Registry with actual EPackages.

 EPackage.Registry.INSTANCE.put( epack.getNsURI(), epack );

Will Teneo automatically pick from global EPackage.Registry the packages at runtime?

Teneo gives me below error:

java.lang.IllegalArgumentException: No annotated model element present for: type EClass has its epackage been registered with Teneo?

Thanks and Regards,
Appasamy

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Re: [Teneo] Adding EPackages Dynamically to DataStore [message #938802 is a reply to message #938743]

Wed, 10 October 2012 06:59

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Hi Appasamy,
I am afraid that this won't work like this. The datastore should be initialized with the actual epackage instance. So if
you have new epackages then you need to initialize the datastore again with those.

gr. Martin

On 10/10/2012 07:39 AM, Appasamy Thirugnana wrote:
> Hi Everyone,
>
> Is there anyway I can dynamically include EPackages in to datastore during runtime ?
>
> My Code:
>
> //Initializing with a simple EPackage
> EPackage[] epacks = new EPackage[]{EcoreFactory.eINSTANCE.createEPackage()};
> hbds.setEPackages(epacks);
> hbds.initialize();
>
> .....
>
>
> Later updating Registry with actual EPackages.
>
> EPackage.Registry.INSTANCE.put( epack.getNsURI(), epack );
>
> Will Teneo automatically pick from global EPackage.Registry the packages at runtime?
>
> Teneo gives me below error:
>
> java.lang.IllegalArgumentException: No annotated model element present for: type EClass has its epackage been registered
> with Teneo?
>
>
> Thanks and Regards,
> Appasamy
>
>
>
>
>
>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@xxxxxxxx - mtaal@xxxxxxxx
Web: www.springsite.com - www.elver.org

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Re: [Teneo] Adding EPackages Dynamically to DataStore [message #938818 is a reply to message #938802]

Wed, 10 October 2012 07:21

Appasamy Thirugnana

Messages: 27
Registered: September 2012

Junior Member

Hi Martin,

Thanks for the input.

Ok I understood that I have to reinitialize the data store and I am following

http://wiki.eclipse.org/Teneo/Hibernate/Dynamic_EMF_Tutorial#Create_and_persist_Dynamic_EObject

Here will there be a problem if 5 concurrent users trying to persist instances using the datastore and one of the user triggers for reinitialization of datastore.

Will teneo manage to hold the reinitialization till all the transactions get complete and execute re-initialization later.

We have a spring web application with Sessionfactory implemented as per below configuration.
sebthom.de/152-configuring-emf-teneo-hibernate-dbcp-spring-transactions-opensessioninviewfilter/

Thanks ,

Appasamy

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Re: [Teneo] Adding EPackages Dynamically to DataStore [message #938823 is a reply to message #938802]

Wed, 10 October 2012 07:27

Appasamy Thirugnana

Messages: 27
Registered: September 2012

Junior Member

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Re: [Teneo] Adding EPackages Dynamically to DataStore [message #938859 is a reply to message #938823]

Wed, 10 October 2012 08:10

Martin Taal

Messages: 5468
Registered: July 2009

Senior Member

Hi Appasamy,
Re-initializing the datastore is the same as re-initializing the sessionfactory. In most application the
sessionfactory/datastore is setup/initialized when the application starts not during normal operation.

If you have a dynamic model, then the best way is to create a new datastore with the new epackages and then after
initializing the new datastore switch the old and new one in a thread-safe way. This is quite doable.

gr. Martin

On 10/10/2012 09:27 AM, Appasamy Thirugnana wrote:
> Hi Martin,
>
> Thanks for the input.
> Ok I understood that I have to reinitialize the data store and I am following
>
> http://wiki.eclipse.org/Teneo/Hibernate/Dynamic_EMF_Tutorial#Create_and_persist_Dynamic_EObject
>
>
> Here will there be a problem if 5 concurrent users trying to persist instances using the datastore and one of the user
> triggers for reinitialization of datastore.
>
> Will teneo manage to hold the reinitialization till all the transactions get complete and execute re-initialization later.
>
>
> We have a spring web application with Sessionfactory implemented as per below configuration.
> sebthom.de/152-configuring-emf-teneo-hibernate-dbcp-spring-transactions-opensessioninviewfilter/
>
>
> Thanks ,
>
> Appasamy
>

--

With Regards, Martin Taal

Springsite/Elver.org
Office: Hardwareweg 4, 3821 BV Amersfoort
Postal: Nassaulaan 7, 3941 EC Doorn
The Netherlands
Cell: +31 (0)6 288 48 943
Tel: +31 (0)84 420 2397
Fax: +31 (0)84 225 9307
Mail: mtaal@xxxxxxxx - mtaal@xxxxxxxx
Web: www.springsite.com - www.elver.org

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