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 Post subject: Registering a new DataStore provider
PostPosted: Mon Apr 03, 2017 6:13 am 
Newbie

Joined: Mon Apr 03, 2017 6:04 am
Posts: 4
I am developing a new datastore provider using NeoEmf.
I have based my code on the cassandra code as it seems to be the closest to what I want to provide.

I have some basic functionality coded and would like to run some tests to try to understand more how the implementation should work.
However, when I try to run the tests I am getting an exception:
Code:
...
Caused by: java.lang.ClassNotFoundException: Could not load requested class : neoemf_experimental
   at org.apache.maven.surefire.junit4.JUnit4Provider.execute(JUnit4Provider.java:367)
   at org.apache.maven.surefire.junit4.JUnit4Provider.executeWithRerun(JUnit4Provider.java:274)
   at org.apache.maven.surefire.junit4.JUnit4Provider.executeTestSet(JUnit4Provider.java:238)
   at org.apache.maven.surefire.junit4.JUnit4Provider.invoke(JUnit4Provider.java:161)


Which I assume means that hibernate can not locate my datastore implementation.

My hibernate.properties looks like this:
Code:
hibernate.ogm.datastore.provider=neoemf_experimental


But I am guessing I am missing a pice of glue to tie this to my NeoEmf class:
Code:
public class NeoEmf implements DatastoreConfiguration<GlobalContext<?, ?>> {

   /**
    * Short name of this data store provider.
    *
    * @see OgmProperties#DATASTORE_PROVIDER
    */
   public static final String DATASTORE_PROVIDER_NAME = "NEOEMF_EXPERIMENTAL";

   @Override
   public GlobalContext<?, ?> getConfigurationBuilder(ConfigurationContext context) {
      return GenericOptionModel.createGlobalContext( context );
   }
}


Any pointers are welcome.


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 Post subject: Re: Registering a new DataStore provider
PostPosted: Thu Apr 06, 2017 7:14 am 
Hibernate Team
Hibernate Team

Joined: Fri Sep 09, 2011 3:18 am
Posts: 287
Hi,
the short name approach only works for the datastores included in `org.hibernate.ogm.datastore.imp.DatastoreProviderType`.
At the moment, I'm afraid you need to use the class name for the datastore porvider you want to add.

Something like
Code:
org.hibernate.ogm.datastore.mongodb.impl.MongoDBDatastoreProvider
.

Davide


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 Post subject: Re: Registering a new DataStore provider
PostPosted: Fri Apr 07, 2017 5:18 am 
Newbie

Joined: Mon Apr 03, 2017 6:04 am
Posts: 4
Hi,
Thaks for the information. Used the qualified name and it worked.

Cheers,

Horacio


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