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From Al Lias <al.l...@gmx.de>
Subject Re: Data Nucleus and HBase - Problems during Update
Date Mon, 01 Feb 2010 12:58:40 GMT
Am 27.01.2010 23:36, schrieb dShaman:
> 
> I was able to get a Java based client up using Hbase which seems to work just
> fine, but when I stuck a JDO layer on top via DataNucleus, I got some weird
> behavior during update.  It seemed liked I could insert records, delete
> records, and read records, but when I try to do an update, the record gets
> removed!
> 
> Has anyone else had an issue like this?  My testing code was pretty
> primitive so I'm wondering if it might be a configuration issue with
> hbase/zookeeper or something else:
> 
> public void test() {
>   File propsFile = new
> File(AbstractPersistenceTest.DATA_NUCLEUS_PROPERTIES);
>   PersistenceManagerFactory pmf =
> JDOHelper.getPersistenceManagerFactory(propsFile);    
>   PersistenceManager pm = pmf.getPersistenceManager();
> 	  
>   Transaction tx = pm.currentTransaction();
>   Fake entity = null;
>   try {
>     tx.begin();
>     entity = createEntity();
>     pm.makePersistent(entity);
>     tx.commit();            
>   } finally {
>     if (tx.isActive()) {
>       tx.rollback();
>     }
>   }
>     
>   String oldUUID = entity.getId();    
>   String updatedName = "New Name";   
>   tx = pm.currentTransaction();
>   try {
>     tx.begin();
>     Fake readEntity = null;    
>     readEntity = (Fake)pm.getObjectById(entity.getClass(), entity.getId());    
>     readEntity.setName(updatedName);
>     tx.commit();
>   } finally {
>     if (tx.isActive()) {
>       tx.rollback();
>     }
>   }
>     
>   Fake updatedEntity = (Fake)pm.getObjectById(entity.getClass(), oldUUID);
> // fails here.  can't find record
>   assertEquals(updatedName, updatedEntity.getName());   
> }


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