Fast Object Database for Java - with JPA/JDO support

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Problem to use find method on an abstract Class: AbstractMethodError is thrown

find method mentioning SentenceStatement everything works just fine but when I use this method ... for a better ease this is the stack trace when I try to find LogicalObject: 08:17:21,359 INFO [org ... ) JBAS014101: Failed to find SFSB instance with session ID {[-48, -118, 126, 59, 2, -122, 72, 57, -75

Blocked by find

"find" method. If nothing is returned from the db the passed object is persisted to the db. I have 5 ... somewhere in the find. The thread dump looks like: Name: DEV1-WSAgent-1-Existing/3 State: RUNNABLE Total ... .find( - locked com.objectdb.jdo.PMImpl@ae89a com.objectdb.jpa.EMImpl.find

find() delay

(o); trans.commit();} 2, for 1 to 30 {p = em.find(typeC.class, i); print(p)} So simple a test ... is enabled. support Support L2 cache? I'm not sure. But why the second find() will output? By the way ... .getResultList(); // this works 3. typeC p = em.find(typeC.class, i); // this p will be null I'm doubting

Unexpected exception (Error 990) on find

) at com.objectdb.jpa.EMImpl.find( at com.objectdb.jpa.EMImpl.find( ... $SharedEntityManagerInvocationHandler.invoke( at $Proxy33.find(Unknown Source) at local.jpa ... is interesting and may be relevant. The exception is thrown during find. What entity key type

Sometimes the ObjectDB throws an internal expeption if a find() was executed

Sometimes the ObjectDB throws an internal exception if a find() was executed. It is a sporadic ... ) at com.objectdb.jpa.EMImpl.find( at com.objectdb.jpa.EMImpl.find( ... .g( at com.objectdb.o.OBC.aN( at com.objectdb.jpa.EMImpl.find

find out if an entity is refered by other entities

Hello, it is possible to find out if a child entity is just referenced by other parent entity types. But the types of the parent entities are unknown. Is there a possibility to find out if an entity is referenced? best regards btc_es BTC EmbeddedSystems You can only find it (using a query

NPE when doing a find()

.find(User.class, 1). Then this happens: [ObjectDB 2.2.1_02] Unexpected exception (Error 990 ... ) at com.objectdb.jpa.EMImpl.find( at com.objectdb.jpa.EMImpl.find(

EM.find() is suddenly slower

We have a new performance bottleneck, if we use EM.find() on the same entity type 10.000 times in order to get 10.000 different entity instances. For use cases which call the EM.find() only 1000 ... for the start path where you can find the hotspot in the profiling. btc_es BTC EmbeddedSystems Thanks

Error when trying to open the Explorer (failed to find Java VM)

get this windows error: "Failed to find Java VM". What is the problem? dreckguy Ophir Haramaty Have you tried ... to find Java VM. and the windows startup error is shown By trying explorer-b.exe I get just ... and on windows using explorer.jar works as supposed. so after finding the jar file start

InternalException during EntityManager.find()

.onObjectDBError( ~[na:na] at com.objectdb.jpa.EMImpl.find( ~[na:na] at com.objectdb.jpa.EMImpl.find( ~[na:na] at com.btc.ep.expression.dal.internal ... .objectdb.jpa.EMImpl.find( ~[na:na] ... 45 common frames omitted btc_es BTC

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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