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forum_thread

collection of embedded objects

1. In general, are there any restrictions of the use of @Embedded objects in collections, compared to @Entity? 2. If you have a large nested collection of @Embedded objects, and you remove the parent @Entity, does the remove cascade through the whole collection? 3. Is searching through collections of @Embedded objects more expensive (time) than searching through collections of @Entity? ... queries will run faster when using embedded objects, but not always. ObjectDB Support ObjectDB - Fast ...

 
issue

[ObjectDB 2.3.7_08] Unexpected exception (Error 990)

Hello there, I've encountered InternalException from ObjectDB. Attached the stacktrace below. I would require your assistance and advise on resolving this issue. Likewise, I would provide any information that you require. Thank you. ... which is now fixed. I suppose that ObjectDB could not have known first-hand if a field is null when toString() is invoked. Thus ...

 
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app.jelastic.eapps.com and objectdb

It seems that this web hosting service doesn't support objectdb and that is frustrating. Does anyone know a way around this? pls help a brother... ... to the project), so it is very unlikely that this will not be supported. ObjectDB Support ObjectDB - ...

 
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exception thrown when try to run explorer again?

hello , when i try to launch explorer.jar i got this error: ... , and the error indicates that  objectdb.jar is not available in the classpath. ObjectDB Support ...

 
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How to Use a SF with extended Persistence Context?

Hey, I have a problem to use SF with an Extended Persistence Context Regarding to Transactions. The need for an extended persistence Context emerges for the need to create queries in advance for fast execution so I need to store the queries and I need an EntityManager that doesn't get closed between calls. When I call the SF directly no problem happens but if I use SL to hold a reference to the SF I get com.objectdb.o._PersistenceException: Attempt to begin a new transaction when a transaction is active. ... it finds one it updater his date to the current date. if not, it stores a new one using the persist method of the GuestDao. ...

 
manual

Chapter 6 - Configuration

Explains how to configure and tune ObjectDB, the fast Java object database for JPA/JDO.... ... If a configuration file is not found default values are used. General Configuration ...

 
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Pessimestic Locking doesn't release when application unexpectedly terminates.

Hi, We have several services in our app framework that we want to use a cluster singleton. Our approach to this was to use Objectdb's pessimestic locking. This seems to work, but if the owner of the current pessimestic lock abruptly quits without releasing the lock it doesn't get released.    Is there anyway the server can detect that a client (lock owner is no longer connected) and therefore release the lock ?   Thank you   Paul Newman ... A possible solution (which is currently not implemented) is to use pessimistic locking with expiration time. For ...

 
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com.objectdb.o.NLV cannot be cast to com.objectdb.o.CMV

We are using ObjectDB 2.5.1_04. The following JPQL query causes an internal exception: SELECT COUNT(r) FROM RecordingMetaData AS r WHERE ((r.mapFromCli LIKE '192.168.10.13%' ESCAPE '\')) The exception: ... tried fixing the indices with the Doctor tool and it did not help. Then we deleted the DB file, and re-created the Db from scratch. Again, it did not help - same problem. Are you saying that only a non-NULL members ...

 
issue

delete of a collection in explorer changes type

accidently we used the option delete on a collection of type ArrayList<ObjectNode>. On doing so the type changed to List<ObjectNode>. How can we change that back again ? ... Anyway, it is just the explorer display and should not have any further effect on the database itself. ...

 
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IMK Stall with certain query

Hello, I am experiencing constant IMK Stall notifications from Java when using certain query: 2015-09-01 16:53:15.785 java[3678:5217999] IMK Stall detected, *please Report* your user scenario in <rdar://problem/16792073> - (imkxpc_deadKeyStateWithReply:) block performed very slowly (4.63 secs) i am sure it is linked with objectdb as these are thrown each time one particular query is used: ... you have many orders. Indexes on buyerId (if not the PK) and buyerName may improve performance.   ...