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Dirty checking

, so that I can update views which are observing those objects. It seems that the JPA lifecycle ... of a @Version field that is updated automatically for every entity object when it is changed ... to the database. 5) The server pushes changes to the client which updates its view. In the Javascript

Error 990... and then new version?

-sounding database. :) joshua Joshua Chambers Ah, but the Error 990 is back! But with an updated version this time! Here is updated (and filtered for brevity) stacktrace: [ObjectDB 2.7.1] Unexpected ... you for the update. Could you please explain what the cause was and how you solved it? The stack trace

Wrong @Id type

Novaković There was a bug in UPDATE queries that was fixed. Please see this forum thread. Which ObjectDB ... an ObjectDB version before the fix, with an UPDATE queries that change the IDs to the correct type ... you mentioned because we don't use UPDATE queries. Also we have noticed that using tree view of ObjectDB

Query performance in general

? Or are the statistics created/updated automatically by some internal mechanism? Thank ... orders. To use the new "objectdb statistics" update you need to use ObjectDB version 2.8.1 or later ... ). It is not updated automatically. You have to run the "objectdb statistics" virtual query after major data

Access entity version before commit transaction

Hi, I have a usecase where I need to write the updated entity version to the database before ... containing the new version of the entity So I need to access the version of an updated entity inside ... of the entity ObjectDB seems to update the version field automatically. But if I just set a String

Need help to analyse very high memory usage by objectdb (PRU, SEV, VAL[])

/ update transactions, with large amount of data pending to be written to the database on commit ... with generation or update of entities? We had not created many entries and deleted ... for writing to the database (until transaction commit), so with many updates or updates of large objects this is possible. support Support

2.7.3_03 Erroneous "Attempt to modify a primary key of a managed object"

require database schema change (automatically updates and just works)? I tried 2.7.3_05 ... the issue, tested with ObjectDB 2.7.3_05. CBE CBE Good. Thank you for the update. I wonder ... was now updated to avoid further confusion. support Support still happening in 2.7.4_04 I rolled

Failed to read the value of field using reflection (error 363)

, please check the database with the ObjectDB Doctor and post the results. support Support I wish to update ... . After updating to 1.6 u39 (around 3 hours ago), we have not encountered the problem since. We also reverted the ObjectDB JAR to [2.3.7_08] after the update. If you need more information, I'll do my best to provide

query hint

you must also update the sample database statistics, by running a special query: public class UpdateStat ... ();     } } With this sample database after updating its statistics, that index is used correctly ... is still around 5 times slower than with version 2.7 hgzpincher Hans-Georg Zwicker update: no significant

Pessimistic lock timeout - blocks indefinitely

to update the object. I'm using a pessimistic lock with timeout as follows: Map<String,Object ... ); One thread manages to do its update but the others remain blocked (for longer than 5000ms at least - I ... the LockTimeoutExceptions are expected. Here "updater4" gets the object first and performs an update

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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