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Restrict by class in query

of type Folder (I have a class hierarchy in which both Link and Folder are subclasses of a common root ... name into the database, and execute the above query, I get a List<Folder> with two entries in ... ) call to fetch the result. Am I doing something wrong to make sure that I only get folders in

ObjectDB and Hibernate in one JVM?

Hi all, I need to persist my application data and also access a legacy RDBMS system in the same ... system to access RDBMS. Is it possible to use both ObjectDB and Hibernate in the same application ... You can use both Hibernate and ObjectDB in the same Java application. If the Hibernate version

Using aliases in WHERE clause

.status IS NOT NULL Unfortunately, 'i' alias doesn't work in WHERE clause : Query Execution Error ... ProjectPartInfo ppi WHERE  ==> i <== .status IS NOT NULL When i change 'i' to 'ppi.inquiries' in ... WHERE ppi.inquiries.status IS NOT NULL However, 'i' alias works in ORDER clause (query below also runs

Running doctor.jar with entity classes in classhpath

.jar (my entity classes in it) in classpath but it doesn't work (new entities still dont show up in explorer). Could it be possible to add that kind of feature in next relase ? I run doctor by ... , you can follow these 2 steps: Run the Explorer with the new class in the classpath:     java -cp

internal object DB locking in an embedded multi threaded application

Hi, we are using Embeded objectDB 2.4.4_06 in a highly multithreaded concurrent manner and we have noticed a performance problem in our application that seems to be attributed to ObjectDb's internal locking. When profiling our app in JVisualVm we notice a large number of threads are blocked

Wrong data stored in date only fileds

: start of recording in local time zone private Date startDate; // Date: date ... /10/2015 Madrid time (when clock goes back 1 hour at 3am), Object DB puts wrong data in the fields ... . Here are the values used to set the fields before adding the objects (in the attached DB) to the DB: Record

Password in Embedded Mode?

Is there a way to setup a database file that will be accessed in embedded mode ... without providing the correct password when obtaining a connection. In my case, I'm interested in ... ) only in client-server mode. It seems that in embedded mode password protection would be useful

NullPointerException in __odbGetNumMember

Hi, When deleting an entity "Mitglied" -> everything works fine. Trying to delete another one (in a separate transaction) always causes a NullPointer Exception in __odbGetNumMember line 1 of the enhanced Mitglied class. I am unable to replicate it in a simple testcase but it always happens in

Exception in thread "ODB-StoreHandler-5094" java.lang.NullPointerException

is occurring in our data. At the very least, it does appear that ODB read/write threads are terminating ... and identify why they are not showing up in the ODB log, and why they are bubbling up out of ObjectDb's ... version/build number of ObjectDB that you use in production? support Support

Internal exception: NPE on criteria query with IN clause and empty collection

Hello ObjectDB team, I receive following exception in my application: [ObjectDB 2.7.3_01 ... already narrowed the cause to the fact that I use JPA criteria query API, and I pass an empty collection to IN ... (rootService); cq.where(rootService.get("key").in(templateKeys)); //templateKeys is empty by mistake

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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