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Subquery error

My query: TypedQuery<Station> query = em.createQuery("SELECT p FROM Station p WHERE rid = (SELECT p FROM Station p where tpl='York') AND tpl != 'York'", Station.class);   Error: #1 2016-02-24 09:47 My query: TypedQuery<Station> query = em. createQuery ( "SELECT p FROM Station p WHER ...

 
manual

ObjectDB 1.0 Manual

Welcome to the ObjectDB for Java/JDO Developer's Guide. Here you can learn how to develop database applications using ObjectDB and JDO (Java Data Objects), the revolutionary database programming technology by Sun Microsystems. The main purpose of ...

 
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NULL prefered in ORDER BY?

Hi! Is there a way to NOT prefer NULL in Order BY? I.e. assume this: @Entity class Hint { private String name; } @Entity class Test { private Hint hint; } I've got a few Test entries, some do have a hint assigned, some do not (NULL). Now when I do something like SELECT FROM Test ORDER BY hint.name ... value so they appear first in ordering. Please fill a feature request if you need this functionality. As as side note, I ...

 
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WORM (Write once read many) support

Hello, we would like to propose a feature in the objectdb if this is not already available. We use objectdb in our product development and deployment in high secure environments like police, military and government agencies. We have developed a specialized hardware device in a form of appliance which acts as archiving device for processing and storing logs, records and transactions. Hardware is specific in a way that it has a mechanism for preventing the data to be changed once they are written. ... Hello, we would like to propose a feature in the objectdb if this is not already available. We use objectdb in ...

 
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Using of ConcurrentHashMap as attribute

Hello, it is possible to use an entity attribute of type java.util.concurrent.ConcurrentHashMap Your web site http://www.objectdb.com/object/db/database/features 'Object Model & Data Types' has no guidelines about this data type. Best regards #1 2015-05-13 06:26 Hello, it is possible to use an entity attribute of type java.util.concurrent.ConcurrentHashMap Y ...

 
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Delete class from DB - through Explorer

Hi! I was looking for ways to delete a class (entity/embedded) from a database through Explorer, but I couldn't find any. Is there any way for doing that? If not, why? The only way I see right now is to delete the whole db and make a new one, but that's not a good scenario at all when you already have data in the current db. Thanks! ... Thanks. I think it's a nice to have feature. edit ...

 
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Can I use the objectDB in android application?

I'm interesting in the ObjectDB, and I want to know if it passiable run at the android application. ... Is there any chance to prioritize this feature. Thanks. edit ...

 
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JPA 2.0 Criteria API: (When) Fully supported ?

An excerpt from the website of a 3rd party vendor which tries to support JPA 2.0:   "The primary difference between JPA 1.0 and JPA 2.0 implementations is how data is fetched: the JPA 1.0 implementation creates a JPQL query string for fetching while the JPA 2.0 implementation uses Criteria API.   Tested JPA 2.0 providers ... java.lang.UnsupportedOperationException: Unsupported feature - JPA Criteria Builder" The latest ObjectDB JPA 2.0 ...

 
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Posting to ObjectDB Website - Important Instructions

Instructions for posting to ObjectDB website (to the forum, the issue tracking and the help desk).... be posted to the Issue Tracking system. Feature requests may be posted to the  Issue Tracking system (for ...

 
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Cascading (persist) with a mix of enhanced and not enhanced entities

We find out that it is actual not possible to use enhanced and not enhanced entities together. Exist any limitations regarding the use of enhanced and non-enhanced entities? We work based feature and want to load other bundles as an artifact from the Nexus. These are always enhanced. To enhance the entities during development is, because of our build environment, very time-consuming. Unfortunately, we can not reproduce this with a small example until now. Sometimes it works. ... enhanced and non-enhanced entities? We work based feature and want to load other bundles as an artifact from the Nexus. These are ...