About embedded


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

I have encountered this error from one of the many servers hosting my application. Other servers didn't encounter errors of this kind and running without problems. My system provider said that nearly all of the servers are VM-based including this one which encountered this error. It is the 'youngest' server in deployment. I can get more information as you require. As the application developer, I am perplexed as I have use JPA and ObjectDB for years now. I could use your assistance in overcoming this problem. Thank you. ----- ... have changed the JAR file to [2.5.3_03], and switch from embedded mode to server mode. The error still persists (see attachment). ...


LifeCycle Event with Embeddable classes

Hello, is there a way that lifecycle events like prepersist or preupdate are also fired for embeddable classes, not just for entities? My case looks as follows: ... callback for the containing entity and use it to handle embedded objects in the entity object. ObjectDB ...


General Settings and Logging

Describes general configuration and logging of the ObjectDB Java object database for JPA and JDO. the ObjectDB General configuration section.... side, when using client-server mode, and has no effect in embedded mode. Specifying an inactivity timeout may solve firewall ...



Instances of the type EntityType represent entity types.(Interface of JPA)


Should I use ObjectDB and JDO?

My application is not meeting required performance because JavaDB appears to be my bottleneck.  I require a faster DB.  Surveying the Internet lead me to believe that ObjectDB might be just what I am looking for (to achieve MUCH faster database access).  But, I have a few concerns.   ... because it will all be encapsulated in the self contained embedded JAR file in my application. I new to JDO, object databases, ...


em.flush(); em.clear(); loosing data and not persisting managed objects

I'm having trouble with flush() and clear() in a loop inside a transaction not persisting modified objects to database. Sometimes it does other times it doesn't. Here is my Entity. ... I doubt that ID class would give you better results than embedded IDs since they are very similar. Actually it is very strange ...


Problem witch CriteriaBuilder isMember(..)

Dear Objectdb-Team I have some Problems running a criteria query against a set. But maybe I misunderstood some essentials I have defined an entity class and an embeddable class like this ... build 2.6.4_08 which fixes an issue of using MEMBER with embedded objects. ObjectDB Support ObjectDB - ...



Instances of the type IdentifiableType represent entity or mapped superclass types.(Interface of JPA)


How to install ObjectDB on my Amazon EC2?

Hi I just created an Amazon EC2 account and I want to build project based on Java/JPA and OpenDB. I searched the web but didn't find any proper tutorials. I appreciate if you help me with a guide. Thanks.  ... EC2 instance. But you can also use ObjectDB in embedded mode, and in that case you only have to run a Java Web Server / Web ...


Issue with DISTINCT Select

It is getting more and more frustrating :( We've introduced distinct select instead of regular selection in our code (no changes else) and suddenly receive invalid identifiers in queries exceptions in various queries. Here's the stacktrace: ... I mean, it is not a collection though, it is just an embedded object which should regularily returned with $1 no? If not, what is ... to work fine.. (i.e. sorting by the property of an embedded entity within a map etc.) Hrm not sure whether this is a bug ...