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CRUD Database Operations with JPA

Shows how to use Java/JPA to store, retrieve, update & delete.... that em , the managing EntityManager of p , is not mentioned explicitly when p is being updated. The EntityManager ...

 
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Failed to write the value of field using reflection (error 363) on LAZY fetch

Hi There I am using ObjectDB 2.6.3. I get the following Exception when I try to read my entities with a query where I have set to use LAZY initalization. It fails when it tries to set a 1:n member (e.g. a Modell has several Artikels) . When I remove the LAZY hint on the query execution it works. Any hints why this can happen? The Mapping of class Modell and its member: ... transactions in a way that JPA managed entities will not be detached on exiting a method, please check Spring Framework ...

 
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server.exe on 32bit and 64bit Windows

Is the server.exe compatible to start the objectdb server on Windows 64bit OS?  Or 32bit only?   ... successfully on Windows 7 Pro 64. But if they still do not work - you will have to use the old server_.exe and explorer_.exe until the ...

 
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Extending model by "common entity"

Hi, I have a question about extending working model with one, common entity, that all other entities will inherit from. For example I have 2 different entities in database with some data:... - open it once in embedded mode from your application (not using the Explorer) - after rebuilding all the classes. ...

 
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Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)

I have two classes a Container type class and another class that is 'contained' by that class. The contained class, CompoundKeyMapItem, represents an alternate implementation of an object held in a Map, and uses a Compound Primary Key. The contained class therefore uses an @IdClass. This all works fine on Eclipselink. However when I try and run this in ObjectDb I get the following error; ... ( ) { //Do nothing we do not have a separate ID }   public Integer getJPAVersion ...

 
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newbie - lots of exeptions

Hi  I'm very new to objectdb . I have bought a server and really want to use it. Our code works well with eclipselink and postgresql - until we stress it which is why I'm trying to get objected to work.   realy wierd things are going on ... we are using hessian to connect our remote clients to glass fish and invoke methods there (fine with postgresql) . here is our log (part of it at least .... exceptions are happening all the time when we're working with objected). ... This new exception is not related to the exception that was reported at the beginning of this thread. ... 66 more Caused by: java.lang.IllegalArgumentException: Can not set java.lang.String field ...

 
issue

Schema-Update: Rename superclass and remove one subclass

Hello, we renamed a superclass and removed one of the subclass. If we then try to open the Database (with ObjectDB-Explorer) we get a "Failed to generate dynamic type ..."   Small Example: Generate Database ... this issue it seems that fixing the problem is not trival, so unfortunately we cannot provide an immediate fix. A ...

 
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An ArrayIndexOutOfBoundsException with nested entities and enhanced entities

We have a new issue like the issue in the forum task http://www.objectdb.com/database/forum/1075. This issue is very important for us, because we want to create a release soon. ObjectDB version: 2.6.8_06 All our entities are enhanced. There are nested entities in following hierarchy: @Entity @Access (AccessType.FIELD) public abstract class ModifierImpl extends DataTypeImpl implements Modifier { ... the database and the enhanced classes. But perhaps, not quite comprehensible, the database was produced by the ObjectDB_2.6.8_05. ...

 
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Getting com.objectdb.o.UserException:

I am using the object db version 2.x in a web application that runs on tomcat4. I am using the default configuration file. ... 09:56 Currently not, but this option should be added in future versions. ...

 
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Failed to generate dynamic type

Hi  I was trying to enhance some of my classes and I got an error :  Failed to generate dynamic type com.package.RootContainer (error 361) It seems that all dependent classes are on the classpath , so what is missing or how to recognize what is wrong with that class ?? thanks in advance b ... exception when the class is loaded during enhancement? If not, please provide a sample case that demonstrates the problem. Please ...