About delete

forum_thread

Reading 1.x odb files in ObjectDB 2.x without upgrading

Hi, We have a problem in the backward compatibilty in our software as once we have migrated object db odb file from version 1.x to 2.x, user is unable to open the odb files in the application which is having object db 1.x installed. Is there any way to read odb files from 1.x in object db 2.x without upgrading it ? Or user can see the content in read only mode without upgrading it ? Thanks ... edit delete binitbhaskar ... edit delete support ...

 
forum_thread

"Attempt to lock a non entity object" error

Probably a simple answer for someone who's been using ObjectDB for awhile: I'm reading objects from the database outside a transaction (inside doesn't seem to matter). First cycle of doEdit and then doCancelEdit works fine. Second time I doEdit produces the error "Attempt to lock a non entity object" session.rollback() is somehow causing the problem (found through debugging) Is this enough information for someone to suggest what might be happening and how to fix it? ... edit delete AlphaOne ... edit delete AlphaOne ...

 
forum_thread

Can I Disable the Creation of the "log" Directory?

These are questions asked in the context of the proposed architecture described in the forum thread titled, "Sample JDO Architecture for Follow Up Questions".   ... edit delete BoydEdmondson ... edit delete support ...

 
forum_thread

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 ... edit delete bolo ... edit delete bolo ...

 
forum_thread

Performance and memory usage of queries

Hello, we can't understand why the performance of queries is not the best and the execution requires so much memory. In the implementation of our UnitTests we have used "DELETE FROM Object" to delete the database. That did not work because we often get an "out of memory" exception. What's all done in the execution of queries? Why is so much memory is required, although from the application point of view, no object is loaded. ... In the implementation of our UnitTests we have used "DELETE FROM Object" to delete the database. That did not work because we often get an "out of memory" ...

 
issue

InternalException

I'm getting a new InternalException (see below). No repeatable example as yet but will work on that and let you know as soon as we have one. If there's anything in the exception which could help us narrow down the problem please let me know. ... edit delete felixobjectdb ... edit delete support ...

 
forum_thread

mappedBy problem

If I put the mappedBy element to the @OneToMany, the owned side (the many side) will never persist ! for example @Entity public class Employee { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) public Long id; public String name; @OneToMany(targetEntity=Address.class,mappedBy="employee") public List<Address> addresses; }   @Entity... edit delete eml eml ... edit delete support ...

 
manual

[ODB1] Chapter 6 - Persistent Objects

Shows how to store, retrieve, update and delete database objects. ... 6.5  Deleting Persistent Objects In order to delete an object from the database, it must first be retrieved (no matter which ... they have to be deleted explicitly. An elegant way to delete non embedded dependent objects is to implement the InstanceCallback ...

 
forum_thread

problem with lazy loading - unittest project attached

hi, i'm still testing objectdb together with spring-data-jpa. i made a test which should simulate 4 requests 1. save entity 2. read an existing entity, add onetomany relation 3. read an existing entity, add another onetomany relation 4. read entity, get relations. i have the feeling this is not the optional way to test this, because of the differnt transaction behavior. the test is not transactional, but the spring repository methods are. ... edit delete chris ... edit delete support ...

 
forum_thread

JPQL IN Operator

How can I use the standard JPQL IN operator with ObjectDB? This JPQL query works fine with EclipseLink / postgres but throws an exception in objectDB: select distinct dv.creationtime from DataValue dv where dv.capabilityId.capabilityId ==> in <== :capabilities and dv.creationtime >= :earliest and dv.creationtime <= :latest order by dv.creationtime ASC [ObjectDB 2.2.9] javax.persistence.PersistenceException Unexpected query token 'in' (error 752) ... edit delete freddieFishCake ... edit delete support ...