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Replicated cluster recovery

If I create a replicated database cluster as per http://www.objectdb.com/java/jpa/tool/replication what is the behaviour of the master database after a failure? For example, say I have MasterDB and SlaveDB in the cluster. If MasterDB goes offline the application will automatically switch to SlaveDB. When MasterDB comes back online it will have missed any activity that occured during the downtime. ... reading data but all hangs up on geting PersistenceManager from the PMF, without cluter it works fine. I had similar situation in JPA API ...

 
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@ElementCollection of type enum

Hi! I have in an entity called User with the following field: @ElementCollection(fetch = FetchType.EAGER) private Set<UserPermission> permissions; package x.x.x.x public enum UserPermission { BASIC, COACH, ADMIN } Use case: there are users which contain the first 2 permissions (BASIC and COACH, so the first 2 entries). ... = em. createQuery ( "SELECT e FROM MyEntity e" , MyEntity. class ) ; ...

 
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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).... Query query = em. createQuery ( "SELECT e FROM MyEntity e" ) ; List resultList = query. ...

 
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Upgrade to 2.4.1_03

Right, that fix to 2.4.1_02 got us past the previous issue. Now I'm not sure whether this next issue is our annotations, or another issue with objectdb. I have added some more classes to the unit test. They are used by AbstractContactDetail. On line 372 of the attached test, AbstractContactDetail extends AttributeHolder. If I remove the extends, the test passes. If I add it, it fails. I'm not even adding anything to AttributeHolder as part of this test. The exception I get with the extends is: ... This and the previous problem result from the way that ObjectDB builds a new entity object for merge, which includes ...

 
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OptimisticLockException

Ran into this error for the first time (after many years of using odb): Caused by: com.objectdb.o._OptimisticLockException: Optimistic lock failed for object model.UserSession#28 (object has version 2 instead of 3) Also the first time I'm using odb in C/S mode rather than embedded. Also have the Explorer open Questions: a) what is it about? ... I guess I should read doco more. I ran into the same error from a pessimistically locked entity (global tracking id generator, specific to ...

 
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zip file or JAR manifest missing

I found the message: Error opening zip file or JAR manifest missing: /E:/projects/ObjectDB/bin/objectdb.jar Some of projects can read the DB, but others can not read or write the DB. ... a new record. String sQ2 = "select i from ItemList i where i.taskid=?1 and i.itemname = ?2" ; Query ...

 
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Embedding ObjectDB on server application

I'm trying to integrate ObjectDB as part of a server software I am developing. I'm a little lost at the connection file path for the persistent factory. So if I want to pass in the database file path, with relative path, where exactly is it relative to? So I did a test and just wrote: EntityManagerFactory emf = Persistence.createEntityManagerFactory("test.odb"); But I got: Exception: javax.persistence.PersistenceException Message: No Persistence provider for EntityManager named test.odb ... is precisely the issue! Since I have to export the project from eclipse, the server middleware is responsible to load the jars ...

 
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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 ... Testclass uses its own equal and hash methods (generated from Eclipse) PPS.: I recognized another problem (in 2.6.4_09) with the ...

 
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Double persist of Entity field with Cascade.ALL

I am building a JavaEE application using Netbeans 7.0.1, Glassfish 3.1 and ObjectDB 2.3.3. I have a Book class with entity field Chapter which has a CascadeType.ALL property. The Book fields are as follows: @Id @GeneratedValue(strategy = GenerationType.AUTO) private Long id; private String bookTitle; @OneToMany(cascade= CascadeType.ALL, fetch= FetchType.EAGER) private List<Chapter> chapters; The Chapter fields are as follows: ... In Netbeans, I added the Java EE 6 API Library from Netbeans to Book_dberror_Libs and Objectdb.jar to ...

 
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javax.persistence.PersistenceException: No Persistence provider for EntityManager named in Karaf 4.0.7 and OSGi DS test

Hello, I've written a small OSGi Declarative Services application to run in Apache Karaf 4.0.7 to persist an entity into an ObjectDB database. I'm working in C/S model and I have both the ObjectDB server and Karaf running on localhost. When I try to persist the entity I'm getting the  javax.persistence.PersistenceException: No Persistence provider for EntityManager named objectdb://localhost:6136/technolink.odb;user=admin;password=admin exception in the Karaf log. ... Factory and not having to worry about where it is coming from. Regards, Alex ...