JPOX

Hi, My needs are to store into a database some beans, which i dont know the type. The main problem sith JDO is the need of a configuration file for every class to store. Can JPOX help me to dynamically create the required Schema into a database and store a bean which even me dont know the type ? Thanks!

Hey guys, it's me again, I'm trying to map an N:1 relationship between the following tables: Job (jobId, name, description) User (userId, firstName, lastName, age, jobId) Unfortunately, whenever I attempt to pull a User's job from a ... [More] controller, null is always returned. This has lead me to believe that I'm having a mapping problem. Here's my jdo descriptor: [code] ... [Less]

hello, I can't enhance my classes. I use command line with UNIX (MACOSX) I try to enhance the classes of jpox-samples-jdo-tutorial after 1. Compile the classes (using javac as normal) putting the compiled classes into target/classes ... [More] (Book.class, Main.class, Product.class) 2. Copy jpox.properties into target/classes (done) 3. JDO Enhance the classes on Linux/Unix : java -cp ... [Less]

Our application needs to do optimistic long transactions—basically it’s a two-tier *desktop* application where, within any single instance of the application, exactly *one* transaction is always active, in one thread, with only multiple objects from ... [More] a small set (around 10) of tightly cross-referenced classes. We need to be able to create/modify objects, persist them, and then *continue to modify ... [Less]

Hey guys, I'm currently try to run a manual JPOX JDO enhancement on Windows, because the eclipse plugin for doing so doesn't support Dynamic Web Applications. Unfortunately I'm running into a little snag... The problem is most likely caused ... [More] moreso by my inexperience with Java than my inexperience with JPOX, but maybe you guys can help me out. Here's the command I'm using, as well as the ... [Less]

Hi, i'm trying to get datanucleus running in an osgi environment (equinox) using the jpa interface. Now that everything should be clear (after hard work of dependency management) i get a ClassCastException. Maybe someone of you can help me out. ... [More] [code]java.lang.ClassCastException: org.datanucleus.jpa.PersistenceProviderImpl cannot be cast to javax.persistence.spi.PersistenceProvider ... [Less]

Hello All, I am using JPOX 1.2.2, JDO2.1, BCEL Enhancer In my application I am using Optimistic Transaction, tx.setOptimistic(true); tx.begin(); pm.makePersistent(ontology) tx.commit(); Once persisted, before traversing through the ... [More] ontology graph, I set the transaction to active/begin. Now: JDOHelper.getObjectState(ontology); //Gives ---> hollow/persistent-nontransactional ... [Less]

Hey everybody, I'm currently learning about JDO Persistence, and decided to check out the JPOX Tutorial for it (http://www.jpox.org/docs/guides/jdo/tutorial.html) while I write my own dynamic web project that uses it. I've been following the ... [More] instructions as well as I can (I'm pretty sure I have all of the required jars, my jdo.properties file is filled out, etc), but I keep getting one error ... [Less]

Hello I'm trying to run the spatial tutorial with postgres. I succeeded in storing data, but I cannot retrieve then. I'm using JPOX 1.2.2 Here's a piece of code: [code] { ... tx.begin(); System.out.println("Retriving positions ... ... [More] Found:"); Query query = pm.newQuery(Position.class, "name != 'home'"); List list = (List) query.execute(); tx.commit(); } finally ... [Less]

Hi, I got the error report from user of my app and in log the cause is the exception like below: javax.jdo.JDOUserException: Cant read fields outside of transactions. You may want to set 'NontransactionalRead=true'. FailedObject:2 at ... [More] org.jpox.state.jdo.Hollow.transitionReadField(Hollow.java:125) at org.jpox.state.StateManagerImpl.transitionReadField(StateManagerImpl.java:3394) at ... [Less]