| [gemini-dev] JPA + EclipseLink in OSGi environment |
| Hi folks, I've been recommended to post my problem in this forum, I hope this is the right place. I try to run JPA + EclipseLink in an OSGi environment with a specific architecture: *.domain.customer // business objects *.domain.account *.service.customer *.service.account *.service.customer.dao - orm.xml - persistence.xml *.service.account.dao - orm.xml - persistence.xml *.service.dao_jpa // OSGi service providing the DB credentials in a single place - IDatabaseCredentialsService I try to avoid redundant database credentials within the two persistence.xml files using the EntityManagerFactoryBuilder which retrieves db-credentials from my own IDatabaseCredentialsService. But this solution seems to produce a lot of code and one has to be aware of race conditions. private void createEntityManagerFactory() { assert emfBuilder != null : "emfBuilder != null"; assert dbCredentials != null : "dbCredentials != null"; Map<String, String> dbCredentioals = dbCredentials.getDBCredentioals(); entityManagerFactory = emfBuilder .createEntityManagerFactory(dbCredentioals); createCustomer(); } public void bindDBConnectionService(IDatabaseCredentialsService dbService) { dbCredentials = dbService; if (emfBuilder != null) { createEntityManagerFactory(); } } public void bindEMFBuilder(EntityManagerFactoryBuilder builder) { emfBuilder = builder; if (dbCredentials != null) { createEntityManagerFactory(); } } I hope you can help me and point me to a better and simpler solution. Eugen |