I get: diagnostic error: javax.annotation.processing.FilerException: Attempt to recreate a file for type
I\'m using 开发者_如何学GoJPQL to retrieve data. I can get data using the statement List persons = null;
I am trying to construct queries dynamically, and my next target is add JOIN clauses (I don\'t know how can I use the API).
Is the criteria api of eclipselink jpa2 supported for java se 6 projects? If not, that\'s my problem.
I have two databases in MSSQL ,and i wa开发者_开发技巧nt to connect to them using JPA2 I have managed to get it working with one . Can some one help me how do i do that?
I ha开发者_开发知识库ve a standalone Java application that uses EclipseLink 2.0.1. It is configured by a persistence.xml, and then does something like:
As also described here, I\'m trying to determine the best way to initialize and update my application\'s database. I use EclipseLink-JPA2. I distribute a NetBeans platform application.
Once I deploy my application with JPA the user chooses to install it somewhere. Then however the property set as:
I would like to better understand the differences between (1) a traditional Multivalued Relationship/Association
In Pro JPA 2 (Apress) book, I have seen examples like, EntityManager em; Long count = em.createNamedQuery(countQueryName, Lon开发者_运维问答g.class).getSingleResult();
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