I am u开发者_如何转开发sing JOINED inheritance strategy with EclipseLink JPA implementation. I have noticed that EclipseLink is adding discriminator column, named by default DTYPE, to the database sch
This is the same question as: How to dynamically generate SQL query based on user's selections? The only difference is, that I\'m interested in seeing solutions also using Java/JPA (+possibly Ec
I\'m just starting to take a look at java persistence (at the moment with eclipse\'s default provider of eclipselink). Basically just creating an object and attempting to persist it to the db (Oracle)
I have one jar library A (or project in eclipse), which has it\'s own persistence unit (META-INF/persistence.xml) and some entity classes, and another project (B) using this one. In project B there is
I want to use GenerationType.IDENTITY for primary keys in my production MySQL system. But for local development and testing, I\'d like to use HSQLDB. The problem is that HSQLDB doesn\'t support Genera
Can anyone po开发者_如何学Pythonint me to an example on how to use CURRENT_DATE in a JPA query?
I am attempting to get EclipseLink JPA worki开发者_C百科ng inside the Spring dm Server OSGi environment.
I\'m running eclipselink in an OSGi container and my entity classes are in their own bundle. I have repeatedly run into the problem that Eclipselink fails to autodetect the entity classes, resulting