Is it possible to map the same class to both ORM and ODM using annotations? We are deciding what to use so we want to do some performance measurment and we also want to be able to switch the persist
I am using e开发者_开发知识库jp, it\'s a simple orm framework. If 1000+ objects were loaded with ejp, but a few of them are modified, how to save change? Should I find the the modified onesmyself ?
In my project we are using petapoco as our ORM for data access. But i face some difficulties while deleting datas which have one to many relations. I have two tables named user and group. Here one use
Recently I\'ve been working on some Perl projects and I\'m a very novice Perl programmer.I\'ve been experimenting with DBIx::Class and so far I\'m really please with the flexibility and the ease of us
I wanted to know how SchemaManag开发者_如何学Pythoner of toplink works. I have a DataBaseSession and I create schemamanger from it. I also have some mappings in toplink. So my question is:
I know JPQL is a subset of HQL. Are there any practical usecases (please give examples) that really need HQL specific features to be used (that means it is impossible or considerably difficult with
Doctrine2 allows you to query using magic finders based on field names. If you have an entity named User you should able to call $repo->findOneByUsernameAndPassword() assuming that the entity has u
i\'m fairly new to Java and Hibernate. At work we are developing a medium sized, formprocessing J2EE web application using Spring, Hibernate, JBOSS and so on. What is 开发者_开发知识库the correct appr
I have a class: class Chart(Base): __tablename__ = \'chart\' id = C(\'chart_id\', Integer, primary_key=True)
I have a many-to-on开发者_如何学Goe mapping on bookings. A booking must belong to a room. And a room can have several bookings.
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