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:
am using the Session.refreshObject(Object o) method to fresh an object that has a getList() method. This开发者_Go百科 list is provided by toplink using a one to many mapping. When I refresh the object
So what I\'m doing is creating a subquery that gets a list of ID values, then the main query gets all the necessary values and adds ordering.
For optimization purpose, I want to fetch first N results in a subquery (I\'m getting first N ID values) and in the main query fetch full rows for the ID values in the subquery and order them. What I
We\'re using JPA, and when a collection of objects returns from a query, a separate query is executed for each \"child\" object related through a foreign key.
I have a sequence object in my oracle db: create sequence BASE_SEQ minvalue 1 maxvalue 9999999999999999999999999999
Is there any way if executing batch updates (EntityManager persist() or merge()开发者_JAVA百科) using JPA Toplink?If you want to do a batch update, you can create a Query (either JPQL or Native SQL) t
i have this code public void guardarAspirante(AspiranteDTO aspiranteDTO) { Aspirante aspirante = new Aspirante();
I have an application which is using weblogic server 10.3 and ejb 3.0 and also Toplink for ORM. Currently the transactions are using UnitOfWork.commit() for committing a particular action stated in th
Hi I\'m new to JPA and I\'m having trouble understanding how it handles inheritance. I have a specific problem I need solved without changing the DB scheme, but if you can\'t find a solution I would
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