persistence

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What options are available for local state persistence in .Net

I\'m 开发者_C百科looking for good options for persisting local state of an application (created in .Net / C#.)[详细]

2023-04-04 18:46 分类：问答
problem in persisting the object in oneToMany and manyToOne relationship in hibernate

I have one doubt which is related to hibernate ... if I have following scenerio @Entity @Table(name=\"CONTINENT\")[详细]

2023-04-04 06:30 分类：问答
Batch updates in JPA (Toplink)

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[详细]

2023-04-04 00:35 分类：问答
How do I avoid 'Could not determine Hibernate dialect for database name [H2]!'?

I am getting this error when running grails run-app: Error executing bootstraps: Error creating bean with name[详细]

2023-04-03 19:29 分类：问答
Mapping Hibernate to MySQL (BEGINNER)

Is there a way to map an Entity class (Address.java) to MySQL without using Hibernate Mapping (.hbm files)[详细]

2023-04-03 17:53 分类：问答
Force transitive persistence order in JPA 2 w/Hibernate?

Is there any way to force the persistence order of objects in JPA 2 w/Hibernate? Say I have three classes: Parent, Child, and Desk.Parent owns collections of Child and Desk via @OneToMany; a Child ca[详细]

2023-04-03 12:52 分类：问答
Do I need to make a type a POD to persist it with a memory-mapped file?

Pointers cannot be persisted directly to file, because they point to absolute addresses. To address this issue I wrote a relative_ptr template that holds an offset instead of an absolute address.[详细]

2023-04-02 03:33 分类：问答
How to tell JPA to use a field of a simple class as the persistence value?

Consider this class: @Entity class Bar { @Id private long id; private FooId fooId; /* ... */ } Where Foo is basically just:[详细]

2023-04-01 16:44 分类：问答
Why do we have to manually flush() the EntityManager in a extended PersistenceContext?

In our J2EE application, we use a EJB-3 stateful bean to allow the front code to create, modify and save persistent entities (managed through JPA-2).[详细]

2023-04-01 16:26 分类：问答
Persisting new Entity to existing Database JPA

I\'ve created a database connection and some entities, now I\'m trying to test the functionality of my database. I have a User entity class, which has a unique username along with some other informati[详细]

2023-04-01 12:27 分类：问答