Java Persistence API JPA through JDK 5.0 annotations or XML description of the object - the relationship between the mapping table and run-time persistence of the entity object to the database. Sun in ...
entity object (RSS)
In this paper, to cut-off since I CSDN blog http://blog.csdn.net/ctojxzsycztao/archive/2009/05/12/4171730.aspx Today, because of闲来无事studied about JPA, and gave a simple example to small for you to sha ...
Hibernate transparent persistence is very comfortable to use, and sometimes even forget the existence of the database. My friends would always tell save, saveOrUpdate, update the distinction, lock, me ...
EJB is a server-side sun component model, the usefulness of the largest deployment of distributed applications are similar to Microsoft's. Net technology. With the advantages of cross-platform jav ...
First of all, tell us about the crawl strategies: Crawling strategy (fetching strategy) means: When the required application at (Hibernate Entity Object graph) relationship between the time of navigat ...
Hibernate data retention - Session. Save Ways Session.save user entity objects to the database persistence operations. In other words, Session.save method call with the entity object by matching Inser ...
hibernate as a now relatively popular lightweight ORM framework, started in 2003 in the domestic epidemic, and to do at the moment still on Persistence Layer dominant. Although rich and flexible objec ...
Medium at HQL keywords are not case-sensitive, but the property and the class name is case-sensitive 1, a simple query property * A single property query, return the result set list property, element ...
hibernate query cache Query cache is cached result set of common property On the entity object cache only the result set id Query cache life cycle, when the associated table happened to amend, then th ...
Hibernate working principle and why to use? Principle: 1. To read and parse configuration file 2. Read and analytic mapping information, create a SessionFactory 3. Open Sesssion 4. Create Affairs tran ...
Lazy loading: Lazy loading mechanism is in order to avoid unnecessary performance overhead and put forward the so-called lazy loading is required when the real data at a time when the real implementat ...
Hibernate cache level: (1) a cache is very short and the session life cycle consistent, also known as session-level cache-level cache or transaction-level cache (2) Ways of Supporting level cache: get ...