By Joseph Ottinger, Srinivas Guruzu, Gary Mak
Hibernate Recipes, second version encompasses a choice of code recipes and templates for studying and construction Hibernate recommendations for you and your consumers, together with how you can paintings with the Spring Framework and the JPA. This booklet is your pragmatic day by day reference and advisor for doing all issues regarding Hibernate. there are numerous books serious about studying Hibernate, yet this ebook takes you extra and exhibits how one can observe it essentially on your day-by-day paintings. Hibernate Recipes, moment version is a must-have booklet to your library. Hibernate 4.x is still the most well-liked out-of-the-box, open resource framework answer for Java endurance and data/database accessibility thoughts and styles and it really works good with the preferred open resource firm Java framework of all, the Spring Framework. Hibernate is used for e-commerce–based net purposes in addition to heavy-duty transactional platforms for the firm.
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Extra resources for Hibernate Recipes, 2nd Edition: A Problem-Solution Approach
Html. • Java Data Objects (JDO): A standard interface–based Java model abstraction of persistence developed by the Java Community Process. 0 is Java Specification Request 243. 0, the development of the API is taking place within Apache JDO open source. • Hibernate: A very popular ORM framework. Hibernate provides Hibernate Annotations, which implement JPA standards and provide more-advanced mapping features. We will demonstrate configuring a project that uses JPA annotations and Hibernate Annotations.
It must also implement the Serializable interface. info Chapter 2 ■ Basic Mapping and Object Identity How It Works In some cases, you can use Hibernate to access a legacy database that includes tables by using a composite key (a primary key composed of multiple columns). With this kind of legacy table, it is not easy to add an ID column for use as primary key. info Chapter 2 ■ Basic Mapping and Object Identity In a mapping file, you can use
Hibernate provides many built-in strategies for ID generation: • Database sequence • Native generator • Increment generator • Hilo generator Some of these strategies are available only for specified databases; for instance, the sequence strategy is not supported in MYSQL, but it is provided by Oracle. JPA also provides a way to generate identifiers. We look at each of these strategies in turn, starting with the database sequence. We have created one class for each identifier and we insert about ten records into each of these entities.