Titlebook: Beginning Hibernate; Jeff Linwood,Dave Minter Book 2010Latest edition Jeff Linwood and Dave Minter 2010 Annotation.Hibernate.Inform.Java.S

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Secrets and Lies: Ethical Communication,Hibernate provides three different ways to retrieve data. We have already discussed HQL and the use of native SQL queries—now we add criteria.

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An Introduction to Hibernate 3.5,Most significant development projects involve a relational database. The mainstay of most commercial applications is the large-scale storage of ordered information, such as catalogs, customer lists, contract details, published text, and architectural designs.

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The Persistence Life Cycle,In this chapter, we discuss the life cycle of persistent objects in Hibernate. These persistent objects are POJOs without any special marker interfaces or inheritance related to Hibernate. Part of Hibernate’s popularity comes from its ability to work with a normal object model.

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An Overview of Mapping,The purpose of Hibernate is to allow you to treat your database as if it stores Java objects. However, databases in practice do not store objects—they store data in tables and columns. Unfortunately, there is no simple way to correlate the data stored in a database with the data represented by Java objects.

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Mapping with Annotations,In Chapter 5, we discussed the need to create mappings between the database model and the object model. Mappings can be created as separate XML files, or as annotations inline with the source code for your POJOs. In this chapter, we discuss the use of annotations, and in the next chapter, we will discuss the use of XML files.

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Creating Mappings with Hibernate XML Files,In addition to annotations, Hibernate supports the use of XML mapping files to describe the relationship between the object model and the database. A mapping file can map a single class or multiple classes to the database. The mapping can also describe standard queries (in HQL and SQL) and filters.

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