Net web server - Starting a Hibernate project limitation on how you
Starting a Hibernate project limitation on how you can configure and deploy Hibernate; in the end, you only need to build a SessionFactory from a prepared configuration. NOTE Method chaining Method chaining is a programming style supported by many Hibernate interfaces. This style is more popular in Smalltalk than in Java and is considered by some people to be less readable and more difficult to debug than the more accepted Java style. However, it s convenient in many cases, such as for the configuration snippets you ve seen in this section. Here is how it works: Most Java developers declare setter or adder methods to be of type void, meaning they return no value; but in Smalltalk, which has no void type, setter or adder methods usually return the receiving object. We use this Smalltalk style in some code examples, but if you don t like it, you don t need to use it. If you do use this coding style, it s better to write each method invocation on a different line. Otherwise, it may be difficult to step through the code in your debugger. Now that you know how Hibernate is started and how to build a SessionFactory, what to do next? You have to create a configuration file for Hibernate. Creating an XML configuration file Let s assume you want to keep things simple, and, like most users, you decide to use a single XML configuration file for Hibernate that contains all the configuration details. We recommend that you give your new configuration file the default name hibernate.cfg.xml and place it directly in the source directory of your project, outside of any package. That way, it will end up in the root of your classpath after compilation, and Hibernate will find it automatically. Look at the file in listing 2.4. Listing 2.4 A simple Hibernate XML configuration file