Read e-book online Hibernate: A Developer's Notebook PDF

By James Elliott

ISBN-10: 0596006969

ISBN-13: 9780596006969

This ebook appeared relatively promising: a pleasant, fast consultant to get you begun ASAP on Hibernate. even if, while i began to aim to obtain Hibernate, I grew to become acutely aware that the booklet is predicated on Hibernate 2, whereas the present model is 3.3. even if i assumed model 3.3 will be backwards appropriate, it used to be no longer. because i did not are looking to examine a expertise four years outdated, i attempted to conform the examples to model 3.3. in spite of everything, i ended the booklet in basic terms to concentrate on the legacy of Hibernate 2. ultimately, the e-book regularly assumes that you're construction a unconditionally new database, which, within the firm setting, isn't the case. assurance of legacy databases is mild or null. you'll want to have a look to the ebook "Java endurance with Hibernate", that is essentially the most accomplished books i have noticeable approximately facing legacy databases.

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Additional info for Hibernate: A Developer's Notebook

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Connection. dialect=net. hibernate. jdbcDriver at URL: jdbc:hsqldb:data/music [java] 00:07:52,135 INFO DriverManagerConnectionProvider:72 - connection properties: {user=sa, password=} [java] 00:07:52,171 INFO TransactionManagerLookupFactory:33 - No TransactionManagerLookup configured (in JTA environment, use of process level read-write cache is not recommended) [java] 00:07:53,497 INFO SettingsFactory:89 - Use scrollable result sets: true . com to register it. 2 What just happened? Our test class fired up Hibernate, loaded the mapping information for the Track class, opened a persistence session to the associated HSQLDB database, and used that to create some instances and persist them in the TRACK table.

2 Generating Some Class Our mapping contains information about both the database and the Java class between which it maps. We can use it to help us create both. Let's look at the class first. 1 How do I do that? The Hibernate Extensions you installed in Chapter 1 included a tool that can write Java source matching the specifications in a mapping document, and an Ant task that makes it easy to invoke from within an Ant build file. xml to add the portions shown in bold in Example 2-2. Example 2-2.

If you've followed this example and set up a MySQL database, and you'd prefer to continue working with it throughout the rest of the book, feel free to do so, but bear in mind you'll need to know how to look at the results of the examples yourself. The text will assume you're still working with HSQLDB, and it will show you how to check your progress in that context. You will also see slight differences in the schema, as databases all have slightly different column types and features. Apart from these minor details, it really makes no difference what database you're using—that's part of the appeal of an O/R mapping layer like Hibernate.

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Hibernate: A Developer's Notebook by James Elliott


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