By Joseph Ottinger , Jeff Linwood, Dave Minter
Get all started with the Hibernate five endurance layer and achieve a transparent advent to the present normal for object-relational patience in Java. This up to date variation comprises the recent Hibernate 5.0 framework in addition to insurance of NoSQL, MongoDB, and different similar applied sciences, starting from purposes to special info. Beginning Hibernate is perfect if you’re skilled in Java with databases (the conventional, or attached, approach), yet new to open-source, light-weight Hibernate.
The ebook retains its specialise in Hibernate with no losing time on nonessential third-party instruments, so you’ll be ready to instantly begin development transaction-based engines and functions. skilled authors Joseph Ottinger with Dave Minter and Jeff Linwood offer extra in-depth examples than the other e-book for Hibernate newbies. They current their fabric in a full of life, example-based manner—not a dry, theoretical, hard-to-read fashion.
What you are going to Learn
Who This ebook Is For
Experienced Java builders attracted to studying how you can use and practice object-relational endurance in Java and who're new to the Hibernate patience framework.
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Extra resources for Beginning Hibernate: For Hibernate 5
After we populate the data with known values, we’re building a query to locate the specific Ranking we want to change (a Ranking on Java for “J. C. Smell,” written by “Gene Showrama”). We check to make sure we have a valid Ranking – which we should, as that data was created by our populateRankingData() method – and then we do something very curious. setRanking(9); … and that’s it. We commit the current transaction and let the session close because we’re done with it. 4 The transaction commits the update to the database so that other sessions- – as contained in the findRanking() method – can see it.
In production, you would use an external connection pool by using either a database connection provided by JNDI (the Java Naming and Directory Interface) or an external connection pool configured via parameters and classpath. com/projects/c3p0/) is an example of an external connection pool. To use it, we would make two changes. xml. Observe that the version of the hibernate-c3p0 dependency should match the Hibernate version. Listing 2-5 illustrates this connection. Listing 2-5. 2 Next, we need to change the Hibernate configuration to tell it to use c3p0.
Listing 2-2. 0 7 Java 7 was end-of-lifed in April of 2015. It’s time to move on if you’re able to do so. xml for details. java. hibernate). Since everything else is the same, we won't list it here. xml. java, but let's take a look at the entire Listing 2-3 so you understand everything in it. Listing 2-3. buildSessionFactory(); } 8 There are other classes in the tree, but we no longer care about JDBC in this chapter; they're here because you were promised that chapter02's tree was the same as chapter01's.