By Dave Minter
starting Hibernate is perfect if youre skilled in Java with databases (the conventional, or "connected," approach), yet are new to open resource light-weight Hibernatethe hottest de facto object-relational mapping and database-oriented program improvement framework. This e-book packs in fresh information regarding the most recent unlock of the Hibernate 3.2.x endurance layer and gives a transparent creation to the present typical for object-relational patience in Java.
Experienced writer Dave Minter and contributor Jeff Linwood supply extra in-depth examples than the other books for Hibernate newbies. The authors additionally current fabric in a full of life, example-based mannernot in a dry, theoretical, hard-to-read style. and because the booklet retains its specialize in Hibernate with no losing time on nonessential third-party instruments, youll be ready to instantly commence construction transaction-based engines and applications.
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Additional info for Beginning Hibernate. From Novice to Professional
Properties file in the classpath. A suitable example is provided with the Hibernate tools in the etc directory of the unpacked archive. Our example includes this file in the src directory of our project and places that directory itself on the classpath. In some circumstances—such as when building a JAR file for inclusion in other projects—it may be better to copy the appropriate properties file(s) into the target directory with the class files. qxd 8/2/06 9:36 PM Page 33 CHAPTER 3 ■ BUILDING A SIMPLE APPLICATION Creating a Hibernate Configuration File There are several ways that Hibernate can be given all of the information that it needs to connect to the database and determine its mappings.
TransactionManagerLookup interface. use_identifier_rollback Determines whether Hibernate uses identifier rollback. use_sql_comments Generates SQL with comments. wrap_result_sets Turns on JDBC result set wrapping with column names. output_stylesheet Specifies an XSLT stylesheet for Hibernate’s XML data binder. jar. UserTransaction The JNDI name for the UserTransaction object. XML Configuration As we have already mentioned, Hibernate offers XML configuration capabilities. xml, and place it in the root of your application’s classpath.
Max_size The maximum size of the connection pool for C3PO. max_statements The upper limit for the SQL statement cache for C3PO. min_size The minimum size of the connection pool for C3PO. timeout The timeout for C3PO (in seconds). hibernate. CacheProvider interface. hibernate. QueryCacheFactory interface for getting QueryCache objects. region_prefix The prefix to use for the name of the cache. use_minimal_puts Configures the cache to favor minimal puts over minimal gets. use_query_cache Specifies whether to use the query cache.
Beginning Hibernate. From Novice to Professional by Dave Minter