Java Persistence with Hibernate 2nd phần 4 potx
Java Persistence with Hibernate 2nd phần 4 potx
... types 245 ■ Write the collection property with the java. util.Collection interface, and, on declaration, initialize it with an ArrayList of the JDK. Map the collection in Hibernate with a ... right one). Without extending Hibernate, you can choose from the following collections: ■ A java. util.Set is mapped with a <set> element. Initialize the collection with a...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 5 potx
... to a new Session (with update() or saveOrUpdate() ), Hibernate may execute unnecessary SQL UPDATE statements to ensure that the database state is synchro- nized with the persistence context ... Integrating legacy databases 349 you need to enable this option. Again, refer to our earlier discussion of generated properties in section 4. 4.1. Let’s look at the second issue you...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 1 pptx
... 3 94 Extending a persistence context 40 0 9.3 The Hibernate interfaces 40 1 Storing and loading objects 40 2 ■ Working with detached objects 40 8 ■ Managing the persistence context 41 4 9 .4 The Java ... the persistence layer 736 Considering performance benchmarks 744 16.6 Summary 746 17 Introducing JBoss Seam 747 17.1 The Java EE 5.0 programming model 748 Consideri...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 2 doc
... libraries> +src +hello HelloWorld .java Message .java Message.hbm.xml +persistence HibernateUtil .java hibernate. cfg.xml (or hibernate. properties) log4j.properties The first file, build.xml, ... rewrite the main application code with JPA. “Hello World” with JPA These are your primary programming interfaces in Java Persistence: ■ javax .persistence. Persistence —A star...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 3 pot
... Also, the Java Persistence interfaces don’t support full polymorphic queries; only mapped entities ( @Entity ) can be officially part of a Java Persistence query (note that the Hibernate query ... discussed in chapter 3, section 3.3 .4, “Handling global metadata.” You can set a naming strategy implementation in Java Persistence in your per- sistence.xml file with the hibe...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 6 pps
... level (the database) and how you work with transactions in an application that is based on native Hibernate, on Java Persistence, and with or without Enterprise JavaBeans. Transactions allow you ... annotated with @Tran- sient or the transient Java keyword). In this code example, the next synchroni- zation with the database occurs when the resource-local transaction is comm...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 7 ppt
... with thread or JTA transaction binding in Java SE and Java EE. Persistence contexts are either scoped to the transaction, or managed by the application. Java Persistence standardizes a persistence ... manipulate the Hibernate default behavior when objects are loaded and stored. Table 11.2 Hibernate and JPA comparison chart for chapter 11 Hibernate Core Java Persiste...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 8 pptx
... the expressiveness and flexibility that you’re used to. This isn’t the case with Hibernate and Java Persistence. Hibernate s powerful query facilities allow you to express almost everything you ... navigating associations to new Criteria s. With the Java Persistence API, your starting point for queries is the EntityMan- ager . To create a javax .persistence. Query insta...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 9 pps
... are the same. Java Persistence standardizes JPA QL and also allows the fallback to native SQL. 15.2.3 Native SQL in Java Persistence Java Persistence supports native SQL queries with the createNativeQuery() method ... The persistence layer facade we introduced here doesn’t expose any Hiber- nate or Java Persistence interface to the client, so theoretically you can im...
Ngày tải lên: 12/08/2014, 19:21
Java Persistence with Hibernate 2nd phần 10 pps
... database-integrity rule in a single Java annotation and use Hibernate Validator to check instances of an annotated class at runtime. ■ Seam With Seam, you can integrate Hibernate Validator with the presentation ... method, with literal arguments. Figure 17.11 Seam decorates the input fields with validation error messages. The Java EE 5.0 programming model 759 You can call the s...
Ngày tải lên: 12/08/2014, 19:21