By Deepak Vohra
It is a sensible, tutorial-style publication that incorporates many examples that reveal the way to boost EJB 3.0 database endurance functions with Oracle Fusion Middleware 11g. each bankruptcy begins with surroundings the surroundings for the bankruptcy and comprises an instance software illustrated with figures at milestone levels. This booklet is aimed toward EJB 3.0 program builders who are looking to find out about the sensible use of EJB 3.0 database patience with Oracle Fusion Middleware. those people who are already utilizing EJB 3.0 database patience will find out about utilizing EJB 3.0 database patience with Oracle Fusion Middleware 11g. the objective viewers is anticipated to have a few past wisdom approximately Java EE, EJBs, EJB 3.0, JSF, AJAX, net companies, and XML. This ebook is perfect for these builders who've operating wisdom of JDeveloper and WebLogic server, and need to benefit concerning the sensible use of EJB 3.0 with Oracle Fusion Middleware
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Additional info for EJB 3.0 Database Persistence with Oracle Fusion Middleware 11g
Persistence package. An entity instance is created with the new operator and persisted using the EntityManager API. find("CatalogBean", catalogId)); The @NamedQuery annotation is used to specify a named query in the Java Persistence Query language, which is an extension of EJB-QL. The Java Persistence Query language further adds operations for bulk update and delete, JOIN operations, GROUP BY, HAVING, and subqueries, and also supports dynamic queries and named parameters. Queries may also be specified in native SQL.
The @Column annotation specifies the database column corresponding to the identifier property catalogId. If a @Column annotation is not specified for a persistent entity bean property, the column name is the same as the entity bean property name. Transient entity bean properties are specified with the @Transient annotation. x entity bean instance is created with the create() method in the entity bean home/local home interface. lookup("CatalogLocalHome"); CatalogLocalHome catalogLocalHome=(CatalogLocalHome)objref; //Create an instance of Entity bean CatalogLocal catalogLocal=(CatalogLocal)catalogLocalHome.
0 entity class and façade classes. In the New Gallery window, select Categories:General | XML and Items:XSL Style Sheet and click on OK. xsl) and click on OK. 0 by default. xsl gets added to the EJB2toEJB3 project. The following illustration shows the stylesheet copied from a later listing in this chapter. 0 façade classes with. 5 API to the project in the Project Properties window. First, select Tools | Project Properties. Subsequently, add the required libraries with the Add Library button. These libraries are preconfigured in JDeveloper and only need to be selected and added.