rdlc code 39

rdlc code 39

rdlc code 39

rdlc code 39

rdlc code 39

rdlc code 39,

rdlc code 39,
rdlc code 39,

rdlc code 39,

rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,

rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,

rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,
rdlc code 39,

We ve seen EJB 3 DI in its primary incarnations already the @javax.ejb.EJB and @javax.annotation.Resource annotations. EJB 3 DI comes in two more forms the @javax.persistence.PersistenceContext and @javax.persistence.PersistenceUnit annotations. We ll see these two annotations in action in part 3 of this book. We ve also witnessed only a small part of the power of the @Resource annotation. So far, we ve used the @Resource annotation to inject JDBC data sources, JMS connection factories, and JMS destinations. Unlike some lightweight containers such as Spring, EJB 3 does not permit injection of POJOs that aren t beans. However, the @Resource annotation allows for a variety of other uses, some of which we cover in the coming section. In this section we ll show you how to use the @Resource annotation and its parameters. You ll learn the difference between setter and field injection, and you ll see the @Resource annotation in action when we inject a variety of resources such as e-mail, environment entries, and the timer service. Finally, you ll learn how to look up resources using JNDI and the lookup method in EJBContext.

The @Resource annotation is by far the most versatile mechanism for DI in EJB 3. As we noted, in most cases the annotation is used to inject JDBC data sources, JMS resources, and EJB contexts. However, the annotation can also be used for e-mail server resources, environment entries, ORB reference, or even EJB references. Let s take a brief look at each of these cases. For convenience, we ll use the familiar JDBC data source example to explain the basic features of the @Resource annotation before moving on to the more involved cases. The following code injects a data source into the PlaceBid bean from chapter 2:

While spanning a JSP session with a single transaction is possible, it may not be the best solution. After examining this code, be sure to read the Discussion section for more information regarding the drawbacks of this approach.

aspect components, 62 aspect configuration, 75 78 aspect creation, 61 66 aspect instantiation, 86 aspect ordering, 86 87 configuring, 75 77 creating aspect, 62 creating aspect configuration file, 65 creating aspect descriptor file, 66 distribution aspects, 83 JAC aspects library, 81 85 persistence aspects, 83 timing of aspect weaving, 61 transaction aspects, 83 user interface aspects, 81 83 AspectJ compared, 61 background/history, 23 compiling JAC application, 66 67 configuring JAC applications, 78 creating JAC application, 61 67 exception handlers, 80 GNU regexp, using with JAC, 69 GUI aspects, 82 implementing contracts with AOP 174 , introduction feature, 78 81 JAC operators, 69 joinpoint introspection, 73 keywords, 88 licensing, 61 method type operators, 70 object naming, 87 output from JAC application, 67 pointcuts, 62, 68 72 associating wrapper with, 71 operators, 69 pointcut expressions, 68 regular expressions, 69 programming in UMLAF, 85 86 research team, 61 role methods, 79 run options, 88 running JAC application, 67 run-time type identification (RTTI), 87 summary, 88 wrappers, 71, 72 75 constructors, 73 methods, 72 wrapper chains, 74 JAC aspects library, 81 85 AuthenticationAC aspect, 83 BroadcastingAC aspect, 84 CacheAC aspect, 84 ConfirmationAC aspect, 83 ConsistencyAC aspect, 84 DeploymentAC aspect, 84

@Stateless public class PlaceBidBean implements PlaceBid { ... @Resource(name="jdbc/actionBazaarDB") private javax.sql.DataSource dataSource;

In this case, the container would not have to work very hard to figure out what resource to inject because the name parameter is explicitly specified. As we know, this parameter specifies the JNDI name of the resource to be injected, which in our case is specified as jdbc/actionBazaarDB. Although we didn t mention this little detail before, the value specified by the name parameter is actually interpreted further by the container similar to a value specified in the res-ref-name in the <resource-ref> tag in the deployment descriptor, as in the following example:

To span a JSP session with a single transaction, create the transaction and store it in the Session object. Retrieve it from successive pages and commit or roll back when needed:

<resource-ref> <res-ref-name>jdbc/actionBazaarDB</res-ref-name> <res-type>javax.sql.DataSource</res-type> </resource-ref>