The key difference here is that you cannot create an EJB reference with an EJB link defined, because this is allowed only for EJB references within the same enterprise application.
JPA has a very rich query language you can use, called EJB-QL.
This way the proxy can intercept calls to the EJB and translate exceptions as appropriate.
您堅持不懈(沒有別的意思)的詢問真的讓ejb倡導者不禁懷疑自己倡導使用EJB的力度是否不夠。
Standard J2EE is partially able to satisfy this mapping, for example, by simply mapping the object to a session EJB class, and the operation to a particular secured EJB method.
業務流程接着通過橋接組件調用EJB服務，請參見下面的圖1。
The EJB group must deliver something soon, or the lightweight containers may render EJB technology irrelevant.
EJB Container provides a simple breakdown of the number of each type of EJB deployed in the application server.
The annotations define the type of EJB, container-managed fields, finder queries, data types, and all the other information typically found in the deployment descriptors of an EJB.
The file contains extra configurations that can override or supplement the annotations on EJB3 beans.
Moreover, Siwpas Enterprise Edition includes clustering and failover of stateful EJB and CDI beans with Tomcat native clustering.
把EJB項目作為從屬的JAR添加到應用程序客户機項目。
介紹Struts+EJB框架的技術組成:Struts框架和EJB組件技術。
If the target field type specifies the EJB business interface type, the caller does not need to be concerned with any of the specifics of calling an EJB.
Securing EJB methods declaratively is done according to the J2EE specification.
A session facade EJB business methods call more than one DAO to save on more than one table.
到目前為止我們已經看到了查找EJB 本機接口的方法，這些方法有的不是很好，有的稍好一些,但是都需要手動編碼，其中比較好的解決方法也需要對EJB 部署描述符進行修改,以增加EJB 引用。
即使多個EJB合作執行任務時，ejb容器管理事務也可以工作。
And they really work well: I'm using EJB 3.0 + JPA 1.0 since about 2 years in projects.
從馬後*的角度來説，EJB 2.0不是解決這些問題的正確方法。
Especially if they already think EJB is too difficult?
如果目標字段類型指定了EJB業務接口類型，則調用者不需要關心調用某個EJB的任何細節。
在IICE所提供的EJB中容納連接器對象是連接器部署最常見的場景。
A modification of the first version that accesses an EJB for its product-category information.
此外，您可以決定是否公開EJB作為本地ejb、遠程EJB或二者兼有。
使用部署描述符編輯器打開EJB部署描述符(圖2)。
這裏主要的差別就是用户不能創建定義了EJB鏈接的EJB引用，這是因為只有相同企業應用程序內的EJB引用才可以這樣。
The fact that you have resource managers that manage your connection pools does not guarantee optimum performance from the EJB layer — there are some design considerations as well!
With the perspective of hindsight, EJB 2.0 is not the correct way to solve these problems.
In the sample application described in this article, the business logic EJB is secured so that only authenticated users can invoke specific EJB methods.
國文精選館
