EJB 2.1 项目中应用程序范围的资源引用

发布于 2024-09-01 23:57:51 字数 1003 浏览 2 评论 0原文

是否可以定义适用于应用程序中所有 EJB 的资源引用？

目前我有一个看起来像这样的 ejb-jar.xml：

<ejb-jar>
  <enterprise-beans>
    <session id="foo">
      <!-- snip -->
      <resource-ref>
        <res-ref-name>jdbc/myDatasource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
      </resource-ref>
    </session>
    <session id="bar">
      <!-- snip -->
      <resource-ref>
        <res-ref-name>jdbc/myDatasource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
      </resource-ref>
    </session>
  </enterprise-beans>
</ejb-jar>

您会注意到两个 EJB 都为它们定义了相同的资源引用。有没有办法在 J2EE 1.4 应用程序中消除这种重复？

理想情况下，我应该能够在应用程序中定义一次 jdbc/myDatasource 资源，并且让该容器内运行的任何内容都能够通过对“java:comp/env/jdbc/myDatasource”进行 JNDI 查找来访问它。有什么办法可以做到这一点吗？

原文

Is it possible to define resource references that are applicable to all EJBs in an application?

Currently I have an ejb-jar.xml that looks something like this:

<ejb-jar>
  <enterprise-beans>
    <session id="foo">
      <!-- snip -->
      <resource-ref>
        <res-ref-name>jdbc/myDatasource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
      </resource-ref>
    </session>
    <session id="bar">
      <!-- snip -->
      <resource-ref>
        <res-ref-name>jdbc/myDatasource</res-ref-name>
        <res-type>javax.sql.DataSource</res-type>
        <res-auth>Container</res-auth>
      </resource-ref>
    </session>
  </enterprise-beans>
</ejb-jar>

You'll notice that both EJBs have the same resource-ref defined for both of them. Is there a way to factor this duplication out within a J2EE 1.4 application?

Ideally I should be able to define the jdbc/myDatasource resource once within the application and have anything running inside that container be able to access it by doing a JNDI lookup for "java:comp/env/jdbc/myDatasource". Is there any way to accomplish this?

分享到QQ

分享到微博