EJB 2.1项目中应用程序范围的resource-ref

<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>