求教ejb2.0遇到问题，bean之间的关系

Question

在ResourceItemBean的create的方法中不应该出现setXXX(XXX是ResourceItemBean的foreign-key),因为容器会帮你加

Answer 1

下面是一个学生与书本的例子，希望对你有用：
weblogic-cmp-rdbms-jar.xml片段：
<weblogic-rdbms-relation>
     <relation-name>student-books</relation-name>
     <weblogic-relationship-role>
         <relationship-role-name>BookCMPBeanRelationshipRole</relationship-role-name>
         <relationship-role-map>
             <foreign-key-table>bookcmptable</foreign-key-table>
             <primary-key-table>studentcmptable</primary-key-table>
             <column-map>
                 <foreign-key-column>studentkey</foreign-key-column>
                 <key-column>ssn</key-column>
             </column-map>
         </relationship-role-map>
     </weblogic-relationship-role>
 </weblogic-rdbms-relation>
ejb-jar.xml片段：   <display-name>StudentCMPBean</display-name>
   <ejb-name>StudentCMPBean</ejb-name>
   <home>com.softvan.test.cmp.student.StudentCMPHome</home>
   <remote>com.softvan.test.cmp.student.StudentCMP</remote>
   <ejb-class>com.softvan.test.cmp.student.StudentCMPBean</ejb-class>
   <persistence-type>Container</persistence-type>
   <prim-key-class>java.lang.Integer</prim-key-class>
   <reentrant>False</reentrant>
   <cmp-version>2.x</cmp-version>
   <abstract-schema-name>StudentCMPBean</abstract-schema-name>
   <cmp-field>
       <field-name>ssn</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>name</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>grade</field-name>
   </cmp-field>
   <primkey-field>ssn</primkey-field>
   <resource-ref>
       <description />
       <res-ref-name>jdbc/OraclePool</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
   </resource-ref>
</entity><entity>
   <display-name>BookCMPBean</display-name>
   <ejb-name>BookCMPBean</ejb-name>
   <home>com.softvan.test.cmp.book.BookCMPHome</home>
   <remote>com.softvan.test.cmp.book.BookCMP</remote>
   <ejb-class>com.softvan.test.cmp.book.BookCMPBean</ejb-class>
   <persistence-type>Container</persistence-type>
   <prim-key-class>com.softvan.test.cmp.book.BookCMPPK</prim-key-class>
   <reentrant>False</reentrant>
   <cmp-version>2.x</cmp-version>
   <abstract-schema-name>BookCMPBean</abstract-schema-name>
   <cmp-field>
       <field-name>isbn</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>copynumber</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>title</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>author</field-name>
   </cmp-field>
   <cmp-field>
       <field-name>studentkey</field-name>
   </cmp-field>
   <resource-ref>
       <description />
       <res-ref-name>jdbc/OraclePool</res-ref-name>
       <res-type>javax.sql.DataSource</res-type>
       <res-auth>Container</res-auth>
   </resource-ref>
</entity>
书本ejb的远程接口加入下面关联方法：
public void setStudentkey(Integer studentkey) throws RemoteException;
public Integer getStudentkey() throws RemoteException;

Answer 2

CMR字段不用设FK，部署时会自动加上的http://www-900.ibm.com/developerWorks/cn/cnedu.nsf/xml-onlinecourse-bytitle

Answer 3

你建立关系时所用的字段，set或者create时不能直接用，而是要set整个类