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javascript流程设计器,主要可以实现拖拽图形

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<td width="90%"><font size="4" face="Verdana, Arial, Helvetica"><b>XDoclet 和 EJB 技术：使用会话 bean</b></font></td><td width="200" align="right"><font size="1" face="Verdana, Arial, Helvetica"><nobr>   第 14 页（共16 页）</nobr></font></td>
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<p>
既然您已定义了一些实体 bean，我们来创建访问实体 bean 的会话 bean（如下所示）：
       <pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
 /**
  * Provides a session facade that works with cmp/cmr from EJB 2.0 
  * based entity beans.
  *  
  * This bean must uses container-managed transactions. 
  * It works with the others entity beans to provide authentication services.
  * This bean does not maintain any state; thus, it can be stateless.
  *
  *
  * @ejb.bean name="HRSystem" type="Stateless"
  *     local-jndi-name="HRSystem"            
  * 
  * 
  * @ejb.ejb-ref ejb-name="DeptBean" view-type="local"
  * @ejb.ejb-ref ejb-name="EmployeeBean" view-type="local"
  * 
  */
 public class HRSystemBean implements SessionBean {
 
     /**
      * Get a list of all the depts.
      *
      * @return All the group names.
      * 
 
      * This method is part of the ejb interface.
      * @ejb.interface-method view-type="local"
      * @ejb.transaction type="Required"
      */
     public String[] getDepts() {
         ArrayList deptList = new ArrayList(50);
         Collection collection = LocalFinderUtils.findAll("DeptBean");
         Iterator iterator = collection.iterator();
         while (iterator.hasNext()) {
                 Dept group = (Dept) iterator.next();
                 deptList.add(group.getName());
         }
         return (String[]) deptList.toArray(new String[deptList.size()]);
     }
 
     </code>
</pre>
					
</p>
<p>
请注意，会话 bean 使用相同的 <code>ejb.bean</code> 标记，但是它不指定 CMP，而指定这是无状态 bean（如下所示）：</p>
<p>
						
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
 
 /**
  * Provides a session facade that works with cmp/cmr from EJB 2.0 
  * based entity beans.
  *  
  *
  *
  * @ejb.bean name="HRSystem" type="Stateless"
  *     local-jndi-name="HRSystem"            
  * 
  ...
  * 
  */
 public class HRSystemBean implements SessionBean {
       ...
 
 
     </code>
</pre>
					
</p>
<p>以上代码导致 XDoclet 生成以下清单。</p>
<p>
						
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
    &lt;enterprise-beans&gt;
 
       &lt;!-- Session Beans --&gt;
       &lt;session &gt;
          &lt;description&gt;provides a session facade that works with 
          cmp/cmr from EJB 2.0 based entity beans.&lt;/description&gt;
 
 
          &lt;ejb-name&gt;HRSystem&lt;/ejb-name&gt;
 
          &lt;home&gt;ejb.HRSystemHome&lt;/home&gt;
          &lt;remote&gt;ejb.HRSystem&lt;/remote&gt;
          &lt;local-home&gt;ejb.HRSystemLocalHome&lt;/local-home&gt;
          &lt;local&gt;ejb.HRSystemLocal&lt;/local&gt;
          &lt;ejb-class&gt;ejb.HRSystemBean&lt;/ejb-class&gt;
          &lt;session-type&gt;Stateless&lt;/session-type&gt;
          &lt;transaction-type&gt;Container&lt;/transaction-type&gt;
          ...
     </code>
</pre>
					
</p>
<p>
 
 
</p>
<p>
						
<pre>
<code style="font-family: Courier New, Courier, monospace; font-size: 12">
我很高兴，XDoclet 生成这个清单而我不必编写它。
     </code>
</pre>
					
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