hibernate3 调用oracle存储过程的方法

配置文件：
<hibernate-mapping>
    <class name="vo.SshPost" table="ssh_post" >
     <!-- <cache usage="read-write"/>-->
        <id name="postId" type="java.lang.String">
            <column name="post_id" />
            <generator class="native" />
        </id>
       
        <property name="postName" type="java.lang.String">
            <column name="post_name" length="20" />
        </property>
        <property name="postNo" type="java.lang.String">
            <column name="post_no" length="20" />
        </property>
        <filter name="myfilter" condition=":myfilterParam = post_name"/>
      
    </class>
<sql-query callable="true" name="selectAllUsers">
 <return class="vo.SshPost">
     <return-property name="postId" column="POST_ID"/>
     <return-property name="postName" column="POST_NAME"/>
     <return-property name="postNo" column="POST_NO"/>
 </return>
 { call P_TEST(?,:VPOSTNO) }
     </sql-query>
</hibernate-mapping>  
存储过程：
CREATE OR REPLACE PACKAGE TESTPACKAGE  AS
 TYPE Test_CURSOR IS REF CURSOR;
end TESTPACKAGE;
CREATE OR REPLACE PROCEDURE P_TEST(P_CURSOR OUT TESTPACKAGE.TEST_C