jboss中非关键字段的finder方法的ejb-ql句子应该写在哪个文件中?我写在findAll下面好像没用
03-07-03
jd2bs
我的环境是jboss3.0.7+lomboz2.1+Eclipse;我的sessionbean是用remote接口调用Entity bean的,jsp再调用sessionbean.我的ejb-jar.xml如下:
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE ejb-jar PUBLIC "-//Sun Microsystems, Inc.//DTD Enterprise JavaBeans 2.0//EN" "http://java.sun.com/dtd/ejb-jar_2_0.dtd">
<ejb-jar >
<description><![CDATA[No Description.]]></description>
<display-name>Generated by XDoclet</display-name>
<enterprise-beans>
<!-- Session Beans -->
<!--
To add session beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called session-beans.xml that contains
the <session></session> markup for those beans.
-->
<session >
<description><![CDATA[]]></description>
<ejb-name>UserManager</ejb-name>
<home>com.webex.testj2ee.UserManagerHome</home>
<remote>com.webex.testj2ee.UserManager</remote>
<local-home>com.webex.testj2ee.UserManagerLocalHome</local-home>
<local>com.webex.testj2ee.UserManagerLocal</local>
<ejb-class>com.webex.testj2ee.UserManagerSession</ejb-class>
<session-type>Stateless</session-type>
<transaction-type>Container</transaction-type>
</session>
<!-- Entity Beans -->
<entity >
<description><![CDATA[]]></description>
<ejb-name>Users</ejb-name>
<home>com.webex.testj2ee.UsersHome</home>
<remote>com.webex.testj2ee.Users</remote>
<local-home>com.webex.testj2ee.UsersLocalHome</local-home>
<local>com.webex.testj2ee.UsersLocal</local>
<ejb-class>com.webex.testj2ee.UsersCMP</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>mySchema1</abstract-schema-name>
<cmp-field >
<description><![CDATA[Returns the userid]]></description>
<field-name>userid</field-name>
</cmp-field>
<cmp-field >
<description><![CDATA[Returns the name]]></description>
<field-name>name</field-name>
</cmp-field>
<cmp-field >
<description><![CDATA[Returns the pass]]></description>
<field-name>pass</field-name>
</cmp-field>
<primkey-field>userid</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM mySchema1 as a]]></ejb-ql>
</query>
<!-- Write a file named ejb-finders-UsersBean.xml if you want to define extra finders. -->
</entity>
<entity >
<description><![CDATA[]]></description>
<ejb-name>Orders</ejb-name>
<home>com.webex.testj2ee.OrdersHome</home>
<remote>com.webex.testj2ee.Orders</remote>
<local-home>com.webex.testj2ee.OrdersLocalHome</local-home>
<local>com.webex.testj2ee.OrdersLocal</local>
<ejb-class>com.webex.testj2ee.OrdersCMP</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>mySchema2</abstract-schema-name>
<cmp-field >
<description><![CDATA[Returns the orderid]]></description>
<field-name>orderid</field-name>
</cmp-field>
<cmp-field >
<description><![CDATA[Returns the userid]]></description>
<field-name>userid</field-name>
</cmp-field>
<primkey-field>orderid</primkey-field>
<query>
<query-method>
<method-name>findAll</method-name>
<method-params>
</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM mySchema2 as a]]></ejb-ql>
</query>
<!-- Write a file named ejb-finders-OrdersBean.xml if you want to define extra finders. -->
<!--
To add entity beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called entity-beans.xml that contains
the <entity></entity> markup for those beans.
-->
<!-- Message Driven Beans -->
<!--
To add message driven beans that you have deployment descriptor info for, add
a file to your XDoclet merge directory called message-driven-beans.xml that contains
the <message-driven></message-driven> markup for those beans.
-->
</enterprise-beans>
<!-- Relationships-->
<!-- Assembly Descriptor -->
</ejb-jar>
<p>
|
jd2bs
2003-07-03 13:51
中间那个注释说写到ejb-finders-OrdersBean.xml,我写了根本没用,部署后还是说找不到方法findByUserId.
ejb-finders-OrdersBean.xml:
<?xml version="1.0" encoding="UTF-8"?>
<query>
<query-method>
<method-name>findByUserId</method-name>
<method-params>java.lang.Integer</method-params>
</query-method>
<ejb-ql><![CDATA[SELECT OBJECT(a) FROM mySchema2 as a where a.userid=?1]]></ejb-ql>
</query>
<p>
|
以上问题我在jboss console中只是看到个warning,看起来部署好像还是成功的,只不过该findByUserId方法有问题.但我在jsp页面调用另一个方法getUsers,页面一直在load,很长时间都load不出来结果?jboss console也没抛出错误,真奇怪.
index.jsp:
<!-- Copyright (c) 2002 by ObjectLearn. All Rights Reserved. -->
<%@page import="com.webex.testj2ee.*,java.util.*,javax.naming.*"
%>
<html>
<head>
<title>Welcome</title>
</head>
<body>
<table width=60% border=1>
<%
try{
Hashtable props = new Hashtable();
props.put(InitialContext.INITIAL_CONTEXT_FACTORY,
"org.jnp.interfaces.NamingContextFactory");
props.put(InitialContext.PROVIDER_URL, "jnp://127.0.0.1:1099");
InitialContext initialContext = new InitialContext(props);
UserManagerHome umhome=(UserManagerHome)initialContext.lookup(UserManagerHome.JNDI_NAME);
UsersData[] ud=umhome.create().getUsers();
for(int i=0;i<ud.length;i++){
%>
<tr>
<td><%=(ud[i].getUserid().toString())%></td>
<td><%=(ud[i].getName())%></td>
<td><%=(ud[i].getPass())%></td>
</tr>
<%}
}
catch(NamingException ex){
ex.printStackTrace();
}
%>
</table>
</body>
</html>
<p>
|
getUsers方法:
public UsersData[] getUsers(){
try{
ArrayList userList = new ArrayList(50);
Collection c=UsersUtil.getHome().findAll();
Iterator it = c.iterator();
while(it.hasNext()){
Users u=(Users)it.next();
UsersData ud=new UsersData(u.getUserid(),u.getName(),u.getPass());
userList.add(ud);
}
return (UsersData[])userList.toArray(new UsersData[userList.size()]);
}
catch(FinderException e){
e.printStackTrace();
}
catch(RemoteException ex){
ex.printStackTrace();
}
catch(NamingException ex){
}
return null;
}
<p>
|
bad_bird
2003-07-03 15:53
为什么不把该方法定义在ejb-jar.xml中？
jd2bs
2003-07-03 15:59
兄弟，你看我的标题；我开始就是写在ejb-jar.xml中findAll下面的；控制台报warning找不到啊
bluegirl
2003-07-03 16:56
跟我遇到的一样，我现在用findall方法可是报错：
accountsUnknown query: public abstract java.util.Collection com.bank.ProtonAccountHome.findAllAccounts() throws javax.ejb.FinderException,java.rmi.RemoteException |
可是在jaws.xml文件中已经定义过了。
<finder>
<name>findByID</name>
<query><![CDATA[where account_number = {0}]]></query>
<order></order>
</finder>
顺便问一句为什么不在jaws文件中定义？
我用的是jboss4和db2
<order></order>
</finder>
<finder>
<name>findAllAcounts</name>
<query />
<order/>
</finder>
|
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