问题描述
我指的是使用动态在Liferay中并使用MySQL 5.5进行查询，但我们需要调用存储过程来代替涉及多个实体的自定义查询.我们创建了一个示例过程
I am referring Using dynamic query in Liferay and using MySQL 5.5 but instead of custom queries involving multiple entities,we need to call a stored procedure.We have created a sample procedure
delimiter //
Create Procedure proc_check (OUT count INT)
begin
select count(*) into count from lg_office ;
end//
在default.xml中，我们使用了包含自定义查询的
In default.xml,containing custom queries,we have used
<sql id="de.uhh.l2g.plugins.service.persistence.ProducerFinder.findOfficeCount">
<![CDATA[
Call proc_check(@output)
]]>
</sql>
在相应的Finder方法中，我们使用下面的代码段调用存储的proc，并在开始和结束处均传递-1.
In the respective Finder method,we used the below snippet to call the stored proc,passing -1 for both begin and end.
String sql = CustomSQLUtil.get(FIND_OFFICE_COUNT);
SQLQuery q = session.createSQLQuery(sql);
QueryPos qPos = QueryPos.getInstance(q);
//qPos.add(lectureseriesId);
List <Integer> sl = (List<Integer>) QueryUtil.list(q, getDialect(), begin, end);
return sl;
在QueryUtil中，我们找不到其他适用的方法来执行调用.发布此消息后，我们将收到以下错误
In QueryUtil,we could not find other applicable methods to execute the call.Post this we get the below error
ERROR [RuntimePageImpl-5][JDBCExceptionReporter:82] ResultSet is from UPDATE. No Data.
这种方法是正确的吗?如果缺少某些东西，请提出达到相同目的的方法.
Is this approach correct with something missing or if not,please suggest approach to achieve the same.
推荐答案
liferay中没有内置的任何实用程序来调用存储过程，但是您可以通过DataAccess.getConnection();获得连接并像这样使用jdbc api方式
there isn't any utility built-in in liferay to call stored procedure but you can just get the connection with DataAccess.getConnection(); and use the jdbc api like this way
Connection connection =DataAccess.getConnection();
CallableStatement cs = connection.prepareCall("{Call proc_check(@output)}");
ResultSet rs = cs.executeQuery();
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