如何在IBatis 2中为带有参数类映射的SQL Update或SQL Select语句创建SQL In子句

如何在IBatis 2中为带有参数类映射的SQL Update或SQL Select语句创建SQL In子句

问题描述:

使用IBatis框架存在一些问题.我使用IBatis 2,现在尝试执行SQL select和SQL更新语句,该语句可与parameterClass"java.util.Map"和IBatis迭代器标记一起使用.但是现在看来,这两个组件无法协同工作.

I have some problemd by using the IBatis framework. I use IBatis 2 and now I tried to execute an SQL select and SQL update statement, which works with the parameterClass "java.util.Map" and an IBatis iterator tag. But now it seems, that these two component doesn´t work together.

如果我仅在SQL select语句中使用带有IBatis Iterator标记的Java列表,则可以正常工作.

If I use only a Java List with the IBatis Iterator tag inside a SQL select statement, it works fine.

如果我只在SQL updatestatement中使用带有IBatis Iterator标记的Java列表,则它不起作用.

If I use only a Java List with the IBatis Iterator tag inside a SQL updatestatement, it doesn´t works.

有必要使用Java Map作为parameterClass,因为我在SQL语句中需要多个参数.

It is necessary to use a Java Map as parameterClass, since I need more than one parameter inside the SQL statments.

现在,我创建了以下ArrayList"filterData",它将包含在HashMap"myMap"中:

Now I have created the following ArrayList "filterData", which will be included in the HashMap "myMap":

List<Long> filterData = new ArrayList<Long>();
filterData.add(11L);
filterData.add(22L);
filterData.add(33L);

HashMap<String, Object> myMap = new HashMap<String, Object>();
myMap.put("mySchema", "Schema1");
myMap.put("filterData", filterData);

以下Java代码将执行IBatis SQL select语句:

The following java code will be execute the IBatis SQL select statement:

Long selectedValues = (Long) getSqlMapClientTemplate().queryForObject("selectWithMap", myMap)

这是我的IBatis SQL选择语句:

Here is my IBatis SQL select statement:

<select id="selectWithMap" resultClass="long" parameterClass="java.util.Map">
    SELECT  COUNT(*)        
    FROM    $mySchema$.myTable 
    WHERE   myTable.id IN
    <iterate open="(" close=")" conjunction=",">
      #[filterData]#
    </iterate>      
</select>

以下Java代码将执行IBatis SQL更新语句:

The following java code will be execute the IBatis SQL update statement:

Integer updatedValues = (Integer) getSqlMapClientTemplate().update("updateWithMap", myMap);

这是我的IBatis SQL更新语句:

Here is my IBatis SQL update statement:

<update id="updateWithMap" parameterClass="java.util.Map">
    UPDATE  $mySchema$.myTable 
    SET     myTable.name = "Something!!",                   
    WHERE   myTable.id IN
    <iterate open="(" close=")" conjunction=",">
      #[filterData]#
    </iterate>      
</update>

我收到此错误消息:

 Check the parameter map.  
 Cause: com.ibatis.sqlmap.client.SqlMapException: ParameterObject or property was not a Collection, Array or Iterator.

我该如何解决这个问题?

How can I solve this problem?

非常感谢!

查看iBatis xml,看来您的filterData标记不正确.应该是:

Looking at the iBatis xml it looks like your filterData tag is incorrect. It should be:

<update id="updateWithMap" parameterClass="java.util.Map"> UPDATE $mySchema$.myTable SET myTable.name = "Something!!",
WHERE myTable.id IN <iterate open="(" close=")" conjunction=","> #filterData[]# </iterate>
</update>

<update id="updateWithMap" parameterClass="java.util.Map"> UPDATE $mySchema$.myTable SET myTable.name = "Something!!",
WHERE myTable.id IN <iterate open="(" close=")" conjunction=","> #filterData[]# </iterate>
</update>