When I used one2many,some mistakes was found.

[GoogleCodeExporter]

Mybatis(mybatis-spring-1.0.3-SNAPSHOT mybatis-3.0.6) configuration
like this:

<select id="getBoardByID" parameterType="long"
               resultMap="boardMap">
               select board.ID, board.ParentID, board.ParentIDs,
               board.ChildIDs, board.BoardName, board.Explains, board.Bulletin,
               board.BoardPic, board.UseStat, board.Orders, board.NeedPasswd,
               board.Passwd, board.BoardLevel, board.BoardType,
               board.AllowHTML, board.AllowUBB, board.AuditPost,
               board.AuditAttach, board.AddUserPostNum, board.IsHidden,
               board.IsAuth, board.MainPostNum, board.PostNum,

               boardmaster.ID, boardmaster.UserName, boardmaster.RoleID,
               boardmaster.OverChildPurview, boardmaster.IsHidden,
               boardmaster.BoardID, boardtag.boardID, boardtag.ID, boardtag.ID,

               boardtag.TagName, boardtag.Orders, boardtag.BoardID from
               bbscs_board board left outer join bbscs_boardmaster boardmaster
               on board.ID = boardmaster.boardID left outer join bbscs_boardtag
               boardtag on board.ID = boardtag.boardID where board.ID = #{id}
               order by boardtag.orders asc
       </select>

       <resultMap type="org.jep.model.Board" id="boardMap">
               <id property="id" column="id" />
               <result property="parentID" column="parentID" />
               <result property="parentIDs" column="parentIDs" />
               <result property="childIDs" column="childIDs" />
               <result property="boardName" column="boardName" />
               <result property="explains" column="explains" />
               <result property="bulletin" column="bulletin" />
               <result property="passwd" column="passwd" />
               <result property="boardLevel" column="boardLevel" />
               <result property="boardType" column="boardType" />
               <result property="allowHTML" column="allowHTML" />
               <result property="allowUBB" column="allowUBB" />
               <result property="auditPost" column="auditPost" />
               <result property="auditAttach" column="auditAttach" />
               <result property="addUserPostNum" column="addUserPostNum" />
               <result property="isHidden" column="isHidden" />
               <result property="isAuth" column="isAuth" />
               <result property="mainPostNum" column="mainPostNum" />
               <result property="postNum" column="postNum" />
               <collection property="boardMaster" column="boardID"
ofType="org.jep.model.BoardMaster" javaType="hashmap">
                       <id column="id" property="id"/>
                       <result column="userName" property="userName"/>
                       <result property="roleID" column="roleID" />
                       <result property="overChildPurview" column="overChildPurview" />
                       <result property="isHidden" column="isHidden" />
                       <result property="boardId" column="boardId" />
               </collection>

               <collection property="boardTag" column="boardID"
ofType="org.jep.model.BoardTag">
                       <result property="tagName" column="tagName" />
                       <result property="orders" column="orders" />
                       <result property="boardID" column="boardID" />
               </collection>
    </resultMap>

Then,I tested the code in jUnit and the error message like these:
org.mybatis.spring.MyBatisSystemException: nested exception is
org.apache.ibatis.executor.ExecutorException: Error getting nested
result map values for 'boardMaster'.  Cause:
org.apache.ibatis.reflection.ReflectionException: Could not set
property 'boardMaster' of 'org.jep.model.Board@10e98d8' with value
'org.jep.model.BoardMaster@154b574' Cause:
java.lang.IllegalArgumentException: argument type mismatch
       at
org.mybatis.spring.MyBatisExceptionTranslator.translateExceptionIfPossible(MyBat
isExceptionTranslator.java:
73)
       at org.mybatis.spring.SqlSessionTemplate
$SqlSessionInterceptor.invoke(SqlSessionTemplate.java:358)
       at $Proxy15.selectOne(Unknown Source)
       at
org.mybatis.spring.SqlSessionTemplate.selectOne(SqlSessionTemplate.java:
155)
       at org.apache.ibatis.binding.MapperMethod.execute(MapperMethod.java:
75)
       at org.apache.ibatis.binding.MapperProxy.invoke(MapperProxy.java:25)
       at $Proxy19.getBoardByID(Unknown Source)
       at
org.jep.service.impl.BoardServiceCacheImp.getBoardByID(BoardServiceCacheImp.java
:
103)

So,what's the reason?Can you give me some advice?Thank you.

Original issue reported on code.google.com by Jiang.En...@gmail.com on 13 Dec 2011 at 2:55

[GoogleCodeExporter]

You should not use javaType on a collection element.

http://www.mybatis.org/core/sqlmap-xml.html

Original comment by eduardo.macarron on 27 Jan 2012 at 5:55

• Changed state: Invalid