using #value[]#

[Paul Barry]

I am using iBatis 2.1.0.565 with JDK 1.5.0.  I am trying to pass a
List to a sqlmap and then use it to generate a list of comma-separated
values for the IN clause of a query, like this:

  <resultMap id="counts" class="map">
    <result property="id" column="id" javaType="long"/>
    <result property="count" column="count" javaType="int"/>
  </resultMap>
  
  <select id="findCountsBySession" parameterClass="list" resultMap="counts">
    SELECT
      session_id as id, count(*) count
    FROM
      events
    <dynamic prepend="WHERE">
        <iterate property="value" open="(" close=")" conjunction=",">
        </iterate>
      session_id IN #value[]#
    </dynamic>
    GROUP BY
      session_id    
  </select>

The query I would like to end up with is:

SELECT
  session_id, count(*) count
FROM
  events
WHERE
  session_id IN (1,2,3)
GROUP BY
  session_id

But instead I get an exception.  Can you not use #value[]#?  Here is
the exception:

java.lang.StringIndexOutOfBoundsException: String index out of range: -2
        at java.lang.String.substring(String.java:1768)
        at com.ibatis.common.beans.GenericProbe.getObject(GenericProbe.java:55)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.elements.IterateTagHandler.doStartFragment(IterateTagHandler.java:34)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:129)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:132)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.processBodyChildren(DynamicSql.java:99)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.process(DynamicSql.java:79)
        at 
com.ibatis.sqlmap.engine.mapping.sql.dynamic.DynamicSql.getParameterMap(DynamicSql.java:61)
        at 
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryWithCallback(GeneralStatement.java:152)
        at 
com.ibatis.sqlmap.engine.mapping.statement.GeneralStatement.executeQueryForList(GeneralStatement.java:119)
        at 
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:610)
        at 
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForList(SqlMapExecutorDelegate.java:584)
        at 
com.ibatis.sqlmap.engine.impl.SqlMapExecutorDelegate.queryForMap(SqlMapExecutorDelegate.java:700)
        at 
com.ibatis.sqlmap.engine.impl.SqlMapSessionImpl.queryForMap(SqlMapSessionImpl.java:121)
        at 
com.ibatis.sqlmap.engine.impl.SqlMapClientImpl.queryForMap(SqlMapClientImpl.java:93)