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From Brandon Goodin <brandon.goo...@gmail.com>
Subject Re: using #value[]#
Date Thu, 09 Jun 2005 21:08:38 GMT
Prepend does work. The <dynamic> tag removes the prepend of the first
content producing tag. So, i gave you a bad example. Sorry.

Yes, i have an example that works just fine.

This should work:

<select id="findCountsBySession" parameterClass="list" resultMap="counts">
 SELECT
   session_id as id, count(*) count
 FROM
   events
 <dynamic prepend="WHERE">
     <iterate 
       open=" session_id IN ("
      close=")" conjunction=",">
       #[]#
     </iterate>
 </dynamic>
 GROUP BY
   session_id
 </select>

You could also try (I'm not sure if this example will work, but give it a try):

<select id="findCountsBySession" parameterClass="list" resultMap="counts">
 SELECT
   session_id as id, count(*) count
 FROM
   events
 <dynamic prepend="WHERE" removeFirstPrepend="false">
     <iterate 
      prepend=" session_id IN " open=" ("
      close=")" conjunction=",">
       #[]#
     </iterate>
 </dynamic>
 GROUP BY
   session_id
 </select>

Here is a place where i use it:

  <delete id="removeCategories" parameterClass="list">
    DELETE FROM Category
    WHERE
    <iterate conjunction="OR" >
    (leftNode &gt; #[].leftNode# AND rightNode &lt; #[].rightNode#)
    </iterate>
  </delete>

Brandon

On 6/9/05, Paul Barry <pauljbarry3@gmail.com> wrote:
> Looks like prepend doesn't work, but that's ok, I can just hard code
> "session_id IN" before the iterate tag.  This works, if I wrap the
> List in a map with "sessionIds" as the key:
> 
>   <select id="findCountsBySession" parameterClass="map" resultMap="counts">
>     SELECT
>       session_id as id, count(*) count
>     FROM
>       events
>     WHERE
>       session_id IN
>       <iterate property="sessionIds" open="(" close=")" conjunction=",">
>         #sessionIds[]#
>       </iterate>
>     GROUP BY
>       session_id
>   </select>
> 
> This gives me the java.lang.StringIndexOutOfBoundsException: String
> index out of range: -2 exception:
> 
>   <select id="findCountsBySession" parameterClass="list" resultMap="counts">
>     SELECT
>       session_id as id, count(*) count
>     FROM
>       events
>     WHERE
>      session_id IN
>       <iterate property="value" open="(" close=")" conjunction=",">
>         #value[]#
>       </iterate>
>     GROUP BY
>       session_id
>   </select>
> 
> Seems like a bug, does anyone else have something like this working
> with #value[]#?
> 
> On 6/9/05, Paul Barry <pauljbarry3@gmail.com> wrote:
> > That makes sense, that is probably what I want, but I am still getting
> > the same exception.
> >
> > I am calling it this way (uses SpringFramework 1.1.5 SqlMapClientDaoSupport)
> >
> >     public Map<Long, Integer> findCountsBySession(List<Long> sessionIds)
{
> >         return getSqlMapClientTemplate().queryForMap("event.findCountsBySession",sessionIds,"id","count");
> >     }
> >
> > Could the List<Long> giving it problems?
> >
> > On 6/9/05, Brandon Goodin <brandon.goodin@gmail.com> wrote:
> > >   <select id="findCountsBySession" parameterClass="list" resultMap="counts">
> > >    SELECT
> > >      session_id as id, count(*) count
> > >    FROM
> > >      events
> > >    <dynamic prepend="WHERE">
> > >        <iterate property="value" prepend="session_id IN" open="("
> > > close=")" conjunction=",">
> > >          #value[]#
> > >        </iterate>
> > >    </dynamic>
> > >    GROUP BY
> > >      session_id
> > >  </select>
> > >
> > > Brandon
> > >
> > > On 6/9/05, Paul Barry <pauljbarry3@gmail.com> wrote:
> > > > 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)
> > > >
> > >
> >
>

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