ibatis-user-java mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From Geoff Chiang <geoffchi...@yahoo.com>
Subject Re: Bizzare discriminator/submap problem
Date Thu, 26 May 2005 01:03:10 GMT
I've done some further investigation and I think I've found the source
of the problem.  During the parsing of the sql maps, at the end of each
resultmap, the discriminator held in the static Variables class is set
for the just-ended resultmap (SqlMapParser:288).  The thing is, the
discriminator held in the Variables class is never being reset to null.
 So what is happening is that it is hitting the one discriminator that
I have defined, and then applying that discriminator to every resultmap
processed after that.

I'll raise a JIRA issue for this.

Geoff

--- Geoff Chiang <geoffchiang@yahoo.com> wrote:
> I'm trying to take advantage of the new discriminator
> and submap tags and I've come across something that
> seems rather odd to me.  Basically, the inheritence
> situation we have is that an AffiliateAccreditation
> class is a subclass of the Accreditation class.  So
> the resultmaps look something like this:
> 
> <resultMap id="accreditationResult"
> class="accreditation">
>     <result property="accreditationId"
> column="accreditation_id"/>
>     <result property="contactID" column="contact_id"/>
> 
>     <result property="accreditationType"
> column="accreditation_type_id"
> typeHandler="accreditationTypeTHC"/>
>     ...some more result tags...
>     <discriminator column="accreditation_type_id"
> javaType="int">
>         <subMap value="1"
> resultMap="affiliateAccreditationResult"/>
>     </discriminator>
> </resultMap>
> 
> <resultMap id="affiliateAccreditationResult"
> class="affiliateAccreditation"
> extends="accreditationResult">
>     ...some result tags...
> </resultMap>
> 
> Now when I start the application, there are no errors
> displayed relating to the SQLMaps stuff.  However, as
> soon as I get the part of the application that uses a
> SQLMaps query, I get an exception:
> 
> [26/05/05 09:49:37:991 EST] 2f7cb737 WebGroup      X
> Servlet Error: Bad SQL grammar [] in task
> 'SqlMapClient operation'; nested exception
> is
> com.ibatis.common.jdbc.exception.NestedSQLException:  
> 
> --- The error occurred in
> au/com/asx/cis/dao/ibatis/maps/Staff.xml.  
> --- The error occurred while applying a parameter map.
>  
> --- Check the
> Staff.getStaffByLogon-InlineParameterMap.  
> --- Check the results (failed to retrieve
> results).  
> --- Cause: java.sql.SQLException: Invalid column name:
> org.springframework.jdbc.BadSqlGrammarException: Bad
> SQL grammar [] in task 'SqlMapClient operation';
> nested exception is
> com.ibatis.common.jdbc.exception.NestedSQLException:  
> 
> --- The error occurred in
> au/com/asx/cis/dao/ibatis/maps/Staff.xml.  
> --- The error occurred while applying a parameter map.
>  
> --- Check the
> Staff.getStaffByLogon-InlineParameterMap.  
> --- Check the results (failed to retrieve results).  
> --- Cause: java.sql.SQLException: Invalid column name
> com.ibatis.common.jdbc.exception.NestedSQLException:  
> 
> --- The error occurred in
> au/com/asx/cis/dao/ibatis/maps/Staff.xml.  
> --- The error occurred while applying a parameter map.
>  
> --- Check the
> Staff.getStaffByLogon-InlineParameterMap.  
> --- Check the results (failed to retrieve results).  
> --- Cause: java.sql.SQLException: Invalid column name
> 
> (exception goes on for quite a while, but you get the
> idea.)
> 
> As you can see, I'm using iBatis in conjunction with
> Spring.  The "getStaffByLogon" query just happens to
> be the first use of SQLMaps in the application.  It
> resides in a totally different map (Staff.xml).  The
> Staff object is not connected to the Accreditation
> objects in any way.  If I comment out the
> discriminator and subMap lines, everything works as
> per normal.
> 
> Somewhere in the stack trace, it points to the
> IntegerTypeHandler class, so I placed a breakpoint at
> IntegerTypeHandler:35 (within the getResult(ResultSet,
> String) method).  Inspecting the parameters at that
> breakpoint, I found that it was looking for the
> integer value for the "accreditation_type_id" column,
> which is the same column specified in the
> discriminator tag.  This is despite it not being
> anywhere close to that query.
> 
> I've tried a few different combinations (specifying
> more than one subMap tag, trying a different
> javaType), but all end up the same.
> 
> Any ideas?
> 
> Geoff
> 
> Find local movie times and trailers on Yahoo! Movies.
> http://au.movies.yahoo.com
> 

Find local movie times and trailers on Yahoo! Movies.
http://au.movies.yahoo.com

Mime
View raw message