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From "Clough, Samuel \(USPC.PRG.Atlanta\)" <Samuel_Clo...@princetonrg.com>
Subject RE: Multiple resultsets in data mapper
Date Thu, 24 May 2007 13:41:58 GMT
Off hand, I'd say look at the methods for loading complex types and strategies to avoid what's
known as the "N + 1 select" problem.  I don't think multiple recordsets is your best solution
if I understand your situation properly.


From: Miika Mäkinen [mailto:mmiika@gmail.com] 
Sent: Wednesday, May 23, 2007 10:49 PM
To: user-cs@ibatis.apache.org
Subject: Multiple resultsets in data mapper

Hi All,
I'm just getting into iBatis, and I'd like to if it can handle multiple resultsets (.Net 2.0,
Sql Server 2005)

For example, I'd have an objects like (pseudo-code):

class Company
    int Id;
    string Name;
    List<Classification> Classifications;

class Classification
   int Id;
   string Name;

And a stored procedure would return 2 resultssets:

SELECT CompanyId, CompanyName FROM Company;
SELECT CompanyId, ClassificationId, ClassificationName FROM CompanyClassification INNER JOIN
Classification ON CompanyClassification.ClassificationId=Classification .ClassificationId;

Can I some how map the 2nd returned table into "List<Classification> Classifications"
inside  my "Company" object?

Miika Mäkinen 

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