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https://issues.apache.org/jira/browse/IBATISNET-216?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Gilles Bayon closed IBATISNET-216.
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Resolution: Invalid
Assignee: Gilles Bayon
> GroupBy query calls default constructor when object should be null
> ------------------------------------------------------------------
>
> Key: IBATISNET-216
> URL: https://issues.apache.org/jira/browse/IBATISNET-216
> Project: iBatis for .NET
> Issue Type: Bug
> Components: DataMapper
> Affects Versions: DataMapper 1.6.2
> Environment: .NET 2.0, Sql Server 2000
> Reporter: Bob Hanson
> Assigned To: Gilles Bayon
>
> Using TestBobHanson in GroupByTest, use a database that does not have any
> rows in Users, ApplicationUsers, ApplicationUserRoles
> Change the GroupByBobHanson select statement to: (basically almost all INNER
> JOINs with LEFT JOIN)
> SELECT
> Applications.ApplicationId,
> Applications.ApplicationName,
> DefaultRole.RoleId as DefaultRoleId,
> DefaultRole.RoleName as DefaultRoleName,
> Users.UserId, Users.UserName,
> Addresses.AddressId,
> ApplicationUsers.ActiveFlag,
> Roles.RoleId, Roles.RoleName
> FROM Applications
> INNER JOIN Roles DefaultRole
> ON DefaultRole.RoleId = Applications.DefaultRoleId
> LEFT JOIN ApplicationUserRoles
> ON ApplicationUserRoles.ApplicationId =
> Applications.ApplicationId
> LEFT JOIN ApplicationUsers
> ON ApplicationUsers.ApplicationId =
> ApplicationUserRoles.ApplicationId AND ApplicationUsers.UserId =
> ApplicationUserRoles.UserId
> LEFT JOIN Users ON Users.UserId = ApplicationUsers.UserId
> LEFT JOIN Addresses
> ON Addresses.AddressId = Users.AddressId
> LEFT JOIN Roles Roles
> ON Roles.RoleId = ApplicationUserRoles.RoleId
> WHERE Applications.ApplicationName = 'Application Manager'
> The result will be an Application with all other columns NULL.
> When iBatis builds the Application object, the Users property ends up as a
> List containing a single User object. The User object is "empty" (default
> constructor is called but no other initialization takes place). In my
> opinion, iBatis should either set Users to null or, better yet, create an
> empty list (length = 0).
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