[IBATISNET-239] System.InvalidCastException when Stored Procedure out parameters are null

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: DataMapper 1.6.1
• Fix Version/s: DataMapper 1.6.2
• Component/s: DataMapper
• Environment: All
• Assignee: Gilles Bayon
• Reporter: Spyros Oikonomopoulos
• Created: 13/Sep/07 16:19
• Updated: 15/Sep/07 10:42
• Resolved: 15/Sep/07 10:42

Description

When a stored procedure with out parameters returns a null value in one of the parameters, the following Exception occurs:

IBatisNet.Common.Exceptions.ProbeException : Unable to cast object of type 'System.DBNull' to type XXXX

See also http://www.nabble.com/output-parameters-and-dbnull-p9643387.html

Attached a patch that seems to solve the problem.