[IBATISNET-163] Missing datatype can throw null pointer exception

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Fixed
• Affects Version/s: DataMapper 1.5
• Fix Version/s: DataMapper 1.5
• Component/s: DataMapper
• Assignee: Unassigned
• Reporter: Ted Husted
• Created: 22/Jun/06 01:12
• Updated: 26/Jun/06 02:16
• Resolved: 26/Jun/06 02:16

Description

When using a numeric type that does not match a registred type, it's possible for the * to remain null. Then, at ResultProperty line 398 (build #412814, et seq.), the _typeHandler can be called directly

• value = _typeHandler.GetValueByIndex(this, dataReader);

This causes a deep null pointer exception that is difficult to trace.

We should patch this with a null guard that throws an exception with a meaningful message, like "Handler for DataType not registered." Something to considerr would be to attach the exception message to the TypeHandler property., and then use the property rather than the private field.

-Ted.