Missing datatype can throw null pointer exception
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Key: IBATISNET-163
URL: http://issues.apache.org/jira/browse/IBATISNET-163
Project: iBatis for .NET
Type: Bug
Components: DataMapper
Versions: DataMapper 1.5
Reporter: Ted Husted
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.
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