Upon errors null will be returned and throws will be assigned a Error from the DataModelError domain.
This method is similar to get_value_at, except that it also allows one to specify the expected Type of the value to get: if the data model returned a Value of a type different than the expected one, then this method returns null and an error code.
Note: the same limitations and usage instructions apply as for get_value_at.
Upon errors null will be returned and throws will be assigned a Error from the DataModelError domain.
| this |
a DataModel object. |
| col |
a valid column number. |
| row |
a valid row number. |
| expected_type |
the expected data type of the returned value |
| nullok |
if TRUE, then NULL values (value of type gda_type_null) will not generate any error |
|
a Value containing the value stored in the given position, or null on error (out-of-bound position, wrong data type, etc). |