Backward, confusing error message when you use the wrong ResultSet.getXXX()
method in the client driver
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Key: DERBY-4949
URL: https://issues.apache.org/jira/browse/DERBY-4949
Project: Derby
Issue Type: Bug
Components: Network Client
Affects Versions: 10.8.0.0
Reporter: Rick Hillegas
Attachments: zz.java
If you try to get a Time value out of an INTEGER column, the client driver
gives this error. I believe that similar nonsense comes back when you try other
mismatched getters on other datatypes:
"An attempt was made to get a data value of type 'java.sql.Types 4' from a
data value of type 'java.sql.Time'."
The exception is a java.sql.SQLDataException with SQLState 22005. A better
message would be:
"An attempt was made to get a data value of type 'java.sql.Time' from a
data value of type INTEGER'."
I recommend two improvements to the utility method which generates these
exceptions:
1) Flip the order of the type names.
2) Use the ResultSetMetaData to look up the source data type name.
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