Invalid XML Data set does not throw an appropriate exception

[svettwer]

If you define a XML Result set during a JDBC response, it should look like this:

<dataset>
  <row>
    <whateverColumn>value</whateverColumn>
  </row>
</dataset>

If you leave out the row tag, the XmlDataSetProducer does not throw an appropriate exception, which states that the dataset specification is invalid.

Instead, a dataset with empty rows is produced causing a null pointer during data access in the result set.

This makes it hard for the user to find out, that the dataset specification is invalid.