A simple logger for logging events that failed to be applied by DBSynchronizer.
The output is two XML files, one a root file and another containing the actual XML elements.
The root file name is the same as the one provided in the constructor. If not provided,
it is failedevents.xml. The other file is with _entries appended to its name.
The generated XML can then be provided to replay-failed-dmls GFXD command from the command line.
Get the value of a column in current row in ResultSet as a string.
For binary data this returns hex-encoded string of the bytes.
For a java object this returns hex-encoded string of the serialized bytes
for the object.