Message737

There is a problem with the way that SQLWarnings are 
added in PyCursor.addWarning(SQLWarning).

The existing code is:

 PyTuple warn = new PyTuple();
 // there are three parts: (reason, state, vendorCode)
 warn.__add__(Py.java2py(warning.getMessage()));
 warn.__add__(Py.java2py(warning.getSQLState()));
 warn.__add__(Py.newInteger(warning.getErrorCode()));

However, PyTuple.__add__(PyObject) silently ignores 
any object that is not another PyTuple instance. This 
means that whilst there is an entry in the PyList for 
each warning, the tuple has a zero length and the 
warnings are effectively lost.



The fix is to replace the above code to use the PyTuple 
constructor that allows an array to be passed:

 PyObject[] msg = new PyObject[] {
     // there are three parts: (reason, state, vendorCode)
     Py.java2py(warning.getMessage()),
     Py.java2py(warning.getSQLState()),
     Py.newInteger(warning.getErrorCode())
 };
 PyTuple warn = new PyTuple(msg);