> > On Thu, 22 May 2008, Bill Janssen wrote: > > > I'm trying to figure out an issue here which sounds sort of similar. > > > > I've got a class in UpLib: > > > > class UpLibQueryParser (PythonMultiFieldQueryParser): > > > > in one of the methods (getFieldQuery), it needs to reparse the input, > > so I create a new instance of my class: > > > > newparser = self.__class__(self.fields, self.getAnalyzer()) > > > > and then cast it to a QueryParser so that I can call "parse()" on it: > > > > qp = QueryParser.cast_(newparser) > > > > But I get an exception at this point: > > > > File "/local/share/UpLib-1.7.4/code/uplib/indexing.py", line 320, in > > getFieldQuery > > qp = QueryParser.cast_(newparser) > > TypeError: <UpLibQueryParser: [EMAIL PROTECTED]> > > > > Above, I'm using "self.__class__" because I also create subclasses of > > this class, and I want an instance of the most specific subclass > > created. > > How about using type(self)(...) instead ? > > Andi..
Well, I print out the instance that's created, and it is the right class, so I think there is a bug in the cast_ mechanism (maybe PythonMultiFieldQueryParser doesn't know it inherits from QueryParser? After all, one is a Python class, and the other a Java class). But I tried using "type(self)" as you suggest, and I get the same TypeError. Bill _______________________________________________ pylucene-dev mailing list pylucene-dev@osafoundation.org http://lists.osafoundation.org/mailman/listinfo/pylucene-dev
