"""
Created on 05.08.2011

@author: christian
"""
from django.http import Http404
from . import registry


def get_lookup(request, lookup_name):
    lookup_cls = registry.get(lookup_name)
    if lookup_cls is None:
        raise Http404(u'Lookup %s not found' % lookup_name)
    lookup = lookup_cls()
    return lookup.results(request)