loops/classifier/sample.py
helmutm bf8a641654 work in progress: automatic classification
git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@2071 fd906abe-77d9-0310-91a1-e0d9ade77398
2007-09-26 16:38:46 +00:00

101 lines
3.3 KiB
Python

#
# Copyright (c) 2007 Helmut Merz helmutm@cy55.de
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
"""
Sample classifier implementation.
$Id$
"""
from zope import component
from zope.app.catalog.interfaces import ICatalog
from zope.component import adapts
from cybertools.organize.interfaces import IPerson
from cybertools.typology.interfaces import IType
from loops.classifier.base import Analyzer
from loops.classifier.base import Statement
class SampleAnalyzer(Analyzer):
""" A fairly specific analyzer that expects filenames following this
format:
ctype_name_doctype_owner_date.extension
with ctype = ('cust', 'emp'), spec is the short name of a customer or
an employee, doctype = ('note', 'contract'), and owner
being the short name of the user that is responsible for the
resource.
"""
def handleCustomer(self, name, classifier):
result = []
candidates = self.findConcepts(name)
cm = self.getConceptManager(classifier)
custTypes = [c for c in (cm.get('institution'), cm.get('customer'),)
if c is not None]
for c in candidates:
ctype = IType(c)
if ctype.typeProvider in custTypes:
result.append(Statement(c))
return result
def handleEmployee(self, name, classifier):
result = []
#print 'employee', name
return result
def handleOwner(self, name, classifier):
result = []
#print 'owner', name
return result
def handleDoctype(self, name, classifier):
result = []
#print 'doctype', name
return result
handlers = dict(cust=handleCustomer, emp=handleEmployee)
def extractStatements(self, informationSet, classifier=None):
result = []
if classifier is None:
return result # classifier is needed for getting access to concepts
fn = informationSet.get('filename')
if fn is None:
return result
parts = fn.split('_')
if len(parts) > 1:
ctype = parts.pop(0)
if ctype in self.handlers:
name = parts.pop(0)
result.extend(self.handlers[ctype](self, name, classifier))
if len(parts) > 1:
result.extend(self.handleDoctype(parts.pop(0), classifier))
if len(parts) > 1:
result.extend(self.handleOwner(parts.pop(0), classifier))
return result
def findConcepts(self, name):
cat = component.getUtility(ICatalog)
return cat.searchResults(loops_text=name)
def getConceptManager(self, obj):
return obj.context.getLoopsRoot().getConceptManager()