Daniel@0: # Part of DML (Digital Music Laboratory)
Daniel@0: # Copyright 2014-2015 Samer Abdallah, University of London
Daniel@0:  
Daniel@0: # This program is free software; you can redistribute it and/or
Daniel@0: # modify it under the terms of the GNU General Public License
Daniel@0: # as published by the Free Software Foundation; either version 2
Daniel@0: # of the License, or (at your option) any later version.
Daniel@0: # 
Daniel@0: # This program is distributed in the hope that it will be useful,
Daniel@0: # but WITHOUT ANY WARRANTY; without even the implied warranty of
Daniel@0: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
Daniel@0: # GNU General Public License for more details.
Daniel@0: # 
Daniel@0: # You should have received a copy of the GNU General Public
Daniel@0: # License along with this library; if not, write to the Free Software
Daniel@0: # Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
Daniel@0: 
Daniel@0: # -*- coding: utf-8 -*-
Daniel@0: __author__="samer"
Daniel@0: 
Daniel@0: from rdflib import Namespace, BNode, Literal, XSD
Daniel@0: 
Daniel@0: cla_ns   = Namespace("http://dml.org/cla#")
Daniel@0: tl_ns    = Namespace("http://purl.org/NET/c4dm/timeline.owl#")
Daniel@0: event_ns = Namespace("http://purl.org/NET/c4dm/event.owl#")
Daniel@0: af_ns    = Namespace("http://purl.org/ontology/af/")
Daniel@0: 
Daniel@0: def parse_xsd_duration(string): 
Daniel@0:     return float(string[2:len(string)-1])
Daniel@0: 
Daniel@0: def event_time_prop(graph,ev,pred):
Daniel@0:     return parse_xsd_duration(graph.value(graph.value(ev,event_ns.time), pred))
Daniel@0: