diff dml-cla/python/rdfutils.py @ 0:718306e29690 tip

commiting public release

--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/dml-cla/python/rdfutils.py	Tue Feb 09 21:05:06 2016 +0100
@@ -0,0 +1,33 @@
+# Part of DML (Digital Music Laboratory)
+# Copyright 2014-2015 Samer Abdallah, University of London
+ 
+# 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 library; if not, write to the Free Software
+# Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+
+# -*- coding: utf-8 -*-
+__author__="samer"
+
+from rdflib import Namespace, BNode, Literal, XSD
+
+cla_ns   = Namespace("http://dml.org/cla#")
+tl_ns    = Namespace("http://purl.org/NET/c4dm/timeline.owl#")
+event_ns = Namespace("http://purl.org/NET/c4dm/event.owl#")
+af_ns    = Namespace("http://purl.org/ontology/af/")
+
+def parse_xsd_duration(string): 
+    return float(string[2:len(string)-1])
+
+def event_time_prop(graph,ev,pred):
+    return parse_xsd_duration(graph.value(graph.value(ev,event_ns.time), pred))
+