WIP rdf graph processing library

python/cic_schema/cert.py

@@ -1,17 +1,44 @@
 # standard imports
 import sys
+import enum
 
 # external imports
-from rdflib import Graph
+from rdflib import Graph, RDF
+from rdflib.term import URIRef
+from rdflib.collection import Collection
+
+
+class CIC(enum.Enum):
+    voucherContract = URIRef('https://defalsify.org/rdf-eth/0.1/voucherContract')
+    voucherTransfer = URIRef('https://defalsify.org/rdf-eth/0.1/voucherTransfer')
 
 
 class Cert:
 
-    def __init__(self, path):
+    def __init__(self):
         self.g = Graph()
-        self.g.parse(path, format='turtle')
+        self.txs = {}
+        self.typ = None
 
 
+    @classmethod
+    def from_path(cls, path):
+        c = cls()
+        c.g.parse(path, format='turtle')
+        c.__apply_graph()
+        return c
+
+
+    def __apply_graph(self):
+        current_subject = None
+        for (s, p, o) in self.g:
+            if s != current_subject: 
+                current_subject = s
+            if p == RDF.first:
+                pass
+            print('{} {} {}'.format(s, p, o))
+                
+
     def export(self, w=sys.stdout):
         v = self.g.serialize(format='xml')
         w.write(v)