X-Git-Url: http://git.onelab.eu/?p=myslice.git;a=blobdiff_plain;f=manifold%2Futil%2Fpredicate.py;h=3b5ba80d43e509f885a3cb31e27841cc6803060e;hp=aa09379cb5b38f969847b0d2da14edfed842f8b9;hb=d68dcefd28c832608cdb359a07a8b871cbe612ae;hpb=ac2dda758798f7e44de062d370763c639cc6a375

diff --git a/manifold/util/predicate.py b/manifold/util/predicate.py
index aa09379c..3b5ba80d 100644
--- a/manifold/util/predicate.py
+++ b/manifold/util/predicate.py
@@ -112,6 +112,7 @@ class Predicate:
     def get_tuple(self):
         return (self.key, self.op, self.value)
 
+
     def get_str_op(self):
         op_str = [s for s, op in self.operators.iteritems() if op == self.op]
         return op_str[0]
@@ -119,6 +120,9 @@ class Predicate:
     def get_str_tuple(self):
         return (self.key, self.get_str_op(), self.value,)
 
+    def to_list(self):
+        return list(self.get_str_tuple())
+
     def match(self, dic, ignore_missing=False):
         if isinstance(self.key, tuple):
             print "PREDICATE MATCH", self.key
@@ -223,3 +227,9 @@ class Predicate:
             return set(self.value)
         else:
             return set([self.value])
+
+    def has_empty_value(self):
+        if isinstance(self.value, (list, tuple, set, frozenset)):
+            return not any(self.value)
+        else:
+            return not self.value