Implemented a first and basic version of a Rete rule engine

tests/sheerkarete/RuleForTestingRete.py

@@ -0,0 +1,24 @@
+from core.rule import Rule, ACTION_TYPE_TEST
+
+
+class RuleForTestingRete(Rule):
+    def __init__(self, *disjunctions, name=None):
+        """
+        :param disjunctions: list of list of Condition. List of OR. inner list is a list of AND
+        :para name: optional name for the rule
+        """
+        try:
+            predicate = " or ".join([
+                " and ".join([str(c) for c in disjunction.conditions]) for disjunction in
+                disjunctions])
+        except AttributeError:
+            predicate = "N/A"
+
+        super().__init__(ACTION_TYPE_TEST, name, predicate)
+        self.disjunctions = disjunctions
+        self.metadata.id = 9999
+        self.metadata.is_compiled = True
+        self.metadata.is_enabled = True
+
+    def get_rete_disjunctions(self):
+        return self.disjunctions