proper uuid for queries

[unfold.git] / engine / manifoldquery.py

diff --git a/engine/manifoldquery.py b/engine/manifoldquery.py
index b8f594e..ab09bfe 100644 (file)
--- a/engine/manifoldquery.py
+++ b/engine/manifoldquery.py
@@ -1,8 +1,8 @@
 import json
+import uuid
 
-# xxx php has uniqid, need to find a module for that
-counter=1
-def uniqid (): global counter; counter += 1; return counter
+def uniqid (): 
+    return uuid.uuid4().hex
 
 class ManifoldQuery:
 
@@ -36,10 +36,110 @@ class ManifoldQuery:
         # xxx unique can be removed, but for now we pad the js structure
         unique=0
 
+        aq = self.analyzed_query.to_json() if self.analyzed_query else 'null'
         # subqueries is a dictionary method:query
-        sq=", ".join ( [ "'%s':%s" % (method, subquery.to_json())
+        if not self.subqueries: 
+            sq="{}"
+        else:
+            sq=", ".join ( [ "'%s':%s" % (method, subquery.to_json())
                       for (method, subquery) in self.subqueries.iteritems()])
+            sq="{%s}"%sq
         
-        aq = self.analyzed_query.to_json() if self.analyzed_query else 'null'
-        
-        return "new Query('%(a)s', '%(m)s', '%(t)s', %(f)s, %(p)s, %(c)s, %(unique)s, '%(uuid)s', %(aq)s, {{%(sq)s}})"%locals()
+        return """ new Query('%(a)s', '%(m)s', '%(t)s', %(f)s, %(p)s, %(c)s, %(unique)s, '%(uuid)s', %(aq)s, %(sq)s)"""%locals()
+    
+    # this builds a ManifoldQuery object from a dict as received from javascript through its ajax request 
+    # e.g. here's what I captured from the server's output
+    # incoming POST <QueryDict: {u'query[method]': [u'slice'], u'query[fields][]': [u'slice_hrn'], u'query[timestamp]': [u'latest'], u'query[action]': [u'get']}>
+    def fill_from_dict (self, d):
+        for key in d.keys():
+            for arg in ['action', 'method', 'filters', 'fields', 'timestamp', 'params']:
+                if arg in key:
+                    # dirty hack around fields; fields must be a list
+                    if arg == 'fields': 
+                        setattr(self, arg, [d[key]])
+                    else: 
+                        setattr(self, arg, d[key])
+                    break
+
+
+
+    def analyze_subqueries(self):
+        analyzed_query = ManifoldQuery()
+        analyzed_query.uuid = self.uuid
+        analyzed_query.action = self.action
+        analyzed_query.method = self.method
+        analyzed_query.timestamp = self.timestamp
+
+        # analyse query filters
+        # filter syntax : ['key', 'oparation', 'value']
+        for filter in self.filters:
+            key = filter[0]
+            operation = filter[1]
+            value = filter[2]
+            if '.' in key:
+                method = key.split('.')[0]
+                field = key.split('.')[1]
+                if not analyzed_query.subqueries[method]:
+                    subquery = ManifoldQuery()
+                    subquery.action = self.action
+                    subquery.method = method
+                    subquery.timestamp = self.timestamp
+                    analyzed_query.subqueries[method] = subquery
+
+                analyzed_query.subqueries[method].filters.append([field, operation, value])
+            else:
+                analyzed_query.filters.append(filter)
+
+        # analyse query params
+        # params syntax : params = {'param1': value1, 'param2': value2, ...}
+        for param in self.params.keys():
+            if '.' in param:
+                method = param.split('.')[0]
+                field = param.split('.')[1]
+                if not analyzed_query.subqueries[method]:
+                    subquery = ManifoldQuery()
+                    subquery.action = self.action
+                    subquery.method = method
+                    subquery.timestamp = self.timestamp
+                    analyzed_query.subqueries[method] = subquery
+
+                analyzed_query.subqueries[method].params[field] = self.params[param]
+            else:
+                analyzed_query.params[param] = self.params[param]
+
+        # analyse query fields
+        # fields syntax: fields = [element1, element2, ....]
+        for element in self.fields:
+            if '.' in element:
+                method = element.split('.')[0]
+                field = element.split('.')[1]
+                if not analyzed_query.subqueries[method]:
+                    subquery = ManifoldQuery()
+                    subquery.action = self.action
+                    subquery.method = method
+                    subquery.timestamp = self.timestamp
+                    analyzed_query.subqueries[method] = subquery
+
+                analyzed_query.subqueries[method].fields.append(field)
+            else:
+                analyzed_query.fields.append(element)        
+
+
+        # default subqueries 
+        if analyzed_query.method == 'slice':
+            if not analyzed_query.subqueries['resource']:
+                subquery = ManifoldQuery()
+                subquery.action = self.action
+                subquery.method = method
+                subquery.timestamp = self.timestamp
+                analyzed_query.subqueries['resource'] = subquery
+
+            if not analyzed_query.subqueries['lease']:
+                subquery = ManifoldQuery()
+                subquery.action = self.action
+                subquery.method = method
+                subquery.timestamp = self.timestamp
+                analyzed_query.subqueries['lease'] = subquery
+
+
+        self.analyzed_query = analyzed_query