5 return uuid.uuid4().hex
9 def __init__ (self, action=None, method=None, timestamp='now',
10 filters=[], params=[], fields=[],
11 sort=None, limit=None, offset=None,
13 self.query_uuid=uniqid()
17 self.timestamp=timestamp
25 self.analyzed_query=None
29 query_uuid=self.query_uuid
33 f=json.dumps (self.filters)
34 p=json.dumps (self.params)
35 c=json.dumps (self.fields)
36 # xxx unique can be removed, but for now we pad the js structure
39 aq = self.analyzed_query.to_json() if self.analyzed_query else 'null'
40 # subqueries is a dictionary method:query
41 if not self.subqueries:
44 sq=", ".join ( [ "'%s':%s" % (method, subquery.to_json())
45 for (method, subquery) in self.subqueries.iteritems()])
48 return """ new ManifoldQuery('%(a)s', '%(m)s', '%(t)s', %(f)s, %(p)s, %(c)s, %(unique)s, '%(query_uuid)s', %(aq)s, %(sq)s)"""%locals()
50 # this builds a ManifoldQuery object from a dict as received from javascript through its ajax request
51 # e.g. here's what I captured from the server's output
52 # incoming POST <QueryDict: {u'query[method]': [u'slice'], u'query[fields][]': [u'slice_hrn'], u'query[timestamp]': [u'latest'], u'query[action]': [u'get']}>
53 def fill_from_dict (self, d):
55 for arg in ['action', 'method', 'filters', 'fields', 'timestamp', 'params']:
57 # dirty hack around fields; fields must be a list
59 setattr(self, arg, [d[key]])
61 setattr(self, arg, d[key])
66 def analyze_subqueries(self):
67 analyzed_query = ManifoldQuery()
68 analyzed_query.query_uuid = self.query_uuid
69 analyzed_query.action = self.action
70 analyzed_query.method = self.method
71 analyzed_query.timestamp = self.timestamp
73 # analyse query filters
74 # filter syntax : ['key', 'oparation', 'value']
75 for filter in self.filters:
80 method = key.split('.')[0]
81 field = key.split('.')[1]
82 if not analyzed_query.subqueries[method]:
83 subquery = ManifoldQuery()
84 subquery.action = self.action
85 subquery.method = method
86 subquery.timestamp = self.timestamp
87 analyzed_query.subqueries[method] = subquery
89 analyzed_query.subqueries[method].filters.append([field, operation, value])
91 analyzed_query.filters.append(filter)
93 # analyse query params
94 # params syntax : params = {'param1': value1, 'param2': value2, ...}
95 for param in self.params.keys():
97 method = param.split('.')[0]
98 field = param.split('.')[1]
99 if not analyzed_query.subqueries[method]:
100 subquery = ManifoldQuery()
101 subquery.action = self.action
102 subquery.method = method
103 subquery.timestamp = self.timestamp
104 analyzed_query.subqueries[method] = subquery
106 analyzed_query.subqueries[method].params[field] = self.params[param]
108 analyzed_query.params[param] = self.params[param]
110 # analyse query fields
111 # fields syntax: fields = [element1, element2, ....]
112 for element in self.fields:
114 method = element.split('.')[0]
115 field = element.split('.')[1]
116 if not analyzed_query.subqueries[method]:
117 subquery = ManifoldQuery()
118 subquery.action = self.action
119 subquery.method = method
120 subquery.timestamp = self.timestamp
121 analyzed_query.subqueries[method] = subquery
123 analyzed_query.subqueries[method].fields.append(field)
125 analyzed_query.fields.append(element)
129 if analyzed_query.method == 'slice':
130 if not analyzed_query.subqueries['resource']:
131 subquery = ManifoldQuery()
132 subquery.action = self.action
133 subquery.method = method
134 subquery.timestamp = self.timestamp
135 analyzed_query.subqueries['resource'] = subquery
137 if not analyzed_query.subqueries['lease']:
138 subquery = ManifoldQuery()
139 subquery.action = self.action
140 subquery.method = method
141 subquery.timestamp = self.timestamp
142 analyzed_query.subqueries['lease'] = subquery
145 self.analyzed_query = analyzed_query