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 result="Q: id=%(query_uuid)s - %(action)s on %(method)s "%self.__dict__
30 result += " with %d filters, %d fields"%(len(self.filters),len(self.params))
34 query_uuid=self.query_uuid
38 f=json.dumps (self.filters)
39 p=json.dumps (self.params)
40 c=json.dumps (self.fields)
41 # xxx unique can be removed, but for now we pad the js structure
44 aq = self.analyzed_query.to_json() if self.analyzed_query else 'null'
45 # subqueries is a dictionary method:query
46 if not self.subqueries:
49 sq=", ".join ( [ "'%s':%s" % (method, subquery.to_json())
50 for (method, subquery) in self.subqueries.iteritems()])
53 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()
55 # this builds a ManifoldQuery object from a dict as received from javascript through its ajax request
56 # e.g. here's what I captured from the server's output
57 # incoming POST <QueryDict: {u'query[method]': [u'slice'], u'query[fields][]': [u'slice_hrn'], u'query[timestamp]': [u'latest'], u'query[action]': [u'get']}>
58 def fill_from_dict (self, d):
60 for arg in ['action', 'method', 'filters', 'fields', 'timestamp', 'params']:
62 # dirty hack around fields; fields must be a list
64 setattr(self, arg, [d[key]])
66 setattr(self, arg, d[key])
70 def analyze_subqueries(self):
71 analyzed_query = ManifoldQuery()
72 analyzed_query.query_uuid = self.query_uuid
73 analyzed_query.action = self.action
74 analyzed_query.method = self.method
75 analyzed_query.timestamp = self.timestamp
77 # analyse query filters
78 # filter syntax : ['key', 'oparation', 'value']
79 for filter in self.filters:
84 method = key.split('.')[0]
85 field = key.split('.')[1]
86 if not analyzed_query.subqueries[method]:
87 subquery = ManifoldQuery()
88 subquery.action = self.action
89 subquery.method = method
90 subquery.timestamp = self.timestamp
91 analyzed_query.subqueries[method] = subquery
93 analyzed_query.subqueries[method].filters.append([field, operation, value])
95 analyzed_query.filters.append(filter)
97 # analyse query params
98 # params syntax : params = {'param1': value1, 'param2': value2, ...}
99 for param in self.params.keys():
101 method = param.split('.')[0]
102 field = param.split('.')[1]
103 if not analyzed_query.subqueries[method]:
104 subquery = ManifoldQuery()
105 subquery.action = self.action
106 subquery.method = method
107 subquery.timestamp = self.timestamp
108 analyzed_query.subqueries[method] = subquery
110 analyzed_query.subqueries[method].params[field] = self.params[param]
112 analyzed_query.params[param] = self.params[param]
114 # analyse query fields
115 # fields syntax: fields = [element1, element2, ....]
116 for element in self.fields:
118 method = element.split('.')[0]
119 field = element.split('.')[1]
120 if not analyzed_query.subqueries[method]:
121 subquery = ManifoldQuery()
122 subquery.action = self.action
123 subquery.method = method
124 subquery.timestamp = self.timestamp
125 analyzed_query.subqueries[method] = subquery
127 analyzed_query.subqueries[method].fields.append(field)
129 analyzed_query.fields.append(element)
133 if analyzed_query.method == 'slice':
134 if not analyzed_query.subqueries['resource']:
135 subquery = ManifoldQuery()
136 subquery.action = self.action
137 subquery.method = method
138 subquery.timestamp = self.timestamp
139 analyzed_query.subqueries['resource'] = subquery
141 if not analyzed_query.subqueries['lease']:
142 subquery = ManifoldQuery()
143 subquery.action = self.action
144 subquery.method = method
145 subquery.timestamp = self.timestamp
146 analyzed_query.subqueries['lease'] = subquery
149 self.analyzed_query = analyzed_query