- table_f = '%s$%s' % (self.collection.table_name, k)
- if type(v) in (int, float):
- field_name = 'number'
- field_v = v
- else:
- field_name = 'value'
- field_v = msgpack.dumps(v)
- if k == '_id':
- field_q = (table_id, field_name)
- else:
- field_q = self._get_cursor_field(table_id, table_f, field_name=field_name)
- query['where'].append((field_q, '=', field_v))
-
- return self.collection.database.connection._get_cursor(self.collection.database.db_name, query)
-
- def _get_cursor_field(self, table_id, table_field, field_name='value'):
- return {
- 'select': [(table_field, field_name)],
- 'from': [table_field],
- 'where': [((table_field, 'id'), '=', (table_id, 'id'))],
- }
+ constraints.append(self._get_cursor_constraint(k, v))
+
+ query = self.Query(fields, tables, constraints)
+ return self.collection.database.connection._get_cursor(query)
+
+ def _get_cursor_field(self, field_name):
+ table_id = self.Table(self.collection.database.db_name, '%s$_id' % self.collection.table_name)
+ table_field = self.Table(self.collection.database.db_name, '%s$%s' % (self.collection.table_name, field_name.split(".")[0]))
+
+ fields = [self.Field(table_field, 'value')]
+ tables = [table_field]
+ constraints = [
+ self.Constraint('=', self.Field(table_field, 'id'), self.Field(table_id, 'id')),
+ self.Constraint('=', self.Field(table_field, 'name'), self.Literal(field_name)),
+ ]
+ return self.Query(fields, tables, constraints)
+
+ def _get_cursor_constraint(self, field_name, field_value):
+ table_id = self.Table(self.collection.database.db_name, '%s$_id' % self.collection.table_name)
+ table_field = self.Table(self.collection.database.db_name, '%s$%s' % (self.collection.table_name, field_name.split(".")[0]))
+
+ if type(field_value) in (int, float):
+ field_type = 'number'
+ else:
+ field_type = 'value'
+ field_value = msgpack.dumps(field_value)
+
+ fields = [self.Field(table_field, 'id')]
+ tables = [table_field]
+ constraints = [
+ self.Constraint('or', self.Constraint('=', self.Field(table_field, 'name'), self.Literal(field_name)),
+ self.Constraint('starts', self.Field(table_field, 'name'), self.Literal('%s..' % field_name))),
+ self.Constraint('=', self.Field(table_field, field_type), self.Literal(field_value)),
+ ]
+
+ return self.Constraint('in', self.Field(table_id, 'id'), self.Query(fields, tables, constraints))