Class Query

Initializes this class.

The field definition is a dictionary with the field's name as a key and a tuple containing, in order, the field definition object (objects.QueryFieldDefinition, the data kind to help calling code collect data and a retrieval function. The retrieval function is called with two parameters, in order, the data container and the item in container (see Query.Query).

Users of this class can call RequestedData before preparing the data container to determine what data is needed.

Parameters:

• fieldlist (dictionary) - Field definitions
• selected (list of strings) - List of selected fields

Overrides: object.__init__

Returns all names referenced in the filter.

If there is no filter or operators are preventing determining the exact names, None is returned.

Returns the list of fields for this query.

Includes unknown fields.

Returns: List of objects.QueryFieldDefinition

Execute a query.

Parameters:

• ctx - Data container passed to field retrieval functions, must support iteration using __iter__
• sort_by_name (boolean) - Whether to sort by name or keep the input data's ordering

Query with "old" query result format.

See Query.Query for arguments.