flywheel.fields.conditions module¶
Query constraints
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class
flywheel.fields.conditions.
Condition
[source]¶ Bases:
object
A constraint that will be applied to a query or scan
Attributes: - eq_fields : dict
Mapping of field name to field value
- fields : dict
Mapping of field name to (operator, value) tuples
- limit : int or
dynamo3.Limit
Maximum number of results
- scan_limit : int
Maximum number of items to scan in DynamoDB
- index_name : str
Name of index to use for a query
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classmethod
construct
(field, op, other)[source]¶ Create a Condition on a field
Parameters: - field : str
Name of the field to constrain
- op : str
Operator, such as ‘eq’, ‘lt’, or ‘contains’
- other : object
The value to constrain the field with
Returns: - condition :
Condition
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classmethod
construct_index
(name)[source]¶ Force the query to use a certain index
Parameters: - name : str
Returns: - condition :
Condition
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classmethod
construct_limit
(count)[source]¶ Create a condition that will limit the results to a count
Parameters: - count : int
Returns: - condition :
Condition