pip_services3_components.state.NullStateStore module
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class
pip_services3_components.state.NullStateStore.
NullStateStore
Bases:
pip_services3_components.state.IStateStore.IStateStore
Dummy state store implementation that doesn’t do anything.
It can be used in testing or in situations when state management is not required but shall be disabled.
See:
ICache
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delete
(correlation_id: Optional[str], key: str) → Any Deletes a state from the store by its key.
- Parameters
correlation_id – (optional) transaction id to trace execution through call chain.
key – a unique value key.
- Returns
deleted item
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load
(correlation_id: Optional[str], key: str) → Any Loads state from the store using its key. If value is missing in the stored it returns None.
- Parameters
correlation_id – (optional) transaction id to trace execution through call chain.
key – a unique state key.
- Returns
the state value or None if value wasn’t found.
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load_bulk
(correlation_id: Optional[str], keys: List[str]) → List[pip_services3_components.state.StateValue.StateValue] Loads an array of states from the store using their keys.
- Parameters
correlation_id – (optional) transaction id to trace execution through call chain.
keys – unique state keys.
- Returns
an array with state values and their corresponding keys.
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