Interface for a confluently or partially persistent storing key value map. Keys (type K) might
be single object identifiers (as the variable storage case), or combined keys
(as in the live map case).
- Type Params
- K
the key type
- T
the underlying system's transaction type
- Companion
- object
Value members
Abstract methods
Finds the most recent value for an entity id with respect to version path. If a value is found,
it is return along with a suffix suitable for identifier path actualisation.
Finds the most recent value for an entity id with respect to version path. If a value is found,
it is return along with a suffix suitable for identifier path actualisation.
- Type Params
- A
the type of values stored with the entity
- Value Params
- format
the format used to store the entity's values
- key
the identifier for the object
- path
the path through which the object has been accessed (the version at which it is read)
- tx
the transaction within which the access is performed
- Returns
Noneif no value was found, otherwise aSomeof the tuple consisting of the suffix and the value. The suffix is the access path minus the prefix at which the value was found. However, the suffix overlaps the prefix in that it begins with the tree entering/exiting tuple at which the value was found.
Finds the most recent value for an entity id with respect to version path.
Finds the most recent value for an entity id with respect to version path.
The format given is _non_transactional. This is because this trait bridges confluent
and ephemeral world (it may use a durable backend, but the data structures used for
storing the confluent graph are themselves ephemeral). If the value A requires a
transactional serialization, the current approach is to pre-serialize the value into
an appropriate format (e.g. a byte array) before calling into put. In that case
the wrapping structure must be de-serialized after calling get.
- Type Params
- A
the type of values stored with the entity
- Value Params
- format
the format used to store the entity's values
- key
the identifier for the object
- path
the path through which the object has been accessed (the version at which it is read)
- tx
the transaction within which the access is performed
- Returns
Noneif no value was found, otherwise aSomeof that value.
Stores a new value for a given write path.
Stores a new value for a given write path.
The format given is _non_transactional. This is because this trait bridges confluent
and ephemeral world (it may use a durable backend, but the data structures used for
storing the confluent graph are themselves ephemeral). If the value A requires a
transactional serialization, the current approach is to pre-serialize the value into
an appropriate format (e.g. a byte array) before calling into put. In that case
the wrapping structure must be de-serialized after calling get.
- Type Params
- A
the type of values stored with the entity
- Value Params
- format
the format used to store the entity's values
- key
the identifier for the object
- path
the path through which the object has been accessed (the version at which it is read)
- tx
the transaction within which the access is performed
- value
the value to store