net.openhft.chronicle.map

Interface MapAbsentEntry<K,V>

Type Parameters:

K - type of the key in ChronicleMap

V - type of the value in ChronicleMap

All Superinterfaces:

HashAbsentEntry<K>

public interface MapAbsentEntry<K,V>
extends HashAbsentEntry<K>

Low-level operational context for the situations, when the new entry is going to be inserted into the ChronicleMap.

See Also:

MapEntryOperations, MapQueryContext.absentEntry()

Method Summary

Modifier and Type	Method and Description
MapContext<K,V,?>	context() Returns the context, in which the entry is going to be inserted into the hash.
Data<V>	defaultValue() Returns the default (or nil) value, that should be inserted into the map in this context.
void	doInsert(Data<V> value) Inserts the new entry into the map, of the key and the given value.

Methods inherited from interface net.openhft.chronicle.hash.HashAbsentEntry

absentKey

Method Detail

context

@NotNull
MapContext<K,V,?> context()

Description copied from interface: HashAbsentEntry

Returns the context, in which the entry is going to be inserted into the hash.

Specified by:

context in interface HashAbsentEntry<K>

doInsert

void doInsert(Data<V> value)

Inserts the new entry into the map, of the key and the given value.

This method is the default implementation for MapEntryOperations.insert( MapAbsentEntry, Data), which might be customized over the default.

Parameters:

value - the value to insert into the map along with the key

Throws:

IllegalStateException - if some locking/state conditions required to perform insertion operation are not met

See Also:

MapEntryOperations.insert(MapAbsentEntry, Data)

defaultValue

@NotNull
Data<V> defaultValue()

Returns the default (or nil) value, that should be inserted into the map in this context. This is primarily used in ChronicleMap.acquireUsing(K, V) operation implementation, i. e. MapMethods.acquireUsing(net.openhft.chronicle.map.MapQueryContext<K, V, R>, net.openhft.chronicle.map.ReturnValue<V>).

This method if the default implementation for DefaultValueProvider.defaultValue(MapAbsentEntry), which might be customized over the default.

See Also:

DefaultValueProvider.defaultValue(MapAbsentEntry)