net.openhft.chronicle.map

Interface MapQueryContext<K,V,R>

Type Parameters:

K - the map key type

V - the map value type

R - the return type of MapEntryOperations specialized for the queried map

All Superinterfaces:

DefaultValueProvider<K,V>, HashContext<K>, HashQueryContext<K>, InterProcessReadWriteUpdateLock, MapContext<K,V,R>, MapEntryOperations<K,V,R>, ReadWriteLock, SegmentLock

All Known Subinterfaces:

ExternalMapQueryContext<K,V,R>

public interface MapQueryContext<K,V,R>
extends HashQueryContext<K>, MapContext<K,V,R>

A context of ChronicleMap operations with individual keys (like during get(), put(), etc., opposed to bulk operations). This is the main context type of MapMethods and MapRemoteOperations.

See Also:

ChronicleHash.queryContext(Object)

Method Summary

Modifier and Type	Method and Description
MapAbsentEntry<K,V>	absentEntry() Returns the special absent entry object, if the entry with the queried key is absent in the hash, returns null, if the entry is present.
MapEntry<K,V>	entry() Returns the entry context, if the entry with the queried key is present in the ChronicleHash, returns null is the entry is absent.

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

queriedKey, segmentIndex

Methods inherited from interface net.openhft.chronicle.hash.locks.InterProcessReadWriteUpdateLock

readLock, updateLock, writeLock

Methods inherited from interface net.openhft.chronicle.map.MapContext

hash, map, wrapValueAsData, wrapValueBytesAsData

Methods inherited from interface net.openhft.chronicle.map.MapEntryOperations

insert, remove, replaceValue

Methods inherited from interface net.openhft.chronicle.map.DefaultValueProvider

defaultValue

Method Detail

entry

@Nullable
MapEntry<K,V> entry()

Description copied from interface: HashQueryContext

Returns the entry context, if the entry with the queried key is present in the ChronicleHash, returns null is the entry is absent.

Specified by:

entry in interface HashQueryContext<K>

absentEntry

@Nullable
MapAbsentEntry<K,V> absentEntry()

Description copied from interface: HashQueryContext

Returns the special absent entry object, if the entry with the queried key is absent in the hash, returns null, if the entry is present.

Specified by:

absentEntry in interface HashQueryContext<K>