net.openhft.chronicle.hash

Interface ExternalHashQueryContext<K>

Type Parameters:

K - the hash key type

All Superinterfaces:

AutoCloseable, HashContext<K>, HashQueryContext<K>, InterProcessReadWriteUpdateLock, ReadWriteLock, SegmentLock

All Known Subinterfaces:

ExternalMapQueryContext<K,V,R>, ExternalSetQueryContext<K,R>

public interface ExternalHashQueryContext<K>
extends HashQueryContext<K>, AutoCloseable

HashQueryContext + AutoCloseable, for external ChronicleHash queries in try-with-resources blocks.

See Also:

ChronicleHash.queryContext(Object)

Method Summary

Modifier and Type	Method and Description
void	close() Closes the query context, automatically releases all locks and disposes all resources, acquired during the query operation.

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

absentEntry, entry, queriedKey, segmentIndex

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

hash

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

readLock, updateLock, writeLock

Method Detail

close

void close()

Closes the query context, automatically releases all locks and disposes all resources, acquired during the query operation. I. e. you shouldn't release locks manually in the end of try-with-resources statement:

 try (ExternalHashQueryContext<K> q = hash.queryContext(key))
     q.writeLock().lock();
     // ...make a query under exclusive lock
     // NOT NEEDED - q.readLock().unlock();
 }

Specified by:

close in interface AutoCloseable