Package io.quarkus.redis.datasource.hyperloglog

Interface HyperLogLogCommands<K,V>

Type Parameters:

K - the type of the key

V - the type of the value stored in the sets

All Superinterfaces:

RedisCommands

All Known Implementing Classes:

BlockingHyperLogLogCommandsImpl

public interface HyperLogLogCommands<K,V>
extends RedisCommands

Allows executing commands from the hyperloglog group. See the hyperloglog command list for further information about these commands.

Method Summary

Modifier and Type	Method	Description
boolean	pfadd(K key, V... values)	Execute the command PFADD.
long	pfcount(K... keys)	Execute the command PFCOUNT.
void	pfmerge(K destkey, K... sourcekeys)	Execute the command PFMERGE.

Methods inherited from interface io.quarkus.redis.datasource.RedisCommands

getDataSource

Method Detail

pfadd

boolean pfadd(K key,
              V... values)

Execute the command PFADD. Summary: Adds the specified elements to the specified HyperLogLog. Group: hyperloglog Requires Redis 2.8.9

Parameters:

key - the key

values - the values

Returns:

true at least 1 HyperLogLog internal register was altered. false otherwise.

pfmerge

void pfmerge(K destkey,
             K... sourcekeys)

Execute the command PFMERGE. Summary: Merge N different HyperLogLogs into a single one. Group: hyperloglog Requires Redis 2.8.9

Parameters:

destkey - the key

sourcekeys - the source keys

pfcount

long pfcount(K... keys)

Execute the command PFCOUNT. Summary: Return the approximated cardinality of the set(s) observed by the HyperLogLog at key(s). Group: hyperloglog Requires Redis 2.8.9

Returns:

The approximated number of unique elements observed via PFADD.