org.apache.cassandra.cql3.functions

Interface AggregateFunction.Aggregate

Enclosing interface:

AggregateFunction

public static interface AggregateFunction.Aggregate

An aggregation operation.

Method Summary

Modifier and Type	Method and Description
void	addInput(int protocolVersion, java.util.List<java.nio.ByteBuffer> values) Adds the specified input to this aggregate.
java.nio.ByteBuffer	compute(int protocolVersion) Computes and returns the aggregate current value.
void	reset() Reset this aggregate.

Method Detail

addInput

void addInput(int protocolVersion,
              java.util.List<java.nio.ByteBuffer> values)
       throws InvalidRequestException

Adds the specified input to this aggregate.

Parameters:

protocolVersion - native protocol version

values - the values to add to the aggregate.

Throws:

InvalidRequestException

compute

java.nio.ByteBuffer compute(int protocolVersion)
                     throws InvalidRequestException

Computes and returns the aggregate current value.

Parameters:

protocolVersion - native protocol version

Returns:

the aggregate current value.

Throws:

InvalidRequestException

reset

void reset()

Reset this aggregate.