org.apache.geode.cache.query

Interface Aggregator

public interface Aggregator

Behavior of a user-defined aggregator. Aggregates values and returns a result. In addition to the methods in the interface, implementing classes must have a 0-arg public constructor.

Method Summary

Modifier and Type	Method and Description
void	accumulate(java.lang.Object value) Accumulate the next scalar value
void	init() Initialize the Aggregator
java.lang.Object	terminate()

Method Detail

accumulate

void accumulate(java.lang.Object value)

Accumulate the next scalar value

Parameters:

value -

init

void init()

Initialize the Aggregator

terminate

java.lang.Object terminate()

Returns:

Return the result scalar value