org.apache.ignite.internal.util.lang.gridfunc

Class IntSumReducer

java.lang.Object

org.apache.ignite.internal.util.lang.gridfunc.IntSumReducer

All Implemented Interfaces:

Serializable, IgniteReducer<Integer,Integer>

public class IntSumReducer
extends Object
implements IgniteReducer<Integer,Integer>

Reducer that calculates sum of integer elements.

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
IntSumReducer()

Method Summary

Methods

Modifier and Type	Method and Description
boolean	collect(Integer e) Collects given value.
Integer	reduce() Reduces collected values into one.
String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

IntSumReducer

public IntSumReducer()

Method Detail

collect

public boolean collect(Integer e)

Collects given value. If this method returns false then IgniteReducer.reduce() will be called right away. Otherwise caller will continue collecting until all values are processed.

Specified by:

collect in interface IgniteReducer<Integer,Integer>

Parameters:

e - Value to collect.

Returns:

true to continue collecting, false to instruct caller to stop collecting and call IgniteReducer.reduce() method.

reduce

public Integer reduce()

Reduces collected values into one.

Specified by:

reduce in interface IgniteReducer<Integer,Integer>

Returns:

Reduced value.

toString

public String toString()

Overrides:

toString in class Object