com.google.appengine.tools.mapreduce.inputs

Class NoInput<I>

java.lang.Object

com.google.appengine.tools.mapreduce.Input<I>

com.google.appengine.tools.mapreduce.inputs.NoInput<I>

Type Parameters:

I - the type of input values formally (but not actually) produced by this input

All Implemented Interfaces:

Serializable

public final class NoInput<I>
extends Input<I>

An Input that does not produce any values.

Author:

ohler@google.com (Christian Ohler)

See Also:

Serialized Form

Constructor Summary

Constructors

Constructor and Description
NoInput(int numShards)

Method Summary

Methods

Modifier and Type	Method and Description
static <I> NoInput<I>	create(int numShards)
List<? extends InputReader<I>>	createReaders() Returns a list of readers for this input.

Methods inherited from class com.google.appengine.tools.mapreduce.Input

getContext

Methods inherited from class java.lang.Object

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

Constructor Detail

NoInput

public NoInput(int numShards)

Method Detail

create

public static <I> NoInput<I> create(int numShards)

createReaders

public List<? extends InputReader<I>> createReaders()

Description copied from class: Input

Returns a list of readers for this input. It is the Input's responsibility to determine an appropriate number of readers to split into. This could be specified by the user or determined algorithmically. The number of input readers returned determines the number of map shards.

Specified by:

createReaders in class Input<I>