Package org.apache.hadoop.io

Class WritableFactories

java.lang.Object

org.apache.hadoop.io.WritableFactories

@Public
@Stable
public class WritableFactories
extends java.lang.Object

Factories for non-public writables. Defining a factory permits ObjectWritable to be able to construct instances of non-public classes.

Method Summary

Modifier and Type	Method	Description
static WritableFactory	getFactory(java.lang.Class c)	Define a factory for a class.
static Writable	newInstance(java.lang.Class<? extends Writable> c)	Create a new instance of a class with a defined factory.
static Writable	newInstance(java.lang.Class<? extends Writable> c, Configuration conf)	Create a new instance of a class with a defined factory.
static void	setFactory(java.lang.Class c, WritableFactory factory)	Define a factory for a class.

Methods inherited from class java.lang.Object

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

Method Detail

setFactory

public static void setFactory(java.lang.Class c,
                              WritableFactory factory)

Define a factory for a class.

Parameters:

c - input c.

factory - input factory.

getFactory

public static WritableFactory getFactory(java.lang.Class c)

Define a factory for a class.

Parameters:

c - input c.

Returns:

a factory for a class.

newInstance

public static Writable newInstance(java.lang.Class<? extends Writable> c,
                                   Configuration conf)

Create a new instance of a class with a defined factory.

Parameters:

c - input c.

conf - input configuration.

Returns:

a new instance of a class with a defined factory.

newInstance

public static Writable newInstance(java.lang.Class<? extends Writable> c)

Create a new instance of a class with a defined factory.

Parameters:

c - input c.

Returns:

a new instance of a class with a defined factory.