org.apache.hadoop.io
Class WritableName

java.lang.Object
  org.apache.hadoop.io.WritableName

public class WritableName
extends Object

Utility to permit renaming of Writable implementation classes without invalidiating files that contain their class name.

Author:

Doug Cutting

Method Summary

static void	addName(Class writableClass, String name) Add an alternate name for a class.
static Class	getClass(String name, Configuration conf) Return the class for a name.
static String	getName(Class writableClass) Return the name for a class.
static void	setName(Class writableClass, String name) Set the name that a class should be known as to something other than the class name.

Methods inherited from class java.lang.Object

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

Method Detail

setName

public static void setName(Class writableClass,
                           String name)

Set the name that a class should be known as to something other than the class name.

addName

public static void addName(Class writableClass,
                           String name)

Add an alternate name for a class.

getName

public static String getName(Class writableClass)

Return the name for a class. Default is Class.getName().

getClass

public static Class getClass(String name,
                             Configuration conf)
                      throws IOException

Return the class for a name. Default is Class.forName(String).

Throws:

IOException