org.apache.hadoop.io

Class ArrayWritable

java.lang.Object

org.apache.hadoop.io.ArrayWritable

All Implemented Interfaces:

Writable

public class ArrayWritable
extends Object
implements Writable

A Writable for arrays containing instances of a class.

Constructor Summary

Constructors

Constructor and Description
ArrayWritable()
ArrayWritable(Class valueClass)
ArrayWritable(Class valueClass, Writable[] values)
ArrayWritable(String[] strings)

Method Summary

Modifier and Type	Method and Description
Writable[]	get()
Class	getValueClass()
void	readFields(DataInput in) Reads the fields of this object from in.
void	set(Writable[] values)
void	setValueClass(Class valueClass)
Object	toArray()
String[]	toStrings()
void	write(DataOutput out) Writes the fields of this object to out.

Methods inherited from class java.lang.Object

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

Constructor Detail

ArrayWritable

public ArrayWritable()

ArrayWritable

public ArrayWritable(Class valueClass)

ArrayWritable

public ArrayWritable(Class valueClass,
                     Writable[] values)

ArrayWritable

public ArrayWritable(String[] strings)

Method Detail

setValueClass

public void setValueClass(Class valueClass)

getValueClass

public Class getValueClass()

toStrings

public String[] toStrings()

toArray

public Object toArray()

set

public void set(Writable[] values)

get

public Writable[] get()

readFields

public void readFields(DataInput in)
                throws IOException

Description copied from interface: Writable

Reads the fields of this object from in. For efficiency, implementations should attempt to re-use storage in the existing object where possible.

Specified by:

readFields in interface Writable

Throws:

IOException

write

public void write(DataOutput out)
           throws IOException

Description copied from interface: Writable

Writes the fields of this object to out.

Specified by:

write in interface Writable

Throws:

IOException