Package org.apache.hadoop.io

Class DoubleWritable

java.lang.Object

org.apache.hadoop.io.DoubleWritable

All Implemented Interfaces:

java.lang.Comparable<DoubleWritable>, Writable, WritableComparable<DoubleWritable>

@Public
@Stable
public class DoubleWritable
extends java.lang.Object
implements WritableComparable<DoubleWritable>

Writable for Double values.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static class	DoubleWritable.Comparator	A Comparator optimized for DoubleWritable.

Constructor Summary

Constructors

Constructor	Description
DoubleWritable()
DoubleWritable(double value)

Method Summary

Modifier and Type	Method	Description
int	compareTo(DoubleWritable o)
boolean	equals(java.lang.Object o)	Returns true iff o is a DoubleWritable with the same value.
double	get()
int	hashCode()
void	readFields(java.io.DataInput in)	Deserialize the fields of this object from in.
void	set(double value)
java.lang.String	toString()
void	write(java.io.DataOutput out)	Serialize the fields of this object to out.

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

DoubleWritable

public DoubleWritable()

DoubleWritable

public DoubleWritable(double value)

Method Detail

readFields

public void readFields(java.io.DataInput in)
                throws java.io.IOException

Description copied from interface: Writable

Deserialize 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

Parameters:

in - DataInput to deseriablize this object from.

Throws:

java.io.IOException - any other problem for readFields.

write

public void write(java.io.DataOutput out)
           throws java.io.IOException

Description copied from interface: Writable

Serialize the fields of this object to out.

Specified by:

write in interface Writable

Parameters:

out - DataOuput to serialize this object into.

Throws:

java.io.IOException - any other problem for write.

set

public void set(double value)

get

public double get()

equals

public boolean equals(java.lang.Object o)

Returns true iff o is a DoubleWritable with the same value.

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

compareTo

public int compareTo(DoubleWritable o)

Specified by:

compareTo in interface java.lang.Comparable<DoubleWritable>

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object