org.apache.hadoop.io
Class LongWritable

java.lang.Object
  extended by org.apache.hadoop.io.LongWritable
All Implemented Interfaces:
Comparable<LongWritable>, Writable, WritableComparable<LongWritable>

@InterfaceAudience.Public
@InterfaceStability.Stable
public class LongWritable
extends Object
implements WritableComparable<LongWritable>

A WritableComparable for longs.


Constructor Summary
LongWritable()
           
LongWritable(long value)
           
 
Method Summary
 int compareTo(LongWritable o)
          Compares two LongWritables.
 boolean equals(Object o)
          Returns true iff o is a LongWritable with the same value.
 long get()
          Return the value of this LongWritable.
 int hashCode()
           
 void readFields(DataInput in)
          Deserialize the fields of this object from in.
 void set(long value)
          Set the value of this LongWritable.
 String toString()
           
 void write(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

LongWritable

public LongWritable()

LongWritable

public LongWritable(long value)
Method Detail

set

public void set(long value)
Set the value of this LongWritable.


get

public long get()
Return the value of this LongWritable.


readFields

public void readFields(DataInput in)
                throws 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:
IOException

write

public void write(DataOutput out)
           throws 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:
IOException

equals

public boolean equals(Object o)
Returns true iff o is a LongWritable with the same value.

Overrides:
equals in class Object

hashCode

public int hashCode()
Overrides:
hashCode in class Object

compareTo

public int compareTo(LongWritable o)
Compares two LongWritables.

Specified by:
compareTo in interface Comparable<LongWritable>

toString

public String toString()
Overrides:
toString in class Object


Copyright © 2012 Apache Software Foundation. All Rights Reserved.