unipg.gila.common.datastructures

Class SetWritable<P extends org.apache.hadoop.io.Writable>

java.lang.Object

unipg.gila.common.datastructures.SetWritable<P>

Type Parameters:

P - The class of the object contained in the set. Must implement Writable.

All Implemented Interfaces:

org.apache.hadoop.io.Writable

Direct Known Subclasses:

LongWritableSet

public abstract class SetWritable<P extends org.apache.hadoop.io.Writable>
extends java.lang.Object
implements org.apache.hadoop.io.Writable

Abstract implementation of a Set implementing the Writable (org.apache.hadoop.io.Writable) interface. Needs to be extended to support specific type of objects.

Author:

Alessio Arleo

Field Summary

Fields

Modifier and Type	Field and Description
protected java.util.Set<P>	internalState

Constructor Summary

Constructors

Constructor and Description
SetWritable()

Method Summary

Methods

Modifier and Type	Method and Description
void	addAll(java.util.Collection<P> it)
void	addElement(P element)
boolean	contains(org.apache.hadoop.io.Writable key)
java.util.Set<P>	get()
java.util.Iterator<? extends org.apache.hadoop.io.Writable>	iterator()
void	readFields(java.io.DataInput in)
boolean	remove(org.apache.hadoop.io.Writable elementToRemove)
void	reset()
int	size()
protected abstract P	specificRead(java.io.DataInput in) This method is used to let the subclasses properly deserialize the data from the DataInput.
void	write(java.io.DataOutput out)

Methods inherited from class java.lang.Object

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

Field Detail

internalState

protected java.util.Set<P extends org.apache.hadoop.io.Writable> internalState

Constructor Detail

SetWritable

public SetWritable()

Method Detail

addAll

public void addAll(java.util.Collection<P> it)

addElement

public void addElement(P element)

contains

public boolean contains(org.apache.hadoop.io.Writable key)

get

public java.util.Set<P> get()

iterator

public java.util.Iterator<? extends org.apache.hadoop.io.Writable> iterator()

readFields

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

Specified by:

readFields in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException

remove

public boolean remove(org.apache.hadoop.io.Writable elementToRemove)

reset

public void reset()

size

public int size()

specificRead

protected abstract P specificRead(java.io.DataInput in)
                                                                 throws java.io.IOException

This method is used to let the subclasses properly deserialize the data from the DataInput.

Parameters:

in - The DataInput object from which read the data.

Throws:

java.io.IOException

write

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

Specified by:

write in interface org.apache.hadoop.io.Writable

Throws:

java.io.IOException