org.elasticsearch.hadoop.mr

Class LinkedMapWritable

java.lang.Object

org.apache.hadoop.io.AbstractMapWritable

org.apache.hadoop.io.MapWritable

org.elasticsearch.hadoop.mr.LinkedMapWritable

All Implemented Interfaces:

java.util.Map<Writable,Writable>, Configurable, Writable

public class LinkedMapWritable
extends MapWritable

Similar to MapWritable expect that it uses a LinkedHashMap underneath to preserve insertion order (and thus its structure). Extends MapWritable for compatibility reasons.

Nested Class Summary

Nested classes/interfaces inherited from interface java.util.Map

java.util.Map.Entry<K,V>

Constructor Summary

Constructors

Constructor and Description
LinkedMapWritable() Default constructor.
LinkedMapWritable(MapWritable other) Copy constructor.

Method Summary

Modifier and Type	Method and Description
void	clear()
boolean	containsKey(java.lang.Object key)
boolean	containsValue(java.lang.Object value)
java.util.Set<java.util.Map.Entry<Writable,Writable>>	entrySet()
boolean	equals(java.lang.Object o)
Writable	get(java.lang.Object key)
int	hashCode()
boolean	isEmpty()
java.util.Set<Writable>	keySet()
Writable	put(Writable key, Writable value)
void	putAll(java.util.Map<? extends Writable,? extends Writable> t)
void	readFields(java.io.DataInput in)
Writable	remove(java.lang.Object key)
int	size()
java.lang.String	toString()
java.util.Collection<Writable>	values()
void	write(java.io.DataOutput out)

Methods inherited from class org.apache.hadoop.io.AbstractMapWritable

addToMap, copy, getClass, getConf, getId, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

compute, computeIfAbsent, computeIfPresent, forEach, getOrDefault, merge, putIfAbsent, remove, replace, replace, replaceAll

Constructor Detail

LinkedMapWritable

public LinkedMapWritable()

Default constructor.

LinkedMapWritable

public LinkedMapWritable(MapWritable other)

Copy constructor.

Parameters:

other - the map to copy from

Method Detail

clear

public void clear()

Specified by:

clear in interface java.util.Map<Writable,Writable>

Overrides:

clear in class MapWritable

containsKey

public boolean containsKey(java.lang.Object key)

Specified by:

containsKey in interface java.util.Map<Writable,Writable>

Overrides:

containsKey in class MapWritable

containsValue

public boolean containsValue(java.lang.Object value)

Specified by:

containsValue in interface java.util.Map<Writable,Writable>

Overrides:

containsValue in class MapWritable

entrySet

public java.util.Set<java.util.Map.Entry<Writable,Writable>> entrySet()

Specified by:

entrySet in interface java.util.Map<Writable,Writable>

Overrides:

entrySet in class MapWritable

get

public Writable get(java.lang.Object key)

Specified by:

get in interface java.util.Map<Writable,Writable>

Overrides:

get in class MapWritable

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface java.util.Map<Writable,Writable>

Overrides:

isEmpty in class MapWritable

keySet

public java.util.Set<Writable> keySet()

Specified by:

keySet in interface java.util.Map<Writable,Writable>

Overrides:

keySet in class MapWritable

put

public Writable put(Writable key,
                    Writable value)

Specified by:

put in interface java.util.Map<Writable,Writable>

Overrides:

put in class MapWritable

putAll

public void putAll(java.util.Map<? extends Writable,? extends Writable> t)

Specified by:

putAll in interface java.util.Map<Writable,Writable>

Overrides:

putAll in class MapWritable

remove

public Writable remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<Writable,Writable>

Overrides:

remove in class MapWritable

size

public int size()

Specified by:

size in interface java.util.Map<Writable,Writable>

Overrides:

size in class MapWritable

values

public java.util.Collection<Writable> values()

Specified by:

values in interface java.util.Map<Writable,Writable>

Overrides:

values in class MapWritable

write

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

Specified by:

write in interface Writable

Overrides:

write in class MapWritable

Throws:

java.io.IOException

readFields

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

Specified by:

readFields in interface Writable

Overrides:

readFields in class MapWritable

Throws:

java.io.IOException

equals

public boolean equals(java.lang.Object o)

Specified by:

equals in interface java.util.Map<Writable,Writable>

Overrides:

equals in class java.lang.Object

hashCode

public int hashCode()

Specified by:

hashCode in interface java.util.Map<Writable,Writable>

Overrides:

hashCode in class java.lang.Object

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object