org.apache.hadoop.io
Class SortedMapWritable

java.lang.Object
  org.apache.hadoop.io.AbstractMapWritable
      org.apache.hadoop.io.SortedMapWritable

All Implemented Interfaces:

Map<WritableComparable,Writable>, SortedMap<WritableComparable,Writable>, Configurable, Writable

@InterfaceAudience.Public
@InterfaceStability.Stable
public class SortedMapWritable
extends AbstractMapWritable
implements SortedMap<WritableComparable,Writable>

A Writable SortedMap.

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

SortedMapWritable()
default constructor.

SortedMapWritable(SortedMapWritable other)
Copy constructor.

Method Summary

void	clear()
Comparator<? super WritableComparable>	comparator()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<WritableComparable,Writable>>	entrySet()
WritableComparable	firstKey()
Writable	get(Object key)
SortedMap<WritableComparable,Writable>	headMap(WritableComparable toKey)
boolean	isEmpty()
Set<WritableComparable>	keySet()
WritableComparable	lastKey()
Writable	put(WritableComparable key, Writable value)
void	putAll(Map<? extends WritableComparable,? extends Writable> t)
void	readFields(DataInput in) Deserialize the fields of this object from in.
Writable	remove(Object key)
int	size()
SortedMap<WritableComparable,Writable>	subMap(WritableComparable fromKey, WritableComparable toKey)
SortedMap<WritableComparable,Writable>	tailMap(WritableComparable fromKey)
Collection<Writable>	values()
void	write(DataOutput out) Serialize the fields of this object to out.

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

addToMap, copy, getClass, getConf, getId, setConf

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

SortedMapWritable

public SortedMapWritable()

default constructor.

SortedMapWritable

public SortedMapWritable(SortedMapWritable other)

Copy constructor.

Parameters:

other - the map to copy from

Method Detail

comparator

public Comparator<? super WritableComparable> comparator()

Specified by:

comparator in interface SortedMap<WritableComparable,Writable>

firstKey

public WritableComparable firstKey()

Specified by:

firstKey in interface SortedMap<WritableComparable,Writable>

headMap

public SortedMap<WritableComparable,Writable> headMap(WritableComparable toKey)

Specified by:

headMap in interface SortedMap<WritableComparable,Writable>

lastKey

public WritableComparable lastKey()

Specified by:

lastKey in interface SortedMap<WritableComparable,Writable>

subMap

public SortedMap<WritableComparable,Writable> subMap(WritableComparable fromKey,
                                                     WritableComparable toKey)

Specified by:

subMap in interface SortedMap<WritableComparable,Writable>

tailMap

public SortedMap<WritableComparable,Writable> tailMap(WritableComparable fromKey)

Specified by:

tailMap in interface SortedMap<WritableComparable,Writable>

clear

public void clear()

Specified by:

clear in interface Map<WritableComparable,Writable>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<WritableComparable,Writable>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<WritableComparable,Writable>

entrySet

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

Specified by:

entrySet in interface Map<WritableComparable,Writable>

Specified by:

entrySet in interface SortedMap<WritableComparable,Writable>

get

public Writable get(Object key)

Specified by:

get in interface Map<WritableComparable,Writable>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<WritableComparable,Writable>

keySet

public Set<WritableComparable> keySet()

Specified by:

keySet in interface Map<WritableComparable,Writable>

Specified by:

keySet in interface SortedMap<WritableComparable,Writable>

put

public Writable put(WritableComparable key,
                    Writable value)

Specified by:

put in interface Map<WritableComparable,Writable>

putAll

public void putAll(Map<? extends WritableComparable,? extends Writable> t)

Specified by:

putAll in interface Map<WritableComparable,Writable>

remove

public Writable remove(Object key)

Specified by:

remove in interface Map<WritableComparable,Writable>

size

public int size()

Specified by:

size in interface Map<WritableComparable,Writable>

values

public Collection<Writable> values()

Specified by:

values in interface Map<WritableComparable,Writable>

Specified by:

values in interface SortedMap<WritableComparable,Writable>

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

Overrides:

readFields in class AbstractMapWritable

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

Overrides:

write in class AbstractMapWritable

Parameters:

out - DataOuput to serialize this object into.

Throws:

IOException