org.apache.hadoop.hbase.io
Class HbaseMapWritable

java.lang.Object
  org.apache.hadoop.hbase.io.HbaseMapWritable

All Implemented Interfaces:

Map<Writable,Writable>, Configurable, Writable

public class HbaseMapWritable
extends Object
implements Map<Writable,Writable>, Writable, Configurable

A Writable Map. Like MapWritable but dumb. It will fail if passed a Writable it has not already been told about. Its also been primed with hbase Writables.

Nested Class Summary

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

Map.Entry<K,V>

Constructor Summary

HbaseMapWritable()
Default constructor.

Method Summary

void	clear()
boolean	containsKey(Object key)
boolean	containsValue(Object value)
Set<Map.Entry<Writable,Writable>>	entrySet()
Writable	get(Object key)
protected Class<?>	getClass(byte id)
Configuration	getConf() Return the configuration used by this object.
protected byte	getId(Class<?> clazz)
boolean	isEmpty()
Set<Writable>	keySet()
Writable	put(Writable key, Writable value)
void	putAll(Map<? extends Writable,? extends Writable> t)
void	readFields(DataInput in) Deserialize the fields of this object from in.
Writable	remove(Object key)
void	setConf(Configuration conf) Set the configuration to be used by this object.
int	size()
Collection<Writable>	values()
void	write(DataOutput out) Serialize the fields of this object to out.

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

HbaseMapWritable

public HbaseMapWritable()

Default constructor.

Method Detail

getConf

public Configuration getConf()

Description copied from interface: Configurable

Return the configuration used by this object.

Specified by:

getConf in interface Configurable

Returns:

the conf

setConf

public void setConf(Configuration conf)

Description copied from interface: Configurable

Set the configuration to be used by this object.

Specified by:

setConf in interface Configurable

Parameters:

conf - the conf to set

clear

public void clear()

Specified by:

clear in interface Map<Writable,Writable>

containsKey

public boolean containsKey(Object key)

Specified by:

containsKey in interface Map<Writable,Writable>

containsValue

public boolean containsValue(Object value)

Specified by:

containsValue in interface Map<Writable,Writable>

entrySet

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

Specified by:

entrySet in interface Map<Writable,Writable>

get

public Writable get(Object key)

Specified by:

get in interface Map<Writable,Writable>

isEmpty

public boolean isEmpty()

Specified by:

isEmpty in interface Map<Writable,Writable>

keySet

public Set<Writable> keySet()

Specified by:

keySet in interface Map<Writable,Writable>

put

public Writable put(Writable key,
                    Writable value)

Specified by:

put in interface Map<Writable,Writable>

putAll

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

Specified by:

putAll in interface Map<Writable,Writable>

remove

public Writable remove(Object key)

Specified by:

remove in interface Map<Writable,Writable>

size

public int size()

Specified by:

size in interface Map<Writable,Writable>

values

public Collection<Writable> values()

Specified by:

values in interface Map<Writable,Writable>

getClass

protected Class<?> getClass(byte id)

Returns:

the Class class for the specified id

getId

protected byte getId(Class<?> clazz)

Returns:

the id for the specified Class

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

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