org.apache.hadoop.hbase.io
Class HbaseMapWritable<K,V>

java.lang.Object
  extended by org.apache.hadoop.hbase.io.HbaseMapWritable<K,V>
All Implemented Interfaces:
Map<byte[],V>, SortedMap<byte[],V>, org.apache.hadoop.conf.Configurable, org.apache.hadoop.io.Writable

public class HbaseMapWritable<K,V>
extends Object
implements SortedMap<byte[],V>, org.apache.hadoop.io.Writable, org.apache.hadoop.conf.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. Keys are always byte arrays. Thats other difference from MapWritable. TODO: Have generics enforce V is a subclass of Writable and K is a byte [] only.


Nested Class Summary
 
Nested classes/interfaces inherited from interface java.util.Map
Map.Entry<K,V>
 
Constructor Summary
HbaseMapWritable()
           
 
Method Summary
 void clear()
          
 Comparator<? super byte[]> comparator()
           
 boolean containsKey(Object key)
          
 boolean containsValue(Object value)
          
 Set<Map.Entry<byte[],V>> entrySet()
          
 byte[] firstKey()
           
 V get(Object key)
          
protected  Class<?> getClass(byte id)
           
 org.apache.hadoop.conf.Configuration getConf()
           
protected  byte getId(Class<?> clazz)
           
 SortedMap<byte[],V> headMap(byte[] toKey)
           
 boolean isEmpty()
          
 Set<byte[]> keySet()
          
 byte[] lastKey()
           
 V put(byte[] key, V value)
           
 void putAll(Map<? extends byte[],? extends V> m)
           
 void readFields(DataInput in)
          
 V remove(Object key)
           
 void setConf(org.apache.hadoop.conf.Configuration conf)
           
 int size()
          
 SortedMap<byte[],V> subMap(byte[] fromKey, byte[] toKey)
           
 SortedMap<byte[],V> tailMap(byte[] fromKey)
           
 String toString()
           
 Collection<V> values()
          
 void write(DataOutput out)
          
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait
 
Methods inherited from interface java.util.Map
equals, hashCode
 

Constructor Detail

HbaseMapWritable

public HbaseMapWritable()
Method Detail

getConf

public org.apache.hadoop.conf.Configuration getConf()
Specified by:
getConf in interface org.apache.hadoop.conf.Configurable
Returns:
the conf

setConf

public void setConf(org.apache.hadoop.conf.Configuration conf)
Specified by:
setConf in interface org.apache.hadoop.conf.Configurable
Parameters:
conf - the conf to set

clear

public void clear()

Specified by:
clear in interface Map<byte[],V>

containsKey

public boolean containsKey(Object key)

Specified by:
containsKey in interface Map<byte[],V>

containsValue

public boolean containsValue(Object value)

Specified by:
containsValue in interface Map<byte[],V>

entrySet

public Set<Map.Entry<byte[],V>> entrySet()

Specified by:
entrySet in interface Map<byte[],V>

get

public V get(Object key)

Specified by:
get in interface Map<byte[],V>

isEmpty

public boolean isEmpty()

Specified by:
isEmpty in interface Map<byte[],V>

keySet

public Set<byte[]> keySet()

Specified by:
keySet in interface Map<byte[],V>

size

public int size()

Specified by:
size in interface Map<byte[],V>

values

public Collection<V> values()

Specified by:
values in interface Map<byte[],V>

putAll

public void putAll(Map<? extends byte[],? extends V> m)
Specified by:
putAll in interface Map<byte[],V>

remove

public V remove(Object key)
Specified by:
remove in interface Map<byte[],V>

put

public V put(byte[] key,
             V value)
Specified by:
put in interface Map<byte[],V>

comparator

public Comparator<? super byte[]> comparator()
Specified by:
comparator in interface SortedMap<byte[],V>

firstKey

public byte[] firstKey()
Specified by:
firstKey in interface SortedMap<byte[],V>

headMap

public SortedMap<byte[],V> headMap(byte[] toKey)
Specified by:
headMap in interface SortedMap<byte[],V>

lastKey

public byte[] lastKey()
Specified by:
lastKey in interface SortedMap<byte[],V>

subMap

public SortedMap<byte[],V> subMap(byte[] fromKey,
                                  byte[] toKey)
Specified by:
subMap in interface SortedMap<byte[],V>

tailMap

public SortedMap<byte[],V> tailMap(byte[] fromKey)
Specified by:
tailMap in interface SortedMap<byte[],V>

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

toString

public String toString()
Overrides:
toString in class Object

write

public void write(DataOutput out)
           throws IOException

Specified by:
write in interface org.apache.hadoop.io.Writable
Throws:
IOException

readFields

public void readFields(DataInput in)
                throws IOException

Specified by:
readFields in interface org.apache.hadoop.io.Writable
Throws:
IOException


Copyright © 2008 The Apache Software Foundation