net.yacy.cora.storage

Interface HandleMap

All Superinterfaces:

java.lang.Iterable<java.util.Map.Entry<byte[],java.lang.Long>>

All Known Implementing Classes:

RowHandleMap

public interface HandleMap
extends java.lang.Iterable<java.util.Map.Entry<byte[],java.lang.Long>>

Method Summary

Methods

Modifier and Type	Method and Description
long	add(byte[] key, long a)
void	clear()
void	close()
long	dec(byte[] key)
int	dump(java.io.File file) write a dump of the index to a file.
long	get(byte[] key)
boolean	has(byte[] key)
long	inc(byte[] key)
boolean	isEmpty()
CloneableIterator<byte[]>	keys(boolean up, byte[] firstKey)
byte[]	largestKey()
long	mem()
void	optimize()
long	put(byte[] key, long l) Adds the key-value pair to the index.
void	putUnique(byte[] key, long l)
long	remove(byte[] key)
java.util.ArrayList<long[]>	removeDoubles()
long	removeone()
int	size()
byte[]	smallestKey()
java.util.ArrayList<byte[]>	top(int count)

Methods inherited from interface java.lang.Iterable

iterator

Method Detail

mem

long mem()

optimize

void optimize()

dump

int dump(java.io.File file)
         throws java.io.IOException

write a dump of the index to a file. All entries are written in order which makes it possible to read them again in a fast way

Parameters:

file -

Returns:

the number of written entries

Throws:

java.io.IOException

clear

void clear()

smallestKey

byte[] smallestKey()

largestKey

byte[] largestKey()

has

boolean has(byte[] key)

get

long get(byte[] key)

put

long put(byte[] key,
       long l)
         throws SpaceExceededException

Adds the key-value pair to the index.

Parameters:

key - the index key

l - the value

Returns:

the previous entry of the index

Throws:

java.io.IOException

SpaceExceededException

putUnique

void putUnique(byte[] key,
             long l)
               throws SpaceExceededException

Throws:

SpaceExceededException

add

long add(byte[] key,
       long a)
         throws SpaceExceededException

Throws:

SpaceExceededException

inc

long inc(byte[] key)
         throws SpaceExceededException

Throws:

SpaceExceededException

dec

long dec(byte[] key)
         throws SpaceExceededException

Throws:

SpaceExceededException

removeDoubles

java.util.ArrayList<long[]> removeDoubles()
                                          throws SpaceExceededException

Throws:

SpaceExceededException

top

java.util.ArrayList<byte[]> top(int count)

remove

long remove(byte[] key)

removeone

long removeone()

size

int size()

isEmpty

boolean isEmpty()

keys

CloneableIterator<byte[]> keys(boolean up,
                             byte[] firstKey)

close

void close()