Package com.aitusoftware.recall.map

Class ByteSequenceMap

java.lang.Object

com.aitusoftware.recall.map.ByteSequenceMap

All Implemented Interfaces:

SequenceMap<java.nio.ByteBuffer>

public final class ByteSequenceMap
extends java.lang.Object
implements SequenceMap<java.nio.ByteBuffer>

Map for storing a byte-sequence against a long value.

Constructor Summary

Constructors

Constructor	Description
ByteSequenceMap(int maxKeyLength, int initialSize, long missingValue)	Constructor for the map.
ByteSequenceMap(int maxKeyLength, int initialSize, long missingValue, java.util.function.IntFunction<java.nio.ByteBuffer> bufferFactory)	Constructor for the map.

Method Summary

Modifier and Type	Method	Description
long	get(java.nio.ByteBuffer value)	Searches the map for a given key.
void	put(java.nio.ByteBuffer value, long id)	Insert a value into the map.
void	rehash()	Allocates a new buffer and copies existing entries to it.
long	remove(java.nio.ByteBuffer value)	Removes an entry for a given key.
int	size()	Returns the number of entries in the map.

Methods inherited from class java.lang.Object

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

Constructor Detail

ByteSequenceMap

public ByteSequenceMap(int maxKeyLength,
                       int initialSize,
                       long missingValue)

Constructor for the map.

Parameters:

maxKeyLength - max length of any key

initialSize - initial size of the map

missingValue - initial size of the map

ByteSequenceMap

public ByteSequenceMap(int maxKeyLength,
                       int initialSize,
                       long missingValue,
                       java.util.function.IntFunction<java.nio.ByteBuffer> bufferFactory)

Constructor for the map.

Parameters:

maxKeyLength - max length of any key

initialSize - initial size of the map

missingValue - initial size of the map

bufferFactory - factory method for creating new ByteBuffer instances

Method Detail

put

public void put(java.nio.ByteBuffer value,
                long id)

Insert a value into the map..

Specified by:

put in interface SequenceMap<java.nio.ByteBuffer>

Parameters:

value - value to use as a key

id - id to store

get

public long get(java.nio.ByteBuffer value)

Searches the map for a given key..

Specified by:

get in interface SequenceMap<java.nio.ByteBuffer>

Parameters:

value - the key to search for

Returns:

the retrieved value, or missingValue if it was not present

remove

public long remove(java.nio.ByteBuffer value)

Removes an entry for a given key..

Specified by:

remove in interface SequenceMap<java.nio.ByteBuffer>

Parameters:

value - the key to search for

Returns:

the stored value, or missingValue if the key was not present

size

public int size()

Returns the number of entries in the map..

Specified by:

size in interface SequenceMap<java.nio.ByteBuffer>

Returns:

the number of entries

rehash

public void rehash()

Allocates a new buffer and copies existing entries to it..

Specified by:

rehash in interface SequenceMap<java.nio.ByteBuffer>