Package aQute.lib.index

Class Index

java.lang.Object

aQute.lib.index.Index

All Implemented Interfaces:

java.lang.Iterable<byte[]>

public class Index
extends java.lang.Object
implements java.lang.Iterable<byte[]>

  0 -> 0, 122 -> 1 123 -> 123, 244 -> 2 245 -> 245, ...
 

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
(package private) class	Index.Page

Field Summary

Fields

Modifier and Type	Field	Description
(package private) java.util.LinkedHashMap<java.lang.Integer,Index.Page>	cache
(package private) int	capacity
(package private) java.nio.channels.FileChannel	file
(package private) static int	INDEX
(package private) int	keySize
(package private) static int	KEYSIZE
(package private) static int	LEAF
(package private) static int	MAGIC
private int	nextPage
(package private) int	pageSize
Index.Page	root
(package private) java.nio.MappedByteBuffer	settings
(package private) static int	SIGNATURE
(package private) int	valueSize

Constructor Summary

Constructors

Constructor	Description
Index(java.io.File file, int keySize)

Method Summary

Modifier and Type	Method	Description
(package private) Index.Page	allocate(boolean leaf)
void	close()
(package private) Index.Page	getPage(int number)
void	insert(byte[] k, long v)
java.util.Iterator<byte[]>	iterator()
long	search(byte[] k)
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.lang.Iterable

forEach, spliterator

Field Detail

LEAF

static final int LEAF

See Also:

Constant Field Values

INDEX

static final int INDEX

See Also:

Constant Field Values

SIGNATURE

static final int SIGNATURE

See Also:

Constant Field Values

MAGIC

static final int MAGIC

See Also:

Constant Field Values

KEYSIZE

static final int KEYSIZE

See Also:

Constant Field Values

file

java.nio.channels.FileChannel file

pageSize

final int pageSize

See Also:

Constant Field Values

keySize

final int keySize

valueSize

final int valueSize

See Also:

Constant Field Values

capacity

final int capacity

root

public Index.Page root

cache

final java.util.LinkedHashMap<java.lang.Integer,Index.Page> cache

settings

final java.nio.MappedByteBuffer settings

nextPage

private int nextPage

Constructor Detail

Index

public Index(java.io.File file,
             int keySize)
      throws java.io.IOException

Throws:

java.io.IOException

Method Detail

insert

public void insert(byte[] k,
                   long v)
            throws java.lang.Exception

Throws:

java.lang.Exception

search

public long search(byte[] k)
            throws java.lang.Exception

Throws:

java.lang.Exception

allocate

Index.Page allocate(boolean leaf)
             throws java.io.IOException

Throws:

java.io.IOException

getPage

Index.Page getPage(int number)
            throws java.io.IOException

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object

close

public void close()
           throws java.io.IOException

Throws:

java.io.IOException

iterator

public java.util.Iterator<byte[]> iterator()

Specified by:

iterator in interface java.lang.Iterable<byte[]>