org.apache.activemq.kaha.impl.index.hash
Class HashIndex

java.lang.Object
  org.apache.activemq.kaha.impl.index.hash.HashIndex

All Implemented Interfaces:

HashIndexMBean, Index, IndexMBean

public class HashIndex
extends Object
implements Index, HashIndexMBean

BTree implementation

Field Summary

static int	DEFAULT_BIN_SIZE
static int	DEFAULT_KEY_SIZE
static int	DEFAULT_LOAD_FACTOR
static int	DEFAULT_PAGE_SIZE
static int	MAXIMUM_CAPACITY

Constructor Summary

HashIndex(File directory, String name, IndexManager indexManager)
Constructor

Method Summary

void	clear() clear the index
boolean	containsKey(Object key)
void	delete() delete all state associated with the index
StoreEntry	get(Object key)
int	getActiveBins()
int	getKeySize()
int	getLoadFactor()
int	getMaximumCapacity()
int	getNumberOfBins()
int	getPageCacheSize()
int	getPageSize()
int	getSize() return the size of the index
int	getThreshold()
boolean	isEnablePageCaching()
boolean	isTransient()
void	load() load indexes
StoreEntry	remove(Object key) remove the index key
void	setEnablePageCaching(boolean enablePageCaching)
void	setKeyMarshaller(Marshaller marshaller) Set the marshaller for key objects
void	setKeySize(int keySize)
void	setLoadFactor(int loadFactor)
void	setMaximumCapacity(int maximumCapacity)
void	setNumberOfBins(int numberOfBins)
void	setPageCacheSize(int pageCacheSize)
void	setPageSize(int pageSize)
void	setThreshold(int threshold)
void	store(Object key, StoreEntry value) store the key, item
String	toString()
void	unload() unload indexes

Methods inherited from class java.lang.Object

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

Field Detail

DEFAULT_PAGE_SIZE

public static final int DEFAULT_PAGE_SIZE

DEFAULT_KEY_SIZE

public static final int DEFAULT_KEY_SIZE

DEFAULT_BIN_SIZE

public static final int DEFAULT_BIN_SIZE

MAXIMUM_CAPACITY

public static final int MAXIMUM_CAPACITY

DEFAULT_LOAD_FACTOR

public static final int DEFAULT_LOAD_FACTOR

Constructor Detail

HashIndex

public HashIndex(File directory,
                 String name,
                 IndexManager indexManager)
          throws IOException

Constructor

Parameters:

directory -

name -

indexManager -

Throws:

IOException

Method Detail

setKeyMarshaller

public void setKeyMarshaller(Marshaller marshaller)

Set the marshaller for key objects

Specified by:

setKeyMarshaller in interface Index

Parameters:

marshaller -

getKeySize

public int getKeySize()

Specified by:

getKeySize in interface HashIndexMBean

Returns:

the keySize

setKeySize

public void setKeySize(int keySize)

Specified by:

setKeySize in interface HashIndexMBean

Parameters:

keySize - the keySize to set

getPageSize

public int getPageSize()

Specified by:

getPageSize in interface HashIndexMBean

Returns:

the pageSize

setPageSize

public void setPageSize(int pageSize)

Parameters:

pageSize - the pageSize to set

getNumberOfBins

public int getNumberOfBins()

Specified by:

getNumberOfBins in interface HashIndexMBean

Returns:

number of bins

setNumberOfBins

public void setNumberOfBins(int numberOfBins)

Parameters:

numberOfBins -

isEnablePageCaching

public boolean isEnablePageCaching()

Specified by:

isEnablePageCaching in interface HashIndexMBean

Returns:

the enablePageCaching

setEnablePageCaching

public void setEnablePageCaching(boolean enablePageCaching)

Parameters:

enablePageCaching - the enablePageCaching to set

getPageCacheSize

public int getPageCacheSize()

Specified by:

getPageCacheSize in interface HashIndexMBean

Returns:

the pageCacheSize

setPageCacheSize

public void setPageCacheSize(int pageCacheSize)

Parameters:

pageCacheSize - the pageCacheSize to set

isTransient

public boolean isTransient()

Specified by:

isTransient in interface Index

Specified by:

isTransient in interface IndexMBean

Returns:

true if the index is transient

getThreshold

public int getThreshold()

Returns:

the threshold

setThreshold

public void setThreshold(int threshold)

Parameters:

threshold - the threshold to set

getLoadFactor

public int getLoadFactor()

Returns:

the loadFactor

setLoadFactor

public void setLoadFactor(int loadFactor)

Parameters:

loadFactor - the loadFactor to set

getMaximumCapacity

public int getMaximumCapacity()

Returns:

the maximumCapacity

setMaximumCapacity

public void setMaximumCapacity(int maximumCapacity)

Parameters:

maximumCapacity - the maximumCapacity to set

getSize

public int getSize()

Description copied from interface: Index

return the size of the index

Specified by:

getSize in interface HashIndexMBean

Specified by:

getSize in interface Index

Specified by:

getSize in interface IndexMBean

Returns:

size

getActiveBins

public int getActiveBins()

Specified by:

getActiveBins in interface HashIndexMBean

Returns:

the number of active bins

load

public void load()

Description copied from interface: Index

load indexes

Specified by:

load in interface Index

unload

public void unload()
            throws IOException

Description copied from interface: Index

unload indexes

Specified by:

unload in interface Index

Throws:

IOException

store

public void store(Object key,
                  StoreEntry value)
           throws IOException

Description copied from interface: Index

store the key, item

Specified by:

store in interface Index

Throws:

IOException

get

public StoreEntry get(Object key)
               throws IOException

Specified by:

get in interface Index

Returns:

the entry

Throws:

IOException

remove

public StoreEntry remove(Object key)
                  throws IOException

Description copied from interface: Index

remove the index key

Specified by:

remove in interface Index

Returns:

StoreEntry removed

Throws:

IOException

containsKey

public boolean containsKey(Object key)
                    throws IOException

Specified by:

containsKey in interface Index

Returns:

true if it contains the key

Throws:

IOException

clear

public void clear()
           throws IOException

Description copied from interface: Index

clear the index

Specified by:

clear in interface Index

Throws:

IOException

delete

public void delete()
            throws IOException

Description copied from interface: Index

delete all state associated with the index

Specified by:

delete in interface Index

Throws:

IOException

toString

public String toString()

Overrides:

toString in class Object