in.srain.cube.diskcache.lru

Class SimpleDiskLruCache

java.lang.Object

in.srain.cube.diskcache.lru.SimpleDiskLruCache

All Implemented Interfaces:

DiskCache

public final class SimpleDiskLruCache
extends java.lang.Object
implements DiskCache

Field Summary

Fields

Modifier and Type	Field and Description
static boolean	DEBUG
static java.lang.String	LOG_TAG

Constructor Summary

Constructors

Constructor and Description
SimpleDiskLruCache(java.io.File directory, int appVersion, long capacity)

Method Summary

Methods

Modifier and Type	Method and Description
void	abortEdit(CacheEntry cacheEntry) abort edit
void	abortEdit(java.lang.String key) abort edit by key
CacheEntry	beginEdit(java.lang.String key) begin edit an
void	clear() clear all the content
void	close() Closes this cache.
void	commitEdit(CacheEntry cacheEntry) abort edit by key
boolean	delete(java.lang.String key) Drops the entry for key if it exists and can be removed.
void	flush() Force buffered operations to the filesystem.
long	getCapacity()
java.io.File	getDirectory() Returns the directory where this cache stores its data.
CacheEntry	getEntry(java.lang.String key) Returns a CacheEntry named key, or null if it doesn't exist is not currently readable.
long	getSize() Returns the number of bytes currently being used to store the values in this cache.
boolean	has(java.lang.String key) Check if has this key
void	open() open disk cache
java.lang.String	toString()

Methods inherited from class java.lang.Object

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

Field Detail

LOG_TAG

public static final java.lang.String LOG_TAG

See Also:

Constant Field Values

DEBUG

public static boolean DEBUG

Constructor Detail

SimpleDiskLruCache

public SimpleDiskLruCache(java.io.File directory,
                  int appVersion,
                  long capacity)

Parameters:

directory -

appVersion -

capacity -

Method Detail

clear

public void clear()
           throws java.io.IOException

clear all the content

Specified by:

clear in interface DiskCache

Throws:

java.io.IOException

has

public boolean has(java.lang.String key)

Description copied from interface: DiskCache

Check if has this key

Specified by:

has in interface DiskCache

Returns:

open

public void open()
          throws java.io.IOException

Description copied from interface: DiskCache

open disk cache

Specified by:

open in interface DiskCache

Throws:

java.io.IOException

getEntry

public CacheEntry getEntry(java.lang.String key)
                    throws java.io.IOException

Returns a CacheEntry named key, or null if it doesn't exist is not currently readable. If a value is returned, it is moved to the head of the LRU queue.

Specified by:

getEntry in interface DiskCache

Returns:

Throws:

java.io.IOException

beginEdit

public CacheEntry beginEdit(java.lang.String key)
                     throws java.io.IOException

Description copied from interface: DiskCache

begin edit an

Specified by:

beginEdit in interface DiskCache

Returns:

Throws:

java.io.IOException

abortEdit

public void abortEdit(CacheEntry cacheEntry)

Description copied from interface: DiskCache

abort edit

Specified by:

abortEdit in interface DiskCache

abortEdit

public void abortEdit(java.lang.String key)

Description copied from interface: DiskCache

abort edit by key

Specified by:

abortEdit in interface DiskCache

commitEdit

public void commitEdit(CacheEntry cacheEntry)
                throws java.io.IOException

Description copied from interface: DiskCache

abort edit by key

Specified by:

commitEdit in interface DiskCache

Throws:

java.io.IOException

delete

public boolean delete(java.lang.String key)
               throws java.io.IOException

Drops the entry for key if it exists and can be removed. Entries actively being edited cannot be removed.

Specified by:

delete in interface DiskCache

Returns:

true if an entry was removed.

Throws:

java.io.IOException

getCapacity

public long getCapacity()

Specified by:

getCapacity in interface DiskCache

getSize

public long getSize()

Returns the number of bytes currently being used to store the values in this cache. This may be greater than the max size if a background deletion is pending.

Specified by:

getSize in interface DiskCache

getDirectory

public java.io.File getDirectory()

Returns the directory where this cache stores its data.

Specified by:

getDirectory in interface DiskCache

flush

public void flush()
           throws java.io.IOException

Force buffered operations to the filesystem.

Specified by:

flush in interface DiskCache

Throws:

java.io.IOException

close

public void close()
           throws java.io.IOException

Closes this cache. Stored values will remain on the filesystem.

Specified by:

close in interface DiskCache

Throws:

java.io.IOException

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object