Package org.apache.jackrabbit.oak.plugins.blob

Class FileCache

java.lang.Object

com.google.common.cache.AbstractCache<String,File>

org.apache.jackrabbit.oak.plugins.blob.FileCache

All Implemented Interfaces:

Cache<String,File>, Closeable, AutoCloseable

public class FileCache
extends AbstractCache<String,File>
implements Closeable

Nested Class Summary

Nested classes/interfaces inherited from class com.google.common.cache.AbstractCache

AbstractCache.SimpleStatsCounter, AbstractCache.StatsCounter

Method Summary

Modifier and Type	Method	Description
static FileCache	build(long maxSize, File root, CacheLoader<String,InputStream> loader, @Nullable ExecutorService executor)
void	close()
boolean	containsKey(String key)
File	get(String key)
@Nullable File	getIfPresent(Object key)	Returns the value associated with key in this cache, or null if there is no cached value for key.
@Nullable File	getIfPresent(String key)	Retrieves the file handle from the cache if present and null otherwise.
DataStoreCacheStatsMBean	getStats()
void	invalidate(Object key)	Discards any cached value for key key.
void	put(String key, File file)	Puts the given key and file into the cache.

Methods inherited from class com.google.common.cache.AbstractCache

asMap, cleanUp, get, getAllPresent, invalidateAll, invalidateAll, putAll, size, stats

Methods inherited from class java.lang.Object

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

Method Detail

build

public static FileCache build(long maxSize,
                              File root,
                              CacheLoader<String,InputStream> loader,
                              @Nullable
                              @Nullable ExecutorService executor)

put

public void put(String key,
                File file)

Puts the given key and file into the cache. The file is moved to the cache. So, the original file won't be available after this operation. It can be retrieved using getIfPresent(String).

Specified by:

put in interface Cache<String,File>

Overrides:

put in class AbstractCache<String,File>

Parameters:

key - of the file

file - to put into cache

containsKey

public boolean containsKey(String key)

getIfPresent

@Nullable
public @Nullable File getIfPresent(String key)

Retrieves the file handle from the cache if present and null otherwise.

Parameters:

key - of the file to retrieve

Returns:

File handle if available

getIfPresent

@Nullable
public @Nullable File getIfPresent(Object key)

Description copied from interface: Cache

Returns the value associated with key in this cache, or null if there is no cached value for key.

Specified by:

getIfPresent in interface Cache<String,File>

get

public File get(String key)
         throws IOException

Throws:

IOException

invalidate

public void invalidate(Object key)

Description copied from interface: Cache

Discards any cached value for key key.

Specified by:

invalidate in interface Cache<String,File>

Overrides:

invalidate in class AbstractCache<String,File>

getStats

public DataStoreCacheStatsMBean getStats()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable