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

Class FileCache

java.lang.Object

org.apache.jackrabbit.guava.common.cache.AbstractCache<String,File>

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

All Implemented Interfaces:

Closeable, AutoCloseable, org.apache.jackrabbit.guava.common.cache.Cache<String,File>

public class FileCache
extends org.apache.jackrabbit.guava.common.cache.AbstractCache<String,File>
implements Closeable

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.jackrabbit.guava.common.cache.AbstractCache

org.apache.jackrabbit.guava.common.cache.AbstractCache.SimpleStatsCounter, org.apache.jackrabbit.guava.common.cache.AbstractCache.StatsCounter

Field Summary

Fields

Modifier and Type	Field	Description
protected static final String	DOWNLOAD_DIR

Method Summary

Modifier and Type	Method	Description
static FileCache	build(long maxSize, File root, org.apache.jackrabbit.guava.common.cache.CacheLoader<String,InputStream> loader, @Nullable ExecutorService executor)
void	close()
boolean	containsKey(String key)
File	get(String key)
long	getEntryCount()	Get the current entry count (number of files).
@Nullable File	getIfPresent(Object key)
@Nullable File	getIfPresent(String key)	Retrieves the file handle from the cache if present and null otherwise.
DataStoreCacheStatsMBean	getStats()
void	invalidate(Object key)
void	put(String key, File file)	Puts the given key and file into the cache.
void	setMaxEntryCount(long maxEntryCount)	Set the maximum number of files.

Methods inherited from class org.apache.jackrabbit.guava.common.cache.AbstractCache

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

Methods inherited from class java.lang.Object

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

Field Details

DOWNLOAD_DIR

protected static final String DOWNLOAD_DIR

See Also:

• Constant Field Values

Method Details

setMaxEntryCount

public void setMaxEntryCount(long maxEntryCount)

Set the maximum number of files.

getEntryCount

public long getEntryCount()

Get the current entry count (number of files).

build

public static FileCache build(long maxSize,
 File root,
 org.apache.jackrabbit.guava.common.cache.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 org.apache.jackrabbit.guava.common.cache.Cache<String,File>

Overrides:

put in class org.apache.jackrabbit.guava.common.cache.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)

Specified by:

getIfPresent in interface org.apache.jackrabbit.guava.common.cache.Cache<String,File>

get

public File get(String key)
         throws IOException

Throws:

IOException

invalidate

public void invalidate(Object key)

Specified by:

invalidate in interface org.apache.jackrabbit.guava.common.cache.Cache<String,File>

Overrides:

invalidate in class org.apache.jackrabbit.guava.common.cache.AbstractCache<String,File>

getStats

public DataStoreCacheStatsMBean getStats()

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable