org.apache.solr.store.blockcache
Class BlockDirectoryCache

java.lang.Object
  org.apache.solr.store.blockcache.BlockDirectoryCache

All Implemented Interfaces:

Cache

public class BlockDirectoryCache
extends Object
implements Cache

Constructor Summary

BlockDirectoryCache(BlockCache blockCache, Metrics metrics)

Method Summary

void	delete(String name) Remove a file from the cache.
boolean	fetch(String name, long blockId, int blockOffset, byte[] b, int off, int lengthToReadInBlock) Fetch the specified cache file content.
void	renameCacheFile(String source, String dest) Expert: Rename the specified file in the cache.
long	size() Number of entries in the cache.
void	update(String name, long blockId, int blockOffset, byte[] buffer, int offset, int length) Update the content of the specified cache file.

Methods inherited from class java.lang.Object

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

Constructor Detail

BlockDirectoryCache

public BlockDirectoryCache(BlockCache blockCache,
                           Metrics metrics)

Method Detail

delete

public void delete(String name)

Description copied from interface: Cache

Remove a file from the cache.

Specified by:

delete in interface Cache

Parameters:

name - cache file name

update

public void update(String name,
                   long blockId,
                   int blockOffset,
                   byte[] buffer,
                   int offset,
                   int length)

Description copied from interface: Cache

Update the content of the specified cache file. Creates cache entry if necessary.

Specified by:

update in interface Cache

fetch

public boolean fetch(String name,
                     long blockId,
                     int blockOffset,
                     byte[] b,
                     int off,
                     int lengthToReadInBlock)

Description copied from interface: Cache

Fetch the specified cache file content.

Specified by:

fetch in interface Cache

Returns:

true if cached content found, otherwise return false

size

public long size()

Description copied from interface: Cache

Number of entries in the cache.

Specified by:

size in interface Cache

renameCacheFile

public void renameCacheFile(String source,
                            String dest)

Description copied from interface: Cache

Expert: Rename the specified file in the cache. Allows a file to be moved without invalidating the cache.

Specified by:

renameCacheFile in interface Cache

Parameters:

source - original name

dest - final name