org.apache.solr.store.blockcache
Class BlockDirectoryCache

java.lang.Object
  extended by 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


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