Package org.basex.index

Class IndexCache

java.lang.Object

org.basex.index.IndexCache

public final class IndexCache
extends Object

This class caches sizes and offsets from index results.

Author:

BaseX Team 2005-21, BSD License, Dimitar Popov

Constructor Summary

Constructors

Constructor	Description
IndexCache()

Method Summary

Modifier and Type	Method	Description
IndexEntry	add(byte[] key, int count, long offset)	Adds a new cache entry.
void	delete(byte[] key)	Deletes a cached entry.
IndexEntry	get(byte[] key)	Gets cached entry for the specified key.

Methods inherited from class java.lang.Object

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

Constructor Details

IndexCache

public IndexCache()

Method Details

get

public IndexEntry get(byte[] key)

Gets cached entry for the specified key.

Parameters:

key - key

Returns:

cached entry or null if the entry is stale

add

public IndexEntry add(byte[] key,
 int count,
 long offset)

Adds a new cache entry. If an entry with the specified key already exists, it will be updated.

Parameters:

key - key

count - number of index hits

offset - offset to id list

Returns:

cache entry

delete

public void delete(byte[] key)

Deletes a cached entry.

Parameters:

key - key