org.basex.index

Class IndexCache

java.lang.Object

org.basex.index.IndexCache

public final class IndexCache
extends java.lang.Object

This class caches sizes and pointers from index results.

Author:

BaseX Team 2005-12, BSD License, Dimitar Popov

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	IndexCache.CacheEntry Cache entry data.

Constructor Summary

Constructors

Constructor and Description
IndexCache()

Method Summary

Methods

Modifier and Type	Method and Description
void	add(byte[] key, int s, long p) Adds a new cache entry.
void	delete(byte[] key) Deletes a cached entry.
IndexCache.CacheEntry	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 Detail

IndexCache

public IndexCache()

Method Detail

get

public IndexCache.CacheEntry 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 void add(byte[] key,
       int s,
       long p)

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

Parameters:

key - key

s - number of index hits

p - pointer to id list

delete

public void delete(byte[] key)

Deletes a cached entry.

Parameters:

key - key