org.hsqldb.persist

Class Cache

java.lang.Object

org.hsqldb.map.BaseHashMap

org.hsqldb.persist.Cache

public class Cache
extends BaseHashMap

New implementation of row caching for CACHED tables.

Manages memory for the cache map and its contents based on least recently used clearup.

Also provides services for selecting rows to be saved and passing them to DataFileCache.

Since:

1.8.0

Field Summary

Fields inherited from class org.hsqldb.map.BaseHashMap

ACCESS_MAX, emptyObjectArray

Method Summary

Modifier and Type	Method and Description
void	clear() clears out the memory cache
CachedObject	get(long pos) Returns a row if in memory cache.
Iterator	getIterator()

Methods inherited from class org.hsqldb.map.BaseHashMap

capacity, getAccessCountCeiling, incrementAccessCount, isEmpty, setAccessCountFloor, size

Methods inherited from class java.lang.Object

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

Method Detail

get

public CachedObject get(long pos)

Returns a row if in memory cache.

clear

public void clear()

clears out the memory cache

Overrides:

clear in class BaseHashMap

getIterator

public Iterator getIterator()