org.openstreetmap.josm.data.cache

Class JCSCacheManager

java.lang.Object

org.openstreetmap.josm.data.cache.JCSCacheManager

public final class JCSCacheManager
extends Object

Since:

8168

Field Summary

Fields

Modifier and Type	Field and Description
private static FileLock	cacheDirLock
private static org.apache.commons.jcs.engine.control.CompositeCacheManager	cacheManager
static IntegerProperty	DEFAULT_MAX_OBJECTS_IN_MEMORY default objects to be held in memory by JCS caches (per region)
private static org.apache.commons.jcs.auxiliary.AuxiliaryCacheFactory	diskCacheFactory
private static Logger	LOG
private static long	maxObjectTTL
private static String	PREFERENCE_PREFIX

Constructor Summary

Constructors

Modifier	Constructor and Description
private	JCSCacheManager()

Method Summary

Modifier and Type	Method and Description
static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V>	getCache(String cacheName) Returns configured cache object for named cache region
static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V>	getCache(String cacheName, int maxMemoryObjects, int maxDiskObjects, String cachePath) Returns configured cache object with defined limits of memory cache and disk cache
private static org.apache.commons.jcs.engine.CompositeCacheAttributes	getCacheAttributes(int maxMemoryElements)
private static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V>	getCacheInner(String cacheName, int maxMemoryObjects, int maxDiskObjects, String cachePath)
private static org.apache.commons.jcs.auxiliary.disk.behavior.IDiskCacheAttributes	getDiskCacheAttributes(int maxDiskObjects, String cachePath)
private static void	initialize()
static void	shutdown() Close all files to ensure, that all indexes and data are properly written

Methods inherited from class java.lang.Object

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

Field Detail

LOG

private static final Logger LOG

cacheManager

private static volatile org.apache.commons.jcs.engine.control.CompositeCacheManager cacheManager

maxObjectTTL

private static long maxObjectTTL

PREFERENCE_PREFIX

private static final String PREFERENCE_PREFIX

See Also:

Constant Field Values

diskCacheFactory

private static final org.apache.commons.jcs.auxiliary.AuxiliaryCacheFactory diskCacheFactory

cacheDirLock

private static FileLock cacheDirLock

DEFAULT_MAX_OBJECTS_IN_MEMORY

public static final IntegerProperty DEFAULT_MAX_OBJECTS_IN_MEMORY

default objects to be held in memory by JCS caches (per region)

Constructor Detail

JCSCacheManager

private JCSCacheManager()

Method Detail

initialize

private static void initialize()
                        throws IOException

Throws:

IOException

getCache

public static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V> getCache(String cacheName)
                                                                     throws IOException

Returns configured cache object for named cache region

Type Parameters:

K - key type

V - value type

Parameters:

cacheName - region name

Returns:

cache access object

Throws:

IOException - if directory is not found

getCache

public static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V> getCache(String cacheName,
                                                                            int maxMemoryObjects,
                                                                            int maxDiskObjects,
                                                                            String cachePath)
                                                                     throws IOException

Returns configured cache object with defined limits of memory cache and disk cache

Type Parameters:

K - key type

V - value type

Parameters:

cacheName - region name

maxMemoryObjects - number of objects to keep in memory

maxDiskObjects - maximum size of the objects stored on disk in kB

cachePath - path to disk cache. if null, no disk cache will be created

Returns:

cache access object

Throws:

IOException - if directory is not found

getCacheInner

private static <K,V> org.apache.commons.jcs.access.CacheAccess<K,V> getCacheInner(String cacheName,
                                                                                  int maxMemoryObjects,
                                                                                  int maxDiskObjects,
                                                                                  String cachePath)

shutdown

public static void shutdown()

Close all files to ensure, that all indexes and data are properly written

getDiskCacheAttributes

private static org.apache.commons.jcs.auxiliary.disk.behavior.IDiskCacheAttributes getDiskCacheAttributes(int maxDiskObjects,
                                                                                                          String cachePath)

getCacheAttributes

private static org.apache.commons.jcs.engine.CompositeCacheAttributes getCacheAttributes(int maxMemoryElements)