com.fasterxml.classmate.util

Class LRUTypeCache

java.lang.Object

com.fasterxml.classmate.util.ResolvedTypeCache

com.fasterxml.classmate.util.LRUTypeCache

All Implemented Interfaces:

Serializable

public class LRUTypeCache
extends ResolvedTypeCache

Simple cache used for storing up to specified number of most recently accessed ResolvedType instances. Uses "least-recently used" eviction algorithm (via LinkedHashMap used internally) which optimized retention, but requires full synchronization as read operation also has to modify internal state to maintain LRU aspects. This means that it works well in optimizing access patterns, by keeping most recently accessed types in cache, but may not well work well for highly concurrent cases due to synchronization overhead.

Like all ResolvedTypeCache implementations, access is thread-safe and caller need not (and should not) use additional synchronization.

Since:

1.4

See Also:

ConcurrentTypeCache, Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected com.fasterxml.classmate.util.LRUTypeCache.CacheMap	_map
protected int	_maxEntries

Constructor Summary

Constructors

Constructor and Description
LRUTypeCache(int maxEntries)

Method Summary

Modifier and Type	Method and Description
ResolvedType	find(ResolvedTypeKey key)
void	put(ResolvedTypeKey key, ResolvedType type)
int	size()

Methods inherited from class com.fasterxml.classmate.util.ResolvedTypeCache

_addForTest, concurrentCache, key, key, lruCache

Methods inherited from class java.lang.Object

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

Field Detail

_maxEntries

protected final int _maxEntries

_map

protected final transient com.fasterxml.classmate.util.LRUTypeCache.CacheMap _map

Constructor Detail

LRUTypeCache

public LRUTypeCache(int maxEntries)

Method Detail

find

public ResolvedType find(ResolvedTypeKey key)

Specified by:

find in class ResolvedTypeCache

size

public int size()

Specified by:

size in class ResolvedTypeCache

put

public void put(ResolvedTypeKey key,
                ResolvedType type)

Specified by:

put in class ResolvedTypeCache