|
|||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |
java.lang.Object org.apache.jackrabbit.core.state.LRUItemStateCache
An ItemStateCache
implementation that internally uses a
LRUMap
to maintain a cache of ItemState
objects.
Field Summary | |
static int |
DEFAULT_MAX_SIZE
default maximum size of this cache |
Constructor Summary | |
LRUItemStateCache()
Constructs a new, empty ItemStateCache with a maximum size
of 1000. |
|
LRUItemStateCache(int maxSize)
Constructs a new, empty ItemStateCache with the specified
maximum size. |
Method Summary | |
void |
cache(ItemState state)
Stores the specified ItemState object in the map
using its ItemId as the key. |
void |
evict(ItemId id)
Removes the ItemState object with the specified id from
this cache if it is present. |
void |
evictAll()
Clears all entries from this cache. |
boolean |
isCached(ItemId id)
Returns true if this cache contains an ItemState
object with the specified id . |
boolean |
isEmpty()
Returns true if this cache contains no entries. |
Set |
keySet()
Returns an unmodifiable set view of the keys (i.e. ItemId
objects) of the cached entries. |
ItemState |
retrieve(ItemId id)
Returns the ItemState object with the specified
id if it is present or null if no entry exists
with that id . |
int |
size()
Returns the number of entries in this cache. |
Collection |
values()
Returns an unmodifiable collection view of the values (i.e. ItemState objects) contained in this cache. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Field Detail |
public static final int DEFAULT_MAX_SIZE
Constructor Detail |
public LRUItemStateCache()
ItemStateCache
with a maximum size
of 1000.
public LRUItemStateCache(int maxSize)
ItemStateCache
with the specified
maximum size.
maxSize
- the maximum size of the cache, -1 for no limit,Method Detail |
public boolean isCached(ItemId id)
true
if this cache contains an ItemState
object with the specified id
.
isCached
in interface ItemStateCache
id
- id of ItemState
object whose presence should be
tested.
true
if there's a corresponding cache entry,
otherwise false
.public ItemState retrieve(ItemId id)
ItemState
object with the specified
id
if it is present or null
if no entry exists
with that id
.
retrieve
in interface ItemStateCache
id
- the id of the ItemState
object to be returned.
ItemState
object with the specified
id
or or null
if no entry exists
with that id
public void cache(ItemState state)
ItemState
object in the map
using its ItemId
as the key.
cache
in interface ItemStateCache
state
- the ItemState
object to cachepublic void evict(ItemId id)
ItemState
object with the specified id from
this cache if it is present.
evict
in interface ItemStateCache
id
- the id of the ItemState
object which should be
removed from this cache.public void evictAll()
evictAll
in interface ItemStateCache
public boolean isEmpty()
true
if this cache contains no entries.
isEmpty
in interface ItemStateCache
true
if this cache contains no entries.public int size()
size
in interface ItemStateCache
public Set keySet()
ItemId
objects) of the cached entries.
keySet
in interface ItemStateCache
public Collection values()
ItemState
objects) contained in this cache.
values
in interface ItemStateCache
|
|||||||||||
PREV CLASS NEXT CLASS | FRAMES NO FRAMES | ||||||||||
SUMMARY: NESTED | FIELD | CONSTR | METHOD | DETAIL: FIELD | CONSTR | METHOD |