public class ResourceCache<K,V> extends CacheMap<java.lang.Object,java.lang.Object>
Loader
and then
ResourceCache will use it to check whether a resource is gone,
modified and load the resource.
Unlike CacheMap
, it is thread-safe.
The default check period depends on the library property called org.zkoss.util.resource.checkPeriod (unit: second). If not specified, 5 seconds are assumed
CacheMap.Value<V>
Modifier and Type | Field and Description |
---|---|
protected Loader<K,V> |
_loader
The loader.
|
EXPUNGE_CONTINUE, EXPUNGE_NO, EXPUNGE_STOP, EXPUNGE_YES
DEFAULT_LIFETIME, DEFAULT_MAX_SIZE
Constructor and Description |
---|
ResourceCache(Loader<K,V> loader)
Constructor.
|
ResourceCache(Loader<K,V> loader,
int initsz)
Constructor.
|
Modifier and Type | Method and Description |
---|---|
void |
clear()
It is OK to clear up all cached resources if you don't want to cache it.
|
V |
get(java.lang.Object src)
Returns the resource, or null if not found.
|
int |
getCheckPeriod()
Returns how often to check (unit=milliseconds).
|
Loader<K,V> |
getLoader()
Returns the loader.
|
java.lang.Object |
put(java.lang.Object src,
java.lang.Object val)
Don't use it.
|
java.lang.Object |
remove(java.lang.Object src)
It is OK to remove the resource if you don't want to cache it.
|
ResourceCache |
setCheckPeriod(int checkPeriod)
Sets how often to check (unit=milliseconds).
|
canExpunge, clone, containsKey, containsKeyWithoutExpunge, containsValue, entrySet, equals, expunge, getLifetime, getMaxSize, getWithoutExpunge, hashCode, isEmpty, isEmptyWithoutExpunge, keySet, onExpunge, putAll, setLifetime, setMaxSize, shallExpunge, size, sizeWithoutExpunge, toString, values
public ResourceCache(Loader<K,V> loader)
loader
- the loader to load resourcepublic int getCheckPeriod()
Default: 5000
public ResourceCache setCheckPeriod(int checkPeriod)
public V get(java.lang.Object src)
public java.lang.Object put(java.lang.Object src, java.lang.Object val)
put
in interface java.util.Map<java.lang.Object,java.lang.Object>
put
in interface Cache<java.lang.Object,java.lang.Object>
put
in class CacheMap<java.lang.Object,java.lang.Object>
java.lang.UnsupportedOperationException
- if calledpublic java.lang.Object remove(java.lang.Object src)
public void clear()
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