public class DefaultExpirationPolicy extends Object implements ExpirationPolicy
限定符和类型 | 字段和说明 |
---|---|
static int |
EXPIRATION_IMMEDIATE |
static int |
EXPIRATION_NEVER |
构造器和说明 |
---|
DefaultExpirationPolicy()
Creates a new policy with default settings (expiration in 60 seconds).
|
DefaultExpirationPolicy(int expirationAfter)
Creates a new policy.
|
public static final int EXPIRATION_IMMEDIATE
public static final int EXPIRATION_NEVER
public DefaultExpirationPolicy()
public DefaultExpirationPolicy(int expirationAfter)
expirationAfter
- the expiration in seconds (a negative value means: never expire)public boolean isExpired(org.apache.xmlgraphics.image.loader.cache.TimeStampProvider provider, long timestamp)
isExpired
在接口中 ExpirationPolicy
provider
- the provider for new time stampstimestamp
- the creation time stamp (the semantics of
System.currentTimeMillis()
apply)Copyright 1999-2016 The Apache Software Foundation. All Rights Reserved.