Class MetadataTransientMortalCacheEntry

    • Constructor Detail

      • MetadataTransientMortalCacheEntry

        public MetadataTransientMortalCacheEntry​(java.lang.Object key,
                                                 java.lang.Object value,
                                                 Metadata metadata,
                                                 long now)
      • MetadataTransientMortalCacheEntry

        public MetadataTransientMortalCacheEntry​(java.lang.Object key,
                                                 java.lang.Object value,
                                                 Metadata metadata,
                                                 long lastUsed,
                                                 long created)
    • Method Detail

      • getValue

        public java.lang.Object getValue()
        Description copied from interface: CacheEntry
        Retrieves the value of this entry
        Specified by:
        getValue in interface CacheEntry
        Specified by:
        getValue in interface java.util.Map.Entry
        Returns:
        the value of the entry
      • getLifespan

        public long getLifespan()
        Specified by:
        getLifespan in interface CacheEntry
        Returns:
        retrieves the lifespan of this entry. -1 means an unlimited lifespan.
      • canExpire

        public final boolean canExpire()
        Specified by:
        canExpire in interface InternalCacheEntry
        Returns:
        true if the entry can expire, false otherwise
      • getCreated

        public long getCreated()
        Specified by:
        getCreated in interface CacheEntry
        Returns:
        timestamp when the entry was created
      • isExpired

        public boolean isExpired​(long now)
        Specified by:
        isExpired in interface InternalCacheEntry
        Parameters:
        now - the current time as defined by System.currentTimeMillis() or TimeService.wallClockTime()
        Returns:
        true if the entry has expired; false otherwise
      • isExpired

        public boolean isExpired()
        Specified by:
        isExpired in interface InternalCacheEntry
        Returns:
        true if the entry has expired; false otherwise
      • canExpireMaxIdle

        public boolean canExpireMaxIdle()
        Specified by:
        canExpireMaxIdle in interface InternalCacheEntry
        Returns:
        true if this entry can expire via max idle, false otherwise
      • getExpiryTime

        public final long getExpiryTime()
        Description copied from interface: InternalCacheEntry
        Only used with entries that have a lifespan, this determines when an entry is due to expire.
        Specified by:
        getExpiryTime in interface InternalCacheEntry
        Returns:
        timestamp when the entry is due to expire, or -1 if it doesn't have a lifespan
      • toInternalCacheValue

        public InternalCacheValue toInternalCacheValue()
        Description copied from interface: InternalCacheEntry
        Creates a representation of this entry as an InternalCacheValue. The main purpose of this is to provide a representation that does not have a reference to the key. This is useful in situations where the key is already known or stored elsewhere, making serialization and deserialization more efficient.

        Note that this should not be used to optimize memory overhead, since the saving of an additional reference to a key (a single object reference) does not warrant the cost of constructing an InternalCacheValue. This only makes sense when marshalling is involved, since the cost of marshalling the key again can be sidestepped using an InternalCacheValue if the key is already known/marshalled.

        Specified by:
        toInternalCacheValue in interface InternalCacheEntry
        Returns:
        a new InternalCacheValue encapsulating this InternalCacheEntry's value and expiration information.
      • getLastUsed

        public long getLastUsed()
        Specified by:
        getLastUsed in interface CacheEntry
        Returns:
        timestamp when the entry was last used
      • touch

        public final void touch​(long currentTimeMillis)
        Description copied from interface: InternalCacheEntry
        Updates access timestamps on this instance to a specified time
        Specified by:
        touch in interface InternalCacheEntry
        Parameters:
        currentTimeMillis - the current time as defined by System.currentTimeMillis() or TimeService.wallClockTime()
      • reincarnate

        public final void reincarnate()
        Description copied from interface: InternalCacheEntry
        "Reincarnates" an entry. Essentially, resets the 'created' timestamp of the entry to the current time.
        Specified by:
        reincarnate in interface InternalCacheEntry
      • reincarnate

        public void reincarnate​(long now)
        Description copied from interface: InternalCacheEntry
        "Reincarnates" an entry. Essentially, resets the 'created' timestamp of the entry to the current time.
        Specified by:
        reincarnate in interface InternalCacheEntry
        Parameters:
        now - the current time as defined by System.currentTimeMillis() or TimeService.wallClockTime()
      • getMaxIdle

        public long getMaxIdle()
        Specified by:
        getMaxIdle in interface CacheEntry
        Returns:
        the maximum allowed time for which this entry can be idle, after which it is considered expired.
      • setValue

        public java.lang.Object setValue​(java.lang.Object value)
        Description copied from interface: CacheEntry
        Sets the value of the entry, returning the previous value
        Specified by:
        setValue in interface CacheEntry
        Specified by:
        setValue in interface java.util.Map.Entry
        Parameters:
        value - value to set
        Returns:
        previous value