urv.olsr.data
Class ExpiringEntryTable<K,V>

java.lang.Object
  java.util.Dictionary<K,V>
      java.util.Hashtable<K,java.lang.Integer>
          urv.olsr.data.ExpiringEntryTable<K,V>

All Implemented Interfaces:

java.io.Serializable, java.lang.Cloneable, java.util.Map<K,java.lang.Integer>

Direct Known Subclasses:

DuplicateTable, NeighborTable, TemporalNodeTable, TopologyInformationBaseTable

public abstract class ExpiringEntryTable<K,V>
extends java.util.Hashtable<K,java.lang.Integer>

Table which stores some information that may eventually expire if no updates are received during a certain time span The access to the table is synchronized

Author:

Marcel Arrufat Arias

See Also:

Serialized Form

Constructor Summary

ExpiringEntryTable()
Creates a new table that will remove an entry which has not receive an update in expiringTime milliseconds

Method Summary

void	addEntryWithTimestamp(K key, V value, int timestamp) Adds a new entry in the table Mark the entry as information up-to-date
void	decreaseTimeAndProcessEntries(long refreshTime) Decreases the valid time for all entries and removes the ones which exceed the maximum time
V	getEntry(K key) Return the entry corresponding with the given key
java.lang.Object	getLock()
java.util.Set<K>	keySet()
abstract void	onTableChange()
void	overwriteEntryWithTimestamp(K key, V value, int timestamp) Overwrite an existing entry in the table Mark the entry as information up-to-date
void	removeEntry(K key) Removes an entry from the table
java.lang.String	toString()
void	updateTimestampInEntry(K key, int msec)

Methods inherited from class java.util.Hashtable

clear, clone, contains, containsKey, containsValue, elements, entrySet, equals, get, hashCode, isEmpty, keys, put, putAll, rehash, remove, size, values

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, wait, wait, wait

Constructor Detail

ExpiringEntryTable

public ExpiringEntryTable()

Creates a new table that will remove an entry which has not receive an update in expiringTime milliseconds

Parameters:

expiringTime -

Method Detail

keySet

public java.util.Set<K> keySet()

Specified by:

keySet in interface java.util.Map<K,java.lang.Integer>

Overrides:

keySet in class java.util.Hashtable<K,java.lang.Integer>

toString

public java.lang.String toString()

Overrides:

toString in class java.util.Hashtable<K,java.lang.Integer>

addEntryWithTimestamp

public void addEntryWithTimestamp(K key,
                                  V value,
                                  int timestamp)

Adds a new entry in the table Mark the entry as information up-to-date

Parameters:

key -

value -

timestamp - the validity time of this entry in milliseconds

decreaseTimeAndProcessEntries

public void decreaseTimeAndProcessEntries(long refreshTime)

Decreases the valid time for all entries and removes the ones which exceed the maximum time

Parameters:

refreshTime -

getEntry

public V getEntry(K key)

Return the entry corresponding with the given key

Parameters:

key -

onTableChange

public abstract void onTableChange()

overwriteEntryWithTimestamp

public void overwriteEntryWithTimestamp(K key,
                                        V value,
                                        int timestamp)

Overwrite an existing entry in the table Mark the entry as information up-to-date

Parameters:

key -

value -

timestamp - the validity time of this entry in milliseconds

removeEntry

public void removeEntry(K key)

Removes an entry from the table

Parameters:

key -

updateTimestampInEntry

public void updateTimestampInEntry(K key,
                                   int msec)

getLock

public java.lang.Object getLock()

Returns:

Returns the lock.