org.planx.util
Class PersistentMap<K,V>

java.lang.Object
  org.planx.util.PersistentMap<K,V>

public class PersistentMap<K,V>
extends Object

Author:

Kasper Bøgebjerg, Henning Niss, Thomas Ambus

Constructor Summary

PersistentMap(String filename, Streamer<K> s1, Streamer<V> s2)

PersistentMap(String filename, Streamer<K> s1, Streamer<V> s2, boolean isSet)
If isSet is true the Map will ignore values (saves space on disk).

Method Summary

void	close() Flushes all data to persistent storage and releases all resources.
Set<Map.Entry<K,V>>	entrySet()
V	get(K key)
Set<K>	keySet()
void	put(K key, V value)
void	replace(V oldValue, V newValue)
String	toString()
Collection<V>	values()

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

PersistentMap

public PersistentMap(String filename,
                     Streamer<K> s1,
                     Streamer<V> s2)
              throws IOException

Throws:

IOException

PersistentMap

public PersistentMap(String filename,
                     Streamer<K> s1,
                     Streamer<V> s2,
                     boolean isSet)
              throws IOException

If isSet is true the Map will ignore values (saves space on disk).

Throws:

IOException

Method Detail

close

public void close()
           throws IOException

Flushes all data to persistent storage and releases all resources. Further method invocations are illegal.

Throws:

IOException

get

public V get(K key)

put

public void put(K key,
                V value)
         throws IOException

Throws:

IOException

replace

public void replace(V oldValue,
                    V newValue)
             throws IOException

Throws:

IOException

keySet

public Set<K> keySet()

entrySet

public Set<Map.Entry<K,V>> entrySet()

values

public Collection<V> values()

toString

public String toString()

Overrides:

toString in class Object