cz.cuni.amis.utils.maps
Class WeakHashQuadMap<PRIMARY_KEY,SECONDARY_KEY,TERTIARY_KEY,QUATERNARY_KEY,ITEM>

java.lang.Object
  java.util.AbstractMap<K,V>
      java.util.WeakHashMap<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>
          cz.cuni.amis.utils.maps.WeakHashQuadMap<PRIMARY_KEY,SECONDARY_KEY,TERTIARY_KEY,QUATERNARY_KEY,ITEM>

Type Parameters:

PRIMARY_KEY -

SECONDARY_KEY -

TERTIARY_KEY -

QUATERNARY_KEY -

ITEM -

All Implemented Interfaces:

java.util.Map<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

public class WeakHashQuadMap<PRIMARY_KEY,SECONDARY_KEY,TERTIARY_KEY,QUATERNARY_KEY,ITEM>
extends java.util.WeakHashMap<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

A 4-level hashMap, the PrimaryKeys are weakly referenced. Get methods of all levels assure that the corresponding maps are created.

Nested Class Summary

Nested classes/interfaces inherited from class java.util.AbstractMap

java.util.AbstractMap.SimpleEntry<K,V>, java.util.AbstractMap.SimpleImmutableEntry<K,V>

Constructor Summary

WeakHashQuadMap()

WeakHashQuadMap(int primaryCapacity, int secondaryCapacity, int tertiaryCapacity, int quaternaryCapacity)

Method Summary

java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>	get(java.lang.Object key)
java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>	get(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey) If the requested secondLevel map does not exist an empty one is created, inserted according to the primaryKey and returned.
java.util.Map<QUATERNARY_KEY,ITEM>	get(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey, TERTIARY_KEY tertiaryKey) If the requested level 3 map does not exist an empty one is created, inserted and returned.
ITEM	get(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey, TERTIARY_KEY tertiaryKey, QUATERNARY_KEY quaternaryKey) Returns null if the mapping is not present.
ITEM	put(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey, TERTIARY_KEY tertiaryKey, QUATERNARY_KEY quaternaryKey, ITEM item) Returns the inserted item.
java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>	remove(java.lang.Object key)
java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>	remove(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey)
java.util.Map<QUATERNARY_KEY,ITEM>	remove(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey, TERTIARY_KEY tertiaryKey)
ITEM	remove(PRIMARY_KEY primaryKey, SECONDARY_KEY secondaryKey, TERTIARY_KEY tertiaryKey, QUATERNARY_KEY quaternaryKey)

Methods inherited from class java.util.WeakHashMap

clear, containsKey, containsValue, entrySet, isEmpty, keySet, put, putAll, size, values

Methods inherited from class java.util.AbstractMap

clone, equals, hashCode, toString

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Map

equals, hashCode

Constructor Detail

WeakHashQuadMap

public WeakHashQuadMap()

WeakHashQuadMap

public WeakHashQuadMap(int primaryCapacity,
                       int secondaryCapacity,
                       int tertiaryCapacity,
                       int quaternaryCapacity)

Method Detail

get

public java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>> get(java.lang.Object key)

Specified by:

get in interface java.util.Map<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

Overrides:

get in class java.util.WeakHashMap<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

get

public java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>> get(PRIMARY_KEY primaryKey,
                                                                          SECONDARY_KEY secondaryKey)

If the requested secondLevel map does not exist an empty one is created, inserted according to the primaryKey and returned.

Parameters:

primaryKey -

secondaryKey -

Returns:

get

public java.util.Map<QUATERNARY_KEY,ITEM> get(PRIMARY_KEY primaryKey,
                                              SECONDARY_KEY secondaryKey,
                                              TERTIARY_KEY tertiaryKey)

If the requested level 3 map does not exist an empty one is created, inserted and returned.

Parameters:

primaryKey -

secondaryKey -

tertiaryKey -

Returns:

get

public ITEM get(PRIMARY_KEY primaryKey,
                SECONDARY_KEY secondaryKey,
                TERTIARY_KEY tertiaryKey,
                QUATERNARY_KEY quaternaryKey)

Returns null if the mapping is not present.

Parameters:

primaryKey -

secondaryKey -

tertiaryKey -

quaternaryKey -

Returns:

put

public ITEM put(PRIMARY_KEY primaryKey,
                SECONDARY_KEY secondaryKey,
                TERTIARY_KEY tertiaryKey,
                QUATERNARY_KEY quaternaryKey,
                ITEM item)

Returns the inserted item.

Parameters:

primaryKey -

secondaryKey -

tertiaryKey -

quaternaryKey -

item -

Returns:

remove

public java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>> remove(java.lang.Object key)

Specified by:

remove in interface java.util.Map<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

Overrides:

remove in class java.util.WeakHashMap<PRIMARY_KEY,java.util.Map<SECONDARY_KEY,java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>>>>

remove

public java.util.Map<TERTIARY_KEY,java.util.Map<QUATERNARY_KEY,ITEM>> remove(PRIMARY_KEY primaryKey,
                                                                             SECONDARY_KEY secondaryKey)

remove

public java.util.Map<QUATERNARY_KEY,ITEM> remove(PRIMARY_KEY primaryKey,
                                                 SECONDARY_KEY secondaryKey,
                                                 TERTIARY_KEY tertiaryKey)

remove

public ITEM remove(PRIMARY_KEY primaryKey,
                   SECONDARY_KEY secondaryKey,
                   TERTIARY_KEY tertiaryKey,
                   QUATERNARY_KEY quaternaryKey)