it.unimo.dbgroup.momis.tools
Class DistanceMapSymmetrical

java.lang.Object
  it.unimo.dbgroup.momis.tools.DistanceMap
      it.unimo.dbgroup.momis.tools.DistanceMapSymmetrical

All Implemented Interfaces:

java.io.Serializable

public class DistanceMapSymmetrical

extends DistanceMap

implements java.io.Serializable

Symmetric Index container for Distance objects.
This class has been designed to handle Distances between objects and provides several ways to retrieve distances.
In this implementation distances are considered symmetrically. This means that d(a,b, 10) and (b,a, 20) are considered identical and mutually over-writing (the one replace the other in this indexing structure);
This choice allows handling of not directed graphs.
This class is based on a asymmetric DistanceMap class

Author:

Alberto Corni, July 2000

See Also:

Serialized Form

Field Summary

Fields inherited from class it.unimo.dbgroup.momis.tools.DistanceMap

Constructor Summary

DistanceMapSymmetrical()
Indexes a set of Distance objects.

DistanceMapSymmetrical(Distance[] distances)
Indexes a set of Distance objects.

DistanceMapSymmetrical(DistanceMap oldMap, java.util.Set preserve)
Clonation method with filter.

DistanceMapSymmetrical(DistanceMapSymmetrical oldMap)
Clonation method.

Method Summary

void	delete(java.lang.Object src, java.lang.Object dst) Removes from the indexing structure all distances from the given src and the given dst.
Distance	get(java.lang.Object src, java.lang.Object dst) Given source and destination object returns the Distance object between them .
static void	main(java.lang.String[] args) Routine used to test the class.
void	put(Distance distance) Add a distance object in the indexing structure. If a distance between the given elements already exists, it is substituted whith the new object.

Methods inherited from class it.unimo.dbgroup.momis.tools.DistanceMap

delete, getAllDistances, getEndingIn, getRelatedTo, getSetOfDestinationElements, getSetOfDistances, getSetOfElements, getSetOfSourceElements, getStartingFrom, putArray, putArrayRestricted, toString, toStringTable

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

DistanceMapSymmetrical

public DistanceMapSymmetrical()

Indexes a set of Distance objects.

DistanceMapSymmetrical

public DistanceMapSymmetrical(Distance[] distances)

Indexes a set of Distance objects.

Parameters:

distances - Distance instance to be indexed.

DistanceMapSymmetrical

public DistanceMapSymmetrical(DistanceMapSymmetrical oldMap)

Clonation method.

DistanceMapSymmetrical

public DistanceMapSymmetrical(DistanceMap oldMap,
                              java.util.Set preserve)

Clonation method with filter.
The new DistanceMap will contain only the element specified in the preserve set.

Parameters:

oldMap - the DistanceMap to copy from.

preserve - the list of element to preserve.

Method Detail

put

public void put(Distance distance)

Add a distance object in the indexing structure.
If a distance between the given elements already exists, it is substituted whith the new object.

Overrides:

put in class DistanceMap

Parameters:

distance - The distance element to add to this indexing structure

get

public Distance get(java.lang.Object src,
                    java.lang.Object dst)

Given source and destination object returns the Distance object between them .

Overrides:

get in class DistanceMap

Returns:

the Distance object between the source and destination objects (remind this class is directional), null if such distance is not present.

delete

public void delete(java.lang.Object src,
                   java.lang.Object dst)

Removes from the indexing structure all distances from the given src and the given dst.

Overrides:

delete in class DistanceMap

main

public static void main(java.lang.String[] args)

Routine used to test the class.

Tests the tools.