Package net.ontopia.topicmaps.utils

Class ScopedIFComparator<T extends ScopedIF>

java.lang.Object

net.ontopia.topicmaps.utils.ScopedIFComparator<T>

All Implemented Interfaces:

Comparator<T>

Direct Known Subclasses:

TopicNameComparator

public class ScopedIFComparator<T extends ScopedIF>
extends Object
implements Comparator<T>

INTERNAL: Comparator that compares ScopedIF objects based on their applicability in the specified scope.

This comparator may only be used with objects that are implementations of ScopedIF. The default subcomparator is LexicalComparator.CASE_SENSITIVE.

Technique:

1. Compare the number of matching themes for each of the objects. The more matching themes, the higher ranked.
2. Compare by number of themes specified on objects. The fewer themes, the higher ranked.
3. If subcomparator doesn't exist they're ranked equally.
4. Use subcomparator to compare them.

Field Summary

Fields

Modifier and Type	Field	Description
protected TopicIF[]	scope
protected Comparator<? super T>	subcomparator

Constructor Summary

Constructors

Constructor	Description
ScopedIFComparator()
ScopedIFComparator(Collection<TopicIF> scope)
ScopedIFComparator(Collection<TopicIF> scope, Comparator<? super T> subcomparator)

Method Summary

Modifier and Type	Method	Description
int	compare(T obj1, T obj2)	INTERNAL: Compares the two ScopedIF objects for their applicability in the scope specified in the constructor.

Methods inherited from class java.lang.Object

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

Methods inherited from interface java.util.Comparator

equals, reversed, thenComparing, thenComparing, thenComparing, thenComparingDouble, thenComparingInt, thenComparingLong

Field Details

scope

protected TopicIF[] scope

subcomparator

protected Comparator<? super T extends ScopedIF> subcomparator

Constructor Details

ScopedIFComparator

public ScopedIFComparator()

ScopedIFComparator

public ScopedIFComparator(Collection<TopicIF> scope)

ScopedIFComparator

public ScopedIFComparator(Collection<TopicIF> scope,
 Comparator<? super T> subcomparator)

Method Details

compare

public int compare(T obj1,
 T obj2)

INTERNAL: Compares the two ScopedIF objects for their applicability in the scope specified in the constructor.

Specified by:

compare in interface Comparator<T extends ScopedIF>

Parameters:

obj1 - An object implementing ScopedIF.

obj2 - An object implementing ScopedIF.

Returns:

See Comparator.compare(Object,Object)