Package psidev.psi.mi.jami.utils.comparator.xref

Class UnambiguousXrefComparator

java.lang.Object

psidev.psi.mi.jami.utils.comparator.xref.UnambiguousXrefComparator

All Implemented Interfaces:

Comparator<Xref>

Direct Known Subclasses:

ExactXrefComparator

public class UnambiguousXrefComparator
extends Object
implements Comparator<Xref>

Strict Xref comparator It compares first the databases and then the ids (case sensitive) but ignores the version. To compare the databases, it looks first at the identifiers id (the database with identifier will always come first), otherwise it looks at the database shortlabel only. If one database identifier is null, it will always comes after an ExternalIdentifier having a non null database id. Then it will compare the qualifier. To compare the qualifiers, it looks first at the identifiers id if they both exist, otherwise it looks at the qualifier shortnames only. If one qualifier identifier is null, it will always comes after a Xref having a non null qualifiers id. - Two xrefs which are null are equals - The xref which is not null is before null. - Use UnambiguousExternalIdentifierComparator to compare first the database and id. - If both xref databases and ids are the same, compare the qualifiers.

Since:

19/12/12

Version:

$Id$

Author:

Marine Dumousseau (marine@ebi.ac.uk)

Constructor Summary

Constructors

Constructor	Description
UnambiguousXrefComparator()	Constructor for UnambiguousXrefComparator.

Method Summary

Modifier and Type	Method	Description
static boolean	areEquals(Xref xref1, Xref xref2)	Use UnambiguousXrefComparator to know if two xrefs are equals.
int	compare(Xref xref1, Xref xref2)	It compares first the databases and then the ids (case sensitive) but ignores the version.
static int	hashCode(Xref xref)	hashCode

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

Constructor Detail

UnambiguousXrefComparator

public UnambiguousXrefComparator()

Constructor for UnambiguousXrefComparator.

Method Detail

compare

public int compare(Xref xref1,
                   Xref xref2)

It compares first the databases and then the ids (case sensitive) but ignores the version. To compare the databases, it looks first at the identifiers id (the database with identifier will always come first), otherwise it looks at the database shortlabel only. If one database identifier is null, it will always comes after an ExternalIdentifier having a non null database id. Then it will compare the qualifier. To compare the qualifiers, it looks first at the identifiers id if they both exist, otherwise it looks at the qualifier shortnames only. If one qualifier identifier is null, it will always comes after a Xref having a non null qualifiers id. - Two xrefs which are null are equals - The xref which is not null is before null. - Use UnambiguousExternalIdentifierComparator to compare first the database and id. - If both xref databases and ids are the same, compare the qualifiers.

Specified by:

compare in interface Comparator<Xref>

Parameters:

xref1 - a Xref object.

xref2 - a Xref object.

Returns:

a int.

areEquals

public static boolean areEquals(Xref xref1,
                                Xref xref2)

Use UnambiguousXrefComparator to know if two xrefs are equals.

Parameters:

xref1 - a Xref object.

xref2 - a Xref object.

Returns:

true if the two xrefs are equal

hashCode

public static int hashCode(Xref xref)

hashCode

Parameters:

xref - a Xref object.

Returns:

the hashcode consistent with the equals method for this comparator