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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.model.taxon;
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import java.io.Serializable;
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import java.util.Comparator;
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import java.util.Iterator;
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import java.util.Set;
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import org.apache.log4j.Logger;
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import org.joda.time.DateTime;
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import eu.etaxonomy.cdm.model.name.NomenclaturalStatus;
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import eu.etaxonomy.cdm.model.name.NomenclaturalStatusType;
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import eu.etaxonomy.cdm.model.name.TaxonNameBase;
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import eu.etaxonomy.cdm.model.name.ZoologicalName;
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import eu.etaxonomy.cdm.model.reference.INomenclaturalReference;
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import eu.etaxonomy.cdm.model.reference.Reference;
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/**
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* This class makes available a method to compare two {@link TaxonBase taxa} by
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* comparing the publication dates of the corresponding
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* {@link eu.etaxonomy.cdm.model.name.TaxonNameBase taxon names}.
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*
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* @author a.mueller
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* @created 11.06.2008
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* @version 1.0
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*/
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public class TaxonComparator implements Comparator<TaxonBase>, Serializable {
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private static final Logger logger = Logger.getLogger(TaxonComparator.class);
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/* (non-Javadoc)
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* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
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*/
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/**
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* Returns an integer generated by comparing the
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* {@link eu.etaxonomy.cdm.model.name.INomenclaturalReference#getYear() publication years}
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* of both {@link eu.etaxonomy.cdm.model.name.TaxonNameBase taxon names}
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* used in the given {@link TaxonBase taxa}.
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* Returns a negative value if the publication year corresponding to the
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* first given taxon precedes the publication year corresponding to the
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* second given taxon. Returns a positive value if the contrary is true and
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* 0 if both publication years and the date, when they are created, are identical.
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* In case one of the publication
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* years is "null" and the other is not, the "empty" publication year will
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* be considered to be always preceded by the "not null" publication year.
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* If both publication years are "null" the creation date is used for the comparison
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*
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*
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* @see java.lang.String#compareTo(String)
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* @see java.util.Comparator#compare(java.lang.Object, java.lang.Object)
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*/
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public int compare(TaxonBase taxonBase1, TaxonBase taxonBase2) {
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int result;
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//boolean invalOrNudForTaxon1 = false;
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//boolean invalOrNudForTaxon2 = false;
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boolean invalTaxon1 = false;
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boolean invalTaxon2 = false;
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boolean nudumTaxon1 = false;
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boolean nudumTaxon2 = false;
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//if a taxon has nomenclatural status "nom. inval." or "nom. nud."
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//TODO: Überprüfen!!!
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Set status = taxonBase1.getName().getStatus();
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Iterator iterator = status.iterator();
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if (iterator.hasNext()){
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NomenclaturalStatus nomStatus1 = (NomenclaturalStatus) iterator.next();
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Set status2 = taxonBase2.getName().getStatus();
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iterator = status2.iterator(); // is that right? or better iterator = status2.iterator(); ???
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if (iterator.hasNext()){
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NomenclaturalStatus nomStatus2 = (NomenclaturalStatus)iterator.next();
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/*
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if (nomStatus1.getType().equals(NomenclaturalStatusType.NUDUM()) ||
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nomStatus1.getType().equals(NomenclaturalStatusType.INVALID())){
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invalOrNudForTaxon1 = true;
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}
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if (nomStatus2.getType().equals(NomenclaturalStatusType.NUDUM()) || nomStatus2.getType().equals(NomenclaturalStatusType.INVALID())){
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invalOrNudForTaxon2 = true;
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}
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if (invalOrNudForTaxon1 && !invalOrNudForTaxon2){
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return 1;
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}else if (!invalOrNudForTaxon1 && invalOrNudForTaxon2){
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return -1;
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}
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else{ // both taxon are invalid or nudum
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//result = 0;
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}
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*/
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// #####
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if (nomStatus1.getType().equals(NomenclaturalStatusType.INVALID())){
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invalTaxon1 = true;
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}
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if (nomStatus1.getType().equals(NomenclaturalStatusType.NUDUM())){
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nudumTaxon1 = true;
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}
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if (nomStatus2.getType().equals(NomenclaturalStatusType.INVALID())){
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invalTaxon2 = true;
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}
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if (nomStatus2.getType().equals(NomenclaturalStatusType.NUDUM())){
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nudumTaxon2 = true;
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}
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if (nudumTaxon1 && !nudumTaxon2){
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return 1;
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}else if (nudumTaxon1 && nudumTaxon2){
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//continue
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}else if (invalTaxon1 && !nudumTaxon2){
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if (invalTaxon2){
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//continue
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}else{
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return 1;
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}
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}else if (nudumTaxon2 && !nudumTaxon1){
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return -1;
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}else if(invalTaxon2){
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return -1;
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}
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// #####
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}else{//if taxonbase2.getName().getStatus = NULL and taxonbase2 not
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return 1;
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}
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}else{//if taxonbase1.getName().getStatus = NULL
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iterator = taxonBase2.getName().getStatus().iterator();
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if (!iterator.hasNext()){
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//if (taxonBase2.getName().getStatus() == null){ // both are null, continue checking
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}else{
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return -1;
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}
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}
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Integer intDate1 = getIntegerDate(taxonBase1);
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Integer intDate2 = getIntegerDate(taxonBase2);
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if (intDate1 == null && intDate2 == null){
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result = 0;
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}else if (intDate1 == null){
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return 1;
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}else if (intDate2 == null){
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return -1;
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}else{
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result = intDate1.compareTo(intDate2);
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}
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if (result == 0){
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TaxonNameBase taxName1 = taxonBase1.getName();
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TaxonNameBase taxName2 = taxonBase2.getName();
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return taxName1.compareTo(taxName2);
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}
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if (result == 0){
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DateTime date11 = taxonBase1.getCreated();
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DateTime date12 = taxonBase2.getCreated();
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if (date11 == null && date12 == null) {
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return 0;
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}
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if (date11 == null) {
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return 1;
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}
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if (date12 == null) {
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return -1;
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}
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result = date11.compareTo(date12);
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}
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//for ticket #393 if the publication year is the same, the order is alphabetically
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if (result == 0){
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TaxonNameBase taxName1 = taxonBase1.getName();
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TaxonNameBase taxName2 = taxonBase2.getName();
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return taxName1.compareTo(taxName2);
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}
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return result;
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}
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private Integer getIntegerDate(TaxonBase taxonBase){
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Integer result;
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if (taxonBase == null){
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result = null;
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}else{
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TaxonNameBase name = taxonBase.getName();
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if (name == null){
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result = null;
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}else{
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if (name instanceof ZoologicalName){
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result = (((ZoologicalName)name).getPublicationYear());
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}else{
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Reference ref = (Reference) name.getNomenclaturalReference();
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if (ref == null){
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result = null;
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}else{
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if (ref.getDatePublished() == null){
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if (ref.getInReference() == null){
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result = null;
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}else{
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result = ref.getInReference().getDatePublished().getStartYear();
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}
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}else{
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result = ref.getDatePublished().getStartYear();
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}
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}
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}
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}
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}
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return result;
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}
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@SuppressWarnings("unchecked")
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@Deprecated
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private String getDate(TaxonBase taxonBase){
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String result = null;
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if (taxonBase == null){
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result = null;
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}else{
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TaxonNameBase name = taxonBase.getName();
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if (name == null){
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result = null;
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}else{
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if (name instanceof ZoologicalName){
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result = String.valueOf(((ZoologicalName)name).getPublicationYear());
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}else{
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INomenclaturalReference ref = name.getNomenclaturalReference();
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if (ref == null){
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result = null;
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}else{
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result = ref.getYear();
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}
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}
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}
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}
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if (result != null){
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result = result.trim();
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}
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if ("".equals(result)){
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result = null;
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}
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return result;
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}
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}
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