EDIT

/**

* Copyright (C) 2007 EDIT

* European Distributed Institute of Taxonomy

* http://www.e-taxonomy.eu

*

* The contents of this file are subject to the Mozilla Public License Version 1.1

* See LICENSE.TXT at the top of this package for the full license terms.

*/

package eu.etaxonomy.cdm.model.name;

import java.io.Serializable;

import java.util.ArrayList;

import java.util.Collections;

import java.util.Comparator;

import java.util.List;

import java.util.Set;

import eu.etaxonomy.cdm.model.taxon.HomotypicGroupTaxonComparator;

import eu.etaxonomy.cdm.model.taxon.TaxonBase;

import eu.etaxonomy.cdm.model.taxon.TaxonComparator;

public class HomotypicalGroupComparator implements

		Comparator<HomotypicalGroup>, Serializable {

    private static final long serialVersionUID = -676465815899137107L;

    @Override

	public int compare(HomotypicalGroup group1, HomotypicalGroup group2) {

		TaxonBase<?> firstTypified1 = null;

		TaxonBase<?> firstTypified2 = null;

		TaxonComparator taxComparator = new HomotypicGroupTaxonComparator(null);

		Set<TaxonNameBase> typifiedNames1 = group1.getTypifiedNames();

		List<TaxonBase> taxonBasesOfTypifiedNames = new ArrayList<TaxonBase>();

		for (TaxonNameBase<?,?> typifiedName:typifiedNames1){

			if (!typifiedName.getTaxonBases().isEmpty()){

				taxonBasesOfTypifiedNames.add(typifiedName.getTaxonBases().iterator().next());

			}

		}

		Collections.sort(taxonBasesOfTypifiedNames, taxComparator);

		firstTypified1 = taxonBasesOfTypifiedNames.get(0);

		Set<TaxonNameBase> typifiedNames2 = group2.getTypifiedNames();

		taxonBasesOfTypifiedNames = new ArrayList<TaxonBase>();

		for (TaxonNameBase<?,?> typifiedName:typifiedNames2){

			if (!typifiedName.getTaxonBases().isEmpty()){

				taxonBasesOfTypifiedNames.add(typifiedName.getTaxonBases().iterator().next());

			}

		}

		Collections.sort(taxonBasesOfTypifiedNames, taxComparator);

		firstTypified2 = taxonBasesOfTypifiedNames.get(0);

		return taxComparator.compare(firstTypified1, firstTypified2);

	}

}