EDIT

/**

* Copyright (C) 2009 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.api.validation.constraint;

import java.util.HashSet;

import java.util.List;

import java.util.Objects;

import java.util.Set;

import java.util.stream.Collectors;

import javax.validation.ConstraintValidator;

import javax.validation.ConstraintValidatorContext;

import org.springframework.beans.factory.annotation.Autowired;

import eu.etaxonomy.cdm.api.service.INameService;

import eu.etaxonomy.cdm.model.name.TaxonName;

import eu.etaxonomy.cdm.validation.annotation.NoDuplicateNames;

public class NoDuplicateNamesValidator implements

		ConstraintValidator<NoDuplicateNames,TaxonName> {

	private static Set<String> includeProperties;

	static {

		includeProperties = new HashSet<>();

		includeProperties.add("genusOrUninomial");

		includeProperties.add("infraGenericEpithet");

		includeProperties.add("specificEpithet");

		includeProperties.add("infraSpecificEpithet");

		includeProperties.add("rank");

//		includeProperties.add("nomenclaturalSource.citation");   //handled in method now since #6581

//		includeProperties.add("nomenclaturalSource.citationMicroReference"); //handled in method now since #6581

		includeProperties.add("basionymAuthorship");

		includeProperties.add("exBasionymAuthorship");

		includeProperties.add("combinationAuthorship");

		includeProperties.add("exCombinationAuthorship");

	}

	private INameService nameService;

	@Autowired

	public void setNameService(INameService nameService) {

		this.nameService = nameService;

	}

	@Override

	public void initialize(NoDuplicateNames noDuplicateNames) { }

    @Override

	public boolean isValid(TaxonName name, ConstraintValidatorContext constraintContext) {

		if(name == null) {

			return true;

		} else {

			List<TaxonName> matchingNames = nameService.list(name, includeProperties, null, null, null, null);

			matchingNames = matchingNames.stream().filter(existing->

			           Objects.equals(existing.getNomenclaturalReference(),name.getNomenclaturalReference())

			        && Objects.equals(existing.getNomenclaturalMicroReference(), name.getNomenclaturalMicroReference())

			        && !existing.equals(name)

			    ).collect(Collectors.toList());

			if(matchingNames.size() > 0) {

			    if(matchingNames.size() == 1 && matchingNames.get(0).equals(name)) {

					return true;

				} else {

			        return false;

				}

			} else {

				return true;

			}

		}

	}

}