EDIT

/**

* Copyright (C) 2020 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.persistence.dto;

import java.net.URI;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.HashSet;

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.UUID;

import eu.etaxonomy.cdm.model.description.Character;

import eu.etaxonomy.cdm.model.term.Representation;

import eu.etaxonomy.cdm.model.term.TermNode;

import eu.etaxonomy.cdm.model.term.TermTree;

import eu.etaxonomy.cdm.model.term.TermType;

/**

 * @author k.luther

 * @since 07.01.2020

 */

public class TermTreeDto extends TermCollectionDto {

    private static final long serialVersionUID = -7223363599985320531L;

    private TermNodeDto root;

    public static TermTreeDto fromTree(TermTree tree){

        TermTreeDto dto = new TermTreeDto(tree.getUuid(), tree.getRepresentations(), tree.getTermType(), tree.getRoot(), tree.getTitleCache(), tree.isAllowDuplicates(), tree.isOrderRelevant(), tree.isFlat() );

        return dto;

    }

    public TermTreeDto(UUID uuid, Set<Representation> representations, TermType termType, String titleCache, boolean isAllowDuplicates, boolean isOrderRelevant, boolean isFlat) {

        super(uuid, representations, termType, titleCache, isAllowDuplicates, isOrderRelevant, isFlat);

    }

    public TermTreeDto(UUID uuid, Set<Representation> representations, TermType termType, TermNode root, String titleCache, boolean isAllowDuplicates, boolean isOrderRelevant, boolean isFlat) {

        super(uuid, representations, termType, titleCache, isAllowDuplicates, isOrderRelevant, isFlat);

        this.root = new TermNodeDto(null, 0, this, root.getUuid(), root.treeIndex(), root.getPath());

    }

    public TermNodeDto getRoot() {

       return root;

    }

    public void setRoot(TermNodeDto root) {

        this.root = root;

    }

    public boolean removeChild(TermNodeDto nodeDto){

        return this.root.removeChild(nodeDto, true);

    }

    public static String getTermTreeDtoSelect(){

        String[] result = createSqlParts();

        return result[0]+result[1]+result[2];

    }

    private static String[] createSqlParts() {

        String sqlSelectString = ""

                + "select a.uuid, "

                + "r, "

                + "a.termType,  "

                + "a.uri,  "

                + "root,  "

                + "a.titleCache, "

                + "a.allowDuplicates, "

                + "a.orderRelevant, "

                + "a.isFlat ";

        String sqlFromString =   "from TermTree as a ";

        String sqlJoinString =  "LEFT JOIN a.root as root "

               + "LEFT JOIN a.representations AS r "

                ;

        String[] result = new String[3];

        result[0] = sqlSelectString;

        result[1] = sqlFromString;

        result[2] = sqlJoinString;

        return result;

    }

    public static List<TermTreeDto> termTreeDtoListFrom(List<Object[]> results) {

        List<TermTreeDto> dtos = new ArrayList<>(); // list to ensure order

        // map to handle multiple representations/media/vocRepresentation because of LEFT JOIN

        Map<UUID, TermTreeDto> dtoMap = new HashMap<>(results.size());

        for (Object[] elements : results) {

            UUID uuid = (UUID)elements[0];

            if(dtoMap.containsKey(uuid)){

                // multiple results for one term -> multiple (voc) representation/media

                if(elements[1]!=null){

                    dtoMap.get(uuid).addRepresentation((Representation)elements[1]);

                }

            } else {

                // term representation

                Set<Representation> representations = new HashSet<>();

                if(elements[1] instanceof Representation) {

                    representations = new HashSet<>(1);

                    representations.add((Representation)elements[1]);

                }

                TermTreeDto termTreeDto = new TermTreeDto(

                        uuid,

                        representations,

                        (TermType)elements[2],

                        (String)elements[5],

                        (boolean)elements[6],

                        (boolean)elements[7],

                        (boolean)elements[8]);

                termTreeDto.setUri((URI)elements[3]);

                if (termTreeDto.getTermType().equals(TermType.Character)){

                    termTreeDto.setRoot(CharacterNodeDto.fromTermNode((TermNode<Character>) elements[4], termTreeDto));

                }else {

                    termTreeDto.setRoot(TermNodeDto.fromNode((TermNode)elements[4], termTreeDto));

                }

                dtoMap.put(uuid, termTreeDto);

                dtos.add(termTreeDto);

            }

        }

        return dtos;

    }

}