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.term;

import java.util.HashSet;

import java.util.Set;

import java.util.UUID;

import javax.persistence.Entity;

import javax.persistence.Transient;

import javax.validation.constraints.NotNull;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlType;

import org.apache.logging.log4j.LogManager;import org.apache.logging.log4j.Logger;

import org.hibernate.envers.Audited;

/**

 * @author a.mueller

 * @since 07.03.2019

 *

 * @param <T>

 */

@XmlAccessorType(XmlAccessType.FIELD)

@XmlType(name = "TermTree", propOrder = {

})

@XmlRootElement(name = "TermTree")

@Entity

@Audited

public class TermGraph <T extends DefinedTermBase>

            extends TermGraphBase<T, TermRelation<T>> {

	private static final long serialVersionUID = -6713834139003172735L;

	private static final Logger logger = LogManager.getLogger(TermGraph.class);

//******************** FACTORY METHODS ******************************************/

    /**

     * Creates a new term collection instance for the given term type

     * with an empty {@link #getRoot() root node}.

     * @param termType the {@link TermType term type}, must not be null

     */

    public static <T extends DefinedTermBase<T>> TermGraph<T> NewInstance(@NotNull TermType termType){

        return new TermGraph<>(termType);

    }

	/**

	 * Creates a new TermGraph instance with a given uuid.

	 * @param termType

	 * @param uuid

	 * @return

	 */

	public static <T extends DefinedTermBase<T>> TermGraph<T> NewInstance(@NotNull TermType termType, UUID uuid){

		TermGraph<T> result =  new TermGraph<>(termType);

		result.setUuid(uuid);

		return result;

	}

// ******************** CONSTRUCTOR *************************************/

    //TODO needed?

    @Deprecated

    protected TermGraph(){}

	/**

	 * Class constructor: creates a new feature tree instance with an empty

	 * {@link #getRoot() root node}.

	 */

	protected TermGraph(TermType termType) {

        super(termType);

	}

// ****************** GETTER / SETTER **********************************/

//******************** METHODS ***********************************************/

	/**

	 * Computes a set of distinct terms that are present in this term tree

	 *

	 * @return

	 */

	@Override

    @Transient

	public Set<T> getDistinctTerms(){

	    Set<T> result = new HashSet<>();

	    for (TermRelation<T> rel : getTermRelations()){

	        result.add(rel.getTerm());

	        result.add(rel.getToTerm());

	    }

	    result.remove(null);  //just in case

	    return result;

	}

//*********************** CLONE ********************************************************/

	/**

	 * Clones <i>this</i> {@link TermGraph}. This is a shortcut that enables to create

	 * a new instance that differs only slightly from <i>this</i> graph by

	 * modifying only some of the attributes.

	 * {@link TermRelation Term relations} always belong only to one tree, so all

	 * {@link TermRelation Term relations} are cloned to build

	 * the new {@link TermGraph}

	 *

	 * @see java.lang.Object#clone()

	 */

	@Override

	public TermGraph<T> clone() {

		try {

		    TermGraph<T> result = (TermGraph<T>)super.clone();

			return result;

		}catch (CloneNotSupportedException e) {

            String message = "Clone not possible. Object does not implement cloneable";

            logger.warn(message);

            throw new RuntimeException(message);

		}

	}

}