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.taxon;

import javax.persistence.Entity;

import javax.persistence.FetchType;

import javax.persistence.ManyToOne;

import javax.persistence.Transient;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlIDREF;

import javax.xml.bind.annotation.XmlRootElement;

import javax.xml.bind.annotation.XmlSchemaType;

import javax.xml.bind.annotation.XmlType;

import org.apache.log4j.Logger;

import org.hibernate.envers.Audited;

import org.hibernate.search.annotations.Indexed;

import org.hibernate.search.annotations.IndexedEmbedded;

import eu.etaxonomy.cdm.model.common.RelationshipBase;

import eu.etaxonomy.cdm.model.reference.Reference;

/**

 * The class representing a relationship between two {@link Taxon ("accepted/correct") taxa}.

 * This includes a {@link TaxonRelationshipType taxon relationship type} (for instance "congruent to" or

 * "misapplied name for").

 * <P>

 * This class corresponds in part to: <ul>

 * <li> Relationship according to the TDWG ontology

 * <li> TaxonRelationship according to the TCS

 * </ul>

 *

 * @author m.doering

 * @created 08-Nov-2007 13:06:58

 */

@XmlAccessorType(XmlAccessType.FIELD)

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

    "relatedFrom",

    "relatedTo",

    "type"

})

@XmlRootElement(name = "TaxonRelationship")

@Entity

@Audited

@Indexed(index = "eu.etaxonomy.cdm.model.taxon.TaxonRelationship")

public class TaxonRelationship

        extends RelationshipBase<Taxon, Taxon, TaxonRelationshipType> {

    private static final long serialVersionUID = 1378437971941534653L;

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

    @XmlElement(name = "RelatedFrom")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch=FetchType.EAGER)

//    @Cascade({CascadeType.SAVE_UPDATE, CascadeType.MERGE})

    @IndexedEmbedded(includeEmbeddedObjectId=true, depth=1)

    private Taxon relatedFrom;

    @XmlElement(name = "RelatedTo")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch=FetchType.EAGER)

//  @Cascade({CascadeType.SAVE_UPDATE, CascadeType.MERGE})

    @IndexedEmbedded(includeEmbeddedObjectId=true, depth=1)

    private Taxon relatedTo;

    @XmlElement(name = "Type")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch=FetchType.EAGER)

    @IndexedEmbedded(depth=1)

    private TaxonRelationshipType type;

    /**

     * @deprecated for hibernate only, don't use

     */

    @Deprecated

    private TaxonRelationship(){}

    /**

     * Class constructor: creates a new taxon relationship instance (with the

     * given "accepted/valid" {@link Taxon taxa}, the given {@link TaxonRelationshipType taxon relationship type}

     * and with the {@link eu.etaxonomy.cdm.model.reference.Reference reference source} on which the relationship

     * assertion is based). Moreover the new taxon relationship will be added to

     * the respective sets of taxon relationships assigned to both taxa.

     *

     * @param from 						the taxon instance to be involved as a source in the new taxon relationship

     * @param to						the taxon instance to be involved as a target in the new taxon relationship

     * @param type						the taxon relationship type of the new taxon relationship

     * @param citation					the reference source for the new taxon relationship

     * @param citationMicroReference	the string with the details describing the exact localisation within the reference

     * @see 							eu.etaxonomy.cdm.model.common.RelationshipBase

     */

    protected TaxonRelationship(Taxon from, Taxon to, TaxonRelationshipType type, Reference citation, String citationMicroReference) {

        super(from, to, type, citation, citationMicroReference);

    }

    /**

     * Returns the {@link Taxon taxon} involved as a source in <i>this</i>

     * taxon relationship.

     *

     * @see    #getToTaxon()

     * @see    Taxon#getRelationsFromThisTaxon()

     * @see    eu.etaxonomy.cdm.model.common.RelationshipBase#getRelatedFrom()

     * @see    eu.etaxonomy.cdm.model.common.RelationshipBase#getType()

     */

    @Transient

    public Taxon getFromTaxon(){

        return getRelatedFrom();

    }

    /**

     * Sets the given {@link Taxon taxon} as a source in <i>this</i> taxon relationship.

     * Therefore <i>this</i> taxon relationship will be added to the corresponding

     * set of taxon relationships assigned to the given taxon. Furthermore if

     * the given taxon replaces an "old" one <i>this</i> taxon relationship will

     * be removed from the set of taxon relationships assigned to the "old"

     * source taxon.

     *

     * @param fromTaxon	the taxon instance to be set as a source in <i>this</i> taxon relationship

     * @see    			#getFromTaxon()

     */

    public void setFromTaxon(Taxon fromTaxon){

        setRelatedFrom(fromTaxon);

    }

    /**

     * Returns the {@link Taxon taxon} involved as a target in <i>this</i>

     * taxon relationship.

     *

     * @see    #getFromTaxon()

     * @see    Taxon#getRelationsToThisTaxon()

     * @see    eu.etaxonomy.cdm.model.common.RelationshipBase#getRelatedTo()

     * @see    eu.etaxonomy.cdm.model.common.RelationshipBase#getType()

     */

    @Transient

    public Taxon getToTaxon(){

        return getRelatedTo();

    }

    /**

     * Sets the given {@link Taxon taxon} as a target in <i>this</i> taxon relationship.

     * Therefore <i>this</i> taxon relationship will be added to the corresponding

     * set of taxon relationships assigned to the given taxon. Furthermore if

     * the given taxon replaces an "old" one <i>this</i> taxon relationship will

     * be removed from the set of taxon relationships assigned to the "old"

     * target taxon.

     *

     * @param toTaxon	the taxon instance to be set as a target in <i>this</i> taxon relationship

     * @see    			#getToTaxon()

     */

    public void setToTaxon(Taxon toTaxon){

        setRelatedTo(toTaxon);

    }

    // for extra-package access to relatedFrom use getFromTaxon instead

    @Override

    protected Taxon getRelatedFrom() {

        return relatedFrom;

    }

    // for extra-package access to relatedFrom use getToTaxon instead

    @Override

    protected Taxon getRelatedTo() {

        return relatedTo;

    }

    @Override

    public TaxonRelationshipType getType() {

        return type;

    }

    @Override

    protected void setRelatedFrom(Taxon relatedFrom) {

        if (relatedFrom == null){

         //   this.deletedObjects.add(this.relatedFrom);

        }

        this.relatedFrom = relatedFrom;

    }

    @Override

    protected void setRelatedTo(Taxon relatedTo) {

        if (relatedTo == null){

          //  this.deletedObjects.add(this.relatedTo);

        }

        this.relatedTo = relatedTo;

    }

    @Override

    public void setType(TaxonRelationshipType type) {

        this.type = type;

    }

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

    /**

     * Clones <i>this</i> TaxonRelationship. This is a shortcut that enables to create

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

     * modifying only some of the attributes.

     *

     * @see eu.etaxonomy.cdm.model.common.RelationshipBase#clone()

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

     */

    @Override

    public Object clone() {

        TaxonRelationship result;

        try{

            result = (TaxonRelationship) super.clone();

            //no changes to relatedFrom, relatedTo, type

            return result;

        } catch (CloneNotSupportedException e) {

            logger.warn("Object does not implement cloneable");

            e.printStackTrace();

            return null;

        }

    }

}