EDIT

/**

* Copyright (C) 2019 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.reference;

import javax.persistence.Entity;

import javax.persistence.FetchType;

import javax.persistence.ManyToOne;

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.hibernate.envers.Audited;

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

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

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

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

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

/**

 * Class to link to other CdmBase objects within the context of

 * {@link OriginalSourceBase information sources}.

 *

 * @author a.mueller

 * @since 09.11.2019

 */

@XmlAccessorType(XmlAccessType.FIELD)

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

    "description"

})

@XmlRootElement(name = "CdmLinkSource")

@Entity

@Audited

public class CdmLinkSource extends CdmLinkBase {

    private static final long serialVersionUID = 6600576878001716986L;

// // ************* Source ***********************/

//

//    @XmlElement(name = "Source")

//    @XmlIDREF

//    @XmlSchemaType(name = "IDREF")

//    @OneToOne(fetch = FetchType.LAZY, mappedBy="cdmSource")

//    private OriginalSourceBase source;

// **************** Targets ************************/

    @XmlElement(name = "Description")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

    @ManyToOne(fetch = FetchType.LAZY)

    private DescriptionBase<?> description;

// ************************ FACTORY *********************/

    public static CdmLinkSource NewInstance(ICdmTarget target) {

        return new CdmLinkSource(target);

    }

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

    public CdmLinkSource(){}  //maybe protected is enough, needs to be tested for loading

    public CdmLinkSource(ICdmTarget target) {

//        this.source = source;

        setTarget(target);

    }

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

    /**

     * Returns the target object. Throws an {@link IllegalStateException} if no target

     * is defined.

     *

     * @see IntextReference#getTarget()

     */

    public ICdmTarget getTarget() {

        if (taxon != null){

            return CdmBase.deproxy(taxon, Taxon.class);

        }else if (description != null){

            return description;

        }else{

            throw new IllegalStateException("CdmSource has no target object defined");

        }

    }

    //maybe only workaround #9801

    public boolean hasNoTarget(){

        return taxon == null && description == null;

    }

    public void setTarget(ICdmTarget target) {

        target = CdmBase.deproxy(target);

        if (target == null){

            setToNull(); //workaround? #9801

        }else if (target instanceof DescriptionBase<?>){

            this.description = (DescriptionBase<?>)target;

        }else if (target instanceof Taxon){

            this.taxon = (Taxon)target;

        }else{

            throw new IllegalArgumentException("Target class not supported by CdmSource");

        }

    }

    //workaround? #9801

    private void setToNull() {

        this.description = null;

        this.taxon = null;

    }

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

    @Override

    public CdmLinkSource clone() throws CloneNotSupportedException {

        CdmLinkSource result = (CdmLinkSource)super.clone();

        return result;

    }

//    public CdmLinkSource clone(OriginalSourceBase source) {

//        CdmLinkSource result;

//        try {

//            result = (CdmLinkSource)super.clone();

////            result.source = source;

//            return result;

//        } catch (CloneNotSupportedException e) {

//            throw new RuntimeException(e);  //does not happen

//        }

//    }

}