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.occurrence;

import java.util.HashSet;

import java.util.Set;

import javax.persistence.Entity;

import javax.persistence.ManyToMany;

import javax.persistence.ManyToOne;

import javax.persistence.OneToMany;

import javax.xml.bind.annotation.XmlAccessType;

import javax.xml.bind.annotation.XmlAccessorType;

import javax.xml.bind.annotation.XmlElement;

import javax.xml.bind.annotation.XmlElementWrapper;

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.annotations.Cascade;

import org.hibernate.annotations.CascadeType;

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

@XmlAccessorType(XmlAccessType.FIELD)

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

    "originals",

    "derivatives",

    "type"

})

@XmlRootElement(name = "DerivationEvent")

@Entity

public class DerivationEvent extends EventBase implements Cloneable{

	static Logger logger = Logger.getLogger(DerivationEvent.class);

	@XmlElementWrapper(name = "Originals")

	@XmlElement(name = "Original")

	@XmlIDREF

	@XmlSchemaType(name = "IDREF")

	private Set<SpecimenOrObservationBase> originals = getNewOriginalsSet();

	@XmlElementWrapper(name = "Derivatives")

	@XmlElement(name = "Derivative")

	@XmlIDREF

	@XmlSchemaType(name = "IDREF")

	protected Set<DerivedUnitBase> derivatives = getNewDerivatesSet();

	@XmlElement(name = "DerivationEventType")

    @XmlIDREF

    @XmlSchemaType(name = "IDREF")

	private DerivationEventType type;

	/**

	 * Factory method

	 * @return

	 */

	public static DerivationEvent NewInstance(){

		return new DerivationEvent();

	}

	/**

	 * Constructor

	 */

	protected DerivationEvent() {

		super();

	}

	@ManyToMany(mappedBy="derivationEvents")

	@Cascade({CascadeType.SAVE_UPDATE})

	public Set<SpecimenOrObservationBase> getOriginals() {

		return originals;

	}

	protected void setOriginals(Set<SpecimenOrObservationBase> originals) {

		this.originals = originals;

	}

	public void addOriginal(SpecimenOrObservationBase original) {

		if (! this.originals.contains(original)){

			this.originals.add(original);

			original.addDerivationEvent(this);

		}

	}

	public void removeOriginal(SpecimenOrObservationBase original) {

		this.originals.remove(original);

	}

	@OneToMany(mappedBy="derivationEvent")

	@Cascade({CascadeType.SAVE_UPDATE})

	public Set<DerivedUnitBase> getDerivatives() {

		return derivatives;

	}

	protected void setDerivatives(Set<DerivedUnitBase> derivatives) {

		this.derivatives = derivatives;

	}

	public void addDerivative(DerivedUnitBase derivative) {

		if (derivative != null){

			derivative.setDerivedFrom(this);

		}

	}

	public void removeDerivative(DerivedUnitBase derivative) {

		if (derivative != null){

			derivative.setDerivedFrom(null);

		}

	}

	@ManyToOne

	public DerivationEventType getType() {

		return type;

	}

	public void setType(DerivationEventType type) {

		this.type = type;

	}

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

	/** 

	 * Clones <i>this</i> derivation event. This is a shortcut that enables to

	 * create a new instance that differs only slightly from <i>this</i> derivation event

	 * by modifying only some of the attributes.<BR>

	 * This method overrides the clone method from {@link EventBase EventBase}.

	 * 

	 * @see EventBase#clone()

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

	 */

	@Override

	public DerivationEvent clone(){

		try{

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

			//type

			result.setType(this.getType());

			//derivates

			Set<DerivedUnitBase> derivates = getNewDerivatesSet();

			derivates.addAll(this.derivatives);

			result.setDerivatives(derivates);

			//originals

			Set<SpecimenOrObservationBase> originals = getNewOriginalsSet();

			originals.addAll(this.originals);

			result.setOriginals(this.getOriginals());

			//no changes to: -

			return result;

		} catch (CloneNotSupportedException e) {

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

			e.printStackTrace();

			return null;

		}

	}

	private static Set<DerivedUnitBase> getNewDerivatesSet(){

		return new HashSet<DerivedUnitBase>();

	}

	private static Set<SpecimenOrObservationBase> getNewOriginalsSet(){

		return new HashSet<SpecimenOrObservationBase>();

	}

}