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 org.apache.log4j.Logger;

import org.hibernate.annotations.Cascade;

import org.hibernate.annotations.CascadeType;

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

@Entity

public class DerivationEvent extends EventBase{

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

	private Set<SpecimenOrObservationBase> originals = new HashSet<SpecimenOrObservationBase>();

	protected Set<DerivedUnitBase> derivatives = new HashSet<DerivedUnitBase>();

	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="derivedFrom")

	@Cascade({CascadeType.SAVE_UPDATE})

	public Set<DerivedUnitBase> getDerivatives() {

		return derivatives;

	}

	protected void setDerivatives(Set<DerivedUnitBase> derivatives) {

		this.derivatives = derivatives;

	}

	public void addDerivative(DerivedUnitBase derivative) {

		derivative.setDerivedFrom(this);

	}

	public void removeDerivative(DerivedUnitBase derivative) {

		this.derivatives.remove(derivative);

	}

	@ManyToOne

	public DerivationEventType getType() {

		return type;

	}

	public void setType(DerivationEventType type) {

		this.type = type;

	}

}