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// $Id$
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/**
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* Copyright (C) 2007 EDIT
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* European Distributed Institute of Taxonomy
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* http://www.e-taxonomy.eu
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*
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* The contents of this file are subject to the Mozilla Public License Version 1.1
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* See LICENSE.TXT at the top of this package for the full license terms.
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*/
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package eu.etaxonomy.cdm.model.description;
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import java.util.HashSet;
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import java.util.Iterator;
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import java.util.List;
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import java.util.Set;
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import javax.persistence.Entity;
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import javax.persistence.FetchType;
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import javax.persistence.ManyToMany;
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import javax.persistence.ManyToOne;
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import javax.persistence.OneToMany;
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import javax.persistence.Transient;
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import javax.validation.constraints.NotNull;
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import javax.xml.bind.annotation.XmlAccessType;
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import javax.xml.bind.annotation.XmlAccessorType;
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import javax.xml.bind.annotation.XmlElement;
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import javax.xml.bind.annotation.XmlElementWrapper;
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import javax.xml.bind.annotation.XmlIDREF;
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import javax.xml.bind.annotation.XmlRootElement;
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import javax.xml.bind.annotation.XmlSchemaType;
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import javax.xml.bind.annotation.XmlType;
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import org.apache.log4j.Logger;
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import org.hibernate.annotations.Cascade;
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import org.hibernate.annotations.CascadeType;
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import org.hibernate.envers.Audited;
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import eu.etaxonomy.cdm.model.common.AnnotatableEntity;
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import eu.etaxonomy.cdm.model.common.Language;
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import eu.etaxonomy.cdm.model.common.Representation;
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/**
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*
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* The working set class allows the demarcation of a set of descriptions
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* associated with representations and a set of features and their
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* dependencies.
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*
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* @author h.fradin
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* @created 12.08.2009
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* @version 1.0
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*/
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@XmlAccessorType(XmlAccessType.FIELD)
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@XmlType(name = "WorkingSet", propOrder = {
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"representations",
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"descriptiveSystem",
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"descriptions"
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})
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@XmlRootElement(name = "WorkingSet")
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@Entity
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@Audited
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public class WorkingSet extends AnnotatableEntity {
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private static final long serialVersionUID = 3256448866757415686L;
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private static final Logger logger = Logger.getLogger(WorkingSet.class);
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@XmlElementWrapper(name = "Representations")
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@XmlElement(name = "Representation")
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@OneToMany(fetch=FetchType.EAGER)
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@Cascade( { CascadeType.SAVE_UPDATE, CascadeType.MERGE, CascadeType.DELETE })
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private Set<Representation> representations = new HashSet<Representation>();
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@XmlElement(name = "DescriptiveSystem")
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@XmlIDREF
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@XmlSchemaType(name = "IDREF")
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@ManyToOne(fetch = FetchType.LAZY)
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@Cascade({CascadeType.SAVE_UPDATE,CascadeType.MERGE})
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private FeatureTree descriptiveSystem;
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@XmlElementWrapper(name = "Descriptions")
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@XmlElement(name = "Description")
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@XmlIDREF
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@XmlSchemaType(name = "IDREF")
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@ManyToMany(fetch = FetchType.LAZY)
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@Cascade({CascadeType.SAVE_UPDATE,CascadeType.MERGE})
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@NotNull
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private Set<DescriptionBase> descriptions = new HashSet<DescriptionBase>();
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/**
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* Class constructor: creates a new empty working set instance.
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*/
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protected WorkingSet() {
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super();
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}
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/**
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* Creates a new empty working set instance.
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*/
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public static WorkingSet NewInstance(){
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return new WorkingSet();
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}
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public Set<Representation> getRepresentations() {
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return this.representations;
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}
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public void addRepresentation(Representation representation) {
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this.representations.add(representation);
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}
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public void removeRepresentation(Representation representation) {
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this.representations.remove(representation);
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}
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public Representation getRepresentation(Language lang) {
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for (Representation repr : representations){
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Language reprLanguage = repr.getLanguage();
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if (reprLanguage != null && reprLanguage.equals(lang)){
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return repr;
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}
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}
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return null;
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}
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/**
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* @see #getPreferredRepresentation(Language)
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* @param language
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* @return
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*/
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public Representation getPreferredRepresentation(Language language) {
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Representation repr = getRepresentation(language);
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if(repr == null){
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repr = getRepresentation(Language.DEFAULT());
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}
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if(repr == null){
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repr = getRepresentations().iterator().next();
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}
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return repr;
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}
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/**
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* Returns the Representation in the preferred language. Preferred languages
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* are specified by the parameter languages, which receives a list of
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* Language instances in the order of preference. If no representation in
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* any preferred languages is found the method falls back to return the
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* Representation in Language.DEFAULT() and if necessary further falls back
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* to return the first element found if any.
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*
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* TODO think about this fall-back strategy &
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* see also {@link TextData#getPreferredLanguageString(List)}
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*
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* @param languages
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* @return
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*/
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public Representation getPreferredRepresentation(List<Language> languages) {
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Representation repr = null;
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if(languages != null){
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for(Language language : languages) {
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repr = getRepresentation(language);
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if(repr != null){
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return repr;
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}
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}
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}
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if(repr == null){
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repr = getRepresentation(Language.DEFAULT());
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}
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if(repr == null){
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Iterator<Representation> it = getRepresentations().iterator();
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if(it.hasNext()){
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repr = getRepresentations().iterator().next();
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}
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}
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return repr;
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}
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@Transient
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public String getLabel() {
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if(getLabel(Language.DEFAULT())!=null){
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Representation repr = getRepresentation(Language.DEFAULT());
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return (repr == null)? null :repr.getLabel();
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}else{
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for (Representation r : representations){
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return r.getLabel();
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}
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}
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return super.getUuid().toString();
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}
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public String getLabel(Language lang) {
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Representation repr = this.getRepresentation(lang);
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return (repr == null) ? null : repr.getLabel();
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}
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public void setLabel(String label){
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Language lang = Language.DEFAULT();
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setLabel(label, lang);
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}
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public void setLabel(String label, Language language){
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if (language != null){
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Representation repr = getRepresentation(language);
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if (repr != null){
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repr.setLabel(label);
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}else{
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repr = Representation.NewInstance(null, label, null, language);
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}
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this.addRepresentation(repr);
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}
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}
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public FeatureTree getDescriptiveSystem() {
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return descriptiveSystem;
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}
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public void setDescriptiveSystem(FeatureTree descriptiveSystem) {
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this.descriptiveSystem = descriptiveSystem;
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}
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/**
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* Returns the {@link DescriptionBase descriptions} of
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* <i>this</i> working set.
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*
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* @see #addDescription(DescriptionBase)
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* @see #removeDescription(DescriptionBase)
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*/
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public Set<DescriptionBase> getDescriptions() {
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return descriptions;
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}
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/**
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* Adds an existing {@link DescriptionBase description} to the set of
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* {@link #getDescriptions() descriptions} of <i>this</i>
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* working set.
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*
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* @param description the description to be added to <i>this</i> working set
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* @see #getDescriptions()
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* @see WorkingSet#addDescription(DescriptionBase)
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*/
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public boolean addDescription(DescriptionBase description) {
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boolean result = this.descriptions.add(description);
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if (! description.getWorkingSets().contains(this)){
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description.addWorkingSet(this);
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}
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return result;
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}
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/**
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* Removes one element from the set of {@link #getDescriptions() descriptions} involved
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* in <i>this</i> working set.<BR>
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*
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* @param description the description which should be removed
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* @see #getDescriptions()
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* @see #addDescription(DescriptionBase)
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* @see WorkingSet#removeDescription(DescriptionBase)
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*/
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public boolean removeDescription(DescriptionBase description) {
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boolean result = this.descriptions.remove(description);
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if (description.getWorkingSets().contains(this)){
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description.removeWorkingSet(this);
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}
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return result;
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}
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//*********************** CLONE ********************************************************/
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/**
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* Clones <i>this</i> WorkingSet. This is a shortcut that enables to create
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* a new instance that differs only slightly from <i>this</i> WorkingSet by
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* modifying only some of the attributes.
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* The descriptions and the descriptive system are the same, the representations
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* are cloned.
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*
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* @see eu.etaxonomy.cdm.model.common.AnnotatableEntity#clone()
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* @see java.lang.Object#clone()
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*/
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@Override
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public Object clone() {
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WorkingSet result;
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try {
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result = (WorkingSet)super.clone();
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result.descriptions = new HashSet<DescriptionBase>();
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for (DescriptionBase desc: this.descriptions){
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result.addDescription(desc);
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}
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result.representations = new HashSet<Representation>();
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for (Representation rep : this.representations){
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result.addRepresentation((Representation)rep.clone());
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}
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return result;
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}catch (CloneNotSupportedException e) {
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logger.warn("Object does not implement cloneable");
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e.printStackTrace();
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return null;
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}
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}
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}
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