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package eu.etaxonomy.cdm.vaadin.container;
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import java.util.Arrays;
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import java.util.Collection;
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import java.util.Comparator;
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import java.util.HashSet;
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import java.util.List;
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import java.util.Set;
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import java.util.UUID;
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import java.util.stream.Collectors;
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import com.vaadin.data.util.BeanItemContainer;
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import com.vaadin.server.VaadinSession;
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import eu.etaxonomy.cdm.model.description.PresenceAbsenceTerm;
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import eu.etaxonomy.cdm.model.metadata.CdmPreference;
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import eu.etaxonomy.cdm.model.metadata.PreferencePredicate;
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import eu.etaxonomy.cdm.model.term.TermType;
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import eu.etaxonomy.cdm.vaadin.util.CdmSpringContextHelper;
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import eu.etaxonomy.cdm.vaadin.util.DistributionEditorUtil;
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public class PresenceAbsenceTermContainer extends BeanItemContainer<PresenceAbsenceTerm> {
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private static final long serialVersionUID = -7891310979870159325L;
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private static PresenceAbsenceTermContainer instance;
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private static Collection<PresenceAbsenceTerm> defaultDistributionStatus;
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/**
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* A comparator to sort {@link PresenceAbsenceTerm}s contained in {@link PresenceAbsenceTermContainer}s.
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*
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*/
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static class PresenceAbsenceTermComparator implements Comparator<PresenceAbsenceTerm> {
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@Override
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public int compare(PresenceAbsenceTerm pa1, PresenceAbsenceTerm pa2) {
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return pa1.compareTo(pa2);
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}
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}
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/**
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* Creates and initializes a new {@link PresenceAbsenceTermContainer}.
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* @throws IllegalArgumentException
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*/
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private PresenceAbsenceTermContainer()
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throws IllegalArgumentException {
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super(PresenceAbsenceTerm.class);
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initDataModel();
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}
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/**
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* Initializes the data model of the container and adds all allowed {@link PresenceAbsenceTerm}s to the bean.
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*/
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private void initDataModel() {
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Collection<PresenceAbsenceTerm> distributionStatus = getDistributionStatusList(TERMS_INIT_STRATEGY);
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defaultDistributionStatus = distributionStatus;
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addAll(distributionStatus);
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}
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/**
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* Gets an existing instance of the {@link PresenceAbsenceTermContainer} or creates a new one.
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* @return Instance of {@link PresenceAbsenceTermContainer}.
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*/
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public static PresenceAbsenceTermContainer getInstance(){
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if(instance == null){
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instance = new PresenceAbsenceTermContainer();
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}
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Collection<PresenceAbsenceTerm> distributionStatus = new HashSet<>();
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Object attribute = VaadinSession.getCurrent().getAttribute(DistributionEditorUtil.SATTR_DISTRIBUTION_STATUS);
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if(attribute != null){
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distributionStatus = (Set<PresenceAbsenceTerm>) attribute;
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}
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if(!distributionStatus.isEmpty() && !distributionStatus.equals(defaultDistributionStatus)){
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instance.removeAllItems();
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instance.addAll(distributionStatus);
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defaultDistributionStatus = distributionStatus;
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}
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return instance;
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}
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/**
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* Returns a list of all allowed {@link PresenceAbsenceTerm}s.
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* @param propertyPath The property path to use for calling {@link CdmSpringContextHelper} functions to load {@link PresenceAbsenceTerm}s.
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* @return List of all allowed {@link PresenceAbsenceTerm}s.
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*/
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public static List<PresenceAbsenceTerm> getDistributionStatusList(List<String> propertyPath){
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CdmPreference statusPref = CdmSpringContextHelper.getPreferenceService().findVaadin(PreferencePredicate.AvailableDistributionStatus);
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List<PresenceAbsenceTerm> paList;
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if (statusPref != null){
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List<UUID> uuidList = statusPref.getValueUuidList();
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paList = CdmSpringContextHelper.getTermService().load(uuidList, propertyPath).stream().map(db -> (PresenceAbsenceTerm)db).collect(Collectors.toList());
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paList.sort(new PresenceAbsenceTermComparator());
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return paList;
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}else{
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paList = CdmSpringContextHelper.getTermService().listByTermType(TermType.PresenceAbsenceTerm, null, null, null,propertyPath);
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paList.sort(new PresenceAbsenceTermComparator());
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return paList;
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}
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}
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protected static final List<String> TERMS_INIT_STRATEGY = Arrays.asList(new String []{
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"$",
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"representations",
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});
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}
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