EDIT

import java.util.ArrayList;

import java.util.Arrays;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.beans.factory.annotation.Qualifier;

     */

    public CdmFilterablePagingProvider<Reference, Reference> inReferencePagingProvider(ReferenceType subReferenceType,

            boolean includeUnspecificTypes) {

        referenceOrderHints.add(OrderHint.ORDER_BY_TITLE_CACHE);

        referenceOrderHints.add(new OrderHint("issn", SortOrder.ASCENDING));

        referenceOrderHints.add(new OrderHint("isbn", SortOrder.ASCENDING));

        CdmFilterablePagingProvider<Reference, Reference> pagingProvider = new CdmFilterablePagingProvider<Reference, Reference>(

                repo.getReferenceService(), MatchMode.BEGINNING, referenceOrderHints);

        if (!inRefTypes.isEmpty()) {

            if (includeUnspecificTypes) {

*/

package eu.etaxonomy.cdm.vaadin.data.validator;

import java.util.Objects;

import com.vaadin.data.Validator;

import com.vaadin.ui.AbstractSelect;

/**

 * @author a.kohlbecker

 * @since Dec 20, 2018

 */

public class InReferenceTypeValidator implements Validator {

    private static final long serialVersionUID = 5704902636623629859L;

    private AbstractSelect referenceTypeSelect;

        this.referenceTypeSelect = referenceTypeSelect;

    }

    @Override

    public void validate(Object value) throws InvalidValueException {

        ReferenceType type = (ReferenceType)referenceTypeSelect.getValue();

        if(value != null){

            Reference inReference = (Reference)value;

            if(!applicableInRefTypes.contains(inReference.getType())){

                throw new InvalidValueException(Objects.toString(inReference.getType(), "[NULL]") + " is not a suitable in-reference type for " + Objects.toString(type, "[NULL]") );

        }

    }

}

import java.util.Arrays;

import java.util.EnumSet;

import java.util.List;

import java.util.UUID;

import org.apache.log4j.Logger;

       }

       if(ToOneRelatedEntityField.class.isAssignableFrom(editorAction.getTarget().getClass())){

           if(editorAction.isAddAction()){

               inReferencePopup = openPopupEditor(ReferencePopupEditor.class, editorAction);

               if(!applicableTypes.isEmpty()){