package org.kuali.ole.editor.keyvalue;
   
   import org.kuali.ole.catalog.bo.OleElectronicLocationAndAccessRelationship;
   import org.kuali.rice.core.api.util.ConcreteKeyValue;
   import org.kuali.rice.core.api.util.KeyValue;
   import org.kuali.rice.krad.keyvalues.KeyValuesBase;
   import org.kuali.rice.krad.service.KRADServiceLocator;
   
   import java.util.ArrayList;
  import java.util.Collection;
  import java.util.List;
  
  /**
   * Relationship used to render the values for Relationship dropdown control.
   */
  public class Relationship extends KeyValuesBase {
      /**
       * This method returns the List of ConcreteKeyValue,
       * ConcreteKeyValue has two arguments elaRelationshipCode and
       * elaRelationshipName.
       * @return   List<KeyValue>
       */
      @Override
      public List<KeyValue> getKeyValues() {
          List<KeyValue> options = new ArrayList<KeyValue>();
          Collection<OleElectronicLocationAndAccessRelationship> oleElectronicLocationAndAccessRelationships =
                  KRADServiceLocator.getBusinessObjectService().findAll(OleElectronicLocationAndAccessRelationship.class);
          options.add(new ConcreteKeyValue("", ""));
          for (OleElectronicLocationAndAccessRelationship type : oleElectronicLocationAndAccessRelationships) {
              options.add(new ConcreteKeyValue(type.getElaRelationshipCode(), type.getElaRelationshipName()));
          }
          return options;
      }
  }