package org.kuali.ole.utility.callnumber;
   
   /**
    * Created with IntelliJ IDEA.
    * User: ?
    * Date: 20/2/13
    * Time: 7:31 PM
    * To change this template use File | Settings | File Templates.
    */
  public class NLMCallNumber extends AbstractCallNumber implements CallNumber {
      private static NLMCallNumber ourInstance = null;
      public static NLMCallNumber getInstance() {
          if (null == ourInstance) {
              ourInstance = new NLMCallNumber();
          }
          return ourInstance;
      }
  
      public String getSortableKey(String callNumber) {
          String normalizedCallNumber = CallNumUtils.getLCShelfkey(callNumber, null);
          return normalizedCallNumber;
      }
  
      public boolean isValid(String callNumber) {
          boolean isValid = CallNumUtils.isValidLC(callNumber);
          return isValid;
      }
  }