/**

  * Copyright 2010 The Kuali Foundation Licensed under the

  * Educational Community License, Version 2.0 (the "License"); you may

  * not use this file except in compliance with the License. You may

  * obtain a copy of the License at

  *

  * http://www.osedu.org/licenses/ECL-2.0

  *

  * Unless required by applicable law or agreed to in writing,

  * software distributed under the License is distributed on an "AS IS"

  * BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express

  * or implied. See the License for the specific language governing

  * permissions and limitations under the License.

  */

 package org.kuali.student.common.validator;

 import java.text.SimpleDateFormat;

 import java.util.Date;

 public class ServerDateParser implements DateParser {

         private static ThreadLocal<SimpleDateFormat[]> formats = new ThreadLocal<SimpleDateFormat[]>() {

                 protected SimpleDateFormat[] initialValue() {

                         return new SimpleDateFormat[] {

                                     new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss.SSSZ"), 

                                     new SimpleDateFormat("yyyy-MM-dd"), 

                                     new SimpleDateFormat("yyyy-MMM-dd"),

                                     new SimpleDateFormat("dd-MM-yyyy"),

                                     new SimpleDateFormat("dd-MMM-yyyy")

                     };

                 }

         };

     public Date parseDate(String input) {

         Date result = null;

         for (SimpleDateFormat format : formats.get()) {

                 try {

                     result = format.parse(input);

                 } catch (Exception e) {

                     // just eat it

                 }

                 if (result != null) {

                     break;

                 }

         }

         if (result == null) {

             throw new DateParseException("Invalid date value: " + input);

         }

         return result;

     }

     /**

      * @see org.kuali.student.common.validator.old.DateParser#toString(java.util.Date)

      */

     @Override

     public String toString(Date date) {

         String result = null;

         SimpleDateFormat format = new SimpleDateFormat("yyyy-MM-ddTHH:mm:ss,SSS");

         result = format.format(date);

         return result;        

     }

 }