/*

  * Copyright 2006-2008 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.opensource.org/licenses/ecl2.php

  * 

  * 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.rice.kns.util;

 import java.security.GeneralSecurityException;

 import org.apache.ojb.broker.accesslayer.conversions.FieldConversion;

 import org.kuali.rice.kns.service.KNSServiceLocator;

 /**

  * This class calls core service to encrypt values going to the database and decrypt values coming back from the database.

  * 

  * 

  */

 public class OjbKualiEncryptDecryptFieldConversion implements FieldConversion {

     private static final long serialVersionUID = 2450111778124335242L;

     /**

      * @see FieldConversion#javaToSql(Object)

      */

     public Object javaToSql(Object source) {

         Object converted = source;

         try {

                 //check if the encryption service is enable before using it

                 if(KNSServiceLocator.getEncryptionService().isEnabled()) {

                     converted = KNSServiceLocator.getEncryptionService().encrypt(converted);

                 }

         }

         catch (GeneralSecurityException e) {

             throw new RuntimeException("Unable to encrypt value to db: " + e.getMessage());

         }

         return converted;

     }

     /**

      * @see FieldConversion#sqlToJava(Object)

      */

     public Object sqlToJava(Object source) {

         String converted = "";

         if (source != null) {

             converted = source.toString();

         }

         try {

                 //check if the encryption service is enable before using it

                 if(KNSServiceLocator.getEncryptionService().isEnabled()) {

                     converted = KNSServiceLocator.getEncryptionService().decrypt(converted);

                 }

         }

         catch (GeneralSecurityException e) {

             throw new RuntimeException("Unable to decrypt value from db: " + e.getMessage());

         }

         return converted;

     }

 }