/*
    * Copyright 2005-2008 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.core.util;
  
  import org.apache.ojb.broker.accesslayer.conversions.FieldConversion;
  
  public abstract class OjbCharBooleanFieldConversionBase implements FieldConversion {
  
      protected abstract String getTrueValue();
  
      protected abstract String getFalseValue();
  
  
      /**
       * @see FieldConversion#javaToSql(Object)
       */
      public Object javaToSql(Object source) {
          Object result = source;
          if (source instanceof Boolean) {
              if (source != null) {
                  Boolean b = (Boolean) source;
                  result = b.booleanValue() ? getTrueValue() : getFalseValue();
              }
          }
          return result;
      }
  
      /**
       * @see FieldConversion#sqlToJava(Object)
       */
      public Object sqlToJava(Object source) {
          Object result = source;
          if (source instanceof String) {
              if (source != null) {
                  String s = (String) source;
                  result = getTrueValue().equals(s) ? Boolean.TRUE : getFalseValue().equals(s) ? Boolean.FALSE : null;
                  if (result == null) {
                      throw new RuntimeException("Expected '" + getTrueValue() + "' or '" + getFalseValue() + "' but saw '" + source + "'");
                  }
              }
          }
          return result;
      }
  
  }