/**
    * Copyright 2004-2015 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.kpme.core;
  
  import java.util.ArrayList;
  import java.util.List;
  
  import org.apache.commons.lang.StringUtils;
  import org.apache.ojb.broker.accesslayer.conversions.ConversionException;
  import org.apache.ojb.broker.accesslayer.conversions.FieldConversion;
  
  public class ListConverter implements FieldConversion{
  
  	/**
  	 * 
  	 */
  	private static final long serialVersionUID = 1L;
  
  	@Override
  	public Object javaToSql(Object arg0) throws ConversionException {
  		return arg0;
  	}
  
  	// To convert a string that contains selected values in checkbox group control or
  	// multi select control in the database table to the back model property, 
  	// which is a list type of primitives (usually string)
  	@Override
  	public Object sqlToJava(Object arg0) throws ConversionException {
  		
  		String selectedValues = arg0.toString();
  		List<String> aList = new ArrayList<String>();
  		
  		selectedValues = StringUtils.removeStart(selectedValues, "[");
  		selectedValues = StringUtils.removeEnd(selectedValues, "]");
  		String[] values = StringUtils.split(selectedValues, ",");
  		
  		for(String value : values){
  			aList.add(StringUtils.strip(value, " ")); // strip whitespace from the start and end
  		}
  		
  
  		return aList;
  	}
  
  }