package org.kuali.ole.sys.businessobject.format;
   
   import java.text.ParseException;
   import java.text.SimpleDateFormat;
   
   import org.apache.commons.lang.StringUtils;
   import org.kuali.ole.sys.context.SpringContext;
   import org.kuali.rice.core.api.config.property.ConfigurationService;
   import org.kuali.rice.core.web.format.FormatException;
  import org.kuali.rice.core.web.format.Formatter;
  
  /**
   * Formatter which specializes in reading dates from flat files
   */
  public class BatchDateFormatter extends Formatter {
      private static final String DEFAULT_FLAT_FILE_DATE_FORMAT = "default.flatFile.dateFormat";
      private static String defaultDateFormat;
  
      private String dateFormat;
      private boolean formatToTimestamp = false;
  
      /**
       * Sets the date format to use for parsing
       * @param dateFormat
       */
      public void setDateFormat(String dateFormat) {
          this.dateFormat = dateFormat;
      }
  
      /**
       * @return the date format associated with this batch date format - if not specified, then the default
       */
      public String getDateFormat() {
          return StringUtils.isBlank(dateFormat) ? getDefaultDateFormat() : dateFormat;
      }
  
      /**
       * @return the default date format, pulled from the application resource messages
       */
      public String getDefaultDateFormat() {
          if (defaultDateFormat == null) {
              defaultDateFormat = SpringContext.getBean(ConfigurationService.class).getPropertyValueAsString(BatchDateFormatter.DEFAULT_FLAT_FILE_DATE_FORMAT);
          }
          return defaultDateFormat;
      }
  
      /**
       * Determines if the date should be parsed to a java.sql.Timestamp rather than the default java.sql.Date
       * @param formatToTimestamp true if result should be parsed as timestamp, false otherwise
       */
      public void setFormatToTimestamp(boolean formatToTimestamp) {
          this.formatToTimestamp = formatToTimestamp;
      }
  
      /**
       * Parses the given String to a date
       */
      @Override
      protected Object convertToObject(String string) {
          try {
              long time = new SimpleDateFormat(getDateFormat()).parse(string).getTime();
              if (formatToTimestamp) {
                  return new java.sql.Timestamp(time);
              }
              return new java.sql.Date(time);
          }
          catch (ParseException e) {
              throw new FormatException("Date must be of the format " + dateFormat, e);
          }
      }
  }