ChangeDateVariableSetter.java

package com.spun.util.database.automaticsetter;

import java.sql.SQLException;
import java.sql.Statement;
import java.sql.Timestamp;

import com.spun.util.database.AutomaticVariableSetter;
import com.spun.util.database.DatabaseObject;

public class ChangeDateVariableSetter
  implements AutomaticVariableSetter
{
  public static final ChangeDateVariableSetter INSTANCE = new ChangeDateVariableSetter();
  private ChangeDateVariableSetter () {}
  /***********************************************************************/
  public void setFor(DatabaseObject forObject, int atStage, Statement stmt) throws SQLException
  {
    if (atStage == AutomaticVariableSetter.UPDATE)
    {
      ((ChangeDateAware)forObject).setChangeDate(new Timestamp(System.currentTimeMillis()));
    }
    else if (atStage == AutomaticVariableSetter.INSERT)
    {
      if (forObject instanceof AddDateAware && ((AddDateAware)forObject).getAddDate() != null)
      {
        ((ChangeDateAware)forObject).setChangeDate(((AddDateAware)forObject).getAddDate());
      }
      else
      {
      ((ChangeDateAware)forObject).setChangeDate(new Timestamp(System.currentTimeMillis()));
      }
    }
  }
  /***********************************************************************/
  /***********************************************************************/
}