public JdbcDAO() {
    try {
      ServiceLocator sl = new ServiceLocator();
      dataSource = (DataSource) sl.getDataSource(JNDINames.DATASOURCE);

public abstract class Model implements Cloneable, Serializable {
  public boolean _modified = false;

  public boolean isCacheble() {
    return cacheble;
  }

dataSource = (DataSource) sl.getDataSource(JNDINames.DATASOURCE);
TestEJBLocal testEJB = (TestEJBLocal) WebAppUtil.getEJBService("testEJB",request);