@Order(20.0)
			public class CustomerField extends AbstractSmartField<Long> {

				@Override
				protected String getConfiguredLabel() {
					return TEXTS.get("Customer");
				}

				@Override
				protected Class<? extends ILookupCall<Long>> getConfiguredLookupCall() {
					return CustomerLookupCall.class;
				}

				@Override
				protected boolean getConfiguredMandatory() {
					return true;
				}

				@Override
				protected void execChangedValue() throws ProcessingException {
					getLicenseTextField().setValue(null);
				}
			}

public class CustomerLookupCall extends LookupCall<Long> {

  private static final long serialVersionUID = 1L;

  @Override
  protected Class<? extends ILookupService<Long>> getConfiguredService() {
    return ICustomerLookupService.class;
  }
}

@TunnelToServer
public interface ICustomerLookupService extends ILookupService<Long> {
}

@Server
public class CustomerLookupService extends AbstractSqlLookupService<Long> implements ICustomerLookupService {

  @Override
  protected String getConfiguredSqlSelect() {
    return "select id, name from customer";
  }
}

	Object[][] data = new Object[][]{
		new Object[]{1L, "Helsinky"},
		new Object[]{2L},
		new Object[]{3L},
		new Object[]{4L, "Zagreb"}
	};

  @Override
  protected String getConfiguredSqlSelect() {
    return ""
    		+ "SELECT id, "
    		+ "       name "
    		+ "  FROM customer "
    		+ " WHERE 1 = 1 "
    		+ "<key>AND id = :key</key> "
    		+ "<text>AND UPPER(name) LIKE UPPER(:text || '%')</text> "
    		+ "<all></all>";
  }

  public static <KEY_TYPE> List<ILookupRow<KEY_TYPE>> createLookupRowArray(Object[][] data, ILookupCall<KEY_TYPE> call, Class<?> keyClass) {
    return createLookupRowArray(data, data != null && data.length > 0 ? data[0].length : 0, call, keyClass);
  }

  public static <KEY_TYPE> List<ILookupRow<KEY_TYPE>> createLookupRowArray(Object[][] data, ILookupCall<KEY_TYPE> call, Class<?> keyClass) {
    int maxColumnIndex = data != null && data.length > 0 ? data[0].length - 1 : 0;
    return createLookupRowArray(data, maxColumnIndex, call, keyClass);
  }