jrfconstants.java

把java对象映射成数据库表中的一条记录

/*
 *
 * The contents of this file are subject to the Mozilla Public License
 * Version 1.1 (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.mozilla.org/MPL/
 *
 * Software distributed under the License is distributed on an "AS IS"
 * basis, WITHOUT WARRANTY OF ANY KIND, either express or implied. See the
 * License for the specific language governing rights and limitations under
 * the License.
 *
 * The Original Code is jRelationalFramework.
 *
 * The Initial Developer of the Original Code is is.com.
 * Portions created by is.com are Copyright (C) 2000 is.com.
 * All Rights Reserved.
 *
 * Contributor(s): Jonathan Carlson ([e-mail])
 * Contributor(s): ____________________________________
 *
 * Alternatively, the contents of this file may be used under the terms of
 * the GNU General Public License (the "GPL") or the GNU Lesser General
 * Public license (the "LGPL"), in which case the provisions of the GPL or
 * LGPL are applicable instead of those above.  If you wish to allow use of
 * your version of this file only under the terms of either the GPL or LGPL
 * and not to allow others to use your version of this file under the MPL,
 * indicate your decision by deleting the provisions above and replace them
 * with the notice and other provisions required by either the GPL or LGPL
 * License.  If you do not delete the provisions above, a recipient may use
 * your version of this file under either the MPL or GPL or LGPL License.
 *
 */
package com.is.jrf;


import java.sql.Timestamp;
import java.sql.Date;


/**
 *  This interface should be implemented whenever a class wants easy access
 *  to the value of these variables.
 */
public interface JRFConstants
  {

  /* ===============  Static Final Variables  =============== */

  /**
   * This is a special timestamp that, when detected, is replaced with the
   * current date/time function in the sql.  This value must be unique
   * enough that no one else would accidentally use it.
   */
  public static final Timestamp CURRENT_TIMESTAMP = new Timestamp(-7);
  public static final Date CURRENT_DATE = new Date(-7);

  // ColumnSpec options
  public static final int   SEQUENCED_PRIMARY_KEY = 1;
  public static final int   NATURAL_PRIMARY_KEY = 2;
  public static final int   OPTIMISTIC_LOCK = 3;
  public static final int   REQUIRED = 4;
  public static final int   UNIQUE = 5;
  public static final int   SUBTYPE_IDENTIFIER = 6;

  // ColumnSpec default options
  public static final Object    DEFAULT_TO_NULL = null;
  public static final String    DEFAULT_TO_EMPTY_STRING = "";
  public static final Integer   DEFAULT_TO_ZERO = new Integer(0);
  public static final Integer   DEFAULT_TO_ONE = new Integer(1);
  public static final Timestamp DEFAULT_TO_NOW = CURRENT_TIMESTAMP;
  public static final Date      DEFAULT_TO_TODAY = CURRENT_DATE;
  public static final Boolean   DEFAULT_TO_TRUE = Boolean.TRUE;
  public static final Boolean   DEFAULT_TO_FALSE = Boolean.FALSE;

  // Use these in arguements to buildNameValuePair()
  public static final String EQUALS = "=";
  public static final String NOT_EQUALS = "<>";


  /**
   *  This option should be used as an argument to the AbstractDomain
   *  constructor when we don't want the postFind() method to be executed.
   */
  public static final int NO_POST_FIND = 6;


  } // JRFConstants