constraint.java

来自「RESIN 3.2 最新源码」· Java 代码 · 共 68 行

/*
 * Copyright (c) 1998-2008 Caucho Technology -- all rights reserved
 *
 * This file is part of Resin(R) Open Source
 *
 * Each copy or derived work must preserve the copyright notice and this
 * notice unmodified.
 *
 * Resin Open Source is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * Resin Open Source is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE, or any warranty
 * of NON-INFRINGEMENT.  See the GNU General Public License for more
 * details.
 *
 * You should have received a copy of the GNU General Public License
 * along with Resin Open Source; if not, write to the
 *   Free SoftwareFoundation, Inc.
 *   59 Temple Place, Suite 330
 *   Boston, MA 02111-1307  USA
 *
 * @author Scott Ferguson
 */

package com.caucho.db.table;

import com.caucho.db.sql.QueryContext;
import com.caucho.db.store.Transaction;

import java.sql.SQLException;

/**
 * Validity constraints.
 */
abstract public class Constraint {
  private String _name;

  /**
   * Sets an identifier for the constraint.
   */
  public void setName(String name)
  {
    _name = name;
  }

  /**
   * Gets an identifier for the constraint.
   */
  public String getName()
  {
    return _name;
  }

  /**
   * Tries to validate the constraint.
   */
  public void validate(TableIterator []rows,
		       QueryContext contstraint, Transaction xa)
    throws SQLException
  {
    throw new UnsupportedOperationException(getClass().getName());
  }
}