domain.java

一个数据挖掘软件ALPHAMINERR的整个过程的JAVA版源代码

/*
 *    This program 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.
 *
 *    This program 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.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program; if not, write to the Free Software
 *    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

/**
 * Title: XELOPES Data Mining Library
 * Description: The XELOPES library is an open platform-independent and data-source-independent library for Embedded Data Mining.
 * Copyright: Copyright (c) 2002 Prudential Systems Software GmbH
 * Company: ZSoft (www.zsoft.ru), Prudsys (www.prudsys.com)
 * @author Valentine Stepanenko ([e-mail])
 * @version 1.0
 */

package com.prudsys.pdm.Cwm.ER;

import com.prudsys.pdm.Cwm.Core.Classifier;
import com.prudsys.pdm.Cwm.Expressions.ExpressionNode;

/**
 * Domain instances represent restrictions on data types declared elsewhere and
 * can be used as the type of Attribute instances. Domains restrict, in a manner
 * described by their validationRule attribute, the values of the type identified
 * via the baseType reference that can be stored in the Attribute. Because the
 * baseType reference is optional, Domains are not required to have a base type;
 * in such cases, the type of the Domain is the type of the default expression.
 *
 *
 *
 * The following figures illustrate ways that Domains can be used to subset a
 * emerated and numeric data types.
 */
public class Domain extends Classifier
{

   /**
    * An expression indicating the default value of Attributes for which this Domain
    * serves as the type.
    */
   public ExpressionNode default1;

   /**
    * Contains an expression that describes the valid values for this attribute. If
    * the baseType reference is not empty, the expression restricts the values of the
    * base type indicated by it.
    */
   public ExpressionNode validationRule;
   public Classifier baseType;

   public Domain()
   {

   }
}