segment.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.IMSDatabase;

import com.prudsys.pdm.Cwm.IMSDatabase.IMSTypes.ChildPointerType;
import com.prudsys.pdm.Cwm.IMSDatabase.IMSTypes.RulesType;
import com.prudsys.pdm.Cwm.Record.RecordDef;

/**
 * An instance of this object class represents a segment within a DBD user object.
 * A segment is the IMS-view of a data structure that maps the fields in the
 * segment.
 */
public class Segment extends RecordDef
{

   /**
    * This attribute is a flag to indicate whether a segment will use the data
    * capture exits specified on the DBD. A valid of FALSE maps to use of EXIT=NONE
    * parameter on the SEGM macro. This flag has no meaning when exits points to any
    * instances of PropagatedBy.
    */
   public Boolean exitFlag;

   /**
    * This attribute holds estimated number of times that this segment will occur for
    * each occurrence of its physical parent.
    */
   public String frequency;

   /**
    * This attribute holds the length of a fixed-length segment, or the maximum
    * length of a variable length segment.
    */
   public Integer maximumLength;

   /**
    * This attribute holds the minimum length of a variable length segment.
    */
   public Integer minimumLength;

   /**
    * This attributes holds the value that indicates where to place new occurrences
    * of this segment type in the physical database.
    */
   public RulesType rules;

   /**
    * This attribute holds the number of subset pointers in a direct dependent
    * segment in a DEDB DBD. Valid values are 0-8.
    */
   public String subsetPointers;

   /**
    * This attribute indicates whether the segment is direct dependent or sequential.
    * A value of TRUE specifies use of DIR as the segment type on the generated DBD.
    * A value of FALSE specifies use of SEQ on the generated DBD. This attribute is
    * ignored for the root segment of the DBD user object.
    */
   public Boolean directDependent;

   /**
    * This attribute describes the type of physical child pointer to be stored in the
    * prefix area of the segment in the DBD. Valid Values are SNGL, DBLE, null
    */
   public ChildPointerType pcPointer;
   public Exit exit;
   public Segment child;
   public Segment parent;
   public SegmentLogical logical;
   public DBD dbd;
   public SenSegment senseg[];

   public Segment()
   {

   }
}