geqo_gene.h

来自「PostgreSQL 8.2中增加了很多企业用户所需要的功能和性能上的提高,其开」· C头文件 代码 · 共 46 行

/*-------------------------------------------------------------------------
 *
 * geqo_gene.h
 *	  genome representation in optimizer/geqo
 *
 * Portions Copyright (c) 1996-2006, PostgreSQL Global Development Group
 * Portions Copyright (c) 1994, Regents of the University of California
 *
 * $PostgreSQL: pgsql/src/include/optimizer/geqo_gene.h,v 1.19 2006/03/05 15:58:57 momjian Exp $
 *
 *-------------------------------------------------------------------------
 */

/* contributed by:
   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
   *  Martin Utesch				 * Institute of Automatic Control	   *
   =							 = University of Mining and Technology =
   *  [e-mail]  * Freiberg, Germany				   *
   =*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=*=
 */


#ifndef GEQO_GENE_H
#define GEQO_GENE_H

#include "nodes/nodes.h"

/* we presume that int instead of Relid
   is o.k. for Gene; so don't change it! */
typedef int Gene;

typedef struct Chromosome
{
	Gene	   *string;
	Cost		worth;
} Chromosome;

typedef struct Pool
{
	Chromosome *data;
	int			size;
	int			string_length;
} Pool;

#endif   /* GEQO_GENE_H */