-/*
- * Copyright (C) 1994-1998, Index Data I/S
- * All rights reserved.
- * Sebastian Hammer, Adam Dickmeiss
- *
- * $Log: rset.h,v $
- * Revision 1.14 1998-02-10 11:56:46 adam
- * Implemented rset_dup.
- *
- * Revision 1.13 1997/12/18 10:54:24 adam
- * New method result set method rs_hits that returns the number of
- * hits in result-set (if known). The ranked result set returns real
- * number of hits but only when not combined with other operands.
- *
- * Revision 1.12 1997/09/05 15:30:03 adam
- * Changed prototype for chr_map_input - added const.
- * Added support for C++, headers uses extern "C" for public definitions.
- *
- * Revision 1.11 1995/12/11 09:07:53 adam
- * New rset member 'flag', that holds various flags about a result set -
- * currently 'volatile' (set is register dependent) and 'ranked' (set is
- * ranked).
- * New set types sand/sor/snot. They handle and/or/not for ranked and
- * semi-ranked result sets.
- *
- * Revision 1.10 1995/10/12 12:40:36 adam
- * Private info (buf) moved from struct rset_control to struct rset.
- * Member control in rset is statically set in rset_create.
- *
- * Revision 1.9 1995/10/10 14:00:01 adam
- * Function rset_open changed its wflag parameter to general flags.
- *
- * Revision 1.8 1995/10/06 14:37:53 adam
- * New result set method: r_score.
- * Local no (sysno) and score is transferred to retrieveCtrl.
- *
- * Revision 1.7 1995/09/07 13:58:08 adam
- * New parameter: result-set file descriptor (RSFD) to support multiple
- * positions within the same result-set.
- * Boolean operators: and, or, not implemented.
- *
- * Revision 1.6 1995/09/06 16:10:58 adam
- * More work on boolean sets.
- *
- * Revision 1.5 1995/09/04 15:20:13 adam
- * More work on temp sets. is_open member removed.
- *
- * Revision 1.4 1995/09/04 09:09:52 adam
- * String arg in dict lookup is const.
- * Minor changes.
- *
- * Revision 1.3 1994/11/22 13:15:27 quinn
- * Simple
- *
- * Revision 1.2 1994/11/04 13:21:21 quinn
- * Working.
- *
- * Revision 1.1 1994/11/03 14:13:22 quinn
- * Result set manipulation
- *
- */
+/* $Id: rset.h,v 1.27 2004-08-06 12:28:22 adam Exp $
+ Copyright (C) 1995,1996,1997,1998,1999,2000,2001,2002
+ Index Data Aps
+
+This file is part of the Zebra server.
+
+Zebra 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, or (at your option) any later
+version.
+
+Zebra 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 Zebra; see the file LICENSE.zebra. If not, write to the
+Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA
+02111-1307, USA.
+*/
+
+
#ifndef RSET_H
#define RSET_H
typedef void *RSFD;
typedef struct rset *RSET;
+typedef struct rset_term *RSET_TERM;
-typedef struct rset_control
+struct rset_control
{
char *desc; /* text description of set type (for debugging) */
- void *(*f_create)(const struct rset_control *sel, void *parms,
- int *flags);
+ void *(*f_create)(RSET ct, const struct rset_control *sel, void *parms);
RSFD (*f_open)(RSET ct, int wflag);
void (*f_close)(RSFD rfd);
void (*f_delete)(RSET ct);
void (*f_rewind)(RSFD rfd);
- int (*f_count)(RSET ct);
- int (*f_hits)(RSET ct, void *oi);
- int (*f_read)(RSFD rfd, void *buf);
+ int (*f_forward)(RSET ct, RSFD rfd, void *buf, int *term_index,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf);
+ void (*f_pos)(RSFD rfd, double *current, double *total);
+ /* returns -1,-1 if pos function not implemented for this type */
+ int (*f_read)(RSFD rfd, void *buf, int *term_index);
int (*f_write)(RSFD rfd, const void *buf);
- int (*f_score)(RSFD rfd, int *score);
-} rset_control;
+};
+
+int rset_default_forward(RSET ct, RSFD rfd, void *buf, int *term_index,
+ int (*cmpfunc)(const void *p1, const void *p2),
+ const void *untilbuf);
+void rset_default_pos(RSFD rfd, double *current, double *total);
+
+struct rset_term {
+ char *name;
+ zint nn;
+ char *flags;
+ int count;
+ int type;
+};
typedef struct rset
{
- const rset_control *control;
+ const struct rset_control *control;
int flags;
int count;
void *buf;
+ RSET_TERM *rset_terms;
+ int no_rset_terms;
} rset;
+RSET_TERM rset_term_create (const char *name, int length, const char *flags,
+ int type);
+void rset_term_destroy (RSET_TERM t);
+RSET_TERM rset_term_dup (RSET_TERM t);
+
#define RSETF_READ 0
#define RSETF_WRITE 1
-#define RSETF_SORT_SYSNO 0
-#define RSETF_SORT_RANK 2
-
-RSET rset_create(const rset_control *sel, void *parms); /* parameters? */
+RSET rset_create(const struct rset_control *sel, void *parms);
+/* parameters? */
/* int rset_open(RSET rs, int wflag); */
#define rset_open(rs, wflag) (*(rs)->control->f_open)((rs), (wflag))
/* void rset_rewind(RSET rs); */
#define rset_rewind(rs, rfd) (*(rs)->control->f_rewind)((rfd))
-/* int rset_count(RSET rs); */
-#define rset_count(rs) (*(rs)->control->f_count)(rs)
+/* int rset_forward(RSET rs, void *buf, int *indx, void *untilbuf); */
+#define rset_forward(rs, fd, buf, indx, cmpfunc, untilbuf) \
+ (*(rs)->control->f_forward)((rs), (fd), (buf), (indx), (cmpfunc), (untilbuf))
-/* int rset_hits (RSET) */
-#define rset_hits(rs) (*(rs)->control->f_hits)((rs), 0)
+/* int rset_pos(RSET rs, RSFD fd, double *current, double *total); */
+#define rset_pos(rs,fd,cur,tot) \
+ (*(rs)->control->f_pos)( (fd),(cur),(tot))
-/* int rset_read(RSET rs, void *buf); */
-#define rset_read(rs, fd, buf) (*(rs)->control->f_read)((fd), (buf))
+/* int rset_read(RSET rs, void *buf, int *indx); */
+#define rset_read(rs, fd, buf, indx) (*(rs)->control->f_read)((fd), (buf), indx)
/* int rset_write(RSET rs, const void *buf); */
#define rset_write(rs, fd, buf) (*(rs)->control->f_write)((fd), (buf))
-/* int rset_score(RSET rs, int *buf); */
-#define rset_score(rs, fd, score) (*(rs)->control->f_score)((fd), (score))
-
-
/* int rset_type (RSET) */
#define rset_type(rs) ((rs)->control->desc)
#define RSET_FLAG_VOLATILE 1
-#define RSET_FLAG_RANKED 2
#define rset_is_volatile(rs) ((rs)->flags & RSET_FLAG_VOLATILE)
-#define rset_is_ranked(rs) ((rs)->flags & RSET_FLAG_RANKED)
#ifdef __cplusplus
}
projects / idzebra-moved-to-github.git / blobdiff