2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.8 1995-10-06 14:37:53 adam
8 * New result set method: r_score.
9 * Local no (sysno) and score is transferred to retrieveCtrl.
11 * Revision 1.7 1995/09/07 13:58:08 adam
12 * New parameter: result-set file descriptor (RSFD) to support multiple
13 * positions within the same result-set.
14 * Boolean operators: and, or, not implemented.
16 * Revision 1.6 1995/09/06 16:10:58 adam
17 * More work on boolean sets.
19 * Revision 1.5 1995/09/04 15:20:13 adam
20 * More work on temp sets. is_open member removed.
22 * Revision 1.4 1995/09/04 09:09:52 adam
23 * String arg in dict lookup is const.
26 * Revision 1.3 1994/11/22 13:15:27 quinn
29 * Revision 1.2 1994/11/04 13:21:21 quinn
32 * Revision 1.1 1994/11/03 14:13:22 quinn
33 * Result set manipulation
44 typedef struct rset_control
46 char *desc; /* text description of set type (for debugging) */
47 void *buf; /* state data stored by subsystem */
48 struct rset_control *(*f_create)(const struct rset_control *sel, void *parms);
49 RSFD (*f_open)(struct rset_control *ct, int wflag);
50 void (*f_close)(RSFD rfd);
51 void (*f_delete)(struct rset_control *ct);
52 void (*f_rewind)(RSFD rfd);
53 int (*f_count)(struct rset_control *ct);
54 int (*f_read)(RSFD rfd, void *buf);
55 int (*f_write)(RSFD rfd, const void *buf);
56 int (*f_score)(RSFD rfd, int *score);
61 rset_control *control;
64 RSET rset_create(const rset_control *sel, void *parms); /* parameters? */
66 /* int rset_open(RSET rs, int wflag); */
67 #define rset_open(rs, wflag) ((*(rs)->control->f_open)((rs)->control, (wflag)))
69 /* void rset_close(RSET rs); */
70 #define rset_close(rs, rfd) ((*(rs)->control->f_close)((rfd)))
72 void rset_delete(RSET rs);
74 /* void rset_rewind(RSET rs); */
75 #define rset_rewind(rs, rfd) ((*(rs)->control->f_rewind)((rfd)))
77 /* int rset_count(RSET rs); */
78 #define rset_count(rs) ((*(rs)->control->f_count)((rs)->control))
80 /* int rset_read(RSET rs, void *buf); */
81 #define rset_read(rs, fd, buf) ((*(rs)->control->f_read)((fd), (buf)))
83 /* int rset_write(RSET rs, const void *buf); */
84 #define rset_write(rs, fd, buf) ((*(rs)->control->f_write)((fd), (buf)))
86 /* int rset_score(RSET rs, int *buf); */
87 #define rset_score(rs, fd, score) ((*(rs)->control->f_score)((fd), (score)))