/*
- * Copyright (C) 1994-1995, Index Data I/S
+ * Copyright (C) 1994-1998, Index Data I/S
* All rights reserved.
* Sebastian Hammer, Adam Dickmeiss
*
* $Log: rset.h,v $
- * Revision 1.11 1995-12-11 09:07:53 adam
+ * Revision 1.15 1998-03-05 08:37:44 adam
+ * New result set model.
+ *
+ * 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).
#include <stdlib.h>
+#ifdef __cplusplus
+extern "C" {
+#endif
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_read)(RSFD rfd, void *buf);
+ 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;
+};
+
+struct rset_term {
+ char *name;
+ int nn;
+ char *flags;
+};
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);
+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)))
+#define rset_open(rs, wflag) (*(rs)->control->f_open)((rs), (wflag))
/* void rset_close(RSET rs); */
-#define rset_close(rs, rfd) ((*(rs)->control->f_close)((rfd)))
+#define rset_close(rs, rfd) (*(rs)->control->f_close)(rfd)
void rset_delete(RSET rs);
+RSET rset_dup (RSET rs);
+
/* void rset_rewind(RSET rs); */
-#define rset_rewind(rs, rfd) ((*(rs)->control->f_rewind)((rfd)))
+#define rset_rewind(rs, rfd) (*(rs)->control->f_rewind)((rfd))
/* int rset_count(RSET rs); */
-#define rset_count(rs) ((*(rs)->control->f_count)(rs))
+#define rset_count(rs) (*(rs)->control->f_count)(rs)
/* int rset_read(RSET rs, void *buf); */
-#define rset_read(rs, fd, buf) ((*(rs)->control->f_read)((fd), (buf)))
+#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)))
+#define rset_write(rs, fd, buf) (*(rs)->control->f_write)((fd), (buf))
/* 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
+}
+#endif
+
#endif