From 6c836c5e8eff1e57360dd0a33197c91301277c2c Mon Sep 17 00:00:00 2001
From: Adam Dickmeiss <adam@indexdata.dk>
Date: Mon, 11 Dec 1995 09:07:53 +0000
Subject: [PATCH] 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.

---
 include/rsbool.h |   13 ++++++++++++-
 include/rset.h   |   21 +++++++++++++++++++--
 2 files changed, 31 insertions(+), 3 deletions(-)

diff --git a/include/rsbool.h b/include/rsbool.h
index 5eb017c..e3285d2 100644
--- a/include/rsbool.h
+++ b/include/rsbool.h
@@ -4,7 +4,14 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: rsbool.h,v $
- * Revision 1.3  1995-09-07 13:58:08  adam
+ * Revision 1.4  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 1.3  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.
@@ -26,6 +33,10 @@ extern const rset_control *rset_kind_and;
 extern const rset_control *rset_kind_or;
 extern const rset_control *rset_kind_not;
 
+extern const rset_control *rset_kind_sand;
+extern const rset_control *rset_kind_sor;
+extern const rset_control *rset_kind_snot;
+
 typedef struct rset_bool_parms
 {
     int     key_size;
diff --git a/include/rset.h b/include/rset.h
index e4a8bee..e6bef93 100644
--- a/include/rset.h
+++ b/include/rset.h
@@ -4,7 +4,14 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: rset.h,v $
- * Revision 1.10  1995-10-12 12:40:36  adam
+ * 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.
  *
@@ -53,7 +60,8 @@ typedef struct rset *RSET;
 typedef struct rset_control
 {
     char *desc; /* text description of set type (for debugging) */
-    void *(*f_create)(const struct rset_control *sel, void *parms);
+    void *(*f_create)(const struct rset_control *sel, void *parms,
+                      int *flags);
     RSFD (*f_open)(RSET ct, int wflag);
     void (*f_close)(RSFD rfd);
     void (*f_delete)(RSET ct);
@@ -67,6 +75,7 @@ typedef struct rset_control
 typedef struct rset
 {
     const rset_control *control;
+    int  flags;
     void *buf;
 } rset;
 
@@ -101,4 +110,12 @@ void rset_delete(RSET rs);
 /* 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)
 #endif
-- 
1.7.10.4