X-Git-Url: http://jsfdemo.indexdata.com/?a=blobdiff_plain;ds=sidebyside;f=rset%2Frsnull.c;h=d46c9aa752aef0d7adbb02bfb9f2933aaa60fe42;hb=aebdede4bcc1dfe05728dac36b51a1cda85cc70e;hp=8c597b76087bcd9c19a719ce86109589ed8612b0;hpb=b7ed8922d365e24874e561b7347c2c2ad682d6d8;p=idzebra-moved-to-github.git

diff --git a/rset/rsnull.c b/rset/rsnull.c
index 8c597b7..d46c9aa 100644
--- a/rset/rsnull.c
+++ b/rset/rsnull.c
@@ -4,7 +4,15 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: rsnull.c,v $
- * Revision 1.1  1995-09-06 10:35:44  adam
+ * Revision 1.3  1995-09-08 14:52:42  adam
+ * Work on relevance feedback.
+ *
+ * Revision 1.2  1995/09/07  13:58:43  adam
+ * New parameter: result-set file descriptor (RSFD) to support multiple
+ * positions within the same result-set.
+ * Boolean operators: and, or, not implemented.
+ *
+ * Revision 1.1  1995/09/06  10:35:44  adam
  * Null set implemented.
  *
  */
@@ -14,13 +22,13 @@
 #include <alexutil.h>
 
 static rset_control *r_create(const struct rset_control *sel, void *parms);
-static int r_open (rset_control *ct, int wflag);
-static void r_close (rset_control *ct);
+static RSFD r_open (rset_control *ct, int wflag);
+static void r_close (RSFD rfd);
 static void r_delete (rset_control *ct);
-static void r_rewind (rset_control *ct);
+static void r_rewind (RSFD rfd);
 static int r_count (rset_control *ct);
-static int r_read (rset_control *ct, void *buf);
-static int r_write (rset_control *ct, const void *buf);
+static int r_read (RSFD rfd, void *buf);
+static int r_write (RSFD rfd, const void *buf);
 
 static const rset_control control = 
 {
@@ -42,33 +50,31 @@ static rset_control *r_create(const struct rset_control *sel, void *parms)
 {
     rset_control *newct;
 
-    logf (LOG_DEBUG, "rsnull_create(%s)", sel->desc);
     newct = xmalloc(sizeof(*newct));
     memcpy(newct, sel, sizeof(*sel));
     return newct;
 }
 
-static int r_open(rset_control *ct, int wflag)
+static RSFD r_open (rset_control *ct, int wflag)
 {
     if (wflag)
     {
 	logf (LOG_FATAL, "NULL set type is read-only");
-	return -1;
+	return NULL;
     }
-    return 0;
+    return "";
 }
 
-static void r_close(rset_control *ct)
+static void r_close (RSFD rfd)
 {
-    /* NOP */
 }
 
-static void r_delete(rset_control *ct)
+static void r_delete (rset_control *ct)
 {
     xfree(ct);
 }
 
-static void r_rewind(rset_control *ct)
+static void r_rewind (RSFD rfd)
 {
     logf (LOG_DEBUG, "rsnull_rewind");
 }
@@ -78,12 +84,12 @@ static int r_count (rset_control *ct)
     return 0;
 }
 
-static int r_read (rset_control *ct, void *buf)
+static int r_read (RSFD rfd, void *buf)
 {
     return 0;
 }
 
-static int r_write (rset_control *ct, const void *buf)
+static int r_write (RSFD rfd, const void *buf)
 {
     logf (LOG_FATAL, "NULL set type is read-only");
     return -1;