Bug fixes. Handler may abort further scanning.

[idzebra-moved-to-github.git] / index / zserver.c

diff --git a/index/zserver.c b/index/zserver.c
index c36ccaf..797a884 100644 (file)
--- a/index/zserver.c
+++ b/index/zserver.c
@@ -4,7 +4,26 @@
  * Sebastian Hammer, Adam Dickmeiss
  *
  * $Log: zserver.c,v $
- * Revision 1.6  1995-09-08 08:53:22  adam
+ * Revision 1.12  1995-10-06 13:52:06  adam
+ * Bug fixes. Handler may abort further scanning.
+ *
+ * Revision 1.11  1995/10/06  10:43:57  adam
+ * Scan added. 'occurrences' in scan entries not set yet.
+ *
+ * Revision 1.10  1995/10/02  16:43:32  quinn
+ * Set default resulting record type in fetch.
+ *
+ * Revision 1.9  1995/10/02  15:18:52  adam
+ * New member in recRetrieveCtrl: diagnostic.
+ *
+ * Revision 1.8  1995/09/28  09:19:47  adam
+ * xfree/xmalloc used everywhere.
+ * Extract/retrieve method seems to work for text records.
+ *
+ * Revision 1.7  1995/09/27  16:17:32  adam
+ * More work on retrieve.
+ *
+ * Revision 1.6  1995/09/08  08:53:22  adam
  * Record buffer maintained in server_info.
  *
  * Revision 1.5  1995/09/06  16:11:18  adam
@@ -30,10 +49,9 @@
 #include <unistd.h>
 #include <fcntl.h>
 
-#include "zserver.h"
-
-#include <backend.h>
+#include <recctrl.h>
 #include <dmalloc.h>
+#include "zserver.h"
 
 ZServerInfo server_info;
 
@@ -75,7 +93,7 @@ bend_initresult *bend_init (bend_initrequest *q)
         r.errstring = "is_open fail: wordisam";
         return &r;
     }
-    server_info.recordBuf = NULL;
+    server_info.odr = odr_createmem (ODR_ENCODE);
     return &r;
 }
 
@@ -87,6 +105,8 @@ bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
     r.errstring = 0;
     r.hits = 0;
 
+    odr_reset (server_info.odr);
+    server_info.errCode = 0;
     switch (q->query->which)
     {
     case Z_Query_type_1:
@@ -100,38 +120,85 @@ bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
     return &r;
 }
 
+static int record_read (int fd, char *buf, size_t count)
+{
+    return read (fd, buf, count);
+}
+
+static int record_fetch (ZServerInfo *zi, int sysno, ODR stream,
+                          oid_value input_format, oid_value *output_format,
+                          char **rec_bufp, int *rec_lenp)
+{
+    char record_info[SYS_IDX_ENTRY_LEN];
+    char *fname, *file_type;
+    RecType rt;
+    struct recRetrieveCtrl retrieveCtrl;
+
+    if (lseek (zi->sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN,
+               SEEK_SET) == -1)
+    {
+        logf (LOG_FATAL|LOG_ERRNO, "Retrieve: lseek of sys_idx");
+        exit (1);
+    }
+    if (read (zi->sys_idx_fd, record_info, SYS_IDX_ENTRY_LEN) == -1)
+    {
+        logf (LOG_FATAL|LOG_ERRNO, "Retrieve: read of sys_idx");
+        exit (1);
+    }
+    file_type = record_info;
+    fname = record_info + strlen(record_info) + 1;
+    if (!(rt = recType_byName (file_type)))
+    {
+        logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s", 
+              file_type);
+        exit (1);
+    }
+    if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
+    {
+        logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Open record file %s", fname);
+        exit (1);
+    }
+    retrieveCtrl.odr = stream;
+    retrieveCtrl.readf = record_read;
+    retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
+    retrieveCtrl.diagnostic = 0;
+    (*rt->retrieve)(&retrieveCtrl);
+    *output_format = retrieveCtrl.output_format;
+    *rec_bufp = retrieveCtrl.rec_buf;
+    *rec_lenp = retrieveCtrl.rec_len;
+    close (retrieveCtrl.fd);
+    return retrieveCtrl.diagnostic;
+}
+
 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
 {
     static bend_fetchresult r;
     int positions[2];
-    ZServerRecord *records;
+    ZServerSetSysno *records;
 
     r.errstring = 0;
     r.last_in_set = 0;
     r.basename = "base";
 
-    xfree (server_info.recordBuf);
-    server_info.recordBuf = NULL;
+    odr_reset (server_info.odr);
+    server_info.errCode = 0;
+
     positions[0] = q->number;
-    records = resultSetRecordGet (&server_info, q->setname, 1, positions);
+    records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
     if (!records)
     {
         logf (LOG_DEBUG, "resultSetRecordGet, error");
         r.errcode = 13;
         return &r;
     }
-    if (!records[0].buf)
+    if (!records[0].sysno)
     {
         r.errcode = 13;
         logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
         return &r;
     }
-    r.len = records[0].size;
-    server_info.recordBuf = r.record = xmalloc (r.len+1);
-    strcpy (r.record, records[0].buf);
-    resultSetRecordDel (&server_info, records, 1);
-    r.format = VAL_SUTRS;
-    r.errcode = 0;
+    r.errcode = record_fetch (&server_info, records[0].sysno, q->stream,
+                              q->format, &r.format, &r.record, &r.len);
     return &r;
 }
 
@@ -142,22 +209,17 @@ bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
 
 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
 {
-    static struct scan_entry list[200];
-    static char buf[200][200];
     static bend_scanresult r;
-    int i;
 
+    odr_reset (server_info.odr);
+    server_info.errCode = 0;
+
+    r.errstring = 0;
     r.term_position = q->term_position;
     r.num_entries = q->num_entries;
-    r.entries = list;
-    for (i = 0; i < r.num_entries; i++)
-    {
-       list[i].term = buf[i];
-       sprintf(list[i].term, "term-%d", i+1);
-       list[i].occurrences = rand() % 100000;
-    }
-    r.errcode = 0;
-    r.errstring = 0;
+    r.errcode = rpn_scan (&server_info, server_info.odr, q->term,
+                          &r.term_position,
+                          &r.num_entries, &r.entries);
     return &r;
 }
 
@@ -167,8 +229,6 @@ void bend_close (void *handle)
     dict_close (server_info.wordDict);
     is_close (server_info.wordIsam);
     close (server_info.sys_idx_fd);
-    xfree (server_info.recordBuf);
-    server_info.recordBuf = NULL;
     return;
 }