+ZServerInfo server_info;
+
+bend_initresult *bend_init (bend_initrequest *q)
+{
+ static bend_initresult r;
+ static char *name = "zserver";
+
+ r.errcode = 0;
+ r.errstring = 0;
+ r.handle = name;
+
+ logf (LOG_DEBUG, "bend_init");
+ server_info.sets = NULL;
+ if (!(server_info.sys_idx_fd = open (FNAME_SYS_IDX, O_RDONLY)))
+ {
+ logf (LOG_WARN|LOG_ERRNO, "sys_idx open fail");
+ r.errcode = 1;
+ r.errstring = "sys_idx open fail";
+ return &r;
+ }
+ if (!(server_info.fileDict = dict_open (FNAME_FILE_DICT, 10, 0)))
+ {
+ logf (LOG_WARN, "dict_open fail: fname dict");
+ r.errcode = 1;
+ r.errstring = "dict_open fail: fname dict";
+ return &r;
+ }
+ if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
+ {
+ logf (LOG_WARN, "dict_open fail: word dict");
+ dict_close (server_info.fileDict);
+ r.errcode = 1;
+ r.errstring = "dict_open fail: word dict";
+ return &r;
+ }
+ if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
+ sizeof (struct it_key))))
+ {
+ logf (LOG_WARN, "is_open fail: word isam");
+ dict_close (server_info.wordDict);
+ dict_close (server_info.fileDict);
+ r.errcode = 1;
+ r.errstring = "is_open fail: word isam";
+ return &r;
+ }
+ server_info.odr = odr_createmem (ODR_ENCODE);
+ return &r;
+}
+
+bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
+{
+ static bend_searchresult r;
+
+ r.errcode = 0;
+ r.errstring = 0;
+ r.hits = 0;
+
+ odr_reset (server_info.odr);
+ server_info.errCode = 0;
+ switch (q->query->which)
+ {
+ case Z_Query_type_1:
+ r.errcode = rpn_search (&server_info, q->query->u.type_1,
+ q->num_bases, q->basenames, q->setname,
+ &r.hits);
+ break;
+ default:
+ r.errcode = 107;
+ }
+ 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, int score, ODR stream,
+ oid_value input_format, Z_RecordComposition *comp,
+ 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);
+ }
+ logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
+ if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
+ {
+ char *msg = "Record doesn't exist";
+ logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
+ *output_format = VAL_SUTRS;
+ *rec_bufp = msg;
+ *rec_lenp = strlen (msg);
+ return 0; /* or 14: System error in presenting records */
+ }
+ retrieveCtrl.localno = sysno;
+ retrieveCtrl.score = score;
+ retrieveCtrl.odr = stream;
+ retrieveCtrl.readf = record_read;
+ retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
+ retrieveCtrl.comp = comp;
+ 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];
+ ZServerSetSysno *records;
+
+ r.errstring = 0;
+ r.last_in_set = 0;
+ r.basename = "base";
+
+ odr_reset (server_info.odr);
+ server_info.errCode = 0;
+
+ positions[0] = q->number;
+ records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
+ if (!records)
+ {
+ logf (LOG_DEBUG, "resultSetRecordGet, error");
+ r.errcode = 13;
+ return &r;
+ }
+ if (!records[0].sysno)
+ {
+ r.errcode = 13;
+ logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
+ return &r;
+ }
+ r.errcode = record_fetch (&server_info, records[0].sysno,
+ records[0].score, q->stream, q->format,
+ q->comp, &r.format, &r.record, &r.len);
+ resultSetSysnoDel (&server_info, records, 1);
+ return &r;
+}
+
+bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
+{
+ return 0;
+}
+
+bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
+{
+ static bend_scanresult r;
+ int status;
+
+ 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.errcode = rpn_scan (&server_info, server_info.odr, q->term,
+ q->num_bases, q->basenames,
+ &r.term_position,
+ &r.num_entries, &r.entries, &status);
+ r.status = status;
+ return &r;
+}
+
+void bend_close (void *handle)
+{
+ dict_close (server_info.fileDict);
+ dict_close (server_info.wordDict);
+ is_close (server_info.wordIsam);
+ close (server_info.sys_idx_fd);
+ return;
+}