2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.17 1995-10-16 09:32:40 adam
8 * More work on relational op.
10 * Revision 1.16 1995/10/13 12:26:44 adam
11 * Optimization of truncation.
13 * Revision 1.15 1995/10/12 12:40:55 adam
14 * Bug fixes in rpn_prox.
16 * Revision 1.14 1995/10/09 16:18:37 adam
17 * Function dict_lookup_grep got extra client data parameter.
19 * Revision 1.13 1995/10/06 14:38:00 adam
20 * New result set method: r_score.
21 * Local no (sysno) and score is transferred to retrieveCtrl.
23 * Revision 1.12 1995/10/06 13:52:06 adam
24 * Bug fixes. Handler may abort further scanning.
26 * Revision 1.11 1995/10/06 10:43:57 adam
27 * Scan added. 'occurrences' in scan entries not set yet.
29 * Revision 1.10 1995/10/02 16:43:32 quinn
30 * Set default resulting record type in fetch.
32 * Revision 1.9 1995/10/02 15:18:52 adam
33 * New member in recRetrieveCtrl: diagnostic.
35 * Revision 1.8 1995/09/28 09:19:47 adam
36 * xfree/xmalloc used everywhere.
37 * Extract/retrieve method seems to work for text records.
39 * Revision 1.7 1995/09/27 16:17:32 adam
40 * More work on retrieve.
42 * Revision 1.6 1995/09/08 08:53:22 adam
43 * Record buffer maintained in server_info.
45 * Revision 1.5 1995/09/06 16:11:18 adam
46 * Option: only one word key per file.
48 * Revision 1.4 1995/09/06 10:33:04 adam
49 * More work on present. Some log messages removed.
51 * Revision 1.3 1995/09/05 15:28:40 adam
52 * More work on search engine.
54 * Revision 1.2 1995/09/04 12:33:43 adam
55 * Various cleanup. YAZ util used instead.
57 * Revision 1.1 1995/09/04 09:10:41 adam
58 * More work on index add/del/update.
59 * Merge sort implemented.
60 * Initial work on z39 server.
72 ZServerInfo server_info;
74 bend_initresult *bend_init (bend_initrequest *q)
76 static bend_initresult r;
77 static char *name = "zserver";
83 logf (LOG_DEBUG, "bend_init");
84 server_info.sets = NULL;
85 if (!(server_info.sys_idx_fd = open (FNAME_SYS_IDX, O_RDONLY)))
87 logf (LOG_WARN|LOG_ERRNO, "sys_idx open fail");
89 r.errstring = "sys_idx open fail";
92 if (!(server_info.fileDict = dict_open (FNAME_FILE_DICT, 10, 0)))
94 logf (LOG_WARN, "dict_open fail: fname dict");
96 r.errstring = "dict_open fail: fname dict";
99 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
101 logf (LOG_WARN, "dict_open fail: word dict");
102 dict_close (server_info.fileDict);
104 r.errstring = "dict_open fail: word dict";
107 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
108 sizeof (struct it_key))))
110 logf (LOG_WARN, "is_open fail: word isam");
111 dict_close (server_info.wordDict);
112 dict_close (server_info.fileDict);
114 r.errstring = "is_open fail: word isam";
117 server_info.odr = odr_createmem (ODR_ENCODE);
121 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
123 static bend_searchresult r;
129 odr_reset (server_info.odr);
130 server_info.errCode = 0;
131 switch (q->query->which)
134 r.errcode = rpn_search (&server_info, q->query->u.type_1,
135 q->num_bases, q->basenames, q->setname,
144 static int record_read (int fd, char *buf, size_t count)
146 return read (fd, buf, count);
149 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
150 oid_value input_format, oid_value *output_format,
151 char **rec_bufp, int *rec_lenp)
153 char record_info[SYS_IDX_ENTRY_LEN];
154 char *fname, *file_type;
156 struct recRetrieveCtrl retrieveCtrl;
158 if (lseek (zi->sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN,
161 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: lseek of sys_idx");
164 if (read (zi->sys_idx_fd, record_info, SYS_IDX_ENTRY_LEN) == -1)
166 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: read of sys_idx");
169 file_type = record_info;
170 fname = record_info + strlen(record_info) + 1;
171 if (!(rt = recType_byName (file_type)))
173 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
177 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
178 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
180 char *msg = "Record doesn't exist";
181 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
182 *output_format = VAL_SUTRS;
184 *rec_lenp = strlen (msg);
185 return 0; /* or 14: System error in presenting records */
187 retrieveCtrl.localno = sysno;
188 retrieveCtrl.score = score;
189 retrieveCtrl.odr = stream;
190 retrieveCtrl.readf = record_read;
191 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
192 retrieveCtrl.diagnostic = 0;
193 (*rt->retrieve)(&retrieveCtrl);
194 *output_format = retrieveCtrl.output_format;
195 *rec_bufp = retrieveCtrl.rec_buf;
196 *rec_lenp = retrieveCtrl.rec_len;
197 close (retrieveCtrl.fd);
198 return retrieveCtrl.diagnostic;
201 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
203 static bend_fetchresult r;
205 ZServerSetSysno *records;
211 odr_reset (server_info.odr);
212 server_info.errCode = 0;
214 positions[0] = q->number;
215 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
218 logf (LOG_DEBUG, "resultSetRecordGet, error");
222 if (!records[0].sysno)
225 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
228 r.errcode = record_fetch (&server_info, records[0].sysno,
229 records[0].score, q->stream,
230 q->format, &r.format, &r.record, &r.len);
234 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
239 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
241 static bend_scanresult r;
244 odr_reset (server_info.odr);
245 server_info.errCode = 0;
248 r.term_position = q->term_position;
249 r.num_entries = q->num_entries;
250 r.errcode = rpn_scan (&server_info, server_info.odr, q->term,
252 &r.num_entries, &r.entries, &status);
257 void bend_close (void *handle)
259 dict_close (server_info.fileDict);
260 dict_close (server_info.wordDict);
261 is_close (server_info.wordIsam);
262 close (server_info.sys_idx_fd);
266 int main (int argc, char **argv)
268 char *base_name = "base";
270 if (!(common_resource = res_open (base_name)))
272 logf (LOG_FATAL, "Cannot open resource `%s'", base_name);
275 return statserv_main (argc, argv);