2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.26 1995-11-25 10:24:07 adam
8 * More record fields - they are enumerated now.
9 * New options: flagStoreData flagStoreKey.
11 * Revision 1.25 1995/11/21 15:29:13 adam
12 * Config file 'base' read by default by both indexer and server.
14 * Revision 1.24 1995/11/20 16:59:47 adam
15 * New update method: the 'old' keys are saved for each records.
17 * Revision 1.23 1995/11/16 17:00:56 adam
18 * Better logging of rpn query.
20 * Revision 1.22 1995/11/16 15:34:55 adam
21 * Uses new record management system in both indexer and server.
23 * Revision 1.21 1995/11/01 16:25:52 quinn
24 * *** empty log message ***
26 * Revision 1.20 1995/10/27 14:00:12 adam
27 * Implemented detection of database availability.
29 * Revision 1.19 1995/10/17 18:02:11 adam
30 * New feature: databases. Implemented as prefix to words in dictionary.
32 * Revision 1.18 1995/10/16 14:03:09 quinn
33 * Changes to support element set names and espec1
35 * Revision 1.17 1995/10/16 09:32:40 adam
36 * More work on relational op.
38 * Revision 1.16 1995/10/13 12:26:44 adam
39 * Optimization of truncation.
41 * Revision 1.15 1995/10/12 12:40:55 adam
42 * Bug fixes in rpn_prox.
44 * Revision 1.14 1995/10/09 16:18:37 adam
45 * Function dict_lookup_grep got extra client data parameter.
47 * Revision 1.13 1995/10/06 14:38:00 adam
48 * New result set method: r_score.
49 * Local no (sysno) and score is transferred to retrieveCtrl.
51 * Revision 1.12 1995/10/06 13:52:06 adam
52 * Bug fixes. Handler may abort further scanning.
54 * Revision 1.11 1995/10/06 10:43:57 adam
55 * Scan added. 'occurrences' in scan entries not set yet.
57 * Revision 1.10 1995/10/02 16:43:32 quinn
58 * Set default resulting record type in fetch.
60 * Revision 1.9 1995/10/02 15:18:52 adam
61 * New member in recRetrieveCtrl: diagnostic.
63 * Revision 1.8 1995/09/28 09:19:47 adam
64 * xfree/xmalloc used everywhere.
65 * Extract/retrieve method seems to work for text records.
67 * Revision 1.7 1995/09/27 16:17:32 adam
68 * More work on retrieve.
70 * Revision 1.6 1995/09/08 08:53:22 adam
71 * Record buffer maintained in server_info.
73 * Revision 1.5 1995/09/06 16:11:18 adam
74 * Option: only one word key per file.
76 * Revision 1.4 1995/09/06 10:33:04 adam
77 * More work on present. Some log messages removed.
79 * Revision 1.3 1995/09/05 15:28:40 adam
80 * More work on search engine.
82 * Revision 1.2 1995/09/04 12:33:43 adam
83 * Various cleanup. YAZ util used instead.
85 * Revision 1.1 1995/09/04 09:10:41 adam
86 * More work on index add/del/update.
87 * Merge sort implemented.
88 * Initial work on z39 server.
102 ZServerInfo server_info;
104 bend_initresult *bend_init (bend_initrequest *q)
106 static bend_initresult r;
107 static char *name = "zserver";
113 logf (LOG_DEBUG, "bend_init");
115 if (!common_resource)
117 struct statserv_options_block *sob;
119 sob = statserv_getcontrol ();
120 logf (LOG_LOG, "Reading resources from %s", sob->configname);
121 if (!(common_resource = res_open (sob->configname)))
123 logf (LOG_FATAL, "Cannot open resource `%s'", sob->configname);
128 data1_tabpath = res_get(common_resource, "data1_tabpath");
129 server_info.sets = NULL;
131 server_info.records = rec_open (0);
132 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
134 logf (LOG_WARN, "dict_open fail: word dict");
136 r.errstring = "dict_open fail: word dict";
139 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
140 sizeof (struct it_key))))
142 logf (LOG_WARN, "is_open fail: word isam");
143 dict_close (server_info.wordDict);
145 r.errstring = "is_open fail: word isam";
148 server_info.odr = odr_createmem (ODR_ENCODE);
152 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
154 static bend_searchresult r;
161 odr_reset (server_info.odr);
162 server_info.errCode = 0;
163 server_info.errString = NULL;
165 logf (LOG_LOG, "ResultSet '%s'", q->setname);
166 switch (q->query->which)
169 r.errcode = rpn_search (&server_info, q->query->u.type_1,
170 q->num_bases, q->basenames, q->setname,
172 r.errstring = server_info.errString;
180 static int record_read (int fd, char *buf, size_t count)
182 return read (fd, buf, count);
185 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
186 oid_value input_format, Z_RecordComposition *comp,
187 oid_value *output_format, char **rec_bufp,
191 char *fname, *file_type;
193 struct recRetrieveCtrl retrieveCtrl;
195 rec = rec_get (zi->records, sysno);
196 file_type = rec->info[recInfo_fileType];
197 fname = rec->info[recInfo_filename];
199 if (!(rt = recType_byName (file_type)))
201 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
205 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
206 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
208 char *msg = "Record doesn't exist";
209 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
210 *output_format = VAL_SUTRS;
212 *rec_lenp = strlen (msg);
214 return 0; /* or 14: System error in presenting records */
216 retrieveCtrl.localno = sysno;
217 retrieveCtrl.score = score;
218 retrieveCtrl.odr = stream;
219 retrieveCtrl.readf = record_read;
220 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
221 retrieveCtrl.comp = comp;
222 retrieveCtrl.diagnostic = 0;
223 (*rt->retrieve)(&retrieveCtrl);
224 *output_format = retrieveCtrl.output_format;
225 *rec_bufp = retrieveCtrl.rec_buf;
226 *rec_lenp = retrieveCtrl.rec_len;
227 close (retrieveCtrl.fd);
230 return retrieveCtrl.diagnostic;
233 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
235 static bend_fetchresult r;
237 ZServerSetSysno *records;
243 odr_reset (server_info.odr);
244 server_info.errCode = 0;
246 positions[0] = q->number;
247 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
250 logf (LOG_DEBUG, "resultSetRecordGet, error");
254 if (!records[0].sysno)
257 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
260 r.errcode = record_fetch (&server_info, records[0].sysno,
261 records[0].score, q->stream, q->format,
262 q->comp, &r.format, &r.record, &r.len);
263 resultSetSysnoDel (&server_info, records, 1);
267 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
272 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
274 static bend_scanresult r;
277 odr_reset (server_info.odr);
278 server_info.errCode = 0;
279 server_info.errString = 0;
281 r.term_position = q->term_position;
282 r.num_entries = q->num_entries;
283 r.errcode = rpn_scan (&server_info, q->term,
284 q->num_bases, q->basenames,
286 &r.num_entries, &r.entries, &status);
287 r.errstring = server_info.errString;
292 void bend_close (void *handle)
294 dict_close (server_info.wordDict);
295 is_close (server_info.wordIsam);
296 rec_close (&server_info.records);
300 int main (int argc, char **argv)
302 struct statserv_options_block *sob;
304 sob = statserv_getcontrol ();
305 strcpy (sob->configname, "base");
306 statserv_setcontrol (sob);
308 return statserv_main (argc, argv);