2 * Copyright (C) 1995-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.59 1998-06-12 12:22:13 adam
10 * Revision 1.58 1998/05/27 16:57:46 adam
11 * Zebra returns surrogate diagnostic for single records when
14 * Revision 1.57 1998/04/03 14:45:18 adam
15 * Fixed setting of last_in_set in bend_fetch.
17 * Revision 1.56 1998/03/05 08:45:13 adam
18 * New result set model and modular ranking system. Moved towards
19 * descent server API. System information stored as "SGML" records.
21 * Revision 1.55 1998/02/10 12:03:06 adam
24 * Revision 1.54 1998/01/29 13:39:13 adam
25 * Compress ISAM is default.
27 * Revision 1.53 1998/01/12 15:04:09 adam
28 * The test option (-s) only uses read-lock (and not write lock).
30 * Revision 1.52 1997/11/18 10:05:08 adam
31 * Changed character map facility so that admin can specify character
32 * mapping files for each register type, w, p, etc.
34 * Revision 1.51 1997/10/27 14:33:06 adam
35 * Moved towards generic character mapping depending on "structure"
36 * field in abstract syntax file. Fixed a few memory leaks. Fixed
37 * bug with negative integers when doing searches with relational
40 * Revision 1.50 1997/09/29 09:08:36 adam
41 * Revised locking system to be thread safe for the server.
43 * Revision 1.49 1997/09/25 14:57:23 adam
46 * Revision 1.48 1997/09/17 12:19:19 adam
47 * Zebra version corresponds to YAZ version 1.4.
48 * Changed Zebra server so that it doesn't depend on global common_resource.
50 * Revision 1.47 1997/09/04 13:58:36 adam
51 * New retrieve/extract method tellf (added).
52 * Added O_BINARY for open calls.
54 * Revision 1.46 1997/07/28 08:30:47 adam
55 * Server returns diagnostic 14 when record doesn't exist.
57 * Revision 1.45 1996/12/23 15:30:45 adam
59 * Bug fix: result sets weren't deleted after server shut down.
61 * Revision 1.44 1996/12/11 12:08:01 adam
62 * Added better compression.
64 * Revision 1.43 1996/11/15 15:03:58 adam
65 * Logging of execution speed by using the times(2) call.
67 * Revision 1.42 1996/11/08 11:10:36 adam
68 * Buffers used during file match got bigger.
69 * Compressed ISAM support everywhere.
70 * Bug fixes regarding masking characters in queries.
71 * Redesigned Regexp-2 queries.
73 * Revision 1.41 1996/10/29 14:09:56 adam
74 * Use of cisam system - enabled if setting isamc is 1.
76 * Revision 1.40 1996/06/04 10:19:02 adam
77 * Minor changes - removed include of ctype.h.
79 * Revision 1.39 1996/05/31 09:07:05 quinn
80 * Work on character-set handling
82 * Revision 1.38 1996/05/14 11:34:01 adam
83 * Scan support in multiple registers/databases.
85 * Revision 1.37 1996/05/14 06:16:48 adam
86 * Compact use/set bytes used in search service.
88 * Revision 1.36 1996/05/01 13:46:37 adam
89 * First work on multiple records in one file.
90 * New option, -offset, to the "unread" command in the filter module.
92 * Revision 1.35 1996/03/26 16:01:14 adam
93 * New setting lockPath: directory of various lock files.
95 * Revision 1.34 1996/03/20 09:36:46 adam
96 * Function dict_lookup_grep got extra parameter, init_pos, which marks
97 * from which position in pattern approximate pattern matching should occur.
98 * Approximate pattern matching is used in relevance=re-2.
100 * Revision 1.33 1996/01/17 14:57:56 adam
101 * Prototype changed for reader functions in extract/retrieve. File
102 * is identified by 'void *' instead of 'int.
104 * Revision 1.32 1995/12/11 09:12:58 adam
105 * The rec_get function returns NULL if record doesn't exist - will
106 * happen in the server if the result set records have been deleted since
107 * the creation of the set (i.e. the search).
108 * The server saves a result temporarily if it is 'volatile', i.e. the
109 * set is register dependent.
111 * Revision 1.31 1995/12/08 16:22:56 adam
112 * Work on update while servers are running. Three lock files introduced.
113 * The servers reload their registers when necessary, but they don't
114 * reestablish result sets yet.
116 * Revision 1.30 1995/12/07 17:38:48 adam
117 * Work locking mechanisms for concurrent updates/commit.
119 * Revision 1.29 1995/12/04 14:22:32 adam
120 * Extra arg to recType_byName.
121 * Started work on new regular expression parsed input to
122 * structured records.
124 * Revision 1.28 1995/11/28 09:09:48 adam
125 * Zebra config renamed.
126 * Use setting 'recordId' to identify record now.
127 * Bug fix in recindex.c: rec_release_blocks was invokeded even
128 * though the blocks were already released.
129 * File traversal properly deletes records when needed.
131 * Revision 1.27 1995/11/27 13:58:54 adam
132 * New option -t. storeStore data implemented in server.
134 * Revision 1.26 1995/11/25 10:24:07 adam
135 * More record fields - they are enumerated now.
136 * New options: flagStoreData flagStoreKey.
138 * Revision 1.25 1995/11/21 15:29:13 adam
139 * Config file 'base' read by default by both indexer and server.
141 * Revision 1.24 1995/11/20 16:59:47 adam
142 * New update method: the 'old' keys are saved for each records.
144 * Revision 1.23 1995/11/16 17:00:56 adam
145 * Better logging of rpn query.
147 * Revision 1.22 1995/11/16 15:34:55 adam
148 * Uses new record management system in both indexer and server.
150 * Revision 1.21 1995/11/01 16:25:52 quinn
151 * *** empty log message ***
153 * Revision 1.20 1995/10/27 14:00:12 adam
154 * Implemented detection of database availability.
156 * Revision 1.19 1995/10/17 18:02:11 adam
157 * New feature: databases. Implemented as prefix to words in dictionary.
159 * Revision 1.18 1995/10/16 14:03:09 quinn
160 * Changes to support element set names and espec1
162 * Revision 1.17 1995/10/16 09:32:40 adam
163 * More work on relational op.
165 * Revision 1.16 1995/10/13 12:26:44 adam
166 * Optimization of truncation.
168 * Revision 1.15 1995/10/12 12:40:55 adam
169 * Bug fixes in rpn_prox.
171 * Revision 1.14 1995/10/09 16:18:37 adam
172 * Function dict_lookup_grep got extra client data parameter.
174 * Revision 1.13 1995/10/06 14:38:00 adam
175 * New result set method: r_score.
176 * Local no (sysno) and score is transferred to retrieveCtrl.
178 * Revision 1.12 1995/10/06 13:52:06 adam
179 * Bug fixes. Handler may abort further scanning.
181 * Revision 1.11 1995/10/06 10:43:57 adam
182 * Scan added. 'occurrences' in scan entries not set yet.
184 * Revision 1.10 1995/10/02 16:43:32 quinn
185 * Set default resulting record type in fetch.
187 * Revision 1.9 1995/10/02 15:18:52 adam
188 * New member in recRetrieveCtrl: diagnostic.
190 * Revision 1.8 1995/09/28 09:19:47 adam
191 * xfree/xmalloc used everywhere.
192 * Extract/retrieve method seems to work for text records.
194 * Revision 1.7 1995/09/27 16:17:32 adam
195 * More work on retrieve.
197 * Revision 1.6 1995/09/08 08:53:22 adam
198 * Record buffer maintained in server_info.
200 * Revision 1.5 1995/09/06 16:11:18 adam
201 * Option: only one word key per file.
203 * Revision 1.4 1995/09/06 10:33:04 adam
204 * More work on present. Some log messages removed.
206 * Revision 1.3 1995/09/05 15:28:40 adam
207 * More work on search engine.
209 * Revision 1.2 1995/09/04 12:33:43 adam
210 * Various cleanup. YAZ util used instead.
212 * Revision 1.1 1995/09/04 09:10:41 adam
213 * More work on index add/del/update.
214 * Merge sort implemented.
215 * Initial work on z39 server.
234 static int bend_sort (void *handle, bend_sort_rr *rr);
236 bend_initresult *bend_init (bend_initrequest *q)
238 bend_initresult *r = odr_malloc (q->stream, sizeof(*r));
240 struct statserv_options_block *sob;
244 q->bend_sort = bend_sort;
246 logf (LOG_DEBUG, "bend_init");
248 sob = statserv_getcontrol ();
249 if (!(zh = zebra_open (sob->configname)))
251 logf (LOG_FATAL, "Failed to open Zebra `%s'", sob->configname);
259 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
261 ZebraHandle zh = handle;
262 bend_searchresult *r = odr_malloc (q->stream, sizeof(*r));
268 logf (LOG_LOG, "ResultSet '%s'", q->setname);
269 switch (q->query->which)
271 case Z_Query_type_1: case Z_Query_type_101:
272 zebra_search_rpn (zh, q->stream, q->query->u.type_1,
273 q->num_bases, q->basenames, q->setname);
274 r->errcode = zh->errCode;
275 r->errstring = zh->errString;
284 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
286 ZebraHandle zh = handle;
287 bend_fetchresult *r = odr_malloc (q->stream, sizeof(*r));
288 ZebraRetrievalRecord retrievalRecord;
290 retrievalRecord.position = q->number;
293 zebra_records_retrieve (zh, q->stream, q->setname, q->comp,
294 q->format, 1, &retrievalRecord);
295 if (zh->errCode) /* non Surrogate Diagnostic */
297 r->errcode = zh->errCode;
298 r->errstring = zh->errString;
300 else if (retrievalRecord.errCode) /* Surrogate Diagnostic */
302 q->surrogate_flag = 1;
303 r->errcode = retrievalRecord.errCode;
304 r->errstring = retrievalRecord.errString;
305 r->basename = retrievalRecord.base;
307 else /* Database Record */
310 r->basename = retrievalRecord.base;
311 r->record = retrievalRecord.buf;
312 r->len = retrievalRecord.len;
313 r->format = retrievalRecord.format;
318 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
323 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
325 ZebraScanEntry *entries;
326 ZebraHandle zh = handle;
327 bend_scanresult *r = odr_malloc (q->stream, sizeof(*r));
330 r->term_position = q->term_position;
331 r->num_entries = q->num_entries;
333 r->entries = odr_malloc (q->stream, sizeof(*r->entries) * q->num_entries);
334 zebra_scan (zh, q->stream, q->term,
336 q->num_bases, q->basenames,
338 &r->num_entries, &entries, &is_partial);
340 r->status = BEND_SCAN_PARTIAL;
342 r->status = BEND_SCAN_SUCCESS;
343 for (i = 0; i < r->num_entries; i++)
345 r->entries[i].term = entries[i].term;
346 r->entries[i].occurrences = entries[i].occurrences;
348 r->errcode = zh->errCode;
349 r->errstring = zh->errString;
353 void bend_close (void *handle)
355 zebra_close ((ZebraHandle) handle);
358 int bend_sort (void *handle, bend_sort_rr *rr)
360 ZebraHandle zh = handle;
362 zebra_sort (zh, rr->stream, rr->num_input_setnames, rr->input_setnames,
363 rr->output_setname, rr->sort_sequence, &rr->sort_status);
364 rr->errcode = zh->errCode;
365 rr->errstring = zh->errString;
370 static void pre_init (struct statserv_options_block *sob)
372 char *pidfile = "zebrasrv.pid";
373 int fd = creat (pidfile, 0666);
376 logf (LOG_WARN|LOG_ERRNO, "creat %s", pidfile);
381 sprintf (pidstr, "%ld", (long) getpid ());
382 write (fd, pidstr, strlen(pidstr));
388 int main (int argc, char **argv)
390 struct statserv_options_block *sob;
392 sob = statserv_getcontrol ();
393 strcpy (sob->configname, FNAME_CONFIG);
395 sob->pre_init = pre_init;
397 statserv_setcontrol (sob);
399 return statserv_main (argc, argv);