2 * Copyright (C) 1995-1999, Index Data
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.62 1999-05-12 13:08:06 adam
8 * First version of ISAMS.
10 * Revision 1.61 1999/03/09 16:27:49 adam
11 * More work on SDRKit integration.
13 * Revision 1.60 1998/10/16 08:14:31 adam
14 * Updated record control system.
16 * Revision 1.59 1998/06/08 14:43:11 adam
17 * Added suport for EXPLAIN Proxy servers - added settings databasePath
18 * and explainDatabase to facilitate this. Increased maximum number
19 * of databases and attributes in one register.
21 * Revision 1.58 1998/05/20 10:12:16 adam
22 * Implemented automatic EXPLAIN database maintenance.
23 * Modified Zebra to work with ASN.1 compiled version of YAZ.
25 * Revision 1.57 1998/03/05 08:45:12 adam
26 * New result set model and modular ranking system. Moved towards
27 * descent server API. System information stored as "SGML" records.
29 * Revision 1.56 1998/01/12 15:04:08 adam
30 * The test option (-s) only uses read-lock (and not write lock).
32 * Revision 1.55 1997/10/27 14:33:04 adam
33 * Moved towards generic character mapping depending on "structure"
34 * field in abstract syntax file. Fixed a few memory leaks. Fixed
35 * bug with negative integers when doing searches with relational
38 * Revision 1.54 1997/09/29 09:08:36 adam
39 * Revised locking system to be thread safe for the server.
41 * Revision 1.53 1997/09/25 14:54:43 adam
42 * WIN32 files lock support.
44 * Revision 1.52 1997/09/22 12:39:06 adam
45 * Added get_pos method for the ranked result sets.
47 * Revision 1.51 1997/09/18 08:59:19 adam
48 * Extra generic handle for the character mapping routines.
50 * Revision 1.50 1997/09/17 12:19:13 adam
51 * Zebra version corresponds to YAZ version 1.4.
52 * Changed Zebra server so that it doesn't depend on global common_resource.
54 * Revision 1.49 1997/09/05 15:30:08 adam
55 * Changed prototype for chr_map_input - added const.
56 * Added support for C++, headers uses extern "C" for public definitions.
58 * Revision 1.48 1997/02/12 20:39:45 adam
59 * Implemented options -f <n> that limits the log to the first <n>
61 * Changed some log messages also.
63 * Revision 1.47 1996/12/23 15:30:44 adam
65 * Bug fix: result sets weren't deleted after server shut down.
67 * Revision 1.46 1996/11/08 11:10:19 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 1.45 1996/10/29 14:09:42 adam
74 * Use of cisam system - enabled if setting isamc is 1.
76 * Revision 1.44 1996/06/06 12:08:40 quinn
77 * Added showRecord function
79 * Revision 1.43 1996/06/04 10:18:12 adam
80 * Search/scan uses character mapping module.
82 * Revision 1.42 1996/06/04 08:20:16 quinn
85 * Revision 1.41 1996/06/04 07:54:55 quinn
88 * Revision 1.40 1996/05/31 09:06:58 quinn
89 * Work on character-set handling
91 * Revision 1.39 1996/05/14 14:04:33 adam
92 * In zebraidx, the 'stat' command is improved. Statistics about ISAM/DICT
95 * Revision 1.38 1996/04/12 07:02:23 adam
96 * File update of single files.
98 * Revision 1.37 1996/03/26 16:01:13 adam
99 * New setting lockPath: directory of various lock files.
101 * Revision 1.36 1996/03/21 14:50:09 adam
102 * File update uses modify-time instead of change-time.
104 * Revision 1.35 1996/02/12 18:45:36 adam
105 * New fileVerboseFlag in record group control.
107 * Revision 1.34 1995/12/11 11:43:29 adam
108 * Locking based on fcntl instead of flock.
109 * Setting commitEnable removed. Command line option -n can be used to
110 * prevent commit if commit setting is defined in the configuration file.
112 * Revision 1.33 1995/12/08 16:22:53 adam
113 * Work on update while servers are running. Three lock files introduced.
114 * The servers reload their registers when necessary, but they don't
115 * reestablish result sets yet.
117 * Revision 1.32 1995/12/07 17:38:46 adam
118 * Work locking mechanisms for concurrent updates/commit.
120 * Revision 1.31 1995/12/06 12:41:22 adam
121 * New command 'stat' for the index program.
122 * Filenames can be read from stdin by specifying '-'.
123 * Bug fix/enhancement of the transformation from terms to regular
124 * expressons in the search engine.
126 * Revision 1.30 1995/12/05 11:25:02 adam
127 * Include of zebraver.h.
129 * Revision 1.29 1995/11/28 09:09:40 adam
130 * Zebra config renamed.
131 * Use setting 'recordId' to identify record now.
132 * Bug fix in recindex.c: rec_release_blocks was invokeded even
133 * though the blocks were already released.
134 * File traversal properly deletes records when needed.
136 * Revision 1.28 1995/11/27 13:58:53 adam
137 * New option -t. storeStore data implemented in server.
139 * Revision 1.27 1995/11/25 10:24:06 adam
140 * More record fields - they are enumerated now.
141 * New options: flagStoreData flagStoreKey.
143 * Revision 1.26 1995/11/22 17:19:17 adam
144 * Record management uses the bfile system.
146 * Revision 1.25 1995/11/21 15:29:12 adam
147 * Config file 'base' read by default by both indexer and server.
149 * Revision 1.24 1995/11/21 15:01:15 adam
150 * New general match criteria implemented.
151 * New feature: document groups.
153 * Revision 1.23 1995/11/20 16:59:45 adam
154 * New update method: the 'old' keys are saved for each records.
156 * Revision 1.22 1995/11/20 11:56:26 adam
157 * Work on new traversal.
159 * Revision 1.21 1995/11/16 15:34:55 adam
160 * Uses new record management system in both indexer and server.
162 * Revision 1.20 1995/11/15 14:46:18 adam
163 * Started work on better record management system.
165 * Revision 1.19 1995/10/27 14:00:11 adam
166 * Implemented detection of database availability.
168 * Revision 1.18 1995/10/17 18:02:08 adam
169 * New feature: databases. Implemented as prefix to words in dictionary.
171 * Revision 1.17 1995/10/13 16:01:49 adam
174 * Revision 1.16 1995/10/10 12:24:38 adam
175 * Temporary sort files are compressed.
177 * Revision 1.15 1995/10/04 16:57:19 adam
178 * Key input and merge sort in one pass.
180 * Revision 1.14 1995/09/29 14:01:40 adam
183 * Revision 1.13 1995/09/28 14:22:56 adam
184 * Sort uses smaller temporary files.
186 * Revision 1.12 1995/09/28 12:10:32 adam
187 * Bug fixes. Field prefix used in queries.
189 * Revision 1.11 1995/09/27 12:22:28 adam
190 * More work on extract in record control.
191 * Field name is not in isam keys but in prefix in dictionary words.
193 * Revision 1.10 1995/09/14 07:48:23 adam
194 * Record control management.
196 * Revision 1.9 1995/09/11 13:09:33 adam
197 * More work on relevance feedback.
199 * Revision 1.8 1995/09/08 14:52:27 adam
200 * Minor changes. Dictionary is lower case now.
202 * Revision 1.7 1995/09/06 16:11:16 adam
203 * Option: only one word key per file.
205 * Revision 1.6 1995/09/05 15:28:39 adam
206 * More work on search engine.
208 * Revision 1.5 1995/09/04 12:33:42 adam
209 * Various cleanup. YAZ util used instead.
211 * Revision 1.4 1995/09/04 09:10:35 adam
212 * More work on index add/del/update.
213 * Merge sort implemented.
214 * Initial work on z39 server.
216 * Revision 1.3 1995/09/01 14:06:35 adam
217 * Split of work into more files.
219 * Revision 1.2 1995/09/01 10:30:24 adam
220 * More work on indexing. Not working yet.
222 * Revision 1.1 1995/08/31 14:50:24 adam
223 * New simple file index tool.
227 #include <zebraver.h>
228 #include <zebrautl.h>
229 #include <zebramap.h>
238 #define IT_MAX_WORD 256
239 #define IT_KEY_HAVE_SEQNO 1
240 #define IT_KEY_HAVE_FIELD 0
249 enum dirsKind { dirs_dir, dirs_file };
273 int fileVerboseLimit;
274 int databaseNamePath;
281 ZebraMaps zebra_maps;
285 void getFnameTmp (char *fname, int no);
287 struct dirs_info *dirs_open (Dict dict, const char *rep, int rw);
288 struct dirs_info *dirs_fopen (Dict dict, const char *path);
289 struct dirs_entry *dirs_read (struct dirs_info *p);
290 struct dirs_entry *dirs_last (struct dirs_info *p);
291 void dirs_mkdir (struct dirs_info *p, const char *src, time_t mtime);
292 void dirs_rmdir (struct dirs_info *p, const char *src);
293 void dirs_add (struct dirs_info *p, const char *src, int sysno, time_t mtime);
294 void dirs_del (struct dirs_info *p, const char *src);
295 void dirs_free (struct dirs_info **pp);
297 struct dir_entry *dir_open (const char *rep);
298 void dir_sort (struct dir_entry *e);
299 void dir_free (struct dir_entry **e_p);
301 void repositoryUpdate (struct recordGroup *rGroup);
302 void repositoryAdd (struct recordGroup *rGroup);
303 void repositoryDelete (struct recordGroup *rGroup);
304 void repositoryShow (struct recordGroup *rGroup);
306 int key_open (struct recordGroup *rGroup, int mem);
307 int key_close (struct recordGroup *group);
308 int key_compare (const void *p1, const void *p2);
309 int key_get_pos (const void *p);
310 int key_compare_it (const void *p1, const void *p2);
311 int key_qsort_compare (const void *p1, const void *p2);
312 void key_logdump (int mask, const void *p);
313 void inv_prstat (BFiles bfs);
314 void inv_compact (BFiles bfs);
315 void key_input (BFiles bfs, int nkeys, int cache);
316 ISAMC_M key_isamc_m (Res res);
317 ISAMS_M key_isams_m (Res res);
318 int merge_sort (char **buf, int from, int to);
319 int key_SU_code (int ch, char *out);
321 #define FNAME_DICT "dict"
322 #define FNAME_ISAM "isam"
323 #define FNAME_ISAMC "isamc"
324 #define FNAME_ISAMS "isams"
325 #define FNAME_CONFIG "zebra.cfg"
327 #define GMATCH_DICT "gmatch"
328 #define FMATCH_DICT "fmatch"
330 struct strtab *strtab_mk (void);
331 int strtab_src (struct strtab *t, const char *name, void ***infop);
332 void strtab_del (struct strtab *t,
333 void (*func)(const char *name, void *info, void *data),
335 int index_char_cvt (int c);
336 int index_word_prefix (char *string, int attset_ordinal,
337 int local_attribute, const char *databaseName);
339 int fileExtract (SYSNO *sysno, const char *fname,
340 const struct recordGroup *rGroup, int deleteFlag);
342 void zebraIndexLockMsg (const char *str);
343 void zebraIndexUnlock (void);
344 void zebraIndexLock (BFiles bfs, int commitNow, const char *rval);
345 int zebraIndexWait (int commitPhase);
347 #define FNAME_MAIN_LOCK "zebraidx.LCK"
348 #define FNAME_COMMIT_LOCK "zebracmt.LCK"
349 #define FNAME_ORG_LOCK "zebraorg.LCK"
350 #define FNAME_TOUCH_TIME "zebraidx.time"
352 typedef struct zebra_lock_info *ZebraLockHandle;
353 ZebraLockHandle zebra_lock_create(const char *file, int excl_flag);
354 void zebra_lock_destroy (ZebraLockHandle h);
355 int zebra_lock (ZebraLockHandle h);
356 int zebra_lock_nb (ZebraLockHandle h);
357 int zebra_unlock (ZebraLockHandle h);
358 int zebra_lock_fd (ZebraLockHandle h);
359 void zebra_lock_prefix (Res res, char *dst);
361 void zebra_load_atts (data1_handle dh, Res res);
363 extern Res common_resource;