2 * Copyright (C) 1995-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.58 1998-05-20 10:12:16 adam
8 * Implemented automatic EXPLAIN database maintenance.
9 * Modified Zebra to work with ASN.1 compiled version of YAZ.
11 * Revision 1.57 1998/03/05 08:45:12 adam
12 * New result set model and modular ranking system. Moved towards
13 * descent server API. System information stored as "SGML" records.
15 * Revision 1.56 1998/01/12 15:04:08 adam
16 * The test option (-s) only uses read-lock (and not write lock).
18 * Revision 1.55 1997/10/27 14:33:04 adam
19 * Moved towards generic character mapping depending on "structure"
20 * field in abstract syntax file. Fixed a few memory leaks. Fixed
21 * bug with negative integers when doing searches with relational
24 * Revision 1.54 1997/09/29 09:08:36 adam
25 * Revised locking system to be thread safe for the server.
27 * Revision 1.53 1997/09/25 14:54:43 adam
28 * WIN32 files lock support.
30 * Revision 1.52 1997/09/22 12:39:06 adam
31 * Added get_pos method for the ranked result sets.
33 * Revision 1.51 1997/09/18 08:59:19 adam
34 * Extra generic handle for the character mapping routines.
36 * Revision 1.50 1997/09/17 12:19:13 adam
37 * Zebra version corresponds to YAZ version 1.4.
38 * Changed Zebra server so that it doesn't depend on global common_resource.
40 * Revision 1.49 1997/09/05 15:30:08 adam
41 * Changed prototype for chr_map_input - added const.
42 * Added support for C++, headers uses extern "C" for public definitions.
44 * Revision 1.48 1997/02/12 20:39:45 adam
45 * Implemented options -f <n> that limits the log to the first <n>
47 * Changed some log messages also.
49 * Revision 1.47 1996/12/23 15:30:44 adam
51 * Bug fix: result sets weren't deleted after server shut down.
53 * Revision 1.46 1996/11/08 11:10:19 adam
54 * Buffers used during file match got bigger.
55 * Compressed ISAM support everywhere.
56 * Bug fixes regarding masking characters in queries.
57 * Redesigned Regexp-2 queries.
59 * Revision 1.45 1996/10/29 14:09:42 adam
60 * Use of cisam system - enabled if setting isamc is 1.
62 * Revision 1.44 1996/06/06 12:08:40 quinn
63 * Added showRecord function
65 * Revision 1.43 1996/06/04 10:18:12 adam
66 * Search/scan uses character mapping module.
68 * Revision 1.42 1996/06/04 08:20:16 quinn
71 * Revision 1.41 1996/06/04 07:54:55 quinn
74 * Revision 1.40 1996/05/31 09:06:58 quinn
75 * Work on character-set handling
77 * Revision 1.39 1996/05/14 14:04:33 adam
78 * In zebraidx, the 'stat' command is improved. Statistics about ISAM/DICT
81 * Revision 1.38 1996/04/12 07:02:23 adam
82 * File update of single files.
84 * Revision 1.37 1996/03/26 16:01:13 adam
85 * New setting lockPath: directory of various lock files.
87 * Revision 1.36 1996/03/21 14:50:09 adam
88 * File update uses modify-time instead of change-time.
90 * Revision 1.35 1996/02/12 18:45:36 adam
91 * New fileVerboseFlag in record group control.
93 * Revision 1.34 1995/12/11 11:43:29 adam
94 * Locking based on fcntl instead of flock.
95 * Setting commitEnable removed. Command line option -n can be used to
96 * prevent commit if commit setting is defined in the configuration file.
98 * Revision 1.33 1995/12/08 16:22:53 adam
99 * Work on update while servers are running. Three lock files introduced.
100 * The servers reload their registers when necessary, but they don't
101 * reestablish result sets yet.
103 * Revision 1.32 1995/12/07 17:38:46 adam
104 * Work locking mechanisms for concurrent updates/commit.
106 * Revision 1.31 1995/12/06 12:41:22 adam
107 * New command 'stat' for the index program.
108 * Filenames can be read from stdin by specifying '-'.
109 * Bug fix/enhancement of the transformation from terms to regular
110 * expressons in the search engine.
112 * Revision 1.30 1995/12/05 11:25:02 adam
113 * Include of zebraver.h.
115 * Revision 1.29 1995/11/28 09:09:40 adam
116 * Zebra config renamed.
117 * Use setting 'recordId' to identify record now.
118 * Bug fix in recindex.c: rec_release_blocks was invokeded even
119 * though the blocks were already released.
120 * File traversal properly deletes records when needed.
122 * Revision 1.28 1995/11/27 13:58:53 adam
123 * New option -t. storeStore data implemented in server.
125 * Revision 1.27 1995/11/25 10:24:06 adam
126 * More record fields - they are enumerated now.
127 * New options: flagStoreData flagStoreKey.
129 * Revision 1.26 1995/11/22 17:19:17 adam
130 * Record management uses the bfile system.
132 * Revision 1.25 1995/11/21 15:29:12 adam
133 * Config file 'base' read by default by both indexer and server.
135 * Revision 1.24 1995/11/21 15:01:15 adam
136 * New general match criteria implemented.
137 * New feature: document groups.
139 * Revision 1.23 1995/11/20 16:59:45 adam
140 * New update method: the 'old' keys are saved for each records.
142 * Revision 1.22 1995/11/20 11:56:26 adam
143 * Work on new traversal.
145 * Revision 1.21 1995/11/16 15:34:55 adam
146 * Uses new record management system in both indexer and server.
148 * Revision 1.20 1995/11/15 14:46:18 adam
149 * Started work on better record management system.
151 * Revision 1.19 1995/10/27 14:00:11 adam
152 * Implemented detection of database availability.
154 * Revision 1.18 1995/10/17 18:02:08 adam
155 * New feature: databases. Implemented as prefix to words in dictionary.
157 * Revision 1.17 1995/10/13 16:01:49 adam
160 * Revision 1.16 1995/10/10 12:24:38 adam
161 * Temporary sort files are compressed.
163 * Revision 1.15 1995/10/04 16:57:19 adam
164 * Key input and merge sort in one pass.
166 * Revision 1.14 1995/09/29 14:01:40 adam
169 * Revision 1.13 1995/09/28 14:22:56 adam
170 * Sort uses smaller temporary files.
172 * Revision 1.12 1995/09/28 12:10:32 adam
173 * Bug fixes. Field prefix used in queries.
175 * Revision 1.11 1995/09/27 12:22:28 adam
176 * More work on extract in record control.
177 * Field name is not in isam keys but in prefix in dictionary words.
179 * Revision 1.10 1995/09/14 07:48:23 adam
180 * Record control management.
182 * Revision 1.9 1995/09/11 13:09:33 adam
183 * More work on relevance feedback.
185 * Revision 1.8 1995/09/08 14:52:27 adam
186 * Minor changes. Dictionary is lower case now.
188 * Revision 1.7 1995/09/06 16:11:16 adam
189 * Option: only one word key per file.
191 * Revision 1.6 1995/09/05 15:28:39 adam
192 * More work on search engine.
194 * Revision 1.5 1995/09/04 12:33:42 adam
195 * Various cleanup. YAZ util used instead.
197 * Revision 1.4 1995/09/04 09:10:35 adam
198 * More work on index add/del/update.
199 * Merge sort implemented.
200 * Initial work on z39 server.
202 * Revision 1.3 1995/09/01 14:06:35 adam
203 * Split of work into more files.
205 * Revision 1.2 1995/09/01 10:30:24 adam
206 * More work on indexing. Not working yet.
208 * Revision 1.1 1995/08/31 14:50:24 adam
209 * New simple file index tool.
213 #include <zebraver.h>
214 #include <zebrautl.h>
215 #include <zebramap.h>
222 #define IT_MAX_WORD 256
223 #define IT_KEY_HAVE_SEQNO 1
224 #define IT_KEY_HAVE_FIELD 0
233 enum dirsKind { dirs_dir, dirs_file };
258 int fileVerboseLimit;
261 ZebraMaps zebra_maps;
264 void getFnameTmp (char *fname, int no);
266 struct dirs_info *dirs_open (Dict dict, const char *rep, int rw);
267 struct dirs_info *dirs_fopen (Dict dict, const char *path);
268 struct dirs_entry *dirs_read (struct dirs_info *p);
269 struct dirs_entry *dirs_last (struct dirs_info *p);
270 void dirs_mkdir (struct dirs_info *p, const char *src, time_t mtime);
271 void dirs_rmdir (struct dirs_info *p, const char *src);
272 void dirs_add (struct dirs_info *p, const char *src, int sysno, time_t mtime);
273 void dirs_del (struct dirs_info *p, const char *src);
274 void dirs_free (struct dirs_info **pp);
276 struct dir_entry *dir_open (const char *rep);
277 void dir_sort (struct dir_entry *e);
278 void dir_free (struct dir_entry **e_p);
280 void repositoryUpdate (struct recordGroup *rGroup);
281 void repositoryAdd (struct recordGroup *rGroup);
282 void repositoryDelete (struct recordGroup *rGroup);
283 void repositoryShow (struct recordGroup *rGroup);
285 int key_open (struct recordGroup *rGroup, int mem);
286 int key_close (struct recordGroup *group);
287 int key_compare (const void *p1, const void *p2);
288 int key_get_pos (const void *p);
289 int key_compare_it (const void *p1, const void *p2);
290 int key_qsort_compare (const void *p1, const void *p2);
291 void key_logdump (int mask, const void *p);
292 void inv_prstat (BFiles bfs);
293 void key_input (BFiles bfs, int nkeys, int cache);
294 ISAMC_M key_isamc_m (Res res);
295 int merge_sort (char **buf, int from, int to);
297 #define FNAME_DICT "dict"
298 #define FNAME_ISAM "isam"
299 #define FNAME_ISAMC "isamc"
300 #define FNAME_CONFIG "zebra.cfg"
302 #define GMATCH_DICT "gmatch"
303 #define FMATCH_DICT "fmatch"
305 struct strtab *strtab_mk (void);
306 int strtab_src (struct strtab *t, const char *name, void ***infop);
307 void strtab_del (struct strtab *t,
308 void (*func)(const char *name, void *info, void *data),
310 int index_char_cvt (int c);
311 int index_word_prefix (char *string, int attset_ordinal,
312 int local_attribute, const char *databaseName);
314 int fileExtract (SYSNO *sysno, const char *fname,
315 const struct recordGroup *rGroup, int deleteFlag);
317 void zebraIndexLockMsg (const char *str);
318 void zebraIndexUnlock (void);
319 void zebraIndexLock (BFiles bfs, int commitNow, const char *rval);
320 int zebraIndexWait (int commitPhase);
322 #define FNAME_MAIN_LOCK "zebraidx.LCK"
323 #define FNAME_COMMIT_LOCK "zebracmt.LCK"
324 #define FNAME_ORG_LOCK "zebraorg.LCK"
325 #define FNAME_TOUCH_TIME "zebraidx.time"
327 typedef struct zebra_lock_info *ZebraLockHandle;
328 ZebraLockHandle zebra_lock_create(const char *file, int excl_flag);
329 void zebra_lock_destroy (ZebraLockHandle h);
330 int zebra_lock (ZebraLockHandle h);
331 int zebra_lock_nb (ZebraLockHandle h);
332 int zebra_unlock (ZebraLockHandle h);
333 int zebra_lock_fd (ZebraLockHandle h);
334 void zebra_lock_prefix (Res res, char *dst);
336 void zebra_load_atts (data1_handle dh, Res res);
338 extern Res common_resource;