2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.34 1995-12-11 11:43:29 adam
8 * Locking based on fcntl instead of flock.
9 * Setting commitEnable removed. Command line option -n can be used to
10 * prevent commit if commit setting is defined in the configuration file.
12 * Revision 1.33 1995/12/08 16:22:53 adam
13 * Work on update while servers are running. Three lock files introduced.
14 * The servers reload their registers when necessary, but they don't
15 * reestablish result sets yet.
17 * Revision 1.32 1995/12/07 17:38:46 adam
18 * Work locking mechanisms for concurrent updates/commit.
20 * Revision 1.31 1995/12/06 12:41:22 adam
21 * New command 'stat' for the index program.
22 * Filenames can be read from stdin by specifying '-'.
23 * Bug fix/enhancement of the transformation from terms to regular
24 * expressons in the search engine.
26 * Revision 1.30 1995/12/05 11:25:02 adam
27 * Include of zebraver.h.
29 * Revision 1.29 1995/11/28 09:09:40 adam
30 * Zebra config renamed.
31 * Use setting 'recordId' to identify record now.
32 * Bug fix in recindex.c: rec_release_blocks was invokeded even
33 * though the blocks were already released.
34 * File traversal properly deletes records when needed.
36 * Revision 1.28 1995/11/27 13:58:53 adam
37 * New option -t. storeStore data implemented in server.
39 * Revision 1.27 1995/11/25 10:24:06 adam
40 * More record fields - they are enumerated now.
41 * New options: flagStoreData flagStoreKey.
43 * Revision 1.26 1995/11/22 17:19:17 adam
44 * Record management uses the bfile system.
46 * Revision 1.25 1995/11/21 15:29:12 adam
47 * Config file 'base' read by default by both indexer and server.
49 * Revision 1.24 1995/11/21 15:01:15 adam
50 * New general match criteria implemented.
51 * New feature: document groups.
53 * Revision 1.23 1995/11/20 16:59:45 adam
54 * New update method: the 'old' keys are saved for each records.
56 * Revision 1.22 1995/11/20 11:56:26 adam
57 * Work on new traversal.
59 * Revision 1.21 1995/11/16 15:34:55 adam
60 * Uses new record management system in both indexer and server.
62 * Revision 1.20 1995/11/15 14:46:18 adam
63 * Started work on better record management system.
65 * Revision 1.19 1995/10/27 14:00:11 adam
66 * Implemented detection of database availability.
68 * Revision 1.18 1995/10/17 18:02:08 adam
69 * New feature: databases. Implemented as prefix to words in dictionary.
71 * Revision 1.17 1995/10/13 16:01:49 adam
74 * Revision 1.16 1995/10/10 12:24:38 adam
75 * Temporary sort files are compressed.
77 * Revision 1.15 1995/10/04 16:57:19 adam
78 * Key input and merge sort in one pass.
80 * Revision 1.14 1995/09/29 14:01:40 adam
83 * Revision 1.13 1995/09/28 14:22:56 adam
84 * Sort uses smaller temporary files.
86 * Revision 1.12 1995/09/28 12:10:32 adam
87 * Bug fixes. Field prefix used in queries.
89 * Revision 1.11 1995/09/27 12:22:28 adam
90 * More work on extract in record control.
91 * Field name is not in isam keys but in prefix in dictionary words.
93 * Revision 1.10 1995/09/14 07:48:23 adam
94 * Record control management.
96 * Revision 1.9 1995/09/11 13:09:33 adam
97 * More work on relevance feedback.
99 * Revision 1.8 1995/09/08 14:52:27 adam
100 * Minor changes. Dictionary is lower case now.
102 * Revision 1.7 1995/09/06 16:11:16 adam
103 * Option: only one word key per file.
105 * Revision 1.6 1995/09/05 15:28:39 adam
106 * More work on search engine.
108 * Revision 1.5 1995/09/04 12:33:42 adam
109 * Various cleanup. YAZ util used instead.
111 * Revision 1.4 1995/09/04 09:10:35 adam
112 * More work on index add/del/update.
113 * Merge sort implemented.
114 * Initial work on z39 server.
116 * Revision 1.3 1995/09/01 14:06:35 adam
117 * Split of work into more files.
119 * Revision 1.2 1995/09/01 10:30:24 adam
120 * More work on indexing. Not working yet.
122 * Revision 1.1 1995/08/31 14:50:24 adam
123 * New simple file index tool.
127 #include <zebraver.h>
128 #include <alexutil.h>
132 #define IT_MAX_WORD 256
133 #define IT_KEY_HAVE_SEQNO 1
134 #define IT_KEY_HAVE_FIELD 0
141 enum dirsKind { dirs_dir, dirs_file };
167 struct dirs_info *dirs_open (Dict dict, const char *rep);
168 struct dirs_entry *dirs_read (struct dirs_info *p);
169 struct dirs_entry *dirs_last (struct dirs_info *p);
170 void dirs_mkdir (struct dirs_info *p, const char *src, int ctime);
171 void dirs_rmdir (struct dirs_info *p, const char *src);
172 void dirs_add (struct dirs_info *p, const char *src, int sysno, int ctime);
173 void dirs_del (struct dirs_info *p, const char *src);
174 void dirs_free (struct dirs_info **pp);
176 struct dir_entry *dir_open (const char *rep);
177 void dir_sort (struct dir_entry *e);
178 void dir_free (struct dir_entry **e_p);
180 void repositoryUpdate (struct recordGroup *rGroup);
181 void repositoryAdd (struct recordGroup *rGroup);
182 void repositoryDelete (struct recordGroup *rGroup);
184 void key_open (int mem);
185 int key_close (void);
186 void key_write (int cmd, struct it_key *k, const char *str);
187 int key_compare (const void *p1, const void *p2);
188 int key_qsort_compare (const void *p1, const void *p2);
189 void key_logdump (int mask, const void *p);
190 void key_input (const char *dict_fname, const char *isam_fname,
191 int nkeys, int cache);
192 int merge_sort (char **buf, int from, int to);
194 #define TEMP_FNAME "keys%d.tmp"
195 #define FNAME_WORD_DICT "worddict"
196 #define FNAME_WORD_ISAM "wordisam"
197 #define FNAME_CONFIG "zebra.cfg"
199 #define GMATCH_DICT "gmatch"
200 #define FMATCH_DICT "fmatch"
202 struct strtab *strtab_mk (void);
203 int strtab_src (struct strtab *t, const char *name, void ***infop);
204 void strtab_del (struct strtab *t,
205 void (*func)(const char *name, void *info, void *data),
207 int index_char_cvt (int c);
208 int index_word_prefix (char *string, int attset_ordinal,
209 int local_attribute, const char *databaseName);
211 int fileExtract (SYSNO *sysno, const char *fname,
212 const struct recordGroup *rGroup, int deleteFlag);
214 void rec_prstat (void);
216 void zebraLockPrefix (char *pathPrefix);
218 void zebraIndexLockMsg (const char *str);
219 void zebraIndexUnlock (void);
220 void zebraIndexLock (int commitNow);
221 int zebraIndexWait (int commitPhase);
223 #define FNAME_MAIN_LOCK "zebraidx.LCK"
224 #define FNAME_COMMIT_LOCK "zebracmt.LCK"
225 #define FNAME_ORG_LOCK "zebraorg.LCK"
226 #define FNAME_TOUCH_TIME "zebraidx.time"
228 int zebraLock (int fd, int wr);
229 int zebraLockNB (int fd, int wr);
230 int zebraUnlock (int fd);