2 * Copyright (C) 1994-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.28 1998-01-29 13:40:11 adam
8 * Better logging for scan service.
10 * Revision 1.27 1997/10/27 14:33:06 adam
11 * Moved towards generic character mapping depending on "structure"
12 * field in abstract syntax file. Fixed a few memory leaks. Fixed
13 * bug with negative integers when doing searches with relational
16 * Revision 1.26 1997/09/29 12:41:35 adam
17 * Fixed bug regarding USE_TIMES var.
19 * Revision 1.25 1997/09/29 09:08:36 adam
20 * Revised locking system to be thread safe for the server.
22 * Revision 1.24 1997/09/17 12:19:19 adam
23 * Zebra version corresponds to YAZ version 1.4.
24 * Changed Zebra server so that it doesn't depend on global common_resource.
26 * Revision 1.23 1996/12/23 15:30:46 adam
28 * Bug fix: result sets weren't deleted after server shut down.
30 * Revision 1.22 1996/11/04 14:07:49 adam
31 * Moved truncation code to trunc.c.
33 * Revision 1.21 1996/10/29 14:09:58 adam
34 * Use of cisam system - enabled if setting isamc is 1.
36 * Revision 1.20 1996/06/04 10:19:02 adam
37 * Minor changes - removed include of ctype.h.
39 * Revision 1.19 1996/05/14 11:34:01 adam
40 * Scan support in multiple registers/databases.
42 * Revision 1.18 1996/05/14 06:16:50 adam
43 * Compact use/set bytes used in search service.
45 * Revision 1.17 1995/12/08 16:22:57 adam
46 * Work on update while servers are running. Three lock files introduced.
47 * The servers reload their registers when necessary, but they don't
48 * reestablish result sets yet.
50 * Revision 1.16 1995/12/07 17:38:48 adam
51 * Work locking mechanisms for concurrent updates/commit.
53 * Revision 1.15 1995/11/21 15:29:13 adam
54 * Config file 'base' read by default by both indexer and server.
56 * Revision 1.14 1995/11/16 17:00:57 adam
57 * Better logging of rpn query.
59 * Revision 1.13 1995/11/16 15:34:56 adam
60 * Uses new record management system in both indexer and server.
62 * Revision 1.12 1995/10/27 14:00:12 adam
63 * Implemented detection of database availability.
65 * Revision 1.11 1995/10/17 18:02:12 adam
66 * New feature: databases. Implemented as prefix to words in dictionary.
68 * Revision 1.10 1995/10/09 16:18:38 adam
69 * Function dict_lookup_grep got extra client data parameter.
71 * Revision 1.9 1995/10/06 14:38:01 adam
72 * New result set method: r_score.
73 * Local no (sysno) and score is transferred to retrieveCtrl.
75 * Revision 1.8 1995/10/06 13:52:06 adam
76 * Bug fixes. Handler may abort further scanning.
78 * Revision 1.7 1995/10/06 10:43:57 adam
79 * Scan added. 'occurrences' in scan entries not set yet.
81 * Revision 1.6 1995/09/28 09:19:48 adam
82 * xfree/xmalloc used everywhere.
83 * Extract/retrieve method seems to work for text records.
85 * Revision 1.5 1995/09/27 16:17:32 adam
86 * More work on retrieve.
88 * Revision 1.4 1995/09/14 11:53:28 adam
89 * First work on regular expressions/truncations.
91 * Revision 1.3 1995/09/08 08:53:23 adam
92 * Record buffer maintained in server_info.
94 * Revision 1.2 1995/09/06 16:11:19 adam
95 * Option: only one word key per file.
97 * Revision 1.1 1995/09/05 15:28:40 adam
98 * More work on search engine.
112 #include <sys/times.h>
126 typedef struct ZServerSet_ {
130 struct ZServerSet_ *next;
134 int registerState; /* 0 (no commit pages), 1 (use commit pages) */
135 time_t registerChange;
146 data1_attset *registered_sets;
150 ZebraLockHandle server_lock_cmt;
151 ZebraLockHandle server_lock_org;
152 char *server_path_prefix;
157 ZebraMaps zebra_maps;
160 int rpn_search (ZServerInfo *zi,
161 Z_RPNQuery *rpn, int num_bases, char **basenames,
162 const char *setname, int *hits);
164 int rpn_scan (ZServerInfo *zi, Z_AttributesPlusTerm *zapt,
165 oid_value attributeset,
166 int num_bases, char **basenames,
167 int *position, int *num_entries, struct scan_entry **list,
170 RSET rset_trunc (ZServerInfo *zi, ISAM_P *isam_p, int no);
172 ZServerSet *resultSetAdd (ZServerInfo *zi, const char *name,
174 ZServerSet *resultSetGet (ZServerInfo *zi, const char *name);
175 void resultSetDestroy (ZServerInfo *zi);
177 ZServerSetSysno *resultSetSysnoGet (ZServerInfo *zi, const char *name,
178 int num, int *positions);
179 void resultSetSysnoDel (ZServerInfo *zi, ZServerSetSysno *records, int num);
180 void zlog_rpn (Z_RPNQuery *rpn);
181 void zlog_scan (Z_AttributesPlusTerm *zapt, oid_value ast);
183 int zebra_server_lock_init (ZServerInfo *zi);
184 int zebra_server_lock_destroy (ZServerInfo *zi);
185 int zebra_server_lock (ZServerInfo *zi, int lockCommit);
186 void zebra_server_unlock (ZServerInfo *zi, int commitPhase);
187 int zebra_server_lock_get_state (ZServerInfo *zi, time_t *timep);
189 typedef struct attent
192 data1_local_attribute *local_attributes;
195 int att_getentbyatt(ZServerInfo *zi, attent *res, oid_value set, int att);