2 * Copyright (C) 1995-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.5 1998-06-13 00:14:08 adam
10 * Revision 1.4 1998/06/12 12:22:12 adam
13 * Revision 1.3 1998/05/27 16:57:44 adam
14 * Zebra returns surrogate diagnostic for single records when
17 * Revision 1.2 1998/05/20 10:12:19 adam
18 * Implemented automatic EXPLAIN database maintenance.
19 * Modified Zebra to work with ASN.1 compiled version of YAZ.
21 * Revision 1.1 1998/03/05 08:45:13 adam
22 * New result set model and modular ranking system. Moved towards
23 * descent server API. System information stored as "SGML" records.
38 static int zebra_register_lock (ZebraHandle zh)
41 int state = zebra_server_lock_get_state(zh, &lastChange);
51 zebra_server_lock (zh, state);
55 if (zh->registerState == state)
57 if (zh->registerChange >= lastChange)
59 logf (LOG_LOG, "Register completely updated since last access");
61 else if (zh->registerState == -1)
62 logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
65 logf (LOG_LOG, "Register has changed state from %d to %d",
66 zh->registerState, state);
67 zh->registerChange = lastChange;
70 zebraExplain_close (zh->zei, 0, 0);
71 dict_close (zh->dict);
72 sortIdx_close (zh->sortIdx);
76 isc_close (zh->isamc);
77 rec_close (&zh->records);
79 bf_cache (zh->bfs, state ? res_get (zh->res, "shadow") : NULL);
80 zh->registerState = state;
81 zh->records = rec_open (zh->bfs, 0);
82 if (!(zh->dict = dict_open (zh->bfs, FNAME_DICT, 40, 0)))
84 if (!(zh->sortIdx = sortIdx_open (zh->bfs, 0)))
88 if (!res_get_match (zh->res, "isam", "i", NULL))
90 if (!(zh->isamc = isc_open (zh->bfs, FNAME_ISAMC,
91 0, key_isamc_m(zh->res))))
97 if (!(zh->isam = is_open (zh->bfs, FNAME_ISAM, key_compare, 0,
98 sizeof (struct it_key), zh->res)))
101 zh->zei = zebraExplain_open (zh->records, zh->dh, zh->res, 0, 0, 0);
106 static void zebra_register_unlock (ZebraHandle zh)
108 static int waitSec = -1;
112 logf (LOG_LOG, "user/system: %ld/%ld",
113 (long) (zh->tms2.tms_utime - zh->tms1.tms_utime),
114 (long) (zh->tms2.tms_stime - zh->tms1.tms_stime));
118 char *s = res_get (zh->res, "debugRequestWait");
129 if (zh->registerState != -1)
130 zebra_server_unlock (zh, zh->registerState);
133 ZebraHandle zebra_open (const char *configName)
135 ZebraHandle zh = xmalloc (sizeof(*zh));
137 if (!(zh->res = res_open (configName)))
139 logf (LOG_WARN, "Failed to read resources `%s'", configName);
142 zebra_server_lock_init (zh);
143 zh->dh = data1_create ();
144 zh->bfs = bfs_create (res_get (zh->res, "register"));
145 bf_lockDir (zh->bfs, res_get (zh->res, "lockDir"));
146 data1_set_tabpath (zh->dh, res_get(zh->res, "profilePath"));
148 zh->registerState = -1; /* trigger open of registers! */
149 zh->registerChange = 0;
152 zh->zebra_maps = zebra_maps_open (zh->res);
153 zh->rank_classes = NULL;
157 zebraRankInstall (zh, rank1_class);
161 void zebra_close (ZebraHandle zh)
165 resultSetDestroy (zh);
166 zebraExplain_close (zh->zei, 0, 0);
167 dict_close (zh->dict);
168 sortIdx_close (zh->sortIdx);
172 isc_close (zh->isamc);
173 rec_close (&zh->records);
174 zebra_register_unlock (zh);
176 zebra_maps_close (zh->zebra_maps);
177 zebraRankDestroy (zh);
178 bfs_destroy (zh->bfs);
179 data1_destroy (zh->dh);
180 zebra_server_lock_destroy (zh);
186 void zebra_search_rpn (ZebraHandle zh, ODR stream,
187 Z_RPNQuery *query, int num_bases, char **basenames,
190 zebra_register_lock (zh);
192 zh->errString = NULL;
194 rpn_search (zh, stream, query, num_bases, basenames, setname);
195 zebra_register_unlock (zh);
198 void zebra_records_retrieve (ZebraHandle zh, ODR stream,
199 const char *setname, Z_RecordComposition *comp,
200 oid_value input_format, int num_recs,
201 ZebraRetrievalRecord *recs)
207 zh->errString = NULL;
208 pos_array = xmalloc (num_recs * sizeof(*pos_array));
209 for (i = 0; i<num_recs; i++)
210 pos_array[i] = recs[i].position;
212 zebra_register_lock (zh);
214 poset = zebraPosSetCreate (zh, setname, num_recs, pos_array);
217 logf (LOG_DEBUG, "zebraPosSetCreate error");
222 for (i = 0; i<num_recs; i++)
227 logf (LOG_DEBUG, "Out of range. pos=%d", pos_array[i]);
232 zebra_record_fetch (zh, poset[i].sysno, poset[i].score,
233 stream, input_format, comp,
234 &recs[i].format, &recs[i].buf,
237 recs[i].errString = NULL;
240 zebraPosSetDestroy (zh, poset, num_recs);
242 zebra_register_unlock (zh);
246 void zebra_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
247 oid_value attributeset,
248 int num_bases, char **basenames,
249 int *position, int *num_entries, ZebraScanEntry **entries,
253 zh->errString = NULL;
254 zebra_register_lock (zh);
255 rpn_scan (zh, stream, zapt, attributeset,
256 num_bases, basenames, position,
257 num_entries, entries, is_partial);
258 zebra_register_unlock (zh);
261 void zebra_sort (ZebraHandle zh, ODR stream,
262 int num_input_setnames, char **input_setnames,
263 char *output_setname, Z_SortKeySpecList *sort_sequence,
267 zh->errString = NULL;
268 zebra_register_lock (zh);
269 resultSetSort (zh, stream, num_input_setnames, input_setnames,
270 output_setname, sort_sequence, sort_status);
271 zebra_register_unlock (zh);
274 int zebra_errCode (ZebraHandle zh)
279 const char *zebra_errString (ZebraHandle zh)
281 return diagbib1_str (zh->errCode);
284 char *zebra_errAdd (ZebraHandle zh)
286 return zh->errString;
289 int zebra_hits (ZebraHandle zh)
294 void zebra_setDB (ZebraHandle zh, int num_bases, char **basenames)
299 void zebra_setRecordType (ZebraHandle zh, const char *type)
304 void zebra_setGroup (ZebraHandle zh, const char *group)
309 void zebra_admin (ZebraHandle zh, const char *command)