2 * Copyright (C) 1995-1998, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.2 1998-05-20 10:12:19 adam
8 * Implemented automatic EXPLAIN database maintenance.
9 * Modified Zebra to work with ASN.1 compiled version of YAZ.
11 * Revision 1.1 1998/03/05 08:45:13 adam
12 * New result set model and modular ranking system. Moved towards
13 * descent server API. System information stored as "SGML" records.
27 static int zebra_register_lock (ZebraHandle zh)
30 int state = zebra_server_lock_get_state(zh, &lastChange);
40 zebra_server_lock (zh, state);
44 if (zh->registerState == state)
46 if (zh->registerChange >= lastChange)
48 logf (LOG_LOG, "Register completely updated since last access");
50 else if (zh->registerState == -1)
51 logf (LOG_LOG, "Reading register using state %d pid=%ld", state,
54 logf (LOG_LOG, "Register has changed state from %d to %d",
55 zh->registerState, state);
56 zh->registerChange = lastChange;
59 zebraExplain_close (zh->zei, 0, 0);
60 dict_close (zh->dict);
61 sortIdx_close (zh->sortIdx);
65 isc_close (zh->isamc);
66 rec_close (&zh->records);
68 bf_cache (zh->bfs, state ? res_get (zh->res, "shadow") : NULL);
69 zh->registerState = state;
70 zh->records = rec_open (zh->bfs, 0);
71 if (!(zh->dict = dict_open (zh->bfs, FNAME_DICT, 40, 0)))
73 if (!(zh->sortIdx = sortIdx_open (zh->bfs, 0)))
77 if (!res_get_match (zh->res, "isam", "i", NULL))
79 if (!(zh->isamc = isc_open (zh->bfs, FNAME_ISAMC,
80 0, key_isamc_m(zh->res))))
86 if (!(zh->isam = is_open (zh->bfs, FNAME_ISAM, key_compare, 0,
87 sizeof (struct it_key), zh->res)))
90 zh->zei = zebraExplain_open (zh->records, zh->dh, zh->res, 0, 0, 0);
95 static void zebra_register_unlock (ZebraHandle zh)
97 static int waitSec = -1;
101 logf (LOG_LOG, "user/system: %ld/%ld",
102 (long) (zh->tms2.tms_utime - zh->tms1.tms_utime),
103 (long) (zh->tms2.tms_stime - zh->tms1.tms_stime));
107 char *s = res_get (zh->res, "debugRequestWait");
118 if (zh->registerState != -1)
119 zebra_server_unlock (zh, zh->registerState);
122 ZebraHandle zebra_open (const char *host, const char *configName)
124 ZebraHandle zh = xmalloc (sizeof(*zh));
126 if (!(zh->res = res_open (configName)))
128 logf (LOG_WARN, "Failed to read resources `%s'", configName);
131 zebra_server_lock_init (zh);
132 zh->dh = data1_create ();
133 zh->bfs = bfs_create (res_get (zh->res, "register"));
134 bf_lockDir (zh->bfs, res_get (zh->res, "lockDir"));
135 data1_set_tabpath (zh->dh, res_get(zh->res, "profilePath"));
137 zh->registerState = -1; /* trigger open of registers! */
138 zh->registerChange = 0;
141 zh->zebra_maps = zebra_maps_open (zh->res);
142 zh->rank_classes = NULL;
144 zebraRankInstall (zh, rank1_class);
148 void zebra_close (ZebraHandle zh)
152 resultSetDestroy (zh);
153 zebraExplain_close (zh->zei, 0, 0);
154 dict_close (zh->dict);
155 sortIdx_close (zh->sortIdx);
159 isc_close (zh->isamc);
160 rec_close (&zh->records);
161 zebra_register_unlock (zh);
163 zebra_maps_close (zh->zebra_maps);
164 zebraRankDestroy (zh);
165 bfs_destroy (zh->bfs);
166 data1_destroy (zh->dh);
167 zebra_server_lock_destroy (zh);
173 void zebra_search_rpn (ZebraHandle zh, ODR stream,
174 Z_RPNQuery *query, int num_bases, char **basenames,
177 zebra_register_lock (zh);
179 zh->errString = NULL;
181 rpn_search (zh, stream, query, num_bases, basenames, setname);
182 zebra_register_unlock (zh);
185 void zebra_records_retrieve (ZebraHandle zh, ODR stream,
186 const char *setname, Z_RecordComposition *comp,
187 oid_value input_format, int num_recs,
188 ZebraRetrievalRecord *recs)
193 pos_array = xmalloc (sizeof(*pos_array));
194 for (i = 0; i<num_recs; i++)
195 pos_array[i] = recs[i].position;
197 zebra_register_lock (zh);
199 poset = zebraPosSetCreate (zh, setname, num_recs, pos_array);
202 logf (LOG_DEBUG, "zebraPosSetCreate error");
207 for (i = 0; i<num_recs; i++)
212 logf (LOG_DEBUG, "Out of range. pos=%d", pos_array[i]);
217 zebra_record_fetch (zh, poset[i].sysno, poset[i].score,
218 stream, input_format, comp,
219 &recs[i].format, &recs[i].buf,
224 zebraPosSetDestroy (zh, poset, num_recs);
226 zebra_register_unlock (zh);
230 void zebra_scan (ZebraHandle zh, ODR stream, Z_AttributesPlusTerm *zapt,
231 oid_value attributeset,
232 int num_bases, char **basenames,
233 int *position, int *num_entries, ZebraScanEntry **entries,
236 zebra_register_lock (zh);
237 rpn_scan (zh, stream, zapt, attributeset,
238 num_bases, basenames, position,
239 num_entries, entries, is_partial);
240 zebra_register_unlock (zh);
243 void zebra_sort (ZebraHandle zh, ODR stream,
244 int num_input_setnames, char **input_setnames,
245 char *output_setname, Z_SortKeySpecList *sort_sequence,
248 zebra_register_lock (zh);
249 resultSetSort (zh, stream, num_input_setnames, input_setnames,
250 output_setname, sort_sequence, sort_status);
251 zebra_register_unlock (zh);
254 void zebra_setDB (ZebraHandle zh, int num_bases, char **basenames)
259 void zebra_setRecordType (ZebraHandle zh, const char *type)
264 void zebra_setGroup (ZebraHandle zh, const char *group)
269 void zebra_admin (ZebraHandle zh, const char *command)