2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.16 1995-10-13 12:26:44 adam
8 * Optimization of truncation.
10 * Revision 1.15 1995/10/12 12:40:55 adam
11 * Bug fixes in rpn_prox.
13 * Revision 1.14 1995/10/09 16:18:37 adam
14 * Function dict_lookup_grep got extra client data parameter.
16 * Revision 1.13 1995/10/06 14:38:00 adam
17 * New result set method: r_score.
18 * Local no (sysno) and score is transferred to retrieveCtrl.
20 * Revision 1.12 1995/10/06 13:52:06 adam
21 * Bug fixes. Handler may abort further scanning.
23 * Revision 1.11 1995/10/06 10:43:57 adam
24 * Scan added. 'occurrences' in scan entries not set yet.
26 * Revision 1.10 1995/10/02 16:43:32 quinn
27 * Set default resulting record type in fetch.
29 * Revision 1.9 1995/10/02 15:18:52 adam
30 * New member in recRetrieveCtrl: diagnostic.
32 * Revision 1.8 1995/09/28 09:19:47 adam
33 * xfree/xmalloc used everywhere.
34 * Extract/retrieve method seems to work for text records.
36 * Revision 1.7 1995/09/27 16:17:32 adam
37 * More work on retrieve.
39 * Revision 1.6 1995/09/08 08:53:22 adam
40 * Record buffer maintained in server_info.
42 * Revision 1.5 1995/09/06 16:11:18 adam
43 * Option: only one word key per file.
45 * Revision 1.4 1995/09/06 10:33:04 adam
46 * More work on present. Some log messages removed.
48 * Revision 1.3 1995/09/05 15:28:40 adam
49 * More work on search engine.
51 * Revision 1.2 1995/09/04 12:33:43 adam
52 * Various cleanup. YAZ util used instead.
54 * Revision 1.1 1995/09/04 09:10:41 adam
55 * More work on index add/del/update.
56 * Merge sort implemented.
57 * Initial work on z39 server.
69 ZServerInfo server_info;
71 bend_initresult *bend_init (bend_initrequest *q)
73 static bend_initresult r;
74 static char *name = "zserver";
80 logf (LOG_DEBUG, "bend_init");
81 server_info.sets = NULL;
82 if (!(server_info.sys_idx_fd = open (FNAME_SYS_IDX, O_RDONLY)))
84 logf (LOG_WARN|LOG_ERRNO, "sys_idx open fail");
86 r.errstring = "sys_idx open fail";
89 if (!(server_info.fileDict = dict_open (FNAME_FILE_DICT, 10, 0)))
91 logf (LOG_WARN, "dict_open fail: fname dict");
93 r.errstring = "dict_open fail: fname dict";
96 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
98 logf (LOG_WARN, "dict_open fail: word dict");
99 dict_close (server_info.fileDict);
101 r.errstring = "dict_open fail: word dict";
104 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
105 sizeof (struct it_key))))
107 logf (LOG_WARN, "is_open fail: word isam");
108 dict_close (server_info.wordDict);
109 dict_close (server_info.fileDict);
111 r.errstring = "is_open fail: word isam";
114 server_info.odr = odr_createmem (ODR_ENCODE);
118 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
120 static bend_searchresult r;
126 odr_reset (server_info.odr);
127 server_info.errCode = 0;
128 switch (q->query->which)
131 r.errcode = rpn_search (&server_info, q->query->u.type_1,
132 q->num_bases, q->basenames, q->setname,
141 static int record_read (int fd, char *buf, size_t count)
143 return read (fd, buf, count);
146 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
147 oid_value input_format, oid_value *output_format,
148 char **rec_bufp, int *rec_lenp)
150 char record_info[SYS_IDX_ENTRY_LEN];
151 char *fname, *file_type;
153 struct recRetrieveCtrl retrieveCtrl;
155 if (lseek (zi->sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN,
158 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: lseek of sys_idx");
161 if (read (zi->sys_idx_fd, record_info, SYS_IDX_ENTRY_LEN) == -1)
163 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: read of sys_idx");
166 file_type = record_info;
167 fname = record_info + strlen(record_info) + 1;
168 if (!(rt = recType_byName (file_type)))
170 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
174 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
175 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
177 const char *msg = "Record doesn't exist";
178 logf (LOG_WARN|LOG_ERRNO, "Retrieve: Open record file %s", fname);
179 *output_format = VAL_SUTRS;
181 *rec_lenp = strlen (msg);
182 return 0; /* or 14: System error in presenting records */
184 retrieveCtrl.localno = sysno;
185 retrieveCtrl.score = score;
186 retrieveCtrl.odr = stream;
187 retrieveCtrl.readf = record_read;
188 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
189 retrieveCtrl.diagnostic = 0;
190 (*rt->retrieve)(&retrieveCtrl);
191 *output_format = retrieveCtrl.output_format;
192 *rec_bufp = retrieveCtrl.rec_buf;
193 *rec_lenp = retrieveCtrl.rec_len;
194 close (retrieveCtrl.fd);
195 return retrieveCtrl.diagnostic;
198 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
200 static bend_fetchresult r;
202 ZServerSetSysno *records;
208 odr_reset (server_info.odr);
209 server_info.errCode = 0;
211 positions[0] = q->number;
212 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
215 logf (LOG_DEBUG, "resultSetRecordGet, error");
219 if (!records[0].sysno)
222 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
225 r.errcode = record_fetch (&server_info, records[0].sysno,
226 records[0].score, q->stream,
227 q->format, &r.format, &r.record, &r.len);
231 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
236 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
238 static bend_scanresult r;
241 odr_reset (server_info.odr);
242 server_info.errCode = 0;
245 r.term_position = q->term_position;
246 r.num_entries = q->num_entries;
247 r.errcode = rpn_scan (&server_info, server_info.odr, q->term,
249 &r.num_entries, &r.entries, &status);
254 void bend_close (void *handle)
256 dict_close (server_info.fileDict);
257 dict_close (server_info.wordDict);
258 is_close (server_info.wordIsam);
259 close (server_info.sys_idx_fd);
263 int main (int argc, char **argv)
265 char *base_name = "base";
267 if (!(common_resource = res_open (base_name)))
269 logf (LOG_FATAL, "Cannot open resource `%s'", base_name);
272 return statserv_main (argc, argv);