2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.14 1995-10-09 16:18:37 adam
8 * Function dict_lookup_grep got extra client data parameter.
10 * Revision 1.13 1995/10/06 14:38:00 adam
11 * New result set method: r_score.
12 * Local no (sysno) and score is transferred to retrieveCtrl.
14 * Revision 1.12 1995/10/06 13:52:06 adam
15 * Bug fixes. Handler may abort further scanning.
17 * Revision 1.11 1995/10/06 10:43:57 adam
18 * Scan added. 'occurrences' in scan entries not set yet.
20 * Revision 1.10 1995/10/02 16:43:32 quinn
21 * Set default resulting record type in fetch.
23 * Revision 1.9 1995/10/02 15:18:52 adam
24 * New member in recRetrieveCtrl: diagnostic.
26 * Revision 1.8 1995/09/28 09:19:47 adam
27 * xfree/xmalloc used everywhere.
28 * Extract/retrieve method seems to work for text records.
30 * Revision 1.7 1995/09/27 16:17:32 adam
31 * More work on retrieve.
33 * Revision 1.6 1995/09/08 08:53:22 adam
34 * Record buffer maintained in server_info.
36 * Revision 1.5 1995/09/06 16:11:18 adam
37 * Option: only one word key per file.
39 * Revision 1.4 1995/09/06 10:33:04 adam
40 * More work on present. Some log messages removed.
42 * Revision 1.3 1995/09/05 15:28:40 adam
43 * More work on search engine.
45 * Revision 1.2 1995/09/04 12:33:43 adam
46 * Various cleanup. YAZ util used instead.
48 * Revision 1.1 1995/09/04 09:10:41 adam
49 * More work on index add/del/update.
50 * Merge sort implemented.
51 * Initial work on z39 server.
63 ZServerInfo server_info;
65 bend_initresult *bend_init (bend_initrequest *q)
67 static bend_initresult r;
68 static char *name = "zserver";
74 server_info.sets = NULL;
75 if (!(server_info.sys_idx_fd = open (FNAME_SYS_IDX, O_RDONLY)))
78 r.errstring = "dict_open fail: filedict";
81 if (!(server_info.fileDict = dict_open (FNAME_FILE_DICT, 10, 0)))
84 r.errstring = "dict_open fail: filedict";
87 if (!(server_info.wordDict = dict_open (FNAME_WORD_DICT, 40, 0)))
89 dict_close (server_info.fileDict);
91 r.errstring = "dict_open fail: worddict";
94 if (!(server_info.wordIsam = is_open (FNAME_WORD_ISAM, key_compare, 0,
95 sizeof (struct it_key))))
97 dict_close (server_info.wordDict);
98 dict_close (server_info.fileDict);
100 r.errstring = "is_open fail: wordisam";
103 server_info.odr = odr_createmem (ODR_ENCODE);
107 bend_searchresult *bend_search (void *handle, bend_searchrequest *q, int *fd)
109 static bend_searchresult r;
115 odr_reset (server_info.odr);
116 server_info.errCode = 0;
117 switch (q->query->which)
120 r.errcode = rpn_search (&server_info, q->query->u.type_1,
121 q->num_bases, q->basenames, q->setname,
130 static int record_read (int fd, char *buf, size_t count)
132 return read (fd, buf, count);
135 static int record_fetch (ZServerInfo *zi, int sysno, int score, ODR stream,
136 oid_value input_format, oid_value *output_format,
137 char **rec_bufp, int *rec_lenp)
139 char record_info[SYS_IDX_ENTRY_LEN];
140 char *fname, *file_type;
142 struct recRetrieveCtrl retrieveCtrl;
144 if (lseek (zi->sys_idx_fd, sysno * SYS_IDX_ENTRY_LEN,
147 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: lseek of sys_idx");
150 if (read (zi->sys_idx_fd, record_info, SYS_IDX_ENTRY_LEN) == -1)
152 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: read of sys_idx");
155 file_type = record_info;
156 fname = record_info + strlen(record_info) + 1;
157 if (!(rt = recType_byName (file_type)))
159 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Cannot handle type %s",
163 if ((retrieveCtrl.fd = open (fname, O_RDONLY)) == -1)
165 logf (LOG_FATAL|LOG_ERRNO, "Retrieve: Open record file %s", fname);
168 logf (LOG_DEBUG, "retrieve localno=%d score=%d", sysno, score);
169 retrieveCtrl.localno = sysno;
170 retrieveCtrl.score = score;
171 retrieveCtrl.odr = stream;
172 retrieveCtrl.readf = record_read;
173 retrieveCtrl.input_format = retrieveCtrl.output_format = input_format;
174 retrieveCtrl.diagnostic = 0;
175 (*rt->retrieve)(&retrieveCtrl);
176 *output_format = retrieveCtrl.output_format;
177 *rec_bufp = retrieveCtrl.rec_buf;
178 *rec_lenp = retrieveCtrl.rec_len;
179 close (retrieveCtrl.fd);
180 return retrieveCtrl.diagnostic;
183 bend_fetchresult *bend_fetch (void *handle, bend_fetchrequest *q, int *num)
185 static bend_fetchresult r;
187 ZServerSetSysno *records;
193 odr_reset (server_info.odr);
194 server_info.errCode = 0;
196 positions[0] = q->number;
197 records = resultSetSysnoGet (&server_info, q->setname, 1, positions);
200 logf (LOG_DEBUG, "resultSetRecordGet, error");
204 if (!records[0].sysno)
207 logf (LOG_DEBUG, "Out of range. pos=%d", q->number);
210 r.errcode = record_fetch (&server_info, records[0].sysno,
211 records[0].score, q->stream,
212 q->format, &r.format, &r.record, &r.len);
216 bend_deleteresult *bend_delete (void *handle, bend_deleterequest *q, int *num)
221 bend_scanresult *bend_scan (void *handle, bend_scanrequest *q, int *num)
223 static bend_scanresult r;
226 odr_reset (server_info.odr);
227 server_info.errCode = 0;
230 r.term_position = q->term_position;
231 r.num_entries = q->num_entries;
232 r.errcode = rpn_scan (&server_info, server_info.odr, q->term,
234 &r.num_entries, &r.entries, &status);
239 void bend_close (void *handle)
241 dict_close (server_info.fileDict);
242 dict_close (server_info.wordDict);
243 is_close (server_info.wordIsam);
244 close (server_info.sys_idx_fd);
248 int main (int argc, char **argv)
250 char *base_name = "base";
252 if (!(common_resource = res_open (base_name)))
254 logf (LOG_FATAL, "Cannot open resource `%s'", base_name);
257 return statserv_main (argc, argv);