2 * Copyright (C) 1994-1995, Index Data I/S
4 * Sebastian Hammer, Adam Dickmeiss
7 * Revision 1.15 1995-11-20 16:59:46 adam
8 * New update method: the 'old' keys are saved for each records.
10 * Revision 1.14 1995/10/30 15:08:08 adam
13 * Revision 1.13 1995/10/27 14:00:11 adam
14 * Implemented detection of database availability.
16 * Revision 1.12 1995/10/17 18:02:08 adam
17 * New feature: databases. Implemented as prefix to words in dictionary.
19 * Revision 1.11 1995/10/06 16:33:37 adam
20 * Use attribute mappings.
22 * Revision 1.10 1995/09/29 14:01:41 adam
25 * Revision 1.9 1995/09/28 12:10:32 adam
26 * Bug fixes. Field prefix used in queries.
28 * Revision 1.8 1995/09/28 09:19:42 adam
29 * xfree/xmalloc used everywhere.
30 * Extract/retrieve method seems to work for text records.
32 * Revision 1.7 1995/09/27 12:22:28 adam
33 * More work on extract in record control.
34 * Field name is not in isam keys but in prefix in dictionary words.
36 * Revision 1.6 1995/09/14 07:48:23 adam
37 * Record control management.
39 * Revision 1.5 1995/09/11 13:09:34 adam
40 * More work on relevance feedback.
42 * Revision 1.4 1995/09/08 14:52:27 adam
43 * Minor changes. Dictionary is lower case now.
45 * Revision 1.3 1995/09/07 13:58:36 adam
46 * New parameter: result-set file descriptor (RSFD) to support multiple
47 * positions within the same result-set.
48 * Boolean operators: and, or, not implemented.
49 * Result-set references.
51 * Revision 1.2 1995/09/06 16:11:17 adam
52 * Option: only one word key per file.
54 * Revision 1.1 1995/09/04 09:10:36 adam
55 * More work on index add/del/update.
56 * Merge sort implemented.
57 * Initial work on z39 server.
69 void key_logdump (int logmask, const void *p)
73 memcpy (&key, p, sizeof(key));
74 logf (logmask, "%7d s=%-4d", key.sysno, key.seqno);
77 int key_compare (const void *p1, const void *p2)
80 memcpy (&i1, p1, sizeof(i1));
81 memcpy (&i2, p2, sizeof(i2));
82 if (i1.sysno != i2.sysno)
84 if (i1.sysno > i2.sysno)
90 if (i1.seqno != i2.seqno)
92 if (i1.seqno > i2.seqno)
98 if (i1.freq != i2.freq)
100 if (i1.freq > i2.freq)
109 int key_qsort_compare (const void *p1, const void *p2)
113 char *cp1 = *(char **) p1;
114 char *cp2 = *(char **) p2;
116 if ((r = strcmp (cp1, cp2)))
119 if ((r = key_compare (cp1+l+1, cp2+l+1)))
121 return cp1[l] - cp2[l];
124 int index_char_cvt (int c)
129 int index_word_prefix (char *string, int attset_ordinal,
131 const char *databaseName)
134 sprintf (string, "%s@%c%04d", databaseName,
135 attset_ordinal + '0', local_attribute);
136 for (i = 0; string[i]; i++)
137 string[i] = index_char_cvt (string[i]);