Difference between revisions of "Dbxupd()"
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| − | == | + | ==PURPOSE== |
| − | + | ||
| − | + | ||
| + | update all tags in the tagged index file for the specified record | ||
| Line 12: | Line 11: | ||
<input parameters> | <input parameters> | ||
| − | char *dbx; /* Tagged index file descriptor | + | char *dbx; /* Tagged index file descriptor */ |
| − | long recno; /* Record number to update tag from | + | long recno; /* Record number to update tag from */ |
| Line 22: | Line 21: | ||
==RETURN VALUE== | ==RETURN VALUE== | ||
| − | The dbxupd() function returns 0 for success, or < 0 if an error occurs. See the section on return code values for a detailed list of return codes. | + | The dbxupd() function returns 0 for success, or < 0 if an error occurs. See the section on [[Library Return Code Values|return code values]] for a detailed list of return codes. |
| Line 37: | Line 36: | ||
<code lang="c"> | <code lang="c"> | ||
| − | + | ||
| − | + | #include <stdio.h> | |
| − | + | #include "dbl.h" /* Recital/Library include file */ | |
| + | #include "dblproto.h" /* Recital/Library prototype file */ | ||
static dBFIELD fields[6] = { | static dBFIELD fields[6] = { | ||
| Line 61: | Line 61: | ||
main() | main() | ||
{ | { | ||
| − | + | int rc; /* Return Code for error handling */ | |
| − | + | char *dbf; /* File descriptor for table */ | |
| − | + | char *dbx; /* File descriptor for tagged index */ | |
| − | + | FLDNUM fieldcount; /* Number of fields to create */ | |
| − | + | int i; /* Loop control variable */ | |
| − | + | long recno; /* Table record variable */ | |
| − | + | rc = dbdcache(100); | |
| − | + | errorproc("dbdcache()","table cache specified.", rc); | |
| − | + | rc = dbicache(100); | |
| − | + | errorproc("dbicache()", "index cache specified.", rc); | |
| − | + | rc = dbfilemode(0,0); | |
| − | + | fieldcount = 6; | |
| − | + | rc = dbcreat("shipwreck.dbf", fieldcount, fields); | |
| − | + | errorproc("dbcreat()","database created.", rc); | |
| − | + | rc = dbopen("shipwreck.dbf", &dbf); | |
| − | + | errorproc("dbopen()","table opened.", rc); | |
| − | + | rc = dbxcreate( dbf, | |
fields[0].fieldnm, /* "VESSEL", */ | fields[0].fieldnm, /* "VESSEL", */ | ||
&dbx, | &dbx, | ||
| Line 89: | Line 89: | ||
0, | 0, | ||
0); | 0); | ||
| − | + | errorproc("dbxcreate()","tag created", rc); | |
| − | + | rc = dbxcreate( dbf, | |
fields[5].fieldnm, /* "FLAG", */ | fields[5].fieldnm, /* "FLAG", */ | ||
&dbx, | &dbx, | ||
| Line 98: | Line 98: | ||
0, | 0, | ||
0); | 0); | ||
| − | + | errorproc("dbxcreate()","tag created", rc); | |
| − | + | rc = dbxclose(dbx); | |
| − | + | errorproc("dbxclose()", "tagged index closed.", rc); | |
| − | + | rc = dbxopen(dbf, "shipwreck.dbx", &dbx); | |
| − | + | errorproc("dbxopen()","tagged index opened.", rc); | |
| − | + | rc = dbappend(dbf, text_table[0], &recno); | |
| − | + | errorproc("dbappend()", "record appended.", rc); | |
| − | + | rc = dbxakey(dbx, recno); | |
| − | + | errorproc("dbxakey()", "key added.", rc); | |
| − | + | rc = dbflush(dbf); | |
| − | + | errorproc("dbflush()", "table cache flushed.", rc); | |
| − | + | rc = dbxflsh(dbx); | |
| − | + | errorproc("dbxflsh()", "tagged index cache flushed.", rc); | |
| − | + | rc = dbxrmvkey(dbx, "Santa Margarita ", recno); | |
| − | + | errorproc("dbxrmvkey()", "key physically removed.", rc); | |
| − | + | rc = dbxakey(dbx, recno); | |
| − | + | errorproc("dbxakey()", "key added back in.", rc); | |
| − | + | rc = dbxupd(dbx, recno); | |
| − | + | errorproc("dbxupd()", "update key.", rc); | |
| − | + | rc = dbxclose(dbx); | |
| − | + | errorproc("dbxclose()", "tagged index closed.", rc); | |
| − | + | rc = dbclose(dbf); | |
| − | + | errorproc("dbclose()", "table closed.", rc); | |
| − | + | exit(0); | |
| − | } | + | } |
static void errorproc(func, str, rc) | static void errorproc(func, str, rc) | ||
| Line 136: | Line 136: | ||
char *str; | char *str; | ||
int rc; | int rc; | ||
| − | { | + | { |
| − | + | if ( rc != SUCCESS ) { | |
| − | + | printf("\n Error performing function %s -> %d\n", func, rc); | |
| − | + | exit(1); | |
} | } | ||
| − | printf("Function: t%s, t%s - | + | printf("Function: \t%s, \t%s - Ok\n", func, str); |
return; | return; | ||
} | } | ||
Latest revision as of 10:45, 6 May 2009
PURPOSE
update all tags in the tagged index file for the specified record
SYNOPSIS
#include "dbl.h" int dbxupd(dbx, recno) <input parameters> char *dbx; /* Tagged index file descriptor */ long recno; /* Record number to update tag from */ <output parameters> none
RETURN VALUE
The dbxupd() function returns 0 for success, or < 0 if an error occurs. See the section on return code values for a detailed list of return codes.
DESCRIPTION
The dbxupd() function will update all tags in the specified tagged index file, .DBX, for the given record number
EXAMPLE
The following example creates the shipwreck table and tags on the VESSEL and FLAG fields. It appends a record, adds the key, then removes and updates the key.
#include <stdio.h> #include "dbl.h" /* Recital/Library include file */ #include "dblproto.h" /* Recital/Library prototype file */ static dBFIELD fields[6] = { "VESSEL", 'C', 18, 0, 0, "LAT", 'N', 4, 1, 0, "LONG", 'N', 4, 1, 0, "AMOUNT", 'N', 10, 0, 0, "DATE", 'D', 8, 0, 0, "FLAG", 'C', 9, 0, 0 }; static void errorproc( char *func, char *str, int rc); static char *text_table[] = { "Santa Margarita 80.027.5 700000095/01/01Spanish " }; main() { int rc; /* Return Code for error handling */ char *dbf; /* File descriptor for table */ char *dbx; /* File descriptor for tagged index */ FLDNUM fieldcount; /* Number of fields to create */ int i; /* Loop control variable */ long recno; /* Table record variable */ rc = dbdcache(100); errorproc("dbdcache()","table cache specified.", rc); rc = dbicache(100); errorproc("dbicache()", "index cache specified.", rc); rc = dbfilemode(0,0); fieldcount = 6; rc = dbcreat("shipwreck.dbf", fieldcount, fields); errorproc("dbcreat()","database created.", rc); rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened.", rc); rc = dbxcreate( dbf, fields[0].fieldnm, /* "VESSEL", */ &dbx, fields[0].fieldnm, /* "VESSEL", */ NULL, 0, 0); errorproc("dbxcreate()","tag created", rc); rc = dbxcreate( dbf, fields[5].fieldnm, /* "FLAG", */ &dbx, fields[5].fieldnm, /* "FLAG", */ NULL, 0, 0); errorproc("dbxcreate()","tag created", rc); rc = dbxclose(dbx); errorproc("dbxclose()", "tagged index closed.", rc); rc = dbxopen(dbf, "shipwreck.dbx", &dbx); errorproc("dbxopen()","tagged index opened.", rc); rc = dbappend(dbf, text_table[0], &recno); errorproc("dbappend()", "record appended.", rc); rc = dbxakey(dbx, recno); errorproc("dbxakey()", "key added.", rc); rc = dbflush(dbf); errorproc("dbflush()", "table cache flushed.", rc); rc = dbxflsh(dbx); errorproc("dbxflsh()", "tagged index cache flushed.", rc); rc = dbxrmvkey(dbx, "Santa Margarita ", recno); errorproc("dbxrmvkey()", "key physically removed.", rc); rc = dbxakey(dbx, recno); errorproc("dbxakey()", "key added back in.", rc); rc = dbxupd(dbx, recno); errorproc("dbxupd()", "update key.", rc); rc = dbxclose(dbx); errorproc("dbxclose()", "tagged index closed.", rc); rc = dbclose(dbf); errorproc("dbclose()", "table closed.", rc); exit(0); } static void errorproc(func, str, rc) char *func; char *str; int rc; { if ( rc != SUCCESS ) { printf("\n Error performing function %s -> %d\n", func, rc); exit(1); } printf("Function: \t%s, \t%s - Ok\n", func, str); return; }
