Difference between revisions of "Dbxunlocki()"
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<input parameters> | <input parameters> | ||
| − | char *dbx; /* Tagged index file descriptor */ | + | char *dbx; /* Tagged index file descriptor */ |
<output parameters> | <output parameters> | ||
| Line 19: | Line 19: | ||
==RETURN VALUE== | ==RETURN VALUE== | ||
| − | The dbxunlocki() 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 dbxunlocki() 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 34: | Line 34: | ||
<code lang="c"> | <code lang="c"> | ||
#include <stdio.h> | #include <stdio.h> | ||
| − | #include "dbl.h" | + | #include "dbl.h" /* Recital/Library include file */ |
| − | #include "dblproto.h" /* Recital/Library prototype file */ | + | #include "dblproto.h" /* Recital/Library prototype file */ |
static dBFIELD fields[6] = { | static dBFIELD fields[6] = { | ||
| Line 64: | Line 64: | ||
main() | main() | ||
{ | { | ||
| − | + | int rc; /* Return Code for error handling */ | |
| − | + | char *dbf; /* File descriptor for table */ | |
| − | + | char *dbx; /* File descriptor for tagged index */ | |
| − | + | 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(1,0); | |
| − | + | rc = dbopen("shipwreck.dbf", &dbf); | |
| − | + | errorproc("dbopen()","table opened in shared mode.", rc); | |
| − | + | rc = dbxopen(dbf, "shipwreck.dbx", &dbx); | |
| − | + | errorproc("dbxopen()","tagged index opened.", rc); | |
| − | + | for( i = 1; i <= 7; i++) { | |
| − | + | rc = dbappend(dbf, text_table[i], &recno); | |
| − | + | errorproc("dbappend()", "record appended.", rc); | |
| − | + | rc = dbxlocki(dbx); | |
| − | + | errorproc("dbxlocki()", "tagged index file locked.", rc); | |
| − | + | rc = dbxakey(dbx, recno); | |
| − | + | errorproc("dbxakey()", "key added.", rc); | |
| − | + | rc = dbxunlocki(dbx); | |
| − | + | errorproc("dbxunlocki()", "tagged index file unlocked.", rc); | |
| − | + | } | |
| − | + | rc = dbflush(dbf); | |
| − | + | errorproc("dbflush()", "table cache flushed.", rc); | |
| − | + | rc = dbxflsh(dbx); | |
| − | + | errorproc("dbxflsh()", "Tagged index cache flushed.", 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 109: | Line 109: | ||
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 10:42, 6 May 2009
PURPOSE
unlock tagged index file
SYNOPSIS
#include "dbl.h" int dbxunlocki(dbx) <input parameters> char *dbx; /* Tagged index file descriptor */ <output parameters> none
RETURN VALUE
The dbxunlocki() 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 dbxunlocki() function unlocks the specified tagged index file, .DBX.
EXAMPLE
The following example opens the table and tag index, locks the table and tag index, adds in records, flushes the buffers, then unlocks and closes the files.
#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 ", "Santa Rosa 81.824.8 3000000032/01/01Spanish ", "Unknown galleon 83.123.0 015/01/01Spanish ", "Jessie 97.127.4 10000075/01/01U.S. ", "Lea 96.227.8 100000080/01/01U.S. ", "S.J. Lee 96.926.9 20000075/01/01U.S. ", "Genovase 78.418.4 185000030/01/01Spanish ", "Unknown Vessel 77.517.9 075/01/01U.S. " }; main() { int rc; /* Return Code for error handling */ char *dbf; /* File descriptor for table */ char *dbx; /* File descriptor for tagged index */ 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(1,0); rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened in shared mode.", rc); rc = dbxopen(dbf, "shipwreck.dbx", &dbx); errorproc("dbxopen()","tagged index opened.", rc); for( i = 1; i <= 7; i++) { rc = dbappend(dbf, text_table[i], &recno); errorproc("dbappend()", "record appended.", rc); rc = dbxlocki(dbx); errorproc("dbxlocki()", "tagged index file locked.", rc); rc = dbxakey(dbx, recno); errorproc("dbxakey()", "key added.", rc); rc = dbxunlocki(dbx); errorproc("dbxunlocki()", "tagged index file unlocked.", rc); } rc = dbflush(dbf); errorproc("dbflush()", "table cache flushed.", rc); rc = dbxflsh(dbx); errorproc("dbxflsh()", "Tagged index cache flushed.", 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; }
SEE ALSO
dbappend(), dbxakey(), dbxclose(), dbxflsh(), dbxlocki(), dbxopen()
