Difference between revisions of "Library dblsamp"
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− | + | /*#============================================================================ | |
− | + | *# Copyright (C) 1988-1991 Recital Corporation Inc. | |
− | + | *# As an unpublished licenced proprietary work. | |
− | /*#================================================== | + | |
− | *# Copyright (C) 1988- | + | |
− | *# As an unpublished | + | |
*# All rights reserved worldwide. | *# All rights reserved worldwide. | ||
*# | *# | ||
Line 11: | Line 8: | ||
*# copyright notice is included. | *# copyright notice is included. | ||
*# | *# | ||
− | #=================================================== | + | *#============================================================================ |
* | * | ||
− | *MODULE : dblsamp.c | + | * MODULE : dblsamp.c |
* | * | ||
− | *PURPOSE : Recital | + | * PURPOSE : Recital DataBase Library sample program. |
* | * | ||
− | *AUTHOR : RECITAL CORPORATION | + | * AUTHOR : RECITAL CORPORATION |
− | * | + | * |
− | *==================================================*/ | + | * DATE : 26 Jan 91 |
+ | * REVISION : 29 Oct 91 | ||
+ | * REVISION : 09 May 95 | ||
+ | * | ||
+ | *==========================================================================*/ | ||
#include <stdio.h> | #include <stdio.h> | ||
Line 26: | Line 27: | ||
#include <sys/types.h> | #include <sys/types.h> | ||
#include <unistd.h> | #include <unistd.h> | ||
− | #include "dbl.h" | + | #include "dbl.h" /* Recital/Library include file */ |
− | #include "dblproto.h" | + | #include "dblproto.h" /* Recital/Library prototype file */ |
+ | |||
− | extern int | + | extern int g_disable_iostats; |
− | /* | + | /*----------------------------------------------*/ |
/* Table structure for db to be constructed. */ | /* Table structure for db to be constructed. */ | ||
− | /* Structure dBFIELD defined in dbl.h */ | + | /* Structure dBFIELD defined in dbl.h. */ |
− | /* | + | /*----------------------------------------------*/ |
− | static dBFIELD fields[7] = { | + | static dBFIELD fields[7] = { |
− | + | "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, | |
− | + | "MEMO", 'M', sizeof(MEMO), 0, 0 | |
}; | }; | ||
#define DB_RECORD_SIZE 100 | #define DB_RECORD_SIZE 100 | ||
− | /*-----------------------------------------------------------------------------------------*/ | + | /*----------------------------------------------*/ |
− | + | /* Static Error Handling procedure. */ | |
− | /*-----------------------------------------------------------------------------------------*/ | + | /*----------------------------------------------*/ |
− | static | + | static void errorproc( |
+ | char *func, | ||
+ | char *str, | ||
+ | int rc); | ||
+ | |||
+ | /*----------------------------------------------*/ | ||
+ | /* Table records to add. */ | ||
+ | /*----------------------------------------------*/ | ||
+ | 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 program entry point. */ | /* Main program entry point. */ | ||
− | /* | + | /*---------------------------*/ |
− | main() | + | main() |
{ | { | ||
− | + | int rc; /* Return Code for error handling */ | |
− | + | char *dbf; /* File descriptor for table */ | |
− | + | char *dbx; /* File descriptor for tagged index */ | |
− | + | char *ndx; /* File descriptor for index */ | |
− | + | char *dbt; /* File descriptor for memo file */ | |
− | + | char record[DB_RECORD_SIZE]; /* Array of char for records */ | |
− | + | char keytype; /* Variable for varying keytype */ | |
− | + | char key[21]; /* Storage location for keys */ | |
− | + | char tagname[21]; /* Storage location for tag name */ | |
− | + | char keyexpr[512]; /* Storage location for key expr */ | |
− | + | char forexpr[512]; /* Storage location for for expr */ | |
− | + | int kexprlen; /* The key expression length */ | |
− | + | int keylen; /* The key length */ | |
− | + | dBFIELD dbfields[MAX_RECORD_FIELDS]; /* Storage location for fld names */ | |
− | + | FLDNUM fieldcount; /* Number of fields to create */ | |
− | + | int fldpos[MAX_RECORD_FIELDS]; /* Fields position buffer */ | |
− | + | char flddes[MAX_RECORD_FIELDS][26]; /* Fields description buffer */ | |
− | + | char tmpbuf[81]; /* Temporary storage buffer */ | |
− | + | char fldbuf[MAX_RECORD_FIELDS][256]; /* Field buffer (recin()/out()) */ | |
− | + | char nextkey[10][20]; /* Key buffers (dbnkey()) */ | |
− | + | char status; /* Deleted record flag */ | |
− | + | long recno; /* Table record variable */ | |
− | + | long rec_no[10]; /* Record number array (dbnkey()) */ | |
− | + | long db_size; /* Size of table variable */ | |
− | + | int reclen; /* Table record length variable */ | |
− | + | char month; /* Month variable */ | |
− | + | char day; /* Day variable */ | |
− | + | char year; /* Year variable */ | |
− | + | FLDNUM nofields; /* Number of table fields var */ | |
− | + | int i; /* Loop control variable */ | |
− | + | double n; /* Double numeric variable */ | |
− | int | + | int keyunique; /* Boolean for unqiue tag key */ |
− | int | + | int keydescend; /* Boolean for descending tag key */ |
− | int | + | int notags; /* number of tags in a dbx file */ |
− | |||
− | |||
− | |||
− | + | /*----------------------------------------------------*/ | |
− | + | /* Perform operational Library environment functions. */ | |
− | + | /*----------------------------------------------------*/ | |
− | + | ||
− | + | ||
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | /* DBDCACHE() - this example allocates a 100 record caching area */ | |
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | rc = dbdcache(100); | |
− | + | errorproc("dbdcache()","table cache specified.", rc); | |
− | /* | + | /*-------------------------------------------------------------------*/ |
− | + | /* DBICACHE() - this example allocates 51200 bytes for index caching */ | |
− | /* | + | /*-------------------------------------------------------------------*/ |
− | + | rc = dbicache(100); | |
− | + | errorproc("dbicache()", "index cache specified.",rc); | |
− | /* | + | /*------------------------------------------*/ |
− | + | /* DBFILEMODE() - shared, read write access */ | |
− | /* | + | /*------------------------------------------*/ |
− | + | rc = dbfilemode(1,0); | |
− | + | errorproc("dbfilemode()", "filemode specified.", rc); | |
− | /* | + | /*------------------------------------------*/ |
− | + | /* DBSET() - Set exact index match to true */ | |
− | /* | + | /*------------------------------------------*/ |
− | + | rc = dbset("EXACT", 1); | |
+ | errorproc("dbset()", "filemode specified.", rc); | ||
− | + | /*--------------------------------*/ | |
− | + | /* Perform basic table functions. */ | |
− | + | /*--------------------------------*/ | |
− | + | fieldcount = 7; /* Number of Fields */ | |
− | + | ||
− | + | ||
− | /* | + | /*-----------------------------------------------------------*/ |
− | + | /* DBCREAT() - this example creates a table according to the */ | |
− | /* | + | /* 'dBFIELD' array fields. */ |
− | + | /*-----------------------------------------------------------*/ | |
− | + | rc = dbcreat("shipwreck.dbf",fieldcount, fields); | |
− | + | errorproc("dbcreat()","datebase created.", rc); | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | /*----------------------------------------------------------------*/ | |
+ | /* DBCREATX() - Enables the addition of table field descriptions. */ | ||
+ | /*----------------------------------------------------------------*/ | ||
+ | strcpy(flddes[0], "The vessel's name."); | ||
+ | strcpy(flddes[1], "The latitude."); | ||
+ | strcpy(flddes[2], "The longitude."); | ||
+ | strcpy(flddes[3], "The value."); | ||
+ | strcpy(flddes[4], "The date."); | ||
+ | strcpy(flddes[5], "The vessel's flag."); | ||
+ | strcpy(flddes[6], "Notes."); | ||
− | + | rc = dbcreatx("shipwreck.dbf", fieldcount, fields, flddes); | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | /* DBOPEN() - example opens table 'shipwreck.dbf' returning the */ | |
− | + | /* table file descriptor (dbf) used in upcoming funcs */ | |
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | rc = dbopen("shipwreck.dbf", &dbf); | |
− | + | errorproc("dbopen()","table opened.", rc); | |
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBGETF() - obtain table information on the table referenced */ | |
− | + | /* by the 'dbf' file descriptor. */ | |
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | rc = dbgetf(dbf, &reclen, &month, &day, | |
− | + | &year, &nofields, dbfields); | |
− | + | errorproc("dbgetf()","information retrieved.", rc); | |
− | + | printf("\t\tRecord length in bytes: %d\n", reclen); | |
− | + | printf("\t\tCreation date: \t\t%d/%d/%d\n",month,day,year); | |
+ | printf("\t\tNumber of fields: \t%d\n", nofields); | ||
− | /*---------------------------------------------------------------------------------------*/ | + | |
− | + | /*-----------------------------------------------------------------*/ | |
− | + | /* DBGETFX() - obtain extended table information including the */ | |
− | /*---------------------------------------------------------------------------------------*/ | + | /* numeric field location array (fldpos) and the field */ |
− | + | /* descriptions (flddes). */ | |
− | + | /*-----------------------------------------------------------------*/ | |
− | + | rc = dbgetfx(dbf, &reclen, &month, &day, &year, | |
− | + | &nofields, dbfields, fldpos, flddes); | |
− | + | errorproc("dbgetfx()", "extra information retrieved.", rc); | |
+ | printf("\t\tLocation of fields in buffer: \t%d,%d,%d,%d,%d,%d\n", | ||
+ | fldpos[1],fldpos[2],fldpos[3],fldpos[4],fldpos[5],fldpos[6]); | ||
+ | |||
+ | /*-------------------------------------------------------------*/ | ||
+ | /* DBLOCKF() - locks the table for following additions. */ | ||
+ | /* Synonomous with DBTLOCKF() which tests the lock */ | ||
+ | /*-------------------------------------------------------------*/ | ||
+ | rc = dblockf(dbf); | ||
+ | if ( rc == SUCCESS ) { | ||
+ | printf("Function: \tdblockf() \tfile locked successfully.\n"); | ||
+ | } else { | ||
+ | printf("Lock Failed. \tError: %d\n",rc); | ||
} | } | ||
− | /* | + | /*------------------------------------*/ |
− | + | /* DBCLOSE() - close the active table */ | |
− | /* | + | /*------------------------------------*/ |
rc = dbclose(dbf); | rc = dbclose(dbf); | ||
− | + | errorproc("dbclose()", "table closed.", rc); | |
− | /* | + | /*----------------------------------------------*/ |
− | + | /* Exclusive, read write access of the table is */ | |
− | /* tags. */ | + | /* required to create or delete tags. */ |
− | /* | + | /*----------------------------------------------*/ |
− | + | rc = dbfilemode(0,0); | |
− | + | rc = dbopen("shipwreck.dbf", &dbf); | |
− | + | errorproc("dbopen()","table opened in exclusive mode.", rc); | |
− | + | /*---------------------------------------*/ | |
− | + | /* Perform basic tagged index functions. */ | |
− | + | /*---------------------------------------*/ | |
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | /* | + | /*--------------------------------------------------------------*/ |
− | + | /* DBXCREATE() - in this example creates an tag on field VESSEL */ | |
− | /* | + | /*--------------------------------------------------------------*/ |
− | + | rc = dbxcreate( dbf, | |
− | + | fields[0].fieldnm, /* "VESSEL", */ | |
− | + | &dbx, | |
− | + | fields[0].fieldnm, /* "VESSEL", */ | |
− | + | NULL, | |
− | + | 0, | |
− | + | 0); | |
− | + | errorproc("dbxcreate()","tag created", rc); | |
− | /* | + | /*------------------------------------------------------------*/ |
− | + | /* DBXCREATE() - in this example creates an tag on field FLAG */ | |
− | /* | + | /*------------------------------------------------------------*/ |
− | + | rc = dbxcreate( dbf, | |
− | + | fields[5].fieldnm, /* "FLAG", */ | |
− | + | &dbx, | |
+ | fields[5].fieldnm, /* "FLAG", */ | ||
+ | NULL, | ||
+ | 0, | ||
+ | 0); | ||
+ | errorproc("dbxcreate()","tag created", rc); | ||
− | /*---------------------------------------------------------------------------------------*/ | + | /*----------------------------------------------------*/ |
− | + | /* DBXNOTAGS() - obtains the number of tagged indexes */ | |
− | /*---------------------------------------------------------------------------------------*/ | + | /*----------------------------------------------------*/ |
+ | rc = dbxnotags(dbx, ¬ags); | ||
+ | errorproc("dbxnotags()","tagged index count obtained.", rc); | ||
+ | printf("\t Key count: \t%d\n", notags ); | ||
+ | |||
+ | /*-----------------------------------------------*/ | ||
+ | /* DBXKEXPR() - obtains tagged index information */ | ||
+ | /*-----------------------------------------------*/ | ||
for (i = 1; i <= notags; i++) { | for (i = 1; i <= notags; i++) { | ||
− | + | rc = dbxkexpr(dbx, | |
− | + | &i, | |
− | + | tagname, | |
− | + | &keytype, | |
− | + | keyexpr, | |
− | + | forexpr, | |
− | + | &kexprlen, | |
− | + | &keylen, | |
− | + | &keyunique, | |
− | + | &keydescend); | |
− | + | errorproc("dbxkexpr()", "key information retrieved.", rc); | |
− | + | printf("\t Key number: \t%d\n", i ); | |
− | + | printf("\t Key name: \t%s\n", tagname ); | |
− | + | printf("\t Key type: \t%c\n", keytype ); | |
− | + | printf("\t Key expression: %s\n", keyexpr); | |
− | + | printf("\t Key length: %d Expression length: %d\n", | |
− | + | kexprlen, keylen); | |
− | + | printf("\t For expression: %s\n", forexpr); | |
− | + | printf("\t Key unique: \t%s\n", keyunique ? "Yes" : "No" ); | |
+ | printf("\t Key descending: \t%s\n", keydescend?"Yes":"No" ); | ||
} | } | ||
− | /* | + | /*----------------------------------------*/ |
− | + | /* DBXDROPTAGS() - Drop the specified tag */ | |
− | /* | + | /*----------------------------------------*/ |
− | + | rc = dbxdroptag(dbx, fields[5].fieldnm); | |
− | + | errorproc("dbxdroptag()","tagged index 'FLAG' dropped.", rc); | |
− | /* | + | /*--------------------------------------------*/ |
− | + | /* DBXCLOSE() - close the active tagged index */ | |
− | /* | + | /*--------------------------------------------*/ |
− | + | rc = dbxclose(dbx); | |
− | + | errorproc("dbxclose()", "tagged index closed.", rc); | |
− | /* | + | /*------------------------------------*/ |
− | + | /* DBCLOSE() - close the active table */ | |
− | /* | + | /*------------------------------------*/ |
− | + | rc = dbclose(dbf); | |
− | + | errorproc("dbclose()", "table closed.", rc); | |
− | /* | + | /*----------------------------------------------------*/ |
− | + | /* Reopen the table in shared, read-write access mode */ | |
− | /* | + | /*----------------------------------------------------*/ |
− | + | rc = dbfilemode(1,0); | |
− | + | rc = dbopen("shipwreck.dbf", &dbf); | |
− | + | errorproc("dbopen()","table opened in shared mode.", rc); | |
− | /* | + | /*--------------------------------------------------------------------*/ |
− | + | /* DBXOPEN() - example opens tag index 'shipwreck.dbx' returning the */ | |
− | + | /* taged index file descriptor (dbx) used in upcoming funcs */ | |
− | /* | + | /*--------------------------------------------------------------------*/ |
− | + | rc = dbxopen(dbf, "shipwreck.dbx", &dbx); | |
− | + | errorproc("dbxopen()","tagged index opened.", rc); | |
− | + | /*--------------------------------*/ | |
− | + | /* Perform basic index functions. */ | |
− | + | /*--------------------------------*/ | |
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | /* DBICREAT() - in this example creates an index on field VESSEL */ | |
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | rc = dbicreat( "shipwreck.ndx", fields[0].fieldnm, 18, 'C'); | |
− | + | errorproc("dbicreat()","index created", rc); | |
− | /* | + | /*------------------------------------------*/ |
− | + | /* DBIOPEN() - opens index to active status */ | |
− | /* | + | /*------------------------------------------*/ |
− | + | rc = dbiopen( "shipwreck.ndx", &ndx); | |
− | + | errorproc("dbiopen()", "index opened.", rc); | |
− | /* | + | /*---------------------------------------*/ |
− | + | /* DBKEXPR() - obtains index information */ | |
− | /* | + | /*---------------------------------------*/ |
− | + | rc = dbkexpr(ndx, &keytype, keyexpr, &kexprlen, &keylen); | |
− | + | errorproc("dbkexpr()", "key information retrieved.", rc); | |
− | + | printf("\t Key type: \t%c\n", keytype ); | |
− | + | printf("\t Key expression: %s\n", keyexpr); | |
− | + | printf("\t Key length: %d Expression length: %d\n", | |
+ | kexprlen, keylen); | ||
− | /* | + | /*----------------*/ |
/* Lock data file */ | /* Lock data file */ | ||
− | /* | + | /*----------------*/ |
rc = dblockf(dbf); | rc = dblockf(dbf); | ||
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function: \tdblockf() \tfile locked successfully.\n"); | |
− | + | } else { | |
− | + | printf("Lock Failed. \tError: %d\n",rc); | |
} | } | ||
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBLOCKI() - locks the index for following additions */ | |
− | + | /* Synonomous with DBTLOCKI() which tests the lock */ | |
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | rc = dblocki(ndx); | |
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function: \tdblocki() \tindex locked successfully.\n"); | |
− | + | } else { | |
− | + | printf("Lock Failed. \tError: %d\n",rc); | |
} | } | ||
− | + | /*------------------------------------*/ | |
− | + | /* Perform basic memo file functions. */ | |
− | + | /*------------------------------------*/ | |
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | /* DBMCREAT() - creates a table memo file (if one needs creating) */ | |
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | rc = dbmcreat("shipwreck.dbt"); | |
− | + | errorproc("dbmcreat()", "memo file create", rc); | |
− | /* | + | /*-------------------------------------------*/ |
− | + | /* DBMOPEN() - opens an associated memo file */ | |
− | /* | + | /*-------------------------------------------*/ |
− | + | rc = dbmopen("shipwreck.dbt", &dbt); | |
− | + | errorproc("dbmopen()", "memo file open.", rc); | |
− | |||
− | |||
− | |||
− | + | /*--------------------------------*/ | |
− | + | /* Perform table input functions. */ | |
− | + | /*--------------------------------*/ | |
− | + | ||
− | + | ||
− | /* | + | /*--------------------------------------------------------------*/ |
− | + | /* DBAPPEND() - appends a record to the end of the active table */ | |
− | /* | + | /*--------------------------------------------------------------*/ |
− | + | rc = dbappend(dbf, text_table[0], &recno); | |
− | + | errorproc("dbappend()", "record appended.", rc); | |
− | /* | + | /*------------------------------------------------------------*/ |
− | + | /* DBAKEY() - adds a key to the active index after dbappend() */ | |
− | + | /*------------------------------------------------------------*/ | |
− | /* | + | rc = dbakey(ndx,"Santa Margarita " , recno); |
− | + | errorproc("dbakey()", "key added.", rc); | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBXAKEY() - adds a key to the tagged index after dbappend() */ | |
− | /* | + | /* The tagged index file must be lock first */ |
− | + | /*-------------------------------------------------------------*/ | |
− | + | 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); | ||
− | /* | + | /*----------------------------------------------*/ |
− | + | /* DBFLUSH() - flushes the record cache to disk */ | |
− | /* | + | /*----------------------------------------------*/ |
− | + | rc = dbflush(dbf); | |
− | + | errorproc("dbflush()", "table cache flushed.", rc); | |
− | /* | + | /*---------------------------------------------*/ |
− | + | /* DBIFLSH() - flushes the index cache to disk */ | |
− | /* | + | /*---------------------------------------------*/ |
− | + | rc = dbiflsh(ndx); | |
− | + | errorproc("dbiflsh()", "index cache flushed.", rc); | |
− | /* | + | /*----------------------------------------------------*/ |
− | + | /* DBXFLSH() - flushes the tagged index cache to disk */ | |
− | /* | + | /*----------------------------------------------------*/ |
− | + | rc = dbxflsh(dbx); | |
− | + | errorproc("dbxflsh()", "Tagged index cache flushed.", rc); | |
− | + | ||
− | /* | + | /*-------------------------------*/ |
− | + | /* DBGETR() - retrieves a record */ | |
− | /* | + | /*-------------------------------*/ |
− | + | rc = dbgetr(dbf, (long)1, record, &status); | |
− | + | errorproc("dbgetr()", "record retreived.", rc); | |
+ | printf("\t\t%s\n", record); | ||
− | /* | + | /*-------------------------------------*/ |
− | + | /* DBPUTM() - put the memo information */ | |
− | + | /*-------------------------------------*/ | |
− | /* | + | rc = dbputm(dbt, "128' 30% coral cover.", &record[53]); |
− | + | errorproc("dbputm", "memo placed in buffer",rc); | |
− | + | ||
− | /* | + | /*-----------------------------------------------------------*/ |
− | + | /* DBUPDR() - updates the record in buffer 'record' */ | |
− | /* | + | /* As of v8.0 this function automatically updates */ |
− | + | /* any attached indexes. */ | |
− | + | /*-----------------------------------------------------------*/ | |
+ | rc = dbupdr(dbf, (long)1, record); | ||
+ | errorproc("dbupdr()", "record updated.", rc); | ||
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | /* DBGETM() - this example extracts the memo from the record buffer */ | |
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | rc = dbgetm(dbt, &record[53], tmpbuf, 0); | |
− | + | errorproc("dbgetm()", "retreived memo.", rc); | |
− | + | ||
− | /* | + | /*--------------------------------------------------*/ |
− | + | /* DBUPDM() - Updates the memofield for this record */ | |
− | /* | + | /*--------------------------------------------------*/ |
− | + | strcat(tmpbuf, " Appending this string to the end of memo..."); | |
− | + | rc = dbupdm(dbt, tmpbuf, &record[53], &record[53]); | |
− | + | errorproc("dbupdm()", "updated memo.", rc); | |
− | |||
− | |||
− | |||
− | + | /*--------------------------------------------------------------*/ | |
− | + | /* DBPUTRK() - the following example adds a record and index */ | |
− | + | /* to the respective files. */ | |
− | + | /* DBRECOUT() - scatter the record stored in buffer 'record' to */ | |
− | + | /* two dimensional character array 'fldbuf' */ | |
− | + | /*--------------------------------------------------------------*/ | |
− | /* | + | /*------------------------*/ |
− | + | /* Read in 6 more records */ | |
− | /* | + | /*------------------------*/ |
− | + | ||
− | + | ||
− | + | for( i = 1; i <= 6; i++) { | |
− | + | dbrecout( dbf, dbfields, fldpos, text_table[i], fldbuf); | |
− | + | rc = dbputrk(dbf, ndx, fldbuf[0], text_table[i]); | |
− | + | errorproc("dbputrk()", "record placed by key.", rc); | |
− | + | } | |
+ | errorproc("dbputrk()", "6 records placed by key.", rc); | ||
− | /* | + | /*----------------------------------------------*/ |
− | + | /* DBFLUSH() - flushes the record cache to disk */ | |
− | /* | + | /*----------------------------------------------*/ |
− | + | rc = dbflush(dbf); | |
− | + | errorproc("dbflush()", "table cache flushed.", rc); | |
− | /* | + | /*---------------------------------------------*/ |
− | + | /* DBIFLSH() - flushes the index cache to disk */ | |
− | + | /*---------------------------------------------*/ | |
− | /* | + | rc = dbiflsh(ndx); |
− | + | errorproc("dbiflsh()", "index cache flushed.", rc); | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*----------------------------------------------------*/ |
− | + | /* DBXFLSH() - flushes the tagged index cache to disk */ | |
− | /* | + | /*----------------------------------------------------*/ |
+ | rc = dbxflsh(dbx); | ||
+ | errorproc("dbxflsh()", "Tagged index cache flushed.", rc); | ||
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | /* DBFIELD() - this example extracts the field 'VESSEL' from the */ | |
− | /* | + | /* record (#5) stored in buffer 'record' */ |
− | + | /*---------------------------------------------------------------*/ | |
− | + | rc = dbgetr(dbf, (long)5, record, &status); | |
+ | /* rc = dbfield( dbf, record, "FLAG", tmpbuf); */ | ||
+ | rc = dbfield( dbf, record, fields[5].fieldnm, tmpbuf); | ||
+ | errorproc("dbfield()", "field extracted.", rc); | ||
+ | printf("\t\tFlag: \t%s\n", tmpbuf); | ||
− | + | /*------------------------------------------*/ | |
− | + | /* Modify a single field in record number 5 */ | |
− | + | /*------------------------------------------*/ | |
− | + | ||
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | /* DBSCATTER() - scatters the record into specified field buffers.*/ | |
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | rc = dbscatter(dbf, record, fldbuf); | |
− | + | errorproc("dbscatter()", "record scattered.", rc); | |
− | + | ||
− | + | strcpy(fldbuf[6], "Spanish"); /* Modify Field */ | |
− | + | ||
− | /* | + | /*----------------------------------------------------------------*/ |
− | + | /* DBGATHER() - Gathers the field buffers and places the contents */ | |
− | /* | + | /*----------------------------------------------------------------*/ |
+ | rc = dbgather(dbf, record, fldbuf); | ||
+ | errorproc("dbgather()", "record gathered.", rc); | ||
+ | printf("\t\t%s\n", record); | ||
− | + | rc = dbupdr(dbf, (long)5, record); /* Finish Example */ | |
− | + | errorproc("dbupdr()", "record updated.", rc); | |
− | + | ||
− | + | ||
− | + | ||
− | + | /*---------------------------------------------*/ | |
− | + | /* Perform index / index conversion functions. */ | |
− | + | /*---------------------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBREWIND() - positions the record pointer to the top of the */ | |
− | /* | + | /* index file */ |
− | + | /*-------------------------------------------------------------*/ | |
− | + | rc = dbrewind(ndx); | |
− | + | errorproc("dbrewind()", "index rewound.", rc); | |
− | /* | + | /*----------------------------------------------------------*/ |
− | + | /* DBGETNR() - after 'rewind()ing' to the top of the table */ | |
− | /* | + | /* the first record using the active key can be */ |
− | + | /* retrieved with dbgetnr() */ | |
− | + | /*----------------------------------------------------------*/ | |
+ | for( i = 1; i <= 6; i++) { | ||
+ | rc = dbgetnr(dbf, ndx, record, &status); | ||
+ | printf("\t\t%d: %s\n", i,record); | ||
+ | } | ||
+ | errorproc("dbgetnr()", "6 records retrieved by key.", rc); | ||
− | /* | + | /*-------------------------*/ |
− | + | /* DBNKEY() - get next key */ | |
− | /* | + | /*-------------------------*/ |
− | + | rc = dbnkey(ndx, nextkey[0], rec_no); | |
− | + | errorproc("dbnkey()", "next key retrieved.", rc); | |
− | + | printf("\t\tnext key: \t%s\n", nextkey[0]); | |
− | /* | + | /*--------------------------------------------------------*/ |
− | + | /* DBFWD() - position the pointer to the end of the table */ | |
− | /* | + | /*--------------------------------------------------------*/ |
− | + | rc = dbfwd(ndx); | |
− | + | errorproc("dbfwd()", "index pointer placed at bottom.", rc); | |
− | + | ||
− | /* | + | /*-----------------------------*/ |
− | + | /* DBPKEY() - get previous key */ | |
− | /* | + | /*-----------------------------*/ |
− | + | rc = dbpkey(ndx, nextkey[0], rec_no); | |
+ | errorproc("dbpkey()", "previous key found.", rc); | ||
+ | printf("\t\tprev key: \t%s\n", nextkey[0]); | ||
− | /* | + | /*-----------------------------------------------*/ |
− | + | /* DBGETPR() - obtain the previous record by key */ | |
− | /* | + | /*-----------------------------------------------*/ |
+ | rc = dbgetpr(dbf, ndx, record, &status); | ||
+ | errorproc("dbgetpr()", "previous record (by key) retrieved.", rc); | ||
+ | printf("Previous: \t%s\n", record); | ||
− | /* | + | /*------------------*/ |
− | + | /* Rewind the index */ | |
− | /* | + | /*------------------*/ |
− | + | dbrewind(ndx); | |
− | + | ||
− | + | ||
− | + | /*--------------------------------------------------*/ | |
− | + | /* Perform table retrieval functions using indexes. */ | |
− | + | /*--------------------------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-----------------------------------------------------*/ |
− | + | /* DBTKEY() - translates supplied key to record number */ | |
− | /* | + | /*-----------------------------------------------------*/ |
− | + | rc = dbtkey(ndx, "Santa Rosa ", &recno); | |
− | + | errorproc("dbtkey()", "record number found by key.", rc); | |
− | + | printf("\t\trecord number: \t%d\n", recno); | |
− | /* | + | /*-------------------------------------------------------*/ |
− | + | /* DBGETRK() - obtains the record from the specified key */ | |
− | /* | + | /*-------------------------------------------------------*/ |
+ | rc = dbgetrk(dbf, ndx, "Santa Rosa ", record, &status); | ||
+ | errorproc("dbgetrk()", "record retrieved by key.", rc); | ||
+ | printf("\t\t%s\n", record); | ||
− | /* | + | /*---------------------------------*/ |
− | + | /* DBCKEY() - read the current key */ | |
− | /* | + | /*---------------------------------*/ |
− | + | rc = dbckey(ndx, key, &recno); | |
− | + | errorproc("dbckey()", "current key read.", rc); | |
+ | printf("\t\tcurrent key: \t%s\n", key); | ||
− | + | /*---------------------------------*/ | |
− | + | /* Perform tagged index functions. */ | |
− | + | /*---------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*--------------------------------------------------------------*/ |
− | + | /* DBXREWIND() - positions the record pointer to the top of the */ | |
− | /* | + | /* index file */ |
− | + | /*--------------------------------------------------------------*/ | |
− | + | rc = dbxrewind(dbx); | |
− | + | errorproc("dbxrewind()", "Tagged index rewound.", rc); | |
− | /* | + | /*-----------------------------------------------------------*/ |
− | + | /* DBXGETNR() - after 'rewind()ing' to the top of the table */ | |
− | /* | + | /* the first record using the active key can be */ |
− | + | /* retrieved with dbgetnr() */ | |
− | + | /*-----------------------------------------------------------*/ | |
+ | for( i = 1; i <= 6; i++) { | ||
+ | rc = dbxgetnr(dbf, dbx, record, &status); | ||
+ | printf("\t\t%d: %s\n", i,record); | ||
+ | } | ||
+ | errorproc("dbxgetnr()", "6 records retrieved by tag key.", rc); | ||
− | /* | + | /*--------------------------*/ |
− | + | /* DBXNKEY() - get next key */ | |
− | /* | + | /*--------------------------*/ |
− | + | rc = dbxnkey(dbx, nextkey[0], rec_no); | |
− | + | errorproc("dbxnkey()", "next key retrieved in tagged index.", rc); | |
− | + | printf("\t\tnext key: \t%s\n", nextkey[0]); | |
− | /* | + | /*---------------------------------------------------------*/ |
− | + | /* DBXFWD() - position the pointer to the end of the table */ | |
− | /* | + | /*---------------------------------------------------------*/ |
− | + | rc = dbxfwd(dbx); | |
− | + | errorproc("dbxfwd()", "index pointer placed at bottom.", rc); | |
− | + | ||
− | /* | + | /*-----------------------------*/ |
− | + | /* DBXPKEY() - get previous key */ | |
− | /* | + | /*-----------------------------*/ |
− | + | rc = dbxpkey(dbx, nextkey[0], rec_no); | |
+ | errorproc("dbxpkey()", "previous key found in tagged index.", rc); | ||
+ | printf("\t\tprev key: \t%s\n", nextkey[0]); | ||
− | /* | + | /*------------------------------------------------*/ |
− | + | /* DBXGETPR() - obtain the previous record by key */ | |
− | /* | + | /*------------------------------------------------*/ |
+ | rc = dbxgetpr(dbf, dbx, record, &status); | ||
+ | errorproc("dbxgetpr()", "previous record (by key) retrieved.", rc); | ||
+ | printf("Previous: \t%s\n", record); | ||
− | /* | + | /*------------------*/ |
− | + | /* Rewind the index */ | |
− | /* | + | /*------------------*/ |
− | + | dbxrewind(dbx); | |
− | + | ||
− | + | ||
− | + | /*---------------------------------------------------------*/ | |
− | + | /* Perform table retrieval functions using tagged indexes. */ | |
− | + | /*---------------------------------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-----------------------------------------------------*/ |
− | + | /* DBTKEY() - translates supplied key to record number */ | |
− | /* | + | /*-----------------------------------------------------*/ |
− | + | rc = dbtkey(ndx, "Santa Rosa ", &recno); | |
− | + | errorproc("dbtkey()", "record number found by key.", rc); | |
− | + | printf("\t\trecord number: \t%d\n", recno); | |
− | /* | + | /*--------------------------------------------------------*/ |
− | + | /* DBXGETRK() - obtains the record from the specified key */ | |
− | /* | + | /*--------------------------------------------------------*/ |
+ | rc = dbxgetrk(dbf, dbx, "Santa Rosa ", record, &status); | ||
+ | errorproc("dbxgetrk()", "record retrieved by key.", rc); | ||
+ | printf("\t\t%s\n", record); | ||
− | /* | + | /*---------------------------------*/ |
− | + | /* DBXCKEY() - read the current key */ | |
− | /* | + | /*---------------------------------*/ |
− | + | rc = dbxckey(dbx, key, &recno); | |
− | + | errorproc("dbxckey()", "current key read.", rc); | |
+ | printf("\t\tcurrent key: \t%s\n", key); | ||
− | + | /*---------------------------------------------------------------*/ | |
− | + | /* Perform field level functions including index/ASCII functions.*/ | |
− | + | /*---------------------------------------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBATOFLD() - converts ASCII string to Recital compat. field */ | |
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | rc = dbatofld("23.3", 4, 1, tmpbuf); | |
− | + | errorproc("dbatofld()", "string converted.", rc); | |
− | /* | + | /*----------------------------------------------------------*/ |
− | + | /* DBATOKEY() - converts a ASCII string to Recital date key */ | |
− | /* | + | /*-----------------------------------------------------------*/ |
− | + | key[0] = 'D'; | |
− | + | rc = dbatokey("16430411", key); | |
+ | errorproc("dbatokey()", "string converted to key.", rc); | ||
− | /* | + | /*------------------------------------------------*/ |
− | + | /* DBFLDTOA() - converts extracted field to ASCII */ | |
− | /* | + | /*------------------------------------------------*/ |
− | + | rc = dbfldtoa(record + 18, 4, tmpbuf); | |
− | + | errorproc("dbfldtoa()", "field converted.", rc); | |
− | /* | + | /*---------------------------------------------------------*/ |
− | + | /* DBSTRCPY() - formats character strings to Rectial types */ | |
− | /* | + | /*---------------------------------------------------------*/ |
− | + | dbstrcpy(key, 'L', 10, " 320000"); | |
− | + | printf("Function: \tdbstrcpy() \toutput: %s\n", key); | |
− | + | ||
− | + | ||
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | /* DBSTRING() - formats non-'C' strings to C strings (null term) */ | |
− | /* | + | /*---------------------------------------------------------------*/ |
+ | dbstring("Santa Pedro", 13, tmpbuf); | ||
+ | printf("Function: \tdbstring() \toutput: %s\n", tmpbuf); | ||
− | /* | + | /*-------------------------------------------------*/ |
− | + | /* DBKEYTOA() - converts an extracted key to ASCII */ | |
− | /* | + | /*-------------------------------------------------*/ |
− | rc = | + | tmpbuf[0] = 0; /* Number of dec. places */ |
− | + | tmpbuf[1] = 'N'; /* Key Type */ | |
− | + | rc = dbkeytoa(key, tmpbuf); | |
+ | errorproc("dbkeytoa()", "key converted.", rc); | ||
− | + | /*-----------------------------------------------*/ | |
− | + | /* Perform record/index deletion and file access */ | |
− | + | /*-----------------------------------------------*/ | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | + | /*-------------------------------------------*/ | |
− | dbiflsh(ndx); | + | /* DBSIZE() - retrieve the size of the table */ |
+ | /*-------------------------------------------*/ | ||
+ | rc = dbsize(dbf, &db_size); | ||
+ | errorproc("dbsize()", "size retrieved.", rc); | ||
+ | printf("\t No. of Records: \t%d\n", db_size); | ||
+ | |||
+ | /*---------------------------------------------------------------*/ | ||
+ | /* DBPUTR() - adds a record to the end of the table */ | ||
+ | /* You can also 'insert' a record using this function */ | ||
+ | /*---------------------------------------------------------------*/ | ||
+ | rc = dbputr(dbf, db_size + 1L, text_table[7]); | ||
+ | errorproc("dbputr()", "record placed.", rc); | ||
+ | rc = dbakey(ndx,"Unknown Vessel " , db_size + 1L); | ||
+ | errorproc("dbakey()", "key added.", rc); | ||
+ | rc = dbxakey(dbx, db_size + 1L); | ||
+ | errorproc("dbxakey()", "key added.", rc); | ||
+ | |||
+ | dbflush(dbf); /* Good Habit on shared files */ | ||
+ | dbiflsh(ndx); | ||
dbxflsh(dbx); | dbxflsh(dbx); | ||
− | /* | + | /*----------------------------------------------------*/ |
− | + | /* DBDELETE() - mark a record (number 8) for deletion */ | |
− | /* | + | /*----------------------------------------------------*/ |
− | + | rc = dbdelete(dbf, 8L); | |
− | + | errorproc("dbdelete()", "record 8 marked for deletion.", rc); | |
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | /* DBRECALL() - recall a record marked for deletion (number 8) */ | |
− | /* | + | /*-------------------------------------------------------------*/ |
− | + | rc = dbrecall(dbf, 8L); | |
− | + | errorproc("dbrecall()", "record 8 recalled.", rc); | |
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | /* DBRMVKEY() - physically remove a key. As of v8.0, this function */ | |
− | /* is not permitted on tables opened shareable. */ | + | /* is not permitted on tables opened shareable. */ |
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | /* rc = dbrmvkey(ndx, "Unknown Vessel ", db_size+1L); */ | |
− | + | /* errorproc("dbrmvkey()", "key physically removed.", rc); */ | |
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | /* DBRMVR() - physically remove a data record. As of v8.0 this */ | |
− | /* function is not permitted on tables opened shareable. */ | + | /* function is not permitted on tables opened shareable. */ |
− | /* | + | /*------------------------------------------------------------------*/ |
− | + | /* rc = dbrmvr(dbf, db_size+1L); */ | |
− | + | /* errorproc("dbrmvr()", "record 7 physically removed.", rc); */ | |
− | /* | + | /*------------------------------------*/ |
− | + | /* DBUNLOCKF() - unlocks a table file */ | |
− | /* | + | /*------------------------------------*/ |
− | + | rc = dbunlockf(dbf); | |
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function: \tdbunlockf() \tFile unlocked successfully\n"); | |
− | + | } else { | |
− | + | printf("Unlock Failed. \tError: %d\n", rc); | |
} | } | ||
− | /* | + | /*-------------------------------------*/ |
− | + | /* DBUNLOCKI() - unlocks an index file */ | |
− | /* | + | /*-------------------------------------*/ |
− | + | rc = dbunlocki(ndx); | |
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function: \tdbunlocki() \tFile unlocked successfully\n"); | |
− | + | } else { | |
− | + | printf("Unlock Failed. \tError: %d\n", rc); | |
} | } | ||
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | /* DBLOCKR() - tests available record locking in a multiuser */ | |
− | + | /* environment. Same as DBTLOCKR() in multi access */ | |
− | /* | + | /*---------------------------------------------------------------*/ |
− | + | rc = dblockr(dbf, (long)7); | |
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function: \tdblockr() \trecord locked successfully.\n"); | |
− | + | } else { | |
− | + | printf("Lock Failed. \tError: %d\n", rc); | |
} | } | ||
− | /* | + | /*--------------------------------------*/ |
− | + | /* DBUNLOCKR() - unlocks a table Record */ | |
− | /* | + | /*--------------------------------------*/ |
− | + | rc = dbunlockr(dbf, (long)7); | |
− | + | if ( rc == SUCCESS ) { | |
− | + | printf("Function \tdbunlockr(): \trecord unlocked successfully\n"); | |
− | + | } else { | |
− | + | printf("Unlock Failed. \tError: %d\n", rc); | |
} | } | ||
− | |||
− | |||
− | |||
− | + | /*--------------------------------------*/ | |
− | + | /* Perform record/index close functions */ | |
− | + | /*--------------------------------------*/ | |
− | + | ||
− | + | ||
− | /* | + | /*-------------------------------------*/ |
− | + | /* DBICLOSE() - close the active index */ | |
− | /* | + | /*-------------------------------------*/ |
− | + | rc = dbiclose(ndx); | |
− | + | errorproc("dbiclose()", "index closed.", rc); | |
− | /* | + | /*--------------------------------------------*/ |
− | + | /* DBXCLOSE() - close the active tagged index */ | |
− | /* | + | /*--------------------------------------------*/ |
− | + | rc = dbxclose(dbx); | |
− | + | errorproc("dbxclose()", "tagged index closed.", rc); | |
− | /* | + | /*------------------------------------*/ |
− | + | /* DBCLOSE() - close the active table */ | |
− | /* | + | /*------------------------------------*/ |
− | + | rc = dbclose(dbf); | |
− | + | errorproc("dbclose()", "table closed.", rc); | |
− | /* | + | /*------------------------------------------*/ |
− | + | /* DBMCLOSE() - close the active memo table */ | |
− | /* | + | /*------------------------------------------*/ |
+ | rc = dbmclose(dbt); | ||
+ | errorproc("dbmclose()", "memo table closed.", rc); | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | + | /*-------------------------------------------------*/ | |
+ | /* Perform miscellaneous Recital/Library functions */ | ||
+ | /*-------------------------------------------------*/ | ||
− | + | /*-----------------------------------------------------------*/ | |
+ | /* DBONERROR() - enables/disables (1/0) recovery from errors */ | ||
+ | /*-----------------------------------------------------------*/ | ||
+ | dbonerror(0); /* Recovery disabled */ | ||
+ | printf("Function: \tdbonerror() \terror checking disabled\n"); | ||
− | + | printf("\nEnd of Recital C Library test program....\n"); | |
− | + | exit(0); | |
− | + | ||
− | + | ||
− | + | ||
− | + | ||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
− | |||
} | } | ||
− | |||
− | + | /*----------------------------------------------------------------------*/ | |
− | + | /* This procedure handles the return codes from called RECITAL/library */ | |
− | + | /* functions. Intended to eliminate cryptic 'if...else...' statements */ | |
+ | /* following library calls. */ | ||
+ | /*----------------------------------------------------------------------*/ | ||
+ | |||
+ | 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; | ||
+ | } |
Revision as of 13:49, 6 May 2009
/*#============================================================================
*# Copyright (C) 1988-1991 Recital Corporation Inc. *# As an unpublished licenced proprietary work. *# All rights reserved worldwide. *# *# This program may be freely copied and used as a template for user *# programs which make use of the Recital/Library in so long as the above *# copyright notice is included. *# *#============================================================================ * * MODULE : dblsamp.c * * PURPOSE : Recital DataBase Library sample program. * * AUTHOR : RECITAL CORPORATION * * DATE : 26 Jan 91 * REVISION : 29 Oct 91 * REVISION : 09 May 95 * *==========================================================================*/
- include <stdio.h>
- include <stdlib.h>
- include <string.h>
- include <sys/types.h>
- include <unistd.h>
- include "dbl.h" /* Recital/Library include file */
- include "dblproto.h" /* Recital/Library prototype file */
extern int g_disable_iostats;
/*----------------------------------------------*/ /* Table structure for db to be constructed. */ /* Structure dBFIELD defined in dbl.h. */ /*----------------------------------------------*/ static dBFIELD fields[7] = {
"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, "MEMO", 'M', sizeof(MEMO), 0, 0
};
- define DB_RECORD_SIZE 100
/*----------------------------------------------*/ /* Static Error Handling procedure. */ /*----------------------------------------------*/ static void errorproc( char *func, char *str, int rc);
/*----------------------------------------------*/ /* Table records to add. */ /*----------------------------------------------*/ 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 program entry point. */
/*---------------------------*/
main()
{
int rc; /* Return Code for error handling */ char *dbf; /* File descriptor for table */ char *dbx; /* File descriptor for tagged index */ char *ndx; /* File descriptor for index */ char *dbt; /* File descriptor for memo file */ char record[DB_RECORD_SIZE]; /* Array of char for records */ char keytype; /* Variable for varying keytype */ char key[21]; /* Storage location for keys */ char tagname[21]; /* Storage location for tag name */ char keyexpr[512]; /* Storage location for key expr */ char forexpr[512]; /* Storage location for for expr */ int kexprlen; /* The key expression length */ int keylen; /* The key length */ dBFIELD dbfields[MAX_RECORD_FIELDS]; /* Storage location for fld names */ FLDNUM fieldcount; /* Number of fields to create */ int fldpos[MAX_RECORD_FIELDS]; /* Fields position buffer */ char flddes[MAX_RECORD_FIELDS][26]; /* Fields description buffer */ char tmpbuf[81]; /* Temporary storage buffer */ char fldbuf[MAX_RECORD_FIELDS][256]; /* Field buffer (recin()/out()) */ char nextkey[10][20]; /* Key buffers (dbnkey()) */ char status; /* Deleted record flag */ long recno; /* Table record variable */ long rec_no[10]; /* Record number array (dbnkey()) */ long db_size; /* Size of table variable */ int reclen; /* Table record length variable */ char month; /* Month variable */ char day; /* Day variable */ char year; /* Year variable */ FLDNUM nofields; /* Number of table fields var */ int i; /* Loop control variable */ double n; /* Double numeric variable */
int keyunique; /* Boolean for unqiue tag key */ int keydescend; /* Boolean for descending tag key */ int notags; /* number of tags in a dbx file */
/*----------------------------------------------------*/ /* Perform operational Library environment functions. */ /*----------------------------------------------------*/
/*---------------------------------------------------------------*/
/* DBDCACHE() - this example allocates a 100 record caching area */
/*---------------------------------------------------------------*/
rc = dbdcache(100); errorproc("dbdcache()","table cache specified.", rc);
/*-------------------------------------------------------------------*/
/* DBICACHE() - this example allocates 51200 bytes for index caching */
/*-------------------------------------------------------------------*/
rc = dbicache(100); errorproc("dbicache()", "index cache specified.",rc);
/*------------------------------------------*/
/* DBFILEMODE() - shared, read write access */
/*------------------------------------------*/
rc = dbfilemode(1,0); errorproc("dbfilemode()", "filemode specified.", rc);
/*------------------------------------------*/
/* DBSET() - Set exact index match to true */
/*------------------------------------------*/
rc = dbset("EXACT", 1); errorproc("dbset()", "filemode specified.", rc);
/*--------------------------------*/ /* Perform basic table functions. */ /*--------------------------------*/ fieldcount = 7; /* Number of Fields */
/*-----------------------------------------------------------*/
/* DBCREAT() - this example creates a table according to the */ /* 'dBFIELD' array fields. */
/*-----------------------------------------------------------*/
rc = dbcreat("shipwreck.dbf",fieldcount, fields); errorproc("dbcreat()","datebase created.", rc);
/*----------------------------------------------------------------*/
/* DBCREATX() - Enables the addition of table field descriptions. */
/*----------------------------------------------------------------*/
strcpy(flddes[0], "The vessel's name."); strcpy(flddes[1], "The latitude."); strcpy(flddes[2], "The longitude."); strcpy(flddes[3], "The value."); strcpy(flddes[4], "The date."); strcpy(flddes[5], "The vessel's flag."); strcpy(flddes[6], "Notes.");
rc = dbcreatx("shipwreck.dbf", fieldcount, fields, flddes);
/*----------------------------------------------------------------*/
/* DBOPEN() - example opens table 'shipwreck.dbf' returning the */ /* table file descriptor (dbf) used in upcoming funcs */
/*----------------------------------------------------------------*/
rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened.", rc);
/*-------------------------------------------------------------*/
/* DBGETF() - obtain table information on the table referenced */ /* by the 'dbf' file descriptor. */
/*-------------------------------------------------------------*/
rc = dbgetf(dbf, &reclen, &month, &day, &year, &nofields, dbfields); errorproc("dbgetf()","information retrieved.", rc); printf("\t\tRecord length in bytes: %d\n", reclen); printf("\t\tCreation date: \t\t%d/%d/%d\n",month,day,year); printf("\t\tNumber of fields: \t%d\n", nofields);
/*-----------------------------------------------------------------*/
/* DBGETFX() - obtain extended table information including the */ /* numeric field location array (fldpos) and the field */ /* descriptions (flddes). */
/*-----------------------------------------------------------------*/
rc = dbgetfx(dbf, &reclen, &month, &day, &year, &nofields, dbfields, fldpos, flddes); errorproc("dbgetfx()", "extra information retrieved.", rc); printf("\t\tLocation of fields in buffer: \t%d,%d,%d,%d,%d,%d\n", fldpos[1],fldpos[2],fldpos[3],fldpos[4],fldpos[5],fldpos[6]);
/*-------------------------------------------------------------*/
/* DBLOCKF() - locks the table for following additions. */ /* Synonomous with DBTLOCKF() which tests the lock */
/*-------------------------------------------------------------*/
rc = dblockf(dbf); if ( rc == SUCCESS ) { printf("Function: \tdblockf() \tfile locked successfully.\n"); } else { printf("Lock Failed. \tError: %d\n",rc);
}
/*------------------------------------*/
/* DBCLOSE() - close the active table */
/*------------------------------------*/ rc = dbclose(dbf);
errorproc("dbclose()", "table closed.", rc);
/*----------------------------------------------*/
/* Exclusive, read write access of the table is */
/* required to create or delete tags. */ /*----------------------------------------------*/
rc = dbfilemode(0,0); rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened in exclusive mode.", rc);
/*---------------------------------------*/ /* Perform basic tagged index functions. */ /*---------------------------------------*/
/*--------------------------------------------------------------*/
/* DBXCREATE() - in this example creates an tag on field VESSEL */
/*--------------------------------------------------------------*/
rc = dbxcreate( dbf,
fields[0].fieldnm, /* "VESSEL", */ &dbx, fields[0].fieldnm, /* "VESSEL", */ NULL, 0, 0);
errorproc("dbxcreate()","tag created", rc);
/*------------------------------------------------------------*/
/* DBXCREATE() - in this example creates an tag on field FLAG */
/*------------------------------------------------------------*/
rc = dbxcreate( dbf,
fields[5].fieldnm, /* "FLAG", */ &dbx, fields[5].fieldnm, /* "FLAG", */ NULL, 0, 0);
errorproc("dbxcreate()","tag created", rc);
/*----------------------------------------------------*/
/* DBXNOTAGS() - obtains the number of tagged indexes */
/*----------------------------------------------------*/
rc = dbxnotags(dbx, ¬ags); errorproc("dbxnotags()","tagged index count obtained.", rc); printf("\t Key count: \t%d\n", notags );
/*-----------------------------------------------*/
/* DBXKEXPR() - obtains tagged index information */
/*-----------------------------------------------*/ for (i = 1; i <= notags; i++) {
rc = dbxkexpr(dbx,
&i, tagname, &keytype, keyexpr, forexpr, &kexprlen, &keylen, &keyunique, &keydescend);
errorproc("dbxkexpr()", "key information retrieved.", rc); printf("\t Key number: \t%d\n", i ); printf("\t Key name: \t%s\n", tagname ); printf("\t Key type: \t%c\n", keytype ); printf("\t Key expression: %s\n", keyexpr); printf("\t Key length: %d Expression length: %d\n", kexprlen, keylen); printf("\t For expression: %s\n", forexpr); printf("\t Key unique: \t%s\n", keyunique ? "Yes" : "No" ); printf("\t Key descending: \t%s\n", keydescend?"Yes":"No" );
}
/*----------------------------------------*/
/* DBXDROPTAGS() - Drop the specified tag */
/*----------------------------------------*/
rc = dbxdroptag(dbx, fields[5].fieldnm); errorproc("dbxdroptag()","tagged index 'FLAG' dropped.", rc);
/*--------------------------------------------*/
/* DBXCLOSE() - close the active tagged index */
/*--------------------------------------------*/
rc = dbxclose(dbx); errorproc("dbxclose()", "tagged index closed.", rc);
/*------------------------------------*/
/* DBCLOSE() - close the active table */
/*------------------------------------*/
rc = dbclose(dbf); errorproc("dbclose()", "table closed.", rc);
/*----------------------------------------------------*/
/* Reopen the table in shared, read-write access mode */
/*----------------------------------------------------*/
rc = dbfilemode(1,0); rc = dbopen("shipwreck.dbf", &dbf); errorproc("dbopen()","table opened in shared mode.", rc);
/*--------------------------------------------------------------------*/
/* DBXOPEN() - example opens tag index 'shipwreck.dbx' returning the */ /* taged index file descriptor (dbx) used in upcoming funcs */
/*--------------------------------------------------------------------*/
rc = dbxopen(dbf, "shipwreck.dbx", &dbx); errorproc("dbxopen()","tagged index opened.", rc);
/*--------------------------------*/ /* Perform basic index functions. */ /*--------------------------------*/
/*---------------------------------------------------------------*/
/* DBICREAT() - in this example creates an index on field VESSEL */
/*---------------------------------------------------------------*/
rc = dbicreat( "shipwreck.ndx", fields[0].fieldnm, 18, 'C'); errorproc("dbicreat()","index created", rc);
/*------------------------------------------*/
/* DBIOPEN() - opens index to active status */
/*------------------------------------------*/
rc = dbiopen( "shipwreck.ndx", &ndx); errorproc("dbiopen()", "index opened.", rc);
/*---------------------------------------*/
/* DBKEXPR() - obtains index information */
/*---------------------------------------*/
rc = dbkexpr(ndx, &keytype, keyexpr, &kexprlen, &keylen); errorproc("dbkexpr()", "key information retrieved.", rc); printf("\t Key type: \t%c\n", keytype ); printf("\t Key expression: %s\n", keyexpr); printf("\t Key length: %d Expression length: %d\n", kexprlen, keylen);
/*----------------*/ /* Lock data file */ /*----------------*/ rc = dblockf(dbf);
if ( rc == SUCCESS ) { printf("Function: \tdblockf() \tfile locked successfully.\n"); } else { printf("Lock Failed. \tError: %d\n",rc);
}
/*-------------------------------------------------------------*/
/* DBLOCKI() - locks the index for following additions */ /* Synonomous with DBTLOCKI() which tests the lock */
/*-------------------------------------------------------------*/
rc = dblocki(ndx); if ( rc == SUCCESS ) { printf("Function: \tdblocki() \tindex locked successfully.\n"); } else { printf("Lock Failed. \tError: %d\n",rc);
}
/*------------------------------------*/ /* Perform basic memo file functions. */ /*------------------------------------*/
/*----------------------------------------------------------------*/
/* DBMCREAT() - creates a table memo file (if one needs creating) */
/*----------------------------------------------------------------*/
rc = dbmcreat("shipwreck.dbt"); errorproc("dbmcreat()", "memo file create", rc);
/*-------------------------------------------*/
/* DBMOPEN() - opens an associated memo file */
/*-------------------------------------------*/
rc = dbmopen("shipwreck.dbt", &dbt); errorproc("dbmopen()", "memo file open.", rc);
/*--------------------------------*/ /* Perform table input functions. */ /*--------------------------------*/
/*--------------------------------------------------------------*/
/* DBAPPEND() - appends a record to the end of the active table */
/*--------------------------------------------------------------*/
rc = dbappend(dbf, text_table[0], &recno); errorproc("dbappend()", "record appended.", rc);
/*------------------------------------------------------------*/
/* DBAKEY() - adds a key to the active index after dbappend() */
/*------------------------------------------------------------*/
rc = dbakey(ndx,"Santa Margarita " , recno); errorproc("dbakey()", "key added.", rc);
/*-------------------------------------------------------------*/
/* DBXAKEY() - adds a key to the tagged index after dbappend() */
/* The tagged index file must be lock first */ /*-------------------------------------------------------------*/
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);
/*----------------------------------------------*/
/* DBFLUSH() - flushes the record cache to disk */
/*----------------------------------------------*/
rc = dbflush(dbf); errorproc("dbflush()", "table cache flushed.", rc);
/*---------------------------------------------*/
/* DBIFLSH() - flushes the index cache to disk */
/*---------------------------------------------*/
rc = dbiflsh(ndx); errorproc("dbiflsh()", "index cache flushed.", rc);
/*----------------------------------------------------*/
/* DBXFLSH() - flushes the tagged index cache to disk */
/*----------------------------------------------------*/
rc = dbxflsh(dbx); errorproc("dbxflsh()", "Tagged index cache flushed.", rc);
/*-------------------------------*/
/* DBGETR() - retrieves a record */
/*-------------------------------*/
rc = dbgetr(dbf, (long)1, record, &status); errorproc("dbgetr()", "record retreived.", rc); printf("\t\t%s\n", record);
/*-------------------------------------*/
/* DBPUTM() - put the memo information */
/*-------------------------------------*/
rc = dbputm(dbt, "128' 30% coral cover.", &record[53]); errorproc("dbputm", "memo placed in buffer",rc);
/*-----------------------------------------------------------*/
/* DBUPDR() - updates the record in buffer 'record' */
/* As of v8.0 this function automatically updates */ /* any attached indexes. */ /*-----------------------------------------------------------*/
rc = dbupdr(dbf, (long)1, record); errorproc("dbupdr()", "record updated.", rc);
/*------------------------------------------------------------------*/
/* DBGETM() - this example extracts the memo from the record buffer */
/*------------------------------------------------------------------*/
rc = dbgetm(dbt, &record[53], tmpbuf, 0); errorproc("dbgetm()", "retreived memo.", rc);
/*--------------------------------------------------*/
/* DBUPDM() - Updates the memofield for this record */
/*--------------------------------------------------*/
strcat(tmpbuf, " Appending this string to the end of memo..."); rc = dbupdm(dbt, tmpbuf, &record[53], &record[53]); errorproc("dbupdm()", "updated memo.", rc);
/*--------------------------------------------------------------*/
/* DBPUTRK() - the following example adds a record and index */ /* to the respective files. */ /* DBRECOUT() - scatter the record stored in buffer 'record' to */ /* two dimensional character array 'fldbuf' */
/*--------------------------------------------------------------*/
/*------------------------*/
/* Read in 6 more records */
/*------------------------*/
for( i = 1; i <= 6; i++) { dbrecout( dbf, dbfields, fldpos, text_table[i], fldbuf); rc = dbputrk(dbf, ndx, fldbuf[0], text_table[i]); errorproc("dbputrk()", "record placed by key.", rc); } errorproc("dbputrk()", "6 records placed by key.", rc);
/*----------------------------------------------*/
/* DBFLUSH() - flushes the record cache to disk */
/*----------------------------------------------*/
rc = dbflush(dbf); errorproc("dbflush()", "table cache flushed.", rc);
/*---------------------------------------------*/
/* DBIFLSH() - flushes the index cache to disk */
/*---------------------------------------------*/
rc = dbiflsh(ndx); errorproc("dbiflsh()", "index cache flushed.", rc);
/*----------------------------------------------------*/
/* DBXFLSH() - flushes the tagged index cache to disk */
/*----------------------------------------------------*/
rc = dbxflsh(dbx); errorproc("dbxflsh()", "Tagged index cache flushed.", rc);
/*---------------------------------------------------------------*/
/* DBFIELD() - this example extracts the field 'VESSEL' from the */ /* record (#5) stored in buffer 'record' */
/*---------------------------------------------------------------*/
rc = dbgetr(dbf, (long)5, record, &status); /* rc = dbfield( dbf, record, "FLAG", tmpbuf); */ rc = dbfield( dbf, record, fields[5].fieldnm, tmpbuf); errorproc("dbfield()", "field extracted.", rc); printf("\t\tFlag: \t%s\n", tmpbuf);
/*------------------------------------------*/
/* Modify a single field in record number 5 */
/*------------------------------------------*/
/*----------------------------------------------------------------*/
/* DBSCATTER() - scatters the record into specified field buffers.*/
/*----------------------------------------------------------------*/
rc = dbscatter(dbf, record, fldbuf); errorproc("dbscatter()", "record scattered.", rc);
strcpy(fldbuf[6], "Spanish"); /* Modify Field */
/*----------------------------------------------------------------*/
/* DBGATHER() - Gathers the field buffers and places the contents */
/*----------------------------------------------------------------*/
rc = dbgather(dbf, record, fldbuf); errorproc("dbgather()", "record gathered.", rc); printf("\t\t%s\n", record);
rc = dbupdr(dbf, (long)5, record); /* Finish Example */ errorproc("dbupdr()", "record updated.", rc);
/*---------------------------------------------*/ /* Perform index / index conversion functions. */ /*---------------------------------------------*/
/*-------------------------------------------------------------*/
/* DBREWIND() - positions the record pointer to the top of the */ /* index file */
/*-------------------------------------------------------------*/
rc = dbrewind(ndx); errorproc("dbrewind()", "index rewound.", rc);
/*----------------------------------------------------------*/
/* DBGETNR() - after 'rewind()ing' to the top of the table */ /* the first record using the active key can be */ /* retrieved with dbgetnr() */
/*----------------------------------------------------------*/
for( i = 1; i <= 6; i++) { rc = dbgetnr(dbf, ndx, record, &status); printf("\t\t%d: %s\n", i,record); } errorproc("dbgetnr()", "6 records retrieved by key.", rc);
/*-------------------------*/
/* DBNKEY() - get next key */
/*-------------------------*/
rc = dbnkey(ndx, nextkey[0], rec_no); errorproc("dbnkey()", "next key retrieved.", rc); printf("\t\tnext key: \t%s\n", nextkey[0]);
/*--------------------------------------------------------*/
/* DBFWD() - position the pointer to the end of the table */
/*--------------------------------------------------------*/
rc = dbfwd(ndx); errorproc("dbfwd()", "index pointer placed at bottom.", rc);
/*-----------------------------*/
/* DBPKEY() - get previous key */
/*-----------------------------*/
rc = dbpkey(ndx, nextkey[0], rec_no); errorproc("dbpkey()", "previous key found.", rc); printf("\t\tprev key: \t%s\n", nextkey[0]);
/*-----------------------------------------------*/
/* DBGETPR() - obtain the previous record by key */
/*-----------------------------------------------*/
rc = dbgetpr(dbf, ndx, record, &status); errorproc("dbgetpr()", "previous record (by key) retrieved.", rc); printf("Previous: \t%s\n", record);
/*------------------*/
/* Rewind the index */
/*------------------*/
dbrewind(ndx);
/*--------------------------------------------------*/ /* Perform table retrieval functions using indexes. */ /*--------------------------------------------------*/
/*-----------------------------------------------------*/
/* DBTKEY() - translates supplied key to record number */
/*-----------------------------------------------------*/
rc = dbtkey(ndx, "Santa Rosa ", &recno); errorproc("dbtkey()", "record number found by key.", rc); printf("\t\trecord number: \t%d\n", recno);
/*-------------------------------------------------------*/
/* DBGETRK() - obtains the record from the specified key */
/*-------------------------------------------------------*/
rc = dbgetrk(dbf, ndx, "Santa Rosa ", record, &status); errorproc("dbgetrk()", "record retrieved by key.", rc); printf("\t\t%s\n", record);
/*---------------------------------*/
/* DBCKEY() - read the current key */
/*---------------------------------*/
rc = dbckey(ndx, key, &recno); errorproc("dbckey()", "current key read.", rc); printf("\t\tcurrent key: \t%s\n", key);
/*---------------------------------*/ /* Perform tagged index functions. */ /*---------------------------------*/
/*--------------------------------------------------------------*/
/* DBXREWIND() - positions the record pointer to the top of the */ /* index file */
/*--------------------------------------------------------------*/
rc = dbxrewind(dbx); errorproc("dbxrewind()", "Tagged index rewound.", rc);
/*-----------------------------------------------------------*/
/* DBXGETNR() - after 'rewind()ing' to the top of the table */ /* the first record using the active key can be */ /* retrieved with dbgetnr() */
/*-----------------------------------------------------------*/
for( i = 1; i <= 6; i++) { rc = dbxgetnr(dbf, dbx, record, &status); printf("\t\t%d: %s\n", i,record); } errorproc("dbxgetnr()", "6 records retrieved by tag key.", rc);
/*--------------------------*/
/* DBXNKEY() - get next key */
/*--------------------------*/
rc = dbxnkey(dbx, nextkey[0], rec_no); errorproc("dbxnkey()", "next key retrieved in tagged index.", rc); printf("\t\tnext key: \t%s\n", nextkey[0]);
/*---------------------------------------------------------*/
/* DBXFWD() - position the pointer to the end of the table */
/*---------------------------------------------------------*/
rc = dbxfwd(dbx); errorproc("dbxfwd()", "index pointer placed at bottom.", rc);
/*-----------------------------*/
/* DBXPKEY() - get previous key */
/*-----------------------------*/
rc = dbxpkey(dbx, nextkey[0], rec_no); errorproc("dbxpkey()", "previous key found in tagged index.", rc); printf("\t\tprev key: \t%s\n", nextkey[0]);
/*------------------------------------------------*/
/* DBXGETPR() - obtain the previous record by key */
/*------------------------------------------------*/
rc = dbxgetpr(dbf, dbx, record, &status); errorproc("dbxgetpr()", "previous record (by key) retrieved.", rc); printf("Previous: \t%s\n", record);
/*------------------*/
/* Rewind the index */
/*------------------*/
dbxrewind(dbx);
/*---------------------------------------------------------*/ /* Perform table retrieval functions using tagged indexes. */ /*---------------------------------------------------------*/
/*-----------------------------------------------------*/
/* DBTKEY() - translates supplied key to record number */
/*-----------------------------------------------------*/
rc = dbtkey(ndx, "Santa Rosa ", &recno); errorproc("dbtkey()", "record number found by key.", rc); printf("\t\trecord number: \t%d\n", recno);
/*--------------------------------------------------------*/
/* DBXGETRK() - obtains the record from the specified key */
/*--------------------------------------------------------*/
rc = dbxgetrk(dbf, dbx, "Santa Rosa ", record, &status); errorproc("dbxgetrk()", "record retrieved by key.", rc); printf("\t\t%s\n", record);
/*---------------------------------*/
/* DBXCKEY() - read the current key */
/*---------------------------------*/
rc = dbxckey(dbx, key, &recno); errorproc("dbxckey()", "current key read.", rc); printf("\t\tcurrent key: \t%s\n", key);
/*---------------------------------------------------------------*/ /* Perform field level functions including index/ASCII functions.*/ /*---------------------------------------------------------------*/
/*-------------------------------------------------------------*/
/* DBATOFLD() - converts ASCII string to Recital compat. field */
/*-------------------------------------------------------------*/
rc = dbatofld("23.3", 4, 1, tmpbuf); errorproc("dbatofld()", "string converted.", rc);
/*----------------------------------------------------------*/
/* DBATOKEY() - converts a ASCII string to Recital date key */
/*-----------------------------------------------------------*/
key[0] = 'D'; rc = dbatokey("16430411", key); errorproc("dbatokey()", "string converted to key.", rc);
/*------------------------------------------------*/
/* DBFLDTOA() - converts extracted field to ASCII */
/*------------------------------------------------*/
rc = dbfldtoa(record + 18, 4, tmpbuf); errorproc("dbfldtoa()", "field converted.", rc);
/*---------------------------------------------------------*/
/* DBSTRCPY() - formats character strings to Rectial types */
/*---------------------------------------------------------*/
dbstrcpy(key, 'L', 10, " 320000"); printf("Function: \tdbstrcpy() \toutput: %s\n", key);
/*---------------------------------------------------------------*/
/* DBSTRING() - formats non-'C' strings to C strings (null term) */
/*---------------------------------------------------------------*/
dbstring("Santa Pedro", 13, tmpbuf); printf("Function: \tdbstring() \toutput: %s\n", tmpbuf);
/*-------------------------------------------------*/
/* DBKEYTOA() - converts an extracted key to ASCII */
/*-------------------------------------------------*/
tmpbuf[0] = 0; /* Number of dec. places */ tmpbuf[1] = 'N'; /* Key Type */ rc = dbkeytoa(key, tmpbuf); errorproc("dbkeytoa()", "key converted.", rc);
/*-----------------------------------------------*/ /* Perform record/index deletion and file access */ /*-----------------------------------------------*/
/*-------------------------------------------*/
/* DBSIZE() - retrieve the size of the table */
/*-------------------------------------------*/
rc = dbsize(dbf, &db_size); errorproc("dbsize()", "size retrieved.", rc); printf("\t No. of Records: \t%d\n", db_size);
/*---------------------------------------------------------------*/
/* DBPUTR() - adds a record to the end of the table */ /* You can also 'insert' a record using this function */
/*---------------------------------------------------------------*/
rc = dbputr(dbf, db_size + 1L, text_table[7]); errorproc("dbputr()", "record placed.", rc); rc = dbakey(ndx,"Unknown Vessel " , db_size + 1L); errorproc("dbakey()", "key added.", rc); rc = dbxakey(dbx, db_size + 1L); errorproc("dbxakey()", "key added.", rc);
dbflush(dbf); /* Good Habit on shared files */ dbiflsh(ndx);
dbxflsh(dbx);
/*----------------------------------------------------*/
/* DBDELETE() - mark a record (number 8) for deletion */
/*----------------------------------------------------*/
rc = dbdelete(dbf, 8L); errorproc("dbdelete()", "record 8 marked for deletion.", rc);
/*-------------------------------------------------------------*/
/* DBRECALL() - recall a record marked for deletion (number 8) */
/*-------------------------------------------------------------*/
rc = dbrecall(dbf, 8L); errorproc("dbrecall()", "record 8 recalled.", rc);
/*------------------------------------------------------------------*/
/* DBRMVKEY() - physically remove a key. As of v8.0, this function */
/* is not permitted on tables opened shareable. */ /*------------------------------------------------------------------*/
/* rc = dbrmvkey(ndx, "Unknown Vessel ", db_size+1L); */ /* errorproc("dbrmvkey()", "key physically removed.", rc); */
/*------------------------------------------------------------------*/
/* DBRMVR() - physically remove a data record. As of v8.0 this */
/* function is not permitted on tables opened shareable. */ /*------------------------------------------------------------------*/
/* rc = dbrmvr(dbf, db_size+1L); */ /* errorproc("dbrmvr()", "record 7 physically removed.", rc); */
/*------------------------------------*/
/* DBUNLOCKF() - unlocks a table file */
/*------------------------------------*/
rc = dbunlockf(dbf); if ( rc == SUCCESS ) { printf("Function: \tdbunlockf() \tFile unlocked successfully\n"); } else { printf("Unlock Failed. \tError: %d\n", rc);
}
/*-------------------------------------*/
/* DBUNLOCKI() - unlocks an index file */
/*-------------------------------------*/
rc = dbunlocki(ndx); if ( rc == SUCCESS ) { printf("Function: \tdbunlocki() \tFile unlocked successfully\n"); } else { printf("Unlock Failed. \tError: %d\n", rc);
}
/*---------------------------------------------------------------*/
/* DBLOCKR() - tests available record locking in a multiuser */ /* environment. Same as DBTLOCKR() in multi access */
/*---------------------------------------------------------------*/
rc = dblockr(dbf, (long)7); if ( rc == SUCCESS ) { printf("Function: \tdblockr() \trecord locked successfully.\n"); } else { printf("Lock Failed. \tError: %d\n", rc);
}
/*--------------------------------------*/
/* DBUNLOCKR() - unlocks a table Record */
/*--------------------------------------*/
rc = dbunlockr(dbf, (long)7); if ( rc == SUCCESS ) { printf("Function \tdbunlockr(): \trecord unlocked successfully\n"); } else { printf("Unlock Failed. \tError: %d\n", rc);
}
/*--------------------------------------*/ /* Perform record/index close functions */ /*--------------------------------------*/
/*-------------------------------------*/
/* DBICLOSE() - close the active index */
/*-------------------------------------*/
rc = dbiclose(ndx); errorproc("dbiclose()", "index closed.", rc);
/*--------------------------------------------*/
/* DBXCLOSE() - close the active tagged index */
/*--------------------------------------------*/
rc = dbxclose(dbx); errorproc("dbxclose()", "tagged index closed.", rc);
/*------------------------------------*/
/* DBCLOSE() - close the active table */
/*------------------------------------*/
rc = dbclose(dbf); errorproc("dbclose()", "table closed.", rc);
/*------------------------------------------*/
/* DBMCLOSE() - close the active memo table */
/*------------------------------------------*/
rc = dbmclose(dbt); errorproc("dbmclose()", "memo table closed.", rc);
/*-------------------------------------------------*/ /* Perform miscellaneous Recital/Library functions */ /*-------------------------------------------------*/
/*-----------------------------------------------------------*/
/* DBONERROR() - enables/disables (1/0) recovery from errors */
/*-----------------------------------------------------------*/
dbonerror(0); /* Recovery disabled */ printf("Function: \tdbonerror() \terror checking disabled\n");
printf("\nEnd of Recital C Library test program....\n");
exit(0);
}
/*----------------------------------------------------------------------*/ /* This procedure handles the return codes from called RECITAL/library */ /* functions. Intended to eliminate cryptic 'if...else...' statements */ /* following library calls. */ /*----------------------------------------------------------------------*/
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;
}