Yurttas/PL/DBL/oracle/F/03/Company-B/Company-ins.pc

 1/*
 2REM
 3REM
 4REM Company-ins.pc
 5REM
 6REM
 7*/
 8
 9#include <stdio.h>
10#include <sqlca.h>
11
12#define UNAME_LEN 32
13#define PWD_LEN   16
14
15VARCHAR username[UNAME_LEN]; /* VARCHAR is an Oracle-supplied struct */
16VARCHAR password[PWD_LEN];   /* varchar can be in lower case also. */
17
18char u_name[UNAME_LEN];
19char pwd[PWD_LEN];
20
21struct {
22  char companyname[24];
23  char city[16];
24} company;
25
26void connect_to_oracle();
27void sql_error();
28
29void main(int argc, char* argv[]) {
30  FILE *in_file;
31
32  char in_filename[32];
33
34  if(argc<2) {
35    printf("Enter the input filename : ");
36    scanf("%s", in_filename);
37  }
38  else strcpy(in_filename, argv[1]);
39
40  in_file = fopen(in_filename, "r");
41
42  if(in_file==NULL)
43    printf("File named as %s is not opened for input.\n", in_filename);
44  else {
45    connect_to_oracle();
46
47    EXEC SQL
48      WHENEVER SQLERROR DO sql_error("Error in INSERT_table: Company");
49
50    while(fscanf(in_file,"%22c %8c\n",company.companyname,
51                                      company.city)!=EOF) {
52      EXEC SQL
53        INSERT INTO Company
54          VALUES(:company.companyname,
55                 :company.city);
56    }
57  }
58
59  EXEC SQL COMMIT WORK RELEASE;
60
61  exit(0);
62}
63
64
65void sql_error(char* msg) {
66  char err_msg[128];
67  int buflen, msglen;
68
69  EXEC SQL WHENEVER SQLERROR CONTINUE;
70
71  printf("%s \n", msg);
72  buflen = sizeof(err_msg);
73  sqlglm(err_msg, &buflen, &msglen);
74  printf("%.*s \n", msglen, err_msg);
75  exit(1);
76}
77
78
79void connect_to_oracle() {
80  /* get your username/passwd from "user_pwd.txt" file */
81
82  FILE *in_file;
83  in_file = fopen("user_pwd.txt", "r");
84  fscanf(in_file, "%s", u_name);
85  fscanf(in_file, "%s", pwd);
86
87  strncpy((char *) username.arr, u_name, UNAME_LEN);
88  username.len = strlen((char *) username.arr);
89
90  strncpy((char *) password.arr, pwd, PWD_LEN);
91  password.len = strlen((char *) password.arr);
92
93  EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
94  EXEC SQL CONNECT :username IDENTIFIED BY :password;
95
96  printf("connected to oracle - \n");
97}