Yurttas/PL/DBL/oracle/F/03/SPJ/Projects-ins.pc
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1/*
2REM
3REM
4REM Projects-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 jn[4];
23 char jname[16];
24 char city[16];
25} projects;
26
27void connect_to_oracle();
28void sql_error();
29
30void main(int argc, char* argv[]) {
31 FILE *in_file;
32
33 char in_filename[32];
34
35 if(argc<2) {
36 printf("Enter the input filename : ");
37 scanf("%s", in_filename);
38 }
39 else strcpy(in_filename, argv[1]);
40
41 in_file = fopen(in_filename, "r");
42
43 if(in_file==NULL)
44 printf("File named as %s is not opened for input.\n", in_filename);
45 else {
46 connect_to_oracle();
47
48 EXEC SQL
49 WHENEVER SQLERROR DO sql_error("Error in INSERT_table: Projects");
50
51 while(fscanf(in_file,"%3c %7c %8c\n",projects.jn,
52 projects.jname,
53 projects.city)!=EOF){
54 EXEC SQL
55 INSERT INTO Projects
56 VALUES(:projects.jn,
57 :projects.jname,
58 :projects.city);
59 }
60 }
61
62 EXEC SQL COMMIT WORK RELEASE;
63
64 exit(0);
65}
66
67
68void sql_error(char* msg) {
69 char err_msg[128];
70 int buflen, msglen;
71
72 EXEC SQL WHENEVER SQLERROR CONTINUE;
73
74 printf("%s \n", msg);
75 buflen = sizeof(err_msg);
76 sqlglm(err_msg, &buflen, &msglen);
77 printf("%.*s \n", msglen, err_msg);
78 exit(1);
79}
80
81
82void connect_to_oracle() {
83 /* get your username/passwd from "user_pwd.txt" file */
84
85 FILE *in_file;
86 in_file = fopen("user_pwd.txt", "r");
87 fscanf(in_file, "%s", u_name);
88 fscanf(in_file, "%s", pwd);
89
90 strncpy((char *) username.arr, u_name, UNAME_LEN);
91 username.len = strlen((char *) username.arr);
92
93 strncpy((char *) password.arr, pwd, PWD_LEN);
94 password.len = strlen((char *) password.arr);
95
96 EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
97 EXEC SQL CONNECT :username IDENTIFIED BY :password;
98
99 printf("connected to oracle - \n");
100}