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

  1/*
  2REM
  3REM
  4REM Project-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 pname[24];
 23  int pnumber;
 24  char plocation[24];
 25  int dnum;
 26} project;
 27
 28void connect_to_oracle();
 29void sql_error();
 30
 31void main(int argc, char* argv[]) {
 32  FILE *in_file;
 33
 34  char in_filename[32];
 35
 36  if(argc<2) {
 37    printf("Enter the input filename : ");
 38    scanf("%s", in_filename);
 39  }
 40  else strcpy(in_filename, argv[1]);
 41
 42  in_file = fopen(in_filename, "r");
 43
 44  if(in_file==NULL)
 45    printf("File named as %s is not opened for input.\n", in_filename);
 46  else {
 47    connect_to_oracle();
 48
 49    EXEC SQL
 50      WHENEVER SQLERROR DO sql_error("Error in INSERT_table: Project");
 51
 52    while(fscanf(in_file,"%16c %d %10c %d\n",project.pname,
 53                                            &project.pnumber,
 54                                             project.plocation,
 55                                            &project.dnum)!=EOF){
 56      EXEC SQL
 57        INSERT INTO Project
 58          VALUES(:project.pname,
 59                 :project.pnumber,
 60                 :project.plocation,
 61                 :project.dnum);
 62    }
 63  }
 64
 65  EXEC SQL COMMIT WORK RELEASE;
 66
 67  exit(0);
 68}
 69
 70
 71void sql_error(char* msg) {
 72  char err_msg[128];
 73  int buflen, msglen;
 74
 75  EXEC SQL WHENEVER SQLERROR CONTINUE;
 76
 77  printf("%s \n", msg);
 78  buflen = sizeof(err_msg);
 79  sqlglm(err_msg, &buflen, &msglen);
 80  printf("%.*s \n", msglen, err_msg);
 81  exit(1);
 82}
 83
 84
 85void connect_to_oracle() {
 86  /* get your username/passwd from "user_pwd.txt" file */
 87
 88  FILE *in_file;
 89  in_file = fopen("user_pwd.txt", "r");
 90  fscanf(in_file, "%s", u_name);
 91  fscanf(in_file, "%s", pwd);
 92
 93  strncpy((char *) username.arr, u_name, UNAME_LEN);
 94  username.len = strlen((char *) username.arr);
 95
 96  strncpy((char *) password.arr, pwd, PWD_LEN);
 97  password.len = strlen((char *) password.arr);
 98
 99  EXEC SQL WHENEVER SQLERROR DO sql_error ("ORACLE error-- ");
100  EXEC SQL CONNECT :username IDENTIFIED BY :password;
101
102  printf("connected to oracle - \n");
103}