private void Updatebook() throws SQLException {
boolean exit_Add = false;
int id;
Map<Integer, Book> m = as.listBooksFirstLevel2();
Book b = new Book();
System.out.println("\nBook ID | Title | Publisher ID");
System.out.println("----------------------------------------------------------");
Set<Integer> sk = new HashSet<>();
for (Map.Entry<Integer, Book> map : m.entrySet()) {
b = map.getValue();
if (b.getPublisher() != null) {
System.out.println(
map.getKey()
+ " \t\t "
+ b.getTitle()
+ " \t\t "
+ b.getPublisher().getPublisherId());
} else {
System.out.println(map.getKey() + " \t\t " + b.getTitle() + " \t\t NULL");
}
}
do {
System.out.println("Enter the Book Id you want to Update:");
try {
id = Integer.parseInt(sc.nextLine().trim());
if (m.containsKey(id)) {
Updatebook2(id);
} else {
System.out.println("This Id does not exist.");
}
} catch (Exception e) {
System.out.println("INFO:Should be an integer!");
}
if (!exit_Add) {
System.out.println();
System.out.println();
System.out.println("Press ' q ' to return or any other key to continue");
String option = (sc.nextLine());
if (option.length() > 0) {
switch (option.charAt(0)) {
case 'q':
exit_Add = true;
break;
default:
exit_Add = false;
break;
}
}
}
} while (!exit_Add);
}
private void Updatebook2(int id) throws SQLException {
boolean exit_Add = false;
String title;
int pubId;
Map<Integer, Book> m = as.listBooksFirstLevel2();
Set<Publisher> set = as.listpublisher3();
Book b = new Book();
System.out.println("\nPublisher ID | Publisher Name | Publisher Address | Publisher Phone ");
System.out.println("---------------------------------------");
Set<Integer> sk = new HashSet<>();
Map<Integer, Publisher> map = new HashMap<Integer, Publisher>();
for (Publisher s : set) {
sk.add(s.getPublisherId());
map.put(s.getPublisherId(), s);
System.out.println(
s.getPublisherId()
+ "\t "
+ s.getPublisherName()
+ "\t "
+ s.getPublisherAddress()
+ "\t "
+ s.getPublisherPhone());
}
do {
System.out.println();
System.out.println("Enter the New Publisher Id from the list above:\n");
try {
pubId = Integer.parseInt(sc.nextLine().trim());
System.out.println("Enter the New Title:\n");
title = sc.nextLine();
if (title != null && title.length() > 0 && title.length() <= 45) {
if (sk.contains(pubId)) { // if valid publisher ID
b.setBookId(id);
b.setTitle(title);
b.setPublisher(map.get(pubId));
as.updatebook2(b);
System.out.println("Book updated successfully");
exit_Add = true;
} else {
// If invalid publisher ID, just update the title
b.setBookId(id);
b.setTitle(title);
// b.setPublisherId();
as.updatebook(b);
System.out.println("----------------------------------");
System.out.println("Not a valid Publisher Id!");
System.out.println("Only Book tilte updated ");
exit_Add = true;
}
} else {
System.out.println();
System.out.println("Error: Name cannot be empty");
}
} catch (Exception e) {
System.out.println("INFO:Should be an integer!");
}
if (!exit_Add) {
System.out.println();
System.out.println();
System.out.println("Press ' q ' to return or any other key to continue");
String option = (sc.nextLine());
if (option.length() > 0) {
switch (option.charAt(0)) {
case 'q':
exit_Add = true;
break;
default:
exit_Add = false;
break;
}
}
}
} while (!exit_Add);
}
