private static void listUsersBy(final Environment env, final Store store, final String key) {
env.executeInTransaction(
new TransactionalExecutable() {
@Override
public void execute(@NotNull final Transaction txn) {
final ArrayByteIterable emailEntry = stringToEntry(key);
try (Cursor cursor = store.openCursor(txn)) {
if (cursor.getSearchKey(emailEntry) != null) {
boolean hasNext = true;
int i = 0;
for (; hasNext; ++i, hasNext = cursor.getNext()) {
if (!key.equalsIgnoreCase(entryToString(cursor.getKey()))) {
break;
}
System.out.println(entryToString(cursor.getValue()) + ' ' + key);
}
System.out.println("Total found: " + i);
} else if (cursor.getSearchKeyRange(emailEntry) != null) {
System.out.println(key + " not found, nearest candidates: ");
boolean hasNext = true;
for (; hasNext; hasNext = cursor.getNext()) {
final String currentKey = entryToString(cursor.getKey());
if (!currentKey.startsWith(key)) {
break;
}
System.out.println(entryToString(cursor.getValue()) + ' ' + currentKey);
}
} else {
System.out.println("Nothing found");
}
}
}
});
}
private static void registerNewUser(
final Environment env,
final Store users,
final Store emails,
final String username,
final String email) {
env.executeInTransaction(
new TransactionalExecutable() {
@Override
public void execute(@NotNull final Transaction txn) {
final ArrayByteIterable usernameEntry = stringToEntry(username);
final ArrayByteIterable emailEntry = stringToEntry(email);
final boolean exists;
try (Cursor usersCursor = users.openCursor(txn)) {
exists = usersCursor.getSearchBoth(usernameEntry, emailEntry);
if (!exists) {
users.put(txn, usernameEntry, emailEntry);
}
}
if (!exists) {
try (Cursor emailsCursor = emails.openCursor(txn)) {
if (emailsCursor.getSearchBoth(emailEntry, usernameEntry)) {
throw new ExodusException("It can't be: users & emails are inconsistent!");
}
emails.put(txn, emailEntry, usernameEntry);
}
}
System.out.println(
(exists ? "User is already registered: " : "New user registered: ")
+ username
+ " "
+ email);
}
});
}