@Override
public <T> DbSessionFuture<T> executeQuery(
String sql, ResultHandler<T> eventHandler, T accumulator) {
checkClosed();
return (DbSessionFuture)
queRequest(MySqlRequests.executeQuery(sql, eventHandler, accumulator, this)).getFuture();
}
@Override
public void beginTransaction() {
if (isInTransaction()) {
throw new DbException("This connection is already in a transaction");
}
checkClosed();
synchronized (lock) {
forceQueRequest(MySqlRequests.beginTransaction(this));
isInTransaction = true;
}
}
@Override
public DbSessionFuture<Void> rollback() {
if (!isInTransaction()) {
throw new DbException("No transaction has been started to rollback");
}
checkClosed();
synchronized (lock) {
final MySqlRequest request = queRequest(MySqlRequests.rollbackTransaction(this));
isInTransaction = false;
return (DbSessionFuture<Void>) request.getFuture();
}
}
@Override
public DbFuture<Void> close(CloseMode closeMode) throws DbException {
synchronized (lock) {
if (null == closeFuture) {
final MySqlRequest closeRequest = MySqlRequests.createCloseRequest(this);
closeFuture = closeRequest.getFuture();
closeFuture.addListener(
new DbListener<Void>() {
@Override
public void onCompletion(DbFuture<Void> future) {
MySqlConnection.this.connectionManager.removeConnection(MySqlConnection.this);
}
});
if (closeMode == CloseMode.CANCEL_PENDING_OPERATIONS) {
forceCloseOnPendingRequests();
}
forceQueRequest(closeRequest);
return closeFuture;
} else {
return closeFuture;
}
}
}
@Override
public DbSessionFuture<PreparedUpdate> prepareUpdate(String sql) {
checkClosed();
return (DbSessionFuture) queRequest(MySqlRequests.prepareQuery(sql, this)).getFuture();
}
@Override
public DbSessionFuture<Result> executeUpdate(String sql) {
checkClosed();
return (DbSessionFuture) queRequest(MySqlRequests.executeUpdate(sql, this)).getFuture();
}