/**
* Run the specified code inside a single transaction, with the contained code returning a value
* of the parameter type A.
*
* <p>In most cases this is not needed, because the primitives always create their own transaction
* automatically, but it is needed in some circumstances.
*/
public static <A> A run(Lambda0<A> code) {
synchronized (transactionLock) {
// If we are already inside a transaction (which must be on the same
// thread otherwise we wouldn't have acquired transactionLock), then
// keep using that same transaction.
Transaction transWas = currentTransaction;
try {
startIfNecessary();
return code.apply();
} finally {
if (transWas == null) currentTransaction.close();
currentTransaction = transWas;
}
}
}
static void run(Handler<Transaction> code) {
synchronized (transactionLock) {
// If we are already inside a transaction (which must be on the same
// thread otherwise we wouldn't have acquired transactionLock), then
// keep using that same transaction.
Transaction transWas = currentTransaction;
try {
startIfNecessary();
code.run(currentTransaction);
} finally {
if (transWas == null) currentTransaction.close();
currentTransaction = transWas;
}
}
}