private void invokeCallbacks(Callback<Void>[] callbacks, Throwable e) {
for (Callback<Void> callback : callbacks) {
try {
callback.onDone(null, e);
} catch (Throwable e2) {
Log.error("Transaction callback error", e2);
}
}
}
/**
* ACID transactional semantics:<br>
* - Atomicity with automatic rollback in case of exception,<br>
* - Consistency - only with constraints enforced programmatically inside transaction,<br>
* - Isolation is serializable (with global lock),<br>
* - Durability through on-commit callbacks.<br>
*/
public void transaction(Runnable transaction, boolean readOnly, Callback<Void> txCallback) {
globalLock();
data.txIdCounter.set(data.ids.get());
data.txChanges.clear();
data.txInsertions.clear();
data.txReadonly.set(readOnly);
data.insideTx.set(true);
boolean success = false;
try {
transaction.run();
success = true;
} catch (Throwable e) {
if (SuccessException.isSuccess(e)) {
success = true;
throw U.rte(e);
} else {
Log.error("Error in transaction, rolling back", e);
txRollback();
if (txCallback != null) {
txCallback.onDone(null, e);
txCallback = null;
}
}
} finally {
data.txChanges.clear();
data.txInsertions.clear();
data.insideTx.set(false);
if (persistor != null) {
if (success && txCallback != null) {
data.txCallbacks.add(txCallback);
}
} else {
if (success && txCallback != null) {
txCallback.onDone(null, null);
}
}
globalUnlock();
}
}
