protected TransactionRunner(GetOrCreateTransactionResult result) {
txn = result.getTransaction();
finishTxn = result.isNew();
if (txn == null && finishTxn) {
throw new IllegalArgumentException(
"Cannot have a null txn when finishTxn is true. This "
+ "almost certainly represents a programming error on the part of the App Engine team. "
+ "Please report this via standard support channels and accept our humblest apologies.");
}
TransactionImpl.ensureTxnActive(txn);
}
