Transactions
All table operations in GridGain 9 are transactional. You can provide an explicit transaction as a first argument of any Table and SQL API call. If you do not provide an explicit transaction, an implicit one will be created for every call.
Here is how you can provide a transaction explicitly:
KeyValueView<Long, Account> accounts =
table.keyValueView(Mapper.of(Long.class), Mapper.of(Account.class));
accounts.put(null, 42, new Account(16_000));
var tx = client.transactions().begin();
Account account = accounts.get(tx, 42);
account.balance += 500;
accounts.put(tx, 42, account);
assert accounts.get(tx, 42).balance == 16_500;
tx.rollback();
assert accounts.get(tx, 42).balance == 16_000;var accounts = table.GetKeyValueView<long, Account>();
await accounts.PutAsync(transaction: null, 42, new Account(16_000));
await using ITransaction tx = await client.Transactions.BeginAsync();
(Account account, bool hasValue) = await accounts.GetAsync(tx, 42);
account = account with { Balance = account.Balance + 500 };
await accounts.PutAsync(tx, 42, account);
Debug.Assert((await accounts.GetAsync(tx, 42)).Value.Balance == 16_500);
await tx.RollbackAsync();
Debug.Assert((await accounts.GetAsync(null, 42)).Value.Balance == 16_000);
public record Account(decimal Balance);auto accounts = table.get_key_value_view<account, account>();
account init_value(42, 16'000);
accounts.put(nullptr, {42}, init_value);
auto tx = client.get_transactions().begin();
std::optional<account> res_account = accounts.get(&tx, {42});
res_account->balance += 500;
accounts.put(&tx, {42}, res_account);
assert(accounts.get(&tx, {42})->balance == 16'500);
tx.rollback();
assert(accounts.get(&tx, {42})->balance == 16'000);© 2024 GridGain Systems, Inc. All Rights Reserved. Privacy Policy | Legal Notices. GridGain® is a registered trademark of GridGain Systems, Inc.
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