public void Transaction(
string name,
TimeSpan delayBeforeRetry,
int maxRetries,
TransactionRetryType retryType,
TransactionFunction preMulti,
TransactionFunction postMulti
)
{
Random r = null;
int tryCount = 0;
while (true)
{
preMulti();
RedisCommand("MULTI");
postMulti();
var result = RedisCommand <List <string> >("EXEC");
if (result != null)
{
break;
}
tryCount += 1;
if (tryCount > maxRetries)
{
throw new NhiredisException("Transaction failed: " + name);
}
if (retryType == TransactionRetryType.Predictable)
{
Thread.Sleep(delayBeforeRetry);
}
else
{
if (r == null)
{
r = new Random(DateTime.Now.Millisecond);
}
double maxDelay = delayBeforeRetry.TotalMilliseconds;
double delay = maxDelay * (r.NextDouble() * 0.9 + 0.1);
Thread.Sleep(TimeSpan.FromMilliseconds(delay));
}
}
}
public void Transaction(
string name,
TimeSpan delayBeforeRetry,
int maxRetries,
TransactionRetryType retryType,
TransactionFunction preMulti,
TransactionFunction postMulti
)
{
Random r = null;
int tryCount = 0;
while (true)
{
preMulti();
RedisCommand("MULTI");
postMulti();
var result = RedisCommand<List<string>>("EXEC");
if (result != null)
{
break;
}
tryCount += 1;
if (tryCount > maxRetries)
{
throw new NhiredisException("Transaction failed: " + name);
}
if (retryType == TransactionRetryType.Predictable)
{
Thread.Sleep(delayBeforeRetry);
}
else
{
if (r == null)
{
r = new Random(DateTime.Now.Millisecond);
}
double maxDelay = delayBeforeRetry.TotalMilliseconds;
double delay = maxDelay * (r.NextDouble() * 0.9 + 0.1);
Thread.Sleep(TimeSpan.FromMilliseconds(delay));
}
}
}
// #end example
// #example: The write transaction method
public T InReadTransaction <T>(TransactionFunction <T> transactionClosure)
{
transactionLock.EnterReadLock();
try
{
return(transactionClosure(database));
}
catch (Exception)
{
database.Rollback();
throw;
}
finally
{
database.Commit();
transactionLock.ExitReadLock();
}
}
// #example: A transaction method
public T InTransaction <T>(TransactionFunction <T> transactionClosure)
{
lock (transactionLock)
{
try
{
return(transactionClosure(database));
}
catch (Exception)
{
database.Rollback();
throw;
}
finally
{
database.Commit();
}
}
}
/// <summary>
/// Delete overdue books.
/// </summary>
public async void RunTransaction()
{
if (mCloudDBZone == null)
{
ShowResultPopup("Please open CloudDBZone first!");
return;
}
CloudDBZoneQuery query = CloudDBZoneQuery.Where(Java.Lang.Class.ForName("com.company.project.BookInfo")).
LessThan(BookEditFields.PublishTime, DateUtils.ParseDate("2020-12-04"));
Transaction.IFunction function = new TransactionFunction((transaction) => {
try
{
System.Collections.IList bookInfos = transaction.ExecuteQuery(query);
IList <CloudDBZoneObject> bookList = new List <CloudDBZoneObject>();
foreach (Java.Lang.Object item in bookInfos)
{
bookList.Add((CloudDBZoneObject)item);
}
transaction.ExecuteDelete(bookList);
}
catch (AGConnectCloudDBException e)
{
ShowResultPopup("Transaction.IFunction exception: " + e.ErrMsg);
}
});
try
{
await mCloudDBZone.RunTransactionAsync(function);
ShowResultPopup("RunTransaction executed successfully");
}
catch (Exception e)
{
ShowResultPopup("RunTransaction failed: " + e.Message);
}
}
public List <TransactionDTO> showTransaction()
{
var id = Helper.getCurrentUserId(Request.GetRequestContext());
return(TransactionFunction.showTransaction(id));
}
public bool CreatTransaction([FromUri] int supplyId, [FromUri] int demanedId)
{
var id = Helper.getCurrentUserId(Request.GetRequestContext());
return(TransactionFunction.CreatTransaction(supplyId, demanedId, id));
}