public static int GetNextUniqueValue(IDataLayer dataLayer, string sequencePrefix)
{
if (dataLayer == null)
{
throw new ArgumentNullException("dataLayer");
}
string realSeqPrefix = sequencePrefix + '@' + GetSequencePrefix(dataLayer);
return(XpoSequencer.GetNextValue(dataLayer, realSeqPrefix));
}
public static int GetNextValue(IDataLayer dataLayer, string sequencePrefix)
{
if (dataLayer == null)
{
throw new ArgumentNullException("dataLayer");
}
if (sequencePrefix == null)
{
sequencePrefix = string.Empty;
}
int attempt = 1;
while (true)
{
try {
using (Session generatorSession = new Session(dataLayer)) {
XpoSequencer generator = generatorSession.FindObject <XpoSequencer>(new OperandProperty("SequencePrefix") == sequencePrefix);
if (generator == null)
{
generator = new XpoSequencer(generatorSession);
generator.SequencePrefix = sequencePrefix;
}
generator.Counter++;
generator.Save();
return(generator.Counter);
}
}
catch (LockingException) {
if (attempt >= MaxIdGenerationAttempts)
{
throw;
}
}
if (attempt > MaxIdGenerationAttempts / 2)
{
Thread.Sleep(new Random().Next(MinConflictDelay, MaxConflictDelay));
}
attempt++;
}
}
