public int Next(int sequence, int step)
{
if (step < MIN_STEP || step > MAX_STEP)
{
throw new ArgumentOutOfRangeException("step", step,
string.Format("should less between {0} and {1}.",
MIN_STEP, MAX_STEP));
}
SequenceRange range;
if (!cache.TryGetValue(sequence, out range))
{
lock (LockObject)
{
if (!cache.TryGetValue(sequence, out range))
{
range = new SequenceRange(sequence);
cache[sequence] = range;
}
}
}
return range.Next(step, this.SequenceRepository);
}
public int Next(int sequence, int step = 1)
{
if (step < MIN_STEP || step > MAX_STEP)
{
throw new ArgumentOutOfRangeException("step", step,
string.Format("should less between {0} and {1}.",
MIN_STEP, MAX_STEP));
}
SequenceRange range;
if (!cache.TryGetValue(sequence, out range))
{
lock (LockObject)
{
if (!cache.TryGetValue(sequence, out range))
{
range = new SequenceRange(sequence);
cache[sequence] = range;
}
}
}
return(range.Next(step, this.SequenceRepository));
}