//get the next filter that will match.
public RoundRobinMessageFilter GetNext()
{
this.EnsureEnumerator();
RoundRobinMessageFilter next = (RoundRobinMessageFilter)this.currentPosition.Current;
this.AdvanceEnumerator();
return(next);
}
//add another filter to the internal message filter table
internal void AddFilter(RoundRobinMessageFilter filter)
{
if (this.currentPosition != null)
{
throw new InvalidOperationException("Cannot add while enumerating");
}
this.filters.Add(filter);
filter.SetGroup(this);
}
//when asked for a match, see if the enumerator is pointing at
//this filter. If it is, return that this filter matched (true)
//otherwise, return false
public bool Match(RoundRobinMessageFilter filter)
{
this.EnsureEnumerator();
RoundRobinMessageFilter currentFilter = (RoundRobinMessageFilter)this.currentPosition.Current;
bool matched = Object.ReferenceEquals(currentFilter, filter);
if (matched)
{
this.AdvanceEnumerator();
}
return(matched);
}
//add a message filter to the MessageFilterTable
public void Add(MessageFilter key, TFilterData value)
{
RoundRobinMessageFilter filter = (RoundRobinMessageFilter)key;
RoundRobinGroup group;
if (!this.groups.TryGetValue(filter.groupName, out group))
{
group = new RoundRobinGroup(filter.groupName);
this.groups.Add(filter.groupName, group);
}
group.AddFilter(filter);
this.filters.Add(key, value);
}
public bool GetMatchingValues(Message message, ICollection <TFilterData> results)
{
bool foundSome = false;
foreach (RoundRobinGroup group in this.groups.Values)
{
RoundRobinMessageFilter matchingFilter = group.GetNext();
results.Add(this.filters[matchingFilter]);
foundSome = true;
}
return(foundSome);
}
//handle both the message and message buffer calls that can come into a MessageFilterTable
public bool GetMatchingFilters(MessageBuffer messageBuffer, ICollection <MessageFilter> results)
{
bool foundSome = false;
foreach (RoundRobinGroup group in this.groups.Values)
{
RoundRobinMessageFilter matchingFilter = group.GetNext();
results.Add(matchingFilter);
foundSome = true;
}
return(foundSome);
}
