/// <summary> /// This method is called when a remote partial match has returned but /// there was no full match. /// </summary> /// <returns>true of there is a full match</returns> protected abstract bool FollowupOnRemoteNode(INode node, PatternNode patternNode, MatcherFunc next);
protected override bool FollowupOnRemoteNode(INode node, PatternNode patternNode, MatcherFunc next)
{
throw new NotSupportedException();
}
private bool TryMatchNodeWithNext <T>(INode node, PatternNode patternNode, Predicate <T> predicate, MatcherFunc next, IMatchEdge incomingEdge) where T : class, INode
{
var res = TryMatchNode(new MatchNodeArg <T>(node, patternNode, predicate, incomingEdge));
if (!res.IsMatched)
{
return(false);
}
// when already matched the whole subpattern, no need to look further
// this can happen if returning from a remote match
if (res.IsMatched && res.IsFullSubpatternMatched)
{
return(true);
}
bool isSubpatternMatch = false;
// patternNode.RemoteEdges is only populated when a
// remote node returns
foreach (var edge in node.Edges.Cast <IMatchEdge>())
{
INode neighbour = edge.GetOtherNode(node);
if (next(neighbour, edge))
{
isSubpatternMatch = true;
break;
}
}
// no match found in local partition -> check remotes as well
// but only if this is the initially started matching (not a remote one)
if (!isSubpatternMatch && !this.IsRemote)
{
isSubpatternMatch = FollowupOnRemoteNode(node, patternNode, next);
// when no match found clear the pattern node
if (!isSubpatternMatch)
{
patternNode.Reset();
}
}
return(isSubpatternMatch);
}
protected override bool FollowupOnRemoteNode(INode node, PatternNode patternNode, MatcherFunc next)
{
System.Diagnostics.Debug.Assert(node.Id.Equals(patternNode.MatchedNode.Id));
foreach (var edge in patternNode.RemoteEdges)
{
INode n = edge.GetOtherNode(patternNode.MatchedNode);
// do not double check nodes!
if (!model.HasNode(n) && next(n, edge))
{
logger.Trace("Matched node/subpattern in a third partition!");
return(true);
}
}
return(false);
}
