/// <summary>
/// Base class for implementing a Node to include into a Graph.
/// </summary>
/// <param name="graphFilter">The graph that holds this node.</param>
/// <param name="parent">The parent node of this node. Set to null if this is the root node.</param>
public Node(Graph graphFilter, Node parent)
{
_children = new List<Node>();
_graphFilter = graphFilter;
_parent = parent;
_duration = TimeSpan.Zero;
}
/// <summary>
/// Node that executes a certain filter.
/// </summary>
/// <param name="graphFilter">The graph that holds this node.</param>
/// <param name="filter">The filter to execute.</param>
/// <param name="configs">The configurations of the filter to execute.</param>
/// <param name="measures">The measures to calculate.</param>
public NodeFilter(
Graph graphFilter, Node parent, Filter filter,
SortedDictionary<string, object> configs,
List<MetricExecBase> measures)
: base(graphFilter, parent)
{
this.filter = filter;
this.configs = configs;
this.measures = measures;
}
/// <summary>
/// Provides a representation of a graph-like structure for representing
/// the execution of interdependent filters.
/// </summary>
/// <param name="batchFilter">The parent BatchFilter that holds this graph.</param>
/// <param name="relations">List of relations between nodes.</param>
/// <param name="filters">List of filters.</param>
public Graph(
BatchFilter batchFilter,
List<RowNodeRelation> relations,
List<RowBatchFilter> filters)
{
_batchFilter = batchFilter;
// Create root node, dependent of the input images associated with the BatchFilter ...
_root = new Node(this, null);
MakeGraph(Guid.Empty, _root, relations, filters);
}
/// <summary>
/// Builds the graph of nodes from a list of node relations and a list of filters.
/// After building the currentNode, it will build the countChilds of this node, using the
/// relations list as a reference.
/// </summary>
/// <param name="currentGuid">The Guid of the node begin created.</param>
/// <param name="currentNode">The node being created.</param>
/// <param name="relations">List of relations between nodes.</param>
/// <param name="filters">List of filters.</param>
private void MakeGraph(
Guid currentGuid, Node currentNode,
List<RowNodeRelation> relations,
List<RowBatchFilter> filters)
{
SortedDictionary<string, object> configs;
Filter filter; Node filter_f;
List<MetricExecBase> metrics;
IEnumerable<RowBatchFilter> sons =
from a in filters
join r in relations on a.Item5 equals r.Item2
where r.Item1 == currentGuid
select a;
// --
foreach (RowBatchFilter r in sons)
{
configs = r.Item2; filter = r.Item3; metrics = r.Item4;
filter_f = (Node)new NodeFilter(this, currentNode, filter, configs, metrics);
filter_f.FilterExecuted += new Node.FilterExecutedDelegate(filter_f_FilterExecuted);
filter_f.FilterMeasured += new Node.FilterMeasuredDelegate(filter_f_FilterMeasured);
currentNode.Children.Add(filter_f);
MakeGraph(r.Item5, filter_f, relations, filters);
}
}
