public static CWNode SearchNodes(this IEnumerable <CWNode> nodes, NodeSearchCriteria nodeSearchCriteria)
{
foreach (var cwNode in nodes)
{
var searchNodeResult = SearchNodes(cwNode, nodeSearchCriteria);
if (searchNodeResult != null)
{
return(searchNodeResult);
}
}
return(null);
}
/// <summary>
/// Finds a node in this CWNode and all of its child CWNodes that matches the specified <see cref="NodeSearchCriteria"/>. It will return the first Node that matches, and what consitutes "first" is undetermined.
/// </summary>
/// <param name="nodeSearchCriteria">The criteria. Null fields are ignored in searching. If multiple criteria are specified then the match returns the first node that matches any of them</param>
/// <returns>The found node, or <c>null</c> if none could be found</returns>
public static CWNode SearchNodes(this CWNode node, NodeSearchCriteria nodeSearchCriteria)
{
// test if our node matches the criteria
if (nodeSearchCriteria.NodeKey != null)
{
if (node.Key.Equals(nodeSearchCriteria.NodeKey, StringComparison.InvariantCultureIgnoreCase))
{
return(node);
}
}
if (nodeSearchCriteria.Value != null)
{
if (node.Values.Contains(nodeSearchCriteria.Value, StringComparer.InvariantCultureIgnoreCase))
{
return(node);
}
}
if (nodeSearchCriteria.KeyValue != null)
{
var criteriaKeyValue = nodeSearchCriteria.KeyValue.Value;
if (criteriaKeyValue.Key == null)
{
if (nodeSearchCriteria.SearchForKVPAgainstRawValues)
{
if (node.RawKeyValues.Any(kvp => kvp.Value.Equals(criteriaKeyValue.Value, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
if (nodeSearchCriteria.SearchForKVPAgainstSubstitutedValues)
{
if (node.KeyValues.Any(kvp => kvp.Value.Equals(criteriaKeyValue.Value, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
}
else if (criteriaKeyValue.Value == null)
{
if (nodeSearchCriteria.SearchForKVPAgainstRawValues)
{
if (node.RawKeyValues.Any(kvp => kvp.Key.Equals(criteriaKeyValue.Key, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
if (nodeSearchCriteria.SearchForKVPAgainstSubstitutedValues)
{
if (node.KeyValues.Any(kvp => kvp.Key.Equals(criteriaKeyValue.Key, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
}
else
{
if (nodeSearchCriteria.SearchForKVPAgainstRawValues)
{
if (node.RawKeyValues.Any(kvp => kvp.Equals(criteriaKeyValue, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
if (nodeSearchCriteria.SearchForKVPAgainstSubstitutedValues)
{
if (node.KeyValues.Cast <CWNodeContextedKeyValue>().Any(kvp => kvp.Equals(criteriaKeyValue, StringComparison.InvariantCultureIgnoreCase)))
{
return(node);
}
}
}
}
// otherwise DFS down the children
return(node.Nodes.Select(cwNode => cwNode.SearchNodes(nodeSearchCriteria)).FirstOrDefault(childResult => childResult != null));
}
