Hi guys,

To be able to present our users with relevant search results, we use a mixture of elaborate techniques. (yeah, right)

The most important ones are filtering by path and composition types. Using the builtin indexer, we have to create a big graph of compositions to find the inheriting nodeTypeAliases, and we have to search path by wildcard.

Instead of doing that we just analyze the path and composition instead. So we have this custom analyzer that delegates to this "ISearchDataGatherer":

public class PathAndCompositionSearchDataGatherer : ISearchDataGatherer
{
    private readonly Dictionary<int, IContentTypeComposition> contentTypes = new Dictionary<int, IContentTypeComposition>();

    public void GatherNodeData(IndexingNodeDataEventArgs e)
    {
        var pathAtt = e.Node.Attribute("path");
        var path = pathAtt != null ? pathAtt.Value : "";
        e.Fields.Add("analyzedPath", path.Replace(',', ' '));

        var contentTypeAtt = e.Node.Attribute("nodeType");
        var contentTypeId = contentTypeAtt != null ? Convert.ToInt32(contentTypeAtt.Value) : -1;
        var composition = "";
        if (contentTypeId > -1)
        {
            IContentTypeComposition contentType = contentTypes.ContainsKey(contentTypeId)
                ? contentTypes[contentTypeId]
                : null;
            if (contentType == null)
            {
                contentType =
                    (IContentTypeComposition)
                        ApplicationContext.Current.Services.ContentTypeService.GetContentType(contentTypeId) ??
                    (IContentTypeComposition)
                        ApplicationContext.Current.Services.ContentTypeService.GetMediaType(contentTypeId);
                contentTypes.Add(contentTypeId, contentType);
            }

            composition = String.Join(" ", contentType.CompositionAliases().Union(new[] {contentType.Alias}));
        }
        e.Fields.Add("analyzedComposition", composition);
    }
}

Is this be something that would be worth pulling into the UmbracoContentIndexer?

I'll make the PR, just want to know if it's useful enough in the core.