/// <summary>
/// Set the supplied examine indexers (this may be called by the consumer to specify the Examine indexes to hook into)
/// </summary>
/// <param name="examineIndexers">names of Examine indexers to hook into (null or empty array = none)</param>
internal static void SetExamineIndexers(string[] examineIndexerNames)
{
LookService.Instance._examineIndexersConfigured = true; // set flag so that hook indexing startup event doens't reset any conumser set configuration
// all examine indexers that should be hooked into (string key = indexer name)
var examineIndexers = new Dictionary <string, BaseUmbracoIndexer>(); // default to empty - ie, no examine indexers to hook into
if (examineIndexerNames != null && examineIndexerNames.Any())
{
// we (might) have indexers to hook into
examineIndexers = ExamineManager
.Instance
.IndexProviderCollection
.Select(x => x as BaseUmbracoIndexer) // UmbracoContentIndexer, UmbracoMemberIndexer
.Where(x => x != null)
.Where(x => examineIndexerNames.Contains(x.Name))
.ToDictionary(x => x.Name, x => x);
}
// if there are indexers already registered, remove those that are not in the collection
var removeEvents = LookService
.Instance
._examineDocumentWritingEvents
.Where(x => !examineIndexers.ContainsKey(x.Key))
.ToDictionary(x => x.Key, x => x.Value);
foreach (var removeEvent in removeEvents)
{
var indexer = ExamineManager.Instance.IndexProviderCollection[removeEvent.Key] as BaseUmbracoIndexer;
indexer.DocumentWriting -= removeEvent.Value;
LookService.Instance._examineDocumentWritingEvents.Remove(removeEvent.Key);
}
// add events if not already registered
foreach (var examineIndexer in examineIndexers)
{
if (!LookService.Instance._examineDocumentWritingEvents.ContainsKey(examineIndexer.Key))
{
EventHandler <DocumentWritingEventArgs> addEvent = (sender, e) => LookService.DocumentWriting(sender, e, examineIndexer.Key);
LookService.Instance._examineDocumentWritingEvents[examineIndexer.Key] = addEvent;
examineIndexers[examineIndexer.Key].DocumentWriting += addEvent;
}
LogHelper.Info(typeof(LookService), $"Hooking into Examine indexer '{ examineIndexer.Key }'");
}
}