public async Task IndexPageItemsAsync(IEnumerable <IndexingQueueItem> queueItems)
{
var groupedByLanguage = queueItems
.Where(i => !i.Equals(IndexingQueueItem.Empty))
.GroupBy(i => i.Language)
.Where(grouping => !string.IsNullOrWhiteSpace(grouping.Key));
foreach (IGrouping <string, IndexingQueueItem> grouping in groupedByLanguage)
{
Index index = this.Client.InitIndex(this.GetPagesIndexName(grouping.Key));
Language language = Language.Parse(grouping.Key);
List <JObject> objectsToUpdate = new List <JObject>();
List <string> objectsToDelete = new List <string>();
foreach (IndexingQueueItem indexingQueueItem in grouping)
{
if (indexingQueueItem.Deleted)
{
objectsToDelete.Add(this.crawler.GetObjectId(indexingQueueItem.Id));
}
else
{
Item item = this.database.GetItem(ID.Parse(indexingQueueItem.Id), language);
if (item != null && item.Versions.Count > 0)
{
objectsToUpdate.Add(this.crawler.GetJsonForItem(item));
}
}
}
await index.AddObjectsAsync(objectsToUpdate);
await index.DeleteObjectsAsync(objectsToDelete);
}
}