How to do the Batch Search ExecuteQueries in SharePoint 2013 using Client Side Object Model in C#

In one of the Older Article, we saw within a WebPart, how to execute the ExecuteQueries in a Server Side Coding. Now, I met with the same kind of requirement, but the difference is, here I am executing this search from a WebAPI. Already, we saw here how to create a basic WebAPI.

Let me share the piece of code, which is straight forward. Am not explaining this method as it is a Static and does not have any other external dependencies.

 private static List<DocTopic> GetTopicDocumentCountBatch(TermCollection docTopicsTermCollection, string locationTermID, ClientContext clientContext)
         {
 //The List of KeywordQuery which will be converted as an Array later
             List<KeywordQuery> keywordQueriesList = new List<KeywordQuery>();
 //The List of QueryID which will be converted as an Array later
             List<string> queryIdsList = new List<string>();
             string contentSiteURL = Convert.ToString(ConfigurationManager.AppSettings["ContentSiteURL"]);
             Dictionary<string, string> docTopicQueryID = new Dictionary<string, string>();
 
 //Framing the Queries
             foreach (Term docTopicTerm in docTopicsTermCollection)
             {
                 KeywordQuery keywordQuery = new KeywordQuery(clientContext);
                 keywordQuery.QueryText = string.Format("(IsDocument:True OR contentclass:STS_ListItem)  Tags:#0{0} GVIDoc:[{1}] SPSiteUrl:" + contentSiteURL + " (ContentTypeId:0x010100458DCE3990BC4C658D4AB1D0CA3B9782* OR ContentTypeId:0x0120D520A808* OR ContentType:GVIarticle)", locationTermID, docTopicTerm.Name); ;
                 keywordQuery.IgnoreSafeQueryPropertiesTemplateUrl = true;
                 keywordQuery.SelectProperties.Add("ContentType");
                 keywordQuery.SelectProperties.Add("ContentTypeId");
                 keywordQuery.SelectProperties.Add("GVIDoc");
                 keywordQuery.SourceId = Guid.NewGuid();
                 keywordQueriesList.Add(keywordQuery);
                 queryIdsList.Add(Convert.ToString(keywordQuery.SourceId));
                 docTopicQueryID.Add(Convert.ToString(keywordQuery.SourceId), docTopicTerm.Name);
             }
 //Convert the KeywordQuery and QueryID into array,
             KeywordQuery[] keywordQueries = keywordQueriesList.ToArray();
             string[] queryIds = queryIdsList.ToArray();
 //Initialize the SearchExecutor
             SearchExecutor searchExecutor = new SearchExecutor(clientContext);
 //Actual use of ExecuteQueries method
             var results = searchExecutor.ExecuteQueries(queryIds, keywordQueries, false);
             clientContext.ExecuteQuery();
 //Iterating the Result Set.
             List<DocTopic> docTopicsList = new List<DocTopic>();
            if (results.Value.Count > 0)
             {
                 foreach (var result in results.Value)
                 {
                     if (result.Value[0].ResultRows.Count() > 0)
                     {
                         DocTopic docTopic = new DocTopic();
 
                         docTopic.Title = Convert.ToString(docTopicQueryID[result.Key]);
                         docTopic.Url = "[" + docTopic.Title + "]";
                         docTopic.TotalCount = result.Value[0].ResultRows.Count();
                         docTopic.VideoCount = Convert.ToString(result.Value[0].ResultRows.SelectMany(m => m).Where(k => k.Key.Equals("ContentTypeId")).Select(m => m.Value).Where(y => y.ToString().Contains("0x0120D520A808")).Count());
                         docTopic.ArticleCount = Convert.ToString(result.Value[0].ResultRows.SelectMany(m => m).Where(k => k.Key.Equals("ContentType")).Select(m => m.Value).Where(y => y.ToString().Contains("GVIarticle")).Count());
                         docTopic.DocumentCount = Convert.ToString(result.Value[0].ResultRows.SelectMany(m => m).Where(k => k.Key.Equals("ContentTypeId")).Select(m => m.Value).Where(y => y.ToString().Contains("0x010100458DCE3990BC4C658D4AB1D0CA3B9782")).Count());
 
                         docTopicsList.Add(docTopic);
                     }
                 }
             }
             return docTopicsList;
 
         }
 

Happy Coding,

Sathish Nadarajan.