server/biz/SearchTranslationWordBreakDataCache.cs

@@ -0,0 +1,77 @@
+using System.Linq;
+using System.Threading.Tasks;
+using System.Threading;
+using System.Collections.Generic;
+using Sockeye.Util;
+using Sockeye.Models;
+namespace Sockeye.Biz
+{
+
+    public class SearchTranslationWordBreakDataCache
+    {
+        static SemaphoreSlim semaphoreSlim = new SemaphoreSlim(1, 1);
+        private static Dictionary<long, TranslationWordBreakingData> theCache = new Dictionary<long, TranslationWordBreakingData>();
+        public SearchTranslationWordBreakDataCache() { }
+        public static async Task<TranslationWordBreakingData> GetWordBreakData(long id)
+        {
+            await semaphoreSlim.WaitAsync();
+            try
+            {
+                if (!theCache.ContainsKey(id))
+                    theCache.Add(id, await GetTranslationSearchDataAsync(id));
+                return theCache.First(z=>z.Key==id).Value;
+            }
+            finally
+            {
+                semaphoreSlim.Release();
+            }
+        }
+
+
+
+        internal static async Task<TranslationWordBreakingData> GetTranslationSearchDataAsync(long translationId)
+        {
+            TranslationWordBreakingData LSD = new TranslationWordBreakingData();
+            using (AyContext ct = ServiceProviderProvider.DBContext)
+            {
+                //Get stopwords
+                //Validate translation id, if not right then use default instead 
+                var Param = new List<string>();
+                translationId = await TranslationBiz.ReturnSpecifiedTranslationIdIfExistsOrDefaultTranslationId(translationId, ct);
+                Param.Add("StopWords1");
+                Param.Add("StopWords2");
+                Param.Add("StopWords3");
+                Param.Add("StopWords4");
+                Param.Add("StopWords5");
+                Param.Add("StopWords6");
+                Param.Add("StopWords7");
+                var Stops = await TranslationBiz.GetSubsetStaticAsync(Param, translationId);
+
+                foreach (KeyValuePair<string, string> kvp in Stops)
+                {
+                    //Each stopwords translation key is a space delimited list of words and in the case of an empty local string (i.e. StopWords7) it's value is a single question mark
+                    if (kvp.Value != "?")
+                    {
+                        LSD.StopWords.AddRange(kvp.Value.Split(" "));
+                    }
+                }
+
+                LSD.CJKIndex = await TranslationBiz.GetCJKIndexAsync(translationId, ct);
+            }
+            return LSD;
+        }
+
+        //Class to hold relevant translation data for breaking text
+        public class TranslationWordBreakingData
+        {
+            public bool CJKIndex { get; set; }
+            public List<string> StopWords { get; set; }
+            public TranslationWordBreakingData()
+            {
+                CJKIndex = false;
+                StopWords = new List<string>();
+            }
+        }
+
+    }//eoc
+}//eons