Allow StoreAsHash behavior to be overridden

Author: mythz

src/ServiceStack.Redis/RedisClient.cs

@@ -42,6 +42,9 @@ public RedisClient()
 
         public static Func<RedisClient> NewFactoryFn = () => new RedisClient();
 
+        public static Func<object, Dictionary<string, string>> ConvertToHashFn =
+            x => x.ToJson().FromJson<Dictionary<string, string>>();
+
         /// <summary>
         /// Creates a new instance of the Redis Client from NewFactoryFn. 
         /// </summary>
@@ -736,7 +739,8 @@ public T GetFromHash<T>(object id)
         public void StoreAsHash<T>(T entity)
         {
             var key = UrnKey(entity);
-            SetRangeInHash(key, entity.ToJson().FromJson<Dictionary<string, string>>());
+            var hash = ConvertToHashFn(entity);
+            SetRangeInHash(key, hash);
             RegisterTypeId(entity);
         }
 

tests/ServiceStack.Redis.Tests/RedisClientHashTests.cs

@@ -2,6 +2,9 @@
 using System.Collections.Generic;
 using NUnit.Framework;
 using ServiceStack.Common;
+using ServiceStack.Common.Tests.Models;
+using ServiceStack.Redis.Tests.Generic;
+using ServiceStack.Text;
 
 namespace ServiceStack.Redis.Tests
 {
@@ -268,6 +271,35 @@ public void Can_hash_multi_set_and_get()
             }
         }
 
-	}
+        public class HashTest
+        {
+            public int Id { get; set; }
+            public string Name { get; set; }
+        }
+
+        [Test]
+	    public void Can_store_as_Hash()
+	    {
+            var dto = new HashTest { Id = 1 };
+            Redis.StoreAsHash(dto);
+
+            var storedHash = Redis.GetHashKeys(dto.ToUrn());
+            Assert.That(storedHash, Is.EquivalentTo(new[] { "Id" }));
+
+            var hold = RedisClient.ConvertToHashFn;
+            RedisClient.ConvertToHashFn = o =>
+            {
+                var map = new Dictionary<string, string>();
+                o.ToObjectDictionary().Each(x => map[x.Key] = (x.Value ?? "").ToJsv());
+                return map;
+            };
+
+            Redis.StoreAsHash(dto);
+            storedHash = Redis.GetHashKeys(dto.ToUrn());
+            Assert.That(storedHash, Is.EquivalentTo(new[] { "Id", "Name" }));
+
+            RedisClient.ConvertToHashFn = hold;
+	    }
+    }
 
 }