Add method to replace in sqlite (#190)

src/Speckle.Sdk/SQLite/SQLiteJsonCacheManager.cs

@@ -96,6 +96,7 @@ public class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
     return null; // pass on the duty of null checks to consumers
   }
 
+  //This does an insert or ignores if already exists
   public void SaveObject(string id, string json)
   {
     using var c = new SqliteConnection(_connectionString);
@@ -108,6 +109,18 @@ public class SqLiteJsonCacheManager : ISqLiteJsonCacheManager
     command.ExecuteNonQuery();
   }
 
+  //This does an insert or replaces if already exists
+  public void UpdateObject(string id, string json)
+  {
+    using var c = new SqliteConnection(_connectionString);
+    c.Open();
+    const string COMMAND_TEXT = "REPLACE INTO objects(hash, content) VALUES(@hash, @content)";
+    using var command = new SqliteCommand(COMMAND_TEXT, c);
+    command.Parameters.AddWithValue("@hash", id);
+    command.Parameters.AddWithValue("@content", json);
+    command.ExecuteNonQuery();
+  }
+
   public void SaveObjects(IEnumerable<(string id, string json)> items)
   {
     using var c = new SqliteConnection(_connectionString);

src/Speckle.Sdk/Serialisation/V2/DummySendServerObjectManager.cs

@@ -15,6 +15,8 @@ public class DummySqLiteJsonCacheManager : ISqLiteJsonCacheManager
 
   public void SaveObject(string id, string json) => throw new NotImplementedException();
 
+  public void UpdateObject(string id, string json) => throw new NotImplementedException();
+
   public void SaveObjects(IEnumerable<(string id, string json)> items) => throw new NotImplementedException();
 
   public bool HasObject(string objectId) => throw new NotImplementedException();