1.2.7

Esiur/Core/AsyncBag.cs

@@ -0,0 +1,99 @@
+/*
+ 
+Copyright (c) 2017 Ahmed Kh. Zamil
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
+*/
+
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace Esiur.Core
+{
+    public class AsyncBag<T>: AsyncReply<T[]>
+    {
+        //Dictionary<AsyncReply, T> results = new Dictionary<AsyncReply, T>();
+
+        List<IAsyncReply<T>> replies = new List<IAsyncReply<T>>();
+        List<T> results = new List<T>();
+
+        int count = 0;
+        bool sealedBag = false;
+
+        /*
+        public AsyncBag<T> Then(Action<T[]> callback)
+        {
+            base.Then(new Action<object>(o => callback((T[])o)));
+            return this;
+        }
+        */
+
+        public void Seal()
+        {
+            if (sealedBag)
+                return;
+
+            sealedBag = true;
+
+            if (results.Count == 0)
+                Trigger(new T[0]);
+
+            for (var i = 0; i < results.Count; i++)
+            //foreach(var reply in results.Keys)
+            {
+                var k = replies[i];// results.Keys.ElementAt(i);
+                var index = i;
+
+                k.Then((r) =>
+                {
+                    results[index] = (T)r;
+                    count++;
+                    if (count == results.Count)
+                        Trigger(results.ToArray());
+                });
+            }
+        }
+
+        public void Add(IAsyncReply<T> reply)
+        {
+            if (!sealedBag)
+            {
+                results.Add(default(T));
+                replies.Add(reply);
+            }
+                //results.Add(reply, default(T));            
+        }
+
+        public void AddBag(AsyncBag<T> bag)
+        {
+            foreach (var r in bag.replies)
+                Add(r);
+        }
+
+        public AsyncBag()
+        {
+
+        }
+
+    }
+}