fix some routing problems

zero.Core/Routing/ZeroRouteProvider.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Linq;
 using System.Threading.Tasks;
 using zero.Core.Entities;
+using zero.Core.Extensions;
 
 namespace zero.Core.Routing
 {
@@ -42,6 +43,27 @@ namespace zero.Core.Routing
 
     /// <inheritdoc />
     public sealed override Task<Route> Find(RoutingContext context, IZeroRouteEntity model) => Find(context, (T)model);
+
+    /// <inheritdoc />
+    public virtual async Task<Dictionary<T, Route>> Find(RoutingContext context, params T[] models)
+    {
+      Dictionary<string, T> idMap = models.ToDistinctDictionary(x => Id(x), x => x);
+      Dictionary<string, Route> routes = await context.Session.LoadAsync<Route>(idMap.Select(x => x.Key));
+      Dictionary<T, Route> result = new();
+
+      foreach ((string id, T model) in idMap)
+      {
+        result.Add(model, routes.GetValueOrDefault(id));
+      }
+
+      return result;
+    }
+
+    /// <inheritdoc />
+    public sealed override async Task<Dictionary<IZeroRouteEntity, Route>> Find(RoutingContext context, params IZeroRouteEntity[] models)
+    {
+      return (await Find(context, models.Select(x => (T)x).ToArray())).ToDictionary(x => (IZeroRouteEntity)x.Key, x => x.Value);
+    }
   }
 
 
@@ -97,10 +119,23 @@ namespace zero.Core.Routing
       return context.Context.Options.Routing.DefaultEndpoint;
     }
 
-    /// <summary>
-    /// Find a persisted route for an entity
-    /// </summary>
+    /// <inheritdoc />
     public virtual async Task<Route> Find(RoutingContext context, IZeroRouteEntity model) => await context.Session.LoadAsync<Route>(Id(model));
+
+    /// <inheritdoc />
+    public virtual async Task<Dictionary<IZeroRouteEntity, Route>> Find(RoutingContext context, params IZeroRouteEntity[] models)
+    {
+      Dictionary<string, IZeroRouteEntity> idMap = models.ToDistinctDictionary(x => Id(x), x => x);
+      Dictionary<string, Route> routes = await context.Session.LoadAsync<Route>(idMap.Select(x => x.Key));
+      Dictionary<IZeroRouteEntity, Route> result = new();
+
+      foreach ((string id, IZeroRouteEntity model) in idMap)
+      {
+        result.Add(model, routes.GetValueOrDefault(id));
+      }
+
+      return result;
+    }
   }
 
 
@@ -186,6 +221,11 @@ namespace zero.Core.Routing
     /// Find a persisted route for an entity
     /// </summary>
     Task<Route> Find(RoutingContext context, IZeroRouteEntity model);
+
+    /// <summary>
+    /// Find persisted routes for entities
+    /// </summary>
+    Task<Dictionary<IZeroRouteEntity, Route>> Find(RoutingContext context, params IZeroRouteEntity[] models);
   }
 
 }