Merge pull request #60 from skolmer/generics

Added support for generic filter and sort methods

SieveUnitTests/Entities/BaseEntity.cs

@@ -0,0 +1,13 @@
+using System;
+using Sieve.Attributes;
+
+namespace SieveUnitTests.Entities
+{
+	public class BaseEntity
+    {
+        public int Id { get; set; }
+
+        [Sieve(CanFilter = true, CanSort = true)]
+        public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;
+    }
+}

SieveUnitTests/Entities/Comment.cs

@@ -3,13 +3,8 @@ using Sieve.Attributes;
 
 namespace SieveUnitTests.Entities
 {
-	public class Comment
+	public class Comment : BaseEntity
     {
-        public int Id { get; set; }
-
-        [Sieve(CanFilter = true, CanSort = true)]
-        public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;
-
         [Sieve(CanFilter = true)]
         public string Text { get; set; }
     }

SieveUnitTests/Entities/Post.cs

@@ -3,9 +3,8 @@ using Sieve.Attributes;
 
 namespace SieveUnitTests.Entities
 {
-	public class Post
+	public class Post : BaseEntity
     {
-        public int Id { get; set; }
 
         [Sieve(CanFilter = true, CanSort = true)]
         public string Title { get; set; } = Guid.NewGuid().ToString().Replace("-", string.Empty).Substring(0, 8);
@@ -16,9 +15,6 @@ namespace SieveUnitTests.Entities
         [Sieve(CanFilter = true, CanSort = true)]
         public int CommentCount { get; set; } = new Random().Next(0, 1000);
 
-        [Sieve(CanFilter = true, CanSort = true)]
-        public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;
-
         [Sieve(CanFilter = true, CanSort = true)]
         public int? CategoryId { get; set; } = new Random().Next(0, 4);
 

SieveUnitTests/General.cs

@@ -207,6 +207,20 @@ namespace SieveUnitTests
             Assert.IsTrue(result.Count() == 3);
         }
 
+        [TestMethod]
+        public void CustomGenericFiltersWork()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "Latest",
+            };
+
+            var result = _processor.Apply(model, _comments);
+
+            Assert.IsFalse(result.Any(p => p.Id == 0));
+            Assert.IsTrue(result.Count() == 2);
+        }
+
         [TestMethod]
         public void CustomFiltersWithOperatorsWork()
         {
@@ -286,6 +300,19 @@ namespace SieveUnitTests
             Assert.IsFalse(result.First().Id == 0);
         }
 
+        [TestMethod]
+        public void CustomGenericSortsWork()
+        {
+            var model = new SieveModel()
+            {
+                Sorts = "Oldest",
+            };
+
+            var result = _processor.Apply(model, _posts);
+
+            Assert.IsTrue(result.Last().Id == 0);
+        }
+
         [TestMethod]
         public void MethodNotFoundExceptionWork()
         {

SieveUnitTests/Services/SieveCustomFilterMethods.cs

@@ -32,5 +32,11 @@ namespace SieveUnitTests.Services
         {
             return source;
         }
+
+        public IQueryable<T> Latest<T>(IQueryable<T> source, string op, string[] values) where T : BaseEntity
+        {
+            var result = source.Where(c => c.DateCreated > DateTimeOffset.UtcNow.AddDays(-14));
+            return result;
+        }
     }
 }

SieveUnitTests/Services/SieveCustomSortMethods.cs

@@ -16,5 +16,14 @@ namespace SieveUnitTests.Services
 
             return result;
         }
+
+        public IQueryable<T> Oldest<T>(IQueryable<T> source, bool useThenBy, bool desc) where T : BaseEntity
+        {
+            var result = useThenBy ?
+                ((IOrderedQueryable<T>)source).ThenByDescending(p => p.DateCreated) :
+                source.OrderByDescending(p => p.DateCreated);
+
+            return result;
+        }
     }
 }