Added case-insensitive operators and started unit tests project

Sieve.sln

@@ -1,11 +1,13 @@
 
 Microsoft Visual Studio Solution File, Format Version 12.00
 # Visual Studio 15
-VisualStudioVersion = 15.0.27130.2010
+VisualStudioVersion = 15.0.27130.2027
 MinimumVisualStudioVersion = 10.0.40219.1
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Sieve", "Sieve\Sieve.csproj", "{B32B8B33-94B0-40E3-8FE5-D54602222717}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Sieve", "Sieve\Sieve.csproj", "{B32B8B33-94B0-40E3-8FE5-D54602222717}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SieveTests", "SieveTests\SieveTests.csproj", "{8043D264-42A0-4275-97A1-46400C02E37E}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "SieveTests", "SieveTests\SieveTests.csproj", "{8043D264-42A0-4275-97A1-46400C02E37E}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "SieveUnitTests", "SieveUnitTests\SieveUnitTests.csproj", "{21C3082D-F40E-457F-BE2E-AA099E19E199}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -21,6 +23,10 @@ Global
 		{8043D264-42A0-4275-97A1-46400C02E37E}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{8043D264-42A0-4275-97A1-46400C02E37E}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{8043D264-42A0-4275-97A1-46400C02E37E}.Release|Any CPU.Build.0 = Release|Any CPU
+		{21C3082D-F40E-457F-BE2E-AA099E19E199}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{21C3082D-F40E-457F-BE2E-AA099E19E199}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{21C3082D-F40E-457F-BE2E-AA099E19E199}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{21C3082D-F40E-457F-BE2E-AA099E19E199}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE

Sieve/Models/FilterOperator.cs

@@ -13,6 +13,6 @@ namespace Sieve.Models
         GreaterThanOrEqualTo,
         LessThanOrEqualTo,
         Contains,
-        StartsWith
+        StartsWith,
     }
 }

Sieve/Models/FilterTerm.cs

@@ -9,6 +9,9 @@ namespace Sieve.Models
     {
         private string _filter;
         private string[] operators = new string[] {
+                    "==*",
+                    "@=*",
+                    "_=*",
                     "==",
                     "!=",
                     ">",
@@ -16,7 +19,8 @@ namespace Sieve.Models
                     ">=",
                     "<=",
                     "@=",
-                    "_=" };
+                    "_="
+        };
 
         public FilterTerm(string filter)
         {
@@ -67,6 +71,7 @@ namespace Sieve.Models
                 switch (Operator.Trim().ToLower())
                 {
                     case "==":
+                    case "==*":
                         return FilterOperator.Equals;
                     case "!=":
                         return FilterOperator.NotEquals;
@@ -79,8 +84,10 @@ namespace Sieve.Models
                     case "<=":
                         return FilterOperator.LessThanOrEqualTo;
                     case "@=":
+                    case "@=*":
                         return FilterOperator.Contains;
                     case "_=":
+                    case "_=*":
                         return FilterOperator.StartsWith;
                     default:
                         return FilterOperator.Equals;

Sieve/Models/SieveOptions.cs

@@ -1,4 +1,5 @@
-using System;
+using Microsoft.Extensions.Options;
+using System;
 using System.Collections.Generic;
 using System.Text;
 

Sieve/Services/SieveProcessor.cs

@@ -49,6 +49,14 @@ namespace Sieve.Services
             _options = options;
         }
 
+        /// <summary>
+        /// Apply filtering, sorting, and pagination parameters found in `model` to `source`
+        /// </summary>
+        /// <typeparam name="TEntity"></typeparam>
+        /// <param name="model">An instance of ISieveModel</param>
+        /// <param name="source">Data source</param>
+        /// <param name="dataForCustomMethods">Additional data that will be passed down to custom methods</param>
+        /// <returns>Returns a transformed version of `source`</returns>
         public IQueryable<TEntity> ApplyAll<TEntity>(ISieveModel model, IQueryable<TEntity> source, object[] dataForCustomMethods = null)
         {
             var result = source;
@@ -68,36 +76,14 @@ namespace Sieve.Services
             return result;
         }
         
-        public IQueryable<TEntity> ApplySorting<TEntity>(ISieveModel model, IQueryable<TEntity> result, object[] dataForCustomMethods = null)
-        {
-            if (model?.SortsParsed == null)
-                return result;
-
-            var useThenBy = false;
-            foreach (var sortTerm in model.SortsParsed)
-            {
-                var property = GetSieveProperty<TEntity>(true, false, sortTerm.Name);
-
-                if (property != null)
-                {
-                    result = result.OrderByDynamic(property.Name, sortTerm.Descending, useThenBy);
-                }
-                else
-                {
-                    result = ApplyCustomMethod(result, sortTerm.Name, _customSortMethods,
-                        new object[]
-                        {
-                            result,
-                            useThenBy,
-                            sortTerm.Descending
-                        }, dataForCustomMethods);
-                }
-                useThenBy = true;
-            }
-
-            return result;
-        }
-        
+        /// <summary>
+        /// Apply filtering parameters found in `model` to `source`
+        /// </summary>
+        /// <typeparam name="TEntity"></typeparam>
+        /// <param name="model">An instance of ISieveModel</param>
+        /// <param name="source">Data source</param>
+        /// <param name="dataForCustomMethods">Additional data that will be passed down to custom methods</param>
+        /// <returns>Returns a transformed version of `source`</returns>
         public IQueryable<TEntity> ApplyFiltering<TEntity>(ISieveModel model, IQueryable<TEntity> result, object[] dataForCustomMethods = null)
         {
             if (model?.FiltersParsed == null)
@@ -112,12 +98,24 @@ namespace Sieve.Services
                     var converter = TypeDescriptor.GetConverter(property.PropertyType);
                     var parameter = Expression.Parameter(typeof(TEntity), "e");
 
-                    var filterValue = Expression.Constant(
+                    dynamic filterValue = Expression.Constant(
                         converter.CanConvertFrom(typeof(string)) ?
                         converter.ConvertFrom(filterTerm.Value) :
                         Convert.ChangeType(filterTerm.Value, property.PropertyType));
 
-                    var propertyValue = Expression.PropertyOrField(parameter, property.Name);
+
+                    dynamic propertyValue = Expression.PropertyOrField(parameter, property.Name);
+                    
+                    if (filterTerm.Operator.Contains("*"))
+                    {
+                        propertyValue = Expression.Call(propertyValue,
+                            typeof(string).GetMethods()
+                            .First(m => m.Name == "ToUpper" && m.GetParameters().Length == 0));
+
+                        filterValue = Expression.Call(filterValue,
+                            typeof(string).GetMethods()
+                            .First(m => m.Name == "ToUpper" && m.GetParameters().Length == 0));
+                    }
 
                     Expression comparison;
 
@@ -175,6 +173,52 @@ namespace Sieve.Services
             return result;
         }
 
+        /// <summary>
+        /// Apply sorting parameters found in `model` to `source`
+        /// </summary>
+        /// <typeparam name="TEntity"></typeparam>
+        /// <param name="model">An instance of ISieveModel</param>
+        /// <param name="source">Data source</param>
+        /// <param name="dataForCustomMethods">Additional data that will be passed down to custom methods</param>
+        /// <returns>Returns a transformed version of `source`</returns>
+        public IQueryable<TEntity> ApplySorting<TEntity>(ISieveModel model, IQueryable<TEntity> result, object[] dataForCustomMethods = null)
+        {
+            if (model?.SortsParsed == null)
+                return result;
+
+            var useThenBy = false;
+            foreach (var sortTerm in model.SortsParsed)
+            {
+                var property = GetSieveProperty<TEntity>(true, false, sortTerm.Name);
+
+                if (property != null)
+                {
+                    result = result.OrderByDynamic(property.Name, sortTerm.Descending, useThenBy);
+                }
+                else
+                {
+                    result = ApplyCustomMethod(result, sortTerm.Name, _customSortMethods,
+                        new object[]
+                        {
+                            result,
+                            useThenBy,
+                            sortTerm.Descending
+                        }, dataForCustomMethods);
+                }
+                useThenBy = true;
+            }
+
+            return result;
+        }
+
+        /// <summary>
+        /// Apply pagination parameters found in `model` to `source`
+        /// </summary>
+        /// <typeparam name="TEntity"></typeparam>
+        /// <param name="model">An instance of ISieveModel</param>
+        /// <param name="source">Data source</param>
+        /// <param name="dataForCustomMethods">Additional data that will be passed down to custom methods</param>
+        /// <returns>Returns a transformed version of `source`</returns>
         public IQueryable<TEntity> ApplyPagination<TEntity>(ISieveModel model, IQueryable<TEntity> result)
         {
             var page = model?.Page ?? 1;

Sieve/Sieve.nuspec

@@ -2,7 +2,7 @@
 <package xmlns="http://schemas.microsoft.com/packaging/2013/05/nuspec.xsd">
   <metadata>
     <id>Sieve</id>
-    <version>1.3.7</version>
+    <version>1.3.8</version>
     <title>Sieve</title>
     <authors>Biarity</authors>
     <owners>Biarity</owners>
@@ -13,7 +13,7 @@
     <description>
       Sieve is a simple, clean, and extensible framework for .NET Core that adds sorting, filtering, and pagination functionality out of the box. Most common use case would be for serving ASP.NET Core GET queries. Documentation available on GitHub: https://github.com/Biarity/Sieve/
     </description>
-    <releaseNotes>Custom operators no longer supported for simplicity</releaseNotes>
+    <releaseNotes>Filter before sort</releaseNotes>
     <copyright>Copyright 2018</copyright>
     <tags>aspnetcore filter sort page paginate sieve search</tags>
     <dependencies>

SieveUnitTests/Entities/Post.cs

@@ -0,0 +1,25 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+using Sieve.Attributes;
+
+namespace SieveUnitTests.Entities
+{
+    public class Post
+    {
+        public int Id { get; set; }
+
+        [Sieve(CanFilter = true, CanSort = true)]
+        public string Title { get; set; } = Guid.NewGuid().ToString().Replace("-", string.Empty).Substring(0, 8);
+
+        [Sieve(CanFilter = true, CanSort = true)]
+        public int LikeCount { get; set; } = new Random().Next(0, 1000);
+
+        [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;
+    }
+}

SieveUnitTests/General.cs

@@ -0,0 +1,97 @@
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Sieve.Models;
+using Sieve.Services;
+using SieveUnitTests.Entities;
+using SieveUnitTests.Services;
+using System;
+using System.Linq;
+using System.Collections.Generic;
+
+namespace SieveUnitTests
+{
+    [TestClass]
+    public class General
+    {
+        private SieveProcessor _processor;
+        private IQueryable<Post> _posts;
+
+        public General()
+        {
+            _processor = new SieveProcessor(new SieveOptionsAccessor(),
+                new SieveCustomSortMethods(),
+                new SieveCustomFilterMethods());
+
+            _posts = new List<Post>
+            {
+                new Post() {
+                    Id = 0,
+                    Title = "A",
+                    LikeCount = 100
+                },
+                new Post() {
+                    Id = 1,
+                    Title = "B",
+                    LikeCount = 50
+                },
+                new Post() {
+                    Id = 2,
+                    Title = "C",
+                    LikeCount = 0
+                },
+            }.AsQueryable();
+        }
+
+        [TestMethod]
+        public void ContainsCanBeCaseInsensitive()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "Title@=*a"
+            };
+
+            var result = _processor.ApplyFiltering(model, _posts);
+
+            Assert.AreEqual(result.First().Id, 0);
+            Assert.IsTrue(result.Count() == 1);
+        }
+
+        [TestMethod]
+        public void ContainsIsCaseSensitive()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "Title@=a",
+            };
+
+            var result = _processor.ApplyFiltering(model, _posts);
+
+            Assert.IsTrue(result.Count() == 0);
+        }
+
+        [TestMethod]
+        public void EqualsDoesntFailWithNonStringTypes()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "LikeCount==50",
+            };
+
+            Console.WriteLine(model.FiltersParsed.First().Value);
+            Console.WriteLine(model.FiltersParsed.First().Operator);
+            Console.WriteLine(model.FiltersParsed.First().OperatorParsed);
+
+            var result = _processor.ApplyFiltering(model, _posts);
+
+
+
+            Assert.AreEqual(result.First().Id, 1);
+            Assert.IsTrue(result.Count() == 1);
+        }
+    }
+}
+
+//
+//Sorts = "LikeCount",
+//Page = 1,
+//PageSize = 10
+//

SieveUnitTests/Services/SieveCustomFilterMethods.cs

@@ -0,0 +1,20 @@
+using Sieve.Services;
+using SieveUnitTests.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace SieveUnitTests.Services
+{
+    public class SieveCustomFilterMethods : ISieveCustomFilterMethods
+    {
+        public IQueryable<Post> IsNew(IQueryable<Post> source, string op, string value)
+        {
+            var result = source.Where(p => p.LikeCount < 100 &&
+                                           p.CommentCount < 5);
+
+            return result;
+        }
+    }
+}

SieveUnitTests/Services/SieveCustomSortMethods.cs

@@ -0,0 +1,23 @@
+using Sieve.Services;
+using SieveUnitTests.Entities;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Threading.Tasks;
+
+namespace SieveUnitTests.Services
+{
+    public class SieveCustomSortMethods : ISieveCustomSortMethods
+    {
+        public IQueryable<Post> Popularity(IQueryable<Post> source, bool useThenBy, bool desc)
+        {
+            var result = useThenBy ?
+                ((IOrderedQueryable<Post>)source).ThenBy(p => p.LikeCount) :
+                source.OrderBy(p => p.LikeCount)
+                .ThenBy(p => p.CommentCount)
+                .ThenBy(p => p.DateCreated);
+
+            return result;
+        }
+    }
+}

SieveUnitTests/Services/SieveOptionsAccessor.cs

@@ -0,0 +1,26 @@
+using Microsoft.Extensions.Options;
+using Sieve.Models;
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace SieveUnitTests
+{
+    public class SieveOptionsAccessor : IOptions<SieveOptions>
+    {
+        private SieveOptions _value;
+
+        public SieveOptions Value
+        {
+            get
+            {
+                return _value;
+            }
+        }
+
+        public SieveOptionsAccessor()
+        {
+            _value = new SieveOptions();
+        }
+    }
+}

SieveUnitTests/SieveUnitTests.csproj

@@ -0,0 +1,19 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <PropertyGroup>
+    <TargetFramework>netcoreapp2.0</TargetFramework>
+
+    <IsPackable>false</IsPackable>
+  </PropertyGroup>
+
+  <ItemGroup>
+    <PackageReference Include="Microsoft.NET.Test.Sdk" Version="15.5.0" />
+    <PackageReference Include="MSTest.TestAdapter" Version="1.2.0" />
+    <PackageReference Include="MSTest.TestFramework" Version="1.2.0" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Sieve\Sieve.csproj" />
+  </ItemGroup>
+
+</Project>

publishing_to_nuget.md

@@ -1,6 +1,6 @@
 ### 1. Pack:
 ```
-dotnet pack Sieve.csproj -c Release -o . /p:PackageVersion=1.3.4
+dotnet pack Sieve.csproj -c Release -o . /p:PackageVersion=1.3.8
 ```
 Don't forget to change version since nuget packages are immutable (add one to the nuget current).
 
@@ -13,7 +13,7 @@ Also don't forget updaing `releaseNotes` in nuspec.
 
 ### 3. Publish:
 ```
-nuget push Sieve.1.2.0.nupkg API_KEY -Source https://api.nuget.org/v3/index.json
+nuget push Sieve.1.3.8.nupkg API_KEY -Source https://api.nuget.org/v3/index.json
 ```
 Replace API_KEY with one you get from nuget's website.
 Also don't forget to replace corresponding version.