Added OR flitering for values and ability to escape delimiters. Fixes #8, #21, and #41

README.md

@@ -137,11 +137,12 @@ More formally:
         * You can also have multiple names (for OR logic) by enclosing them in brackets and using a pipe delimiter, eg. `(LikeCount|CommentCount)>10` asks if `LikeCount` or `CommentCount` is `>10`
     * `{Operator}` is one of the [Operators](#operators)
     * `{Value}` is the value to use for filtering
+        * You can also have multiple values (for OR logic) by using a pipe delimiter, eg. `Title@=new|hot` will return posts with titles that contain the text "`new`" or "`hot`"
 * `page` is the number of page to return
 * `pageSize` is the number of items returned per page 
 
 Notes:
-* Don't forget to **remove commas (`,`), brackets (`(`, `)`), and pipes (`|`) from any `{Value}` fields**
+* You can use backslashes to escape commas and pipes within value fields
 * You can have spaces anywhere except *within* `{Name}` or `{Operator}` fields
 * Here's a [good example on how to work with enumerables](https://github.com/Biarity/Sieve/issues/2)
 * Another example on [how to do OR logic](https://github.com/Biarity/Sieve/issues/8)

Sieve.sln

@@ -12,6 +12,7 @@ EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{904F25A9-5CBD-42AE-8422-ADAB98F4B4B7}"
 	ProjectSection(SolutionItems) = preProject
 		.editorconfig = .editorconfig
+		README.md = README.md
 	EndProjectSection
 EndProject
 Global

Sieve/Models/FilterTerm.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Linq;
+using System.Text.RegularExpressions;
 
 namespace Sieve.Models
 {
@@ -7,6 +8,8 @@ namespace Sieve.Models
     {
         public FilterTerm() { }
 
+        private const string EscapedPipePattern = @"(?<!($|[^\\])(\\\\)*?\\)\|";
+
         private static readonly string[] Operators = new string[] {
                     "==*",
                     "@=*",
@@ -25,9 +28,10 @@ namespace Sieve.Models
         {
             set
             {
-                var filterSplits = value.Split(Operators, StringSplitOptions.RemoveEmptyEntries).Select(t => t.Trim()).ToArray();
+                var filterSplits = value.Split(Operators, StringSplitOptions.RemoveEmptyEntries)
-                Names = filterSplits[0].Split('|').Select(t => t.Trim()).ToArray();
+                    .Select(t => t.Trim()).ToArray();
-                Value = filterSplits.Length > 1 ? filterSplits[1] : null;
+                Names = Regex.Split(filterSplits[0], EscapedPipePattern).Select(t => t.Trim()).ToArray();
+                Values = filterSplits.Length > 1 ? Regex.Split(filterSplits[1], EscapedPipePattern).Select(t => t.Trim()).ToArray() : null;
                 Operator = Array.Find(Operators, o => value.Contains(o)) ?? "==";
                 OperatorParsed = GetOperatorParsed(Operator);
                 OperatorIsCaseInsensitive = Operator.Contains("*");
@@ -39,7 +43,7 @@ namespace Sieve.Models
 
         public FilterOperator OperatorParsed { get; private set; }
 
-        public string Value { get; private set; }
+        public string[] Values { get; private set; }
 
         public string Operator { get; private set; }
 

Sieve/Models/IFilterTerm.cs

@@ -7,6 +7,6 @@
         string Operator { get; }
         bool OperatorIsCaseInsensitive { get; }
         FilterOperator OperatorParsed { get; }
-        string Value { get; }
+        string[] Values { get; }
     }
 }

Sieve/Models/SieveModel.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.ComponentModel.DataAnnotations;
 using System.Linq;
 using System.Runtime.Serialization;
+using System.Text.RegularExpressions;
 
 namespace Sieve.Models
 {
@@ -13,6 +14,8 @@ namespace Sieve.Models
         where TFilterTerm : IFilterTerm, new()
         where TSortTerm : ISortTerm, new()
     {
+        private const string EscapedCommaPattern = @"(?<!($|[^\\])(\\\\)*?\\),";
+
         [DataMember]
         public string Filters { get; set; }
 
@@ -30,7 +33,7 @@ namespace Sieve.Models
             if (Filters != null)
             {
                 var value = new List<TFilterTerm>();
-                foreach (var filter in Filters.Split(','))
+                foreach (var filter in Regex.Split(Filters, EscapedCommaPattern))
                 {
                     if (string.IsNullOrWhiteSpace(filter)) continue;
 
@@ -69,7 +72,7 @@ namespace Sieve.Models
             if (Sorts != null)
             {
                 var value = new List<TSortTerm>();
-                foreach (var sort in Sorts.Split(','))
+                foreach (var sort in Regex.Split(Sorts, EscapedCommaPattern))
                 {
                     if (string.IsNullOrWhiteSpace(sort)) continue;
 

Sieve/Services/SieveProcessor.cs

@@ -180,14 +180,17 @@ namespace Sieve.Services
                     if (property != null)
                     {
                         var converter = TypeDescriptor.GetConverter(property.PropertyType);
+                        dynamic propertyValue = Expression.PropertyOrField(parameterExpression, property.Name);
+
+                        foreach (var filterTermValue in filterTerm.Values)
+                        {
 
                             dynamic constantVal = converter.CanConvertFrom(typeof(string))
-                                                  ? converter.ConvertFrom(filterTerm.Value)
+                                                      ? converter.ConvertFrom(filterTermValue)
-                                                  : Convert.ChangeType(filterTerm.Value, property.PropertyType);
+                                                      : Convert.ChangeType(filterTermValue, property.PropertyType);
 
                             Expression filterValue = GetClosureOverConstant(constantVal, property.PropertyType);
 
-                        dynamic propertyValue = Expression.PropertyOrField(parameterExpression, property.Name);
 
                             if (filterTerm.OperatorIsCaseInsensitive)
                             {
@@ -209,13 +212,14 @@ namespace Sieve.Services
                                 innerExpression = Expression.Or(innerExpression, GetExpression(filterTerm, filterValue, propertyValue));
                             }
                         }
+                    }
                     else
                     {
                         result = ApplyCustomMethod(result, filterTermName, _customFilterMethods, 
                             new object[] {
                                             result,
                                             filterTerm.Operator,
-                                            filterTerm.Value
+                                            filterTerm.Values
                             }, dataForCustomMethods);
 
                     }

SieveUnitTests/Entities/Comment.cs

@@ -10,6 +10,7 @@ namespace SieveUnitTests.Entities
         [Sieve(CanFilter = true, CanSort = true)]
         public DateTimeOffset DateCreated { get; set; } = DateTimeOffset.UtcNow;
 
+        [Sieve(CanFilter = true)]
         public string Text { get; set; }
     }
 }

SieveUnitTests/General.cs

@@ -69,7 +69,7 @@ namespace SieveUnitTests
                 new Comment() {
                     Id = 2,
                     DateCreated = DateTimeOffset.UtcNow,
-                    Text = "This is a brand new comment."
+                    Text = "This is a brand new comment. ()"
                 },
             }.AsQueryable();
         }
@@ -148,7 +148,7 @@ namespace SieveUnitTests
                 Filters = "LikeCount==50",
             };
 
-            Console.WriteLine(model.GetFiltersParsed()[0].Value);
+            Console.WriteLine(model.GetFiltersParsed()[0].Values);
             Console.WriteLine(model.GetFiltersParsed()[0].Operator);
             Console.WriteLine(model.GetFiltersParsed()[0].OperatorParsed);
 
@@ -260,7 +260,7 @@ namespace SieveUnitTests
         }
 
         [TestMethod]
-        public void OrFilteringWorks()
+        public void OrNameFilteringWorks()
         {
             var model = new SieveModel()
             {
@@ -275,5 +275,32 @@ namespace SieveUnitTests
             Assert.AreEqual(1, resultCount);
             Assert.AreEqual(3, entry.Id);
         }
+        
+        [TestMethod]
+        public void OrValueFilteringWorks()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "Title==C|D",
+            };
+
+            var result = _processor.Apply(model, _posts);
+            Assert.AreEqual(2, result.Count());
+            Assert.IsTrue(result.Any(p => p.Id == 2));
+            Assert.IsTrue(result.Any(p => p.Id == 3));
+        }
+
+        [TestMethod]
+        public void OrValueFilteringWorks2()
+        {
+            var model = new SieveModel()
+            {
+                Filters = "Text@=(|)",
+            };
+
+            var result = _processor.Apply(model, _comments);
+            Assert.AreEqual(1, result.Count());
+            Assert.AreEqual(2, result.FirstOrDefault().Id);
+        }
     }
 }