IBinaryExpressionInfo.StringToLower (#445)

Author: AlekseyMartynov

net/DevExtreme.AspNet.Data.Tests/CustomFilterCompilersTests.cs

@@ -91,6 +91,29 @@ public void ArrayContainsWithNullGuard() {
             }
         }
 
+        [Fact]
+        public void StringToLower() {
+            try {
+                var stringToLowerLog = new List<bool>();
+
+                CustomFilterCompilers.RegisterBinaryExpressionCompiler(info => {
+                    stringToLowerLog.Add(info.StringToLower);
+                    return Expression.Constant(true);
+                });
+
+                foreach(var stringToLower in new[] { false, true }) {
+                    DataSourceLoader.Load(new Product[0], new SampleLoadOptions {
+                        Filter = new[] { "any", "any", "any" },
+                        StringToLower = stringToLower
+                    });
+                }
+
+                Assert.False(stringToLowerLog[0]);
+                Assert.True(stringToLowerLog[1]);
+            } finally {
+                CustomFilterCompilers.Binary.CompilerFuncs.Clear();
+            }
+        }
 
         class Product {
             public string Name { get; set; }

net/DevExtreme.AspNet.Data/FilterExpressionCompiler.cs

@@ -53,7 +53,8 @@ Expression CompileBinary(ParameterExpression dataItemExpr, IList criteriaJson) {
                     DataItemExpression = dataItemExpr,
                     AccessorText = clientAccessor,
                     Operation = clientOperation,
-                    Value = clientValue
+                    Value = clientValue,
+                    StringToLower = _stringToLower
                 });
 
                 if(customResult != null)
@@ -290,6 +291,7 @@ class BinaryExpressionInfo : IBinaryExpressionInfo {
             public string AccessorText { get; set; }
             public string Operation { get; set; }
             public object Value { get; set; }
+            public bool StringToLower { get; set; }
         }
     }
 

net/DevExtreme.AspNet.Data/Helpers/IBinaryExpressionInfo.cs

@@ -8,6 +8,7 @@ public interface IBinaryExpressionInfo {
         string AccessorText { get; }
         string Operation { get; }
         object Value { get; }
+        bool StringToLower { get; }
     }
 
 }