为对象增加ExpandProperties方法，该方法扩展对象的属性成为ExpandPropertyInfo枚举记录属性的名称、类型和值。

2023-01-05 10:02:26 +08:00 · 2023-01-05 10:02:26 +08:00 · 766ef83f4b
commit 766ef83f4b
parent 819a5657e8
5 changed files with 117 additions and 25 deletions
--- a/.editorconfig
+++ b/.editorconfig
@ -0,0 +1,4 @@
+[*.cs]
+
+# CS8618: 在退出构造函数时，不可为 null 的字段必须包含非 null 值。请考虑声明为可以为 null。
+dotnet_diagnostic.CS8618.severity = none
--- a/Falcon.SugarApi.Test/ObjectExtendTest.cs
+++ b/Falcon.SugarApi.Test/ObjectExtendTest.cs
@ -15,22 +15,22 @@ namespace Falcon.SugarApi.Test
        public void CloneToTest() {
            var s = new SourceClass { };
            var t = new TargetClass { };
-            t.ica.ItemA = "itemb";
+            t.ica.ItemA="itemb";

-            Assert.IsTrue(t.ica.ItemA == "itemb");
+            Assert.IsTrue(t.ica.ItemA=="itemb");

            var r = s.CloneTo(t);

            Assert.IsNotNull(s);
            Assert.IsNotNull(r);
            Assert.IsNotNull(t);
-            Assert.IsTrue(s.ia == t.ia, $"a.id:{s.ia},t.ia:{t.ia}");
-            Assert.IsTrue(t.ia == 1);
-            Assert.IsTrue(s.sa == t.sa);
-            Assert.IsTrue(s.sc == "sc");
-            Assert.IsTrue(t.sd == "sd");
-            Assert.IsTrue(s.ica.ItemA == "itema");
-            Assert.IsTrue(t.ica.ItemA == "itema");
+            Assert.IsTrue(s.ia==t.ia,$"a.id:{s.ia},t.ia:{t.ia}");
+            Assert.IsTrue(t.ia==1);
+            Assert.IsTrue(s.sa==t.sa);
+            Assert.IsTrue(s.sc=="sc");
+            Assert.IsTrue(t.sd=="sd");
+            Assert.IsTrue(s.ica.ItemA=="itema");
+            Assert.IsTrue(t.ica.ItemA=="itema");
            Assert.IsTrue(t.ica.Equals(s.ica));
        }

@ -48,9 +48,55 @@ namespace Falcon.SugarApi.Test
        public void ThrowNullExceptionWhenNullTest() {
            var obj = new object();
            obj.ThrowNullExceptionWhenNull();
-            obj = null;
+            obj=null;
            Assert.ThrowsException<ArgumentNullException>(() => obj.ThrowNullExceptionWhenNull());
        }
+
+        /// <summary>
+        /// 测试对象属性扩展
+        /// </summary>
+        [TestMethod]
+        public void ExtendPropertyTest() {
+            var obj = new ExtendPropertyTestClass {
+                Id=1,Name="Falcon",Sex=null,Count="count"
+            };
+            var ep = obj.ExpandProperties();
+            Assert.IsNotNull(ep);
+            Assert.IsTrue(ep.Count()==4);
+            Assert.IsTrue(ep.Select(m => m.Name).Distinct().Count()==4);
+            foreach(var p in ep) {
+                if(p.Name=="Id") {
+                    Assert.IsTrue(p.Type==typeof(int));
+                    Assert.IsTrue(p.Value.Equals(obj.Id));
+                    continue;
+                }
+                if(p.Name=="Name") {
+                    Assert.IsTrue(p.Type==typeof(string));
+                    Assert.IsTrue(p.Value.Equals(obj.Name));
+                    continue;
+                }
+                if(p.Name=="Sex") {
+                    Assert.IsTrue(p.Type==typeof(string));
+                    Assert.IsTrue(p.Value==null);
+                    continue;
+                }
+                if(p.Name=="Count") {
+                    Assert.IsTrue(p.Type==typeof(string));
+                    Assert.IsTrue(p.Value=="count");
+                    continue;
+                }
+            }
+        }
+    }
+    /// <summary>
+    /// 扩展属性测试类
+    /// </summary>
+    public class ExtendPropertyTestClass
+    {
+        public int Id { get; set; }
+        public string Name { get; set; }
+        public string? Sex { get; set; }
+        public string Count { private get; set; }
    }

    public class SourceClass
--- a/Falcon.SugarApi.sln
+++ b/Falcon.SugarApi.sln
@ -9,6 +9,7 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Falcon.SugarApi.Test", "Fal
 EndProject
 Project("{2150E333-8FDC-42A3-9474-1A3956D46DE8}") = "Solution Items", "Solution Items", "{08995833-E4C9-4222-9084-36BA32B9490E}"
 	ProjectSection(SolutionItems) = preProject
+		.editorconfig = .editorconfig
 		README.md = README.md
 	EndProjectSection
 EndProject
--- a/Falcon.SugarApi/Falcon.SugarApi.csproj
+++ b/Falcon.SugarApi/Falcon.SugarApi.csproj
@ -10,6 +10,10 @@
 		<Version>1.0.0</Version>
 	</PropertyGroup>

+	<ItemGroup>
+	  <None Include="..\.editorconfig" Link=".editorconfig" />
+	</ItemGroup>
+
 	<ItemGroup>
 		<!--<PackageReference Include="Microsoft.AspNetCore.Mvc.Core" Version="2.2.5" />-->
 		<PackageReference Include="JWT" Version="9.0.3" />
--- a/Falcon.SugarApi/ObjectExtend.cs
+++ b/Falcon.SugarApi/ObjectExtend.cs
@ -1,7 +1,9 @@
 using System;
+using System.Collections.Generic;
 using System.ComponentModel;
 using System.Diagnostics.CodeAnalysis;
 using System.Linq;
+using System.Reflection;

 namespace Falcon.SugarApi
 {
@ -16,15 +18,15 @@ namespace Falcon.SugarApi
        /// <typeparam name="TSource">原对象类型</typeparam>
        /// <param name="source">原对象</param>
        /// <param name="target">目标对象</param>
-        public static TSource CloneTo<TSource>(this TSource source, [NotNull] object target) where TSource : class {
-            _ = source ?? throw new ArgumentNullException(nameof(source));
-            _ = target ?? throw new ArgumentNullException(nameof(target));
+        public static TSource CloneTo<TSource>(this TSource source,[NotNull] object target) where TSource : class {
+            _=source??throw new ArgumentNullException(nameof(source));
+            _=target??throw new ArgumentNullException(nameof(target));
            var all = from s in source.GetType().GetProperties()
                      join t in target.GetType().GetProperties() on s.Name equals t.Name
-                      select new { s, t };
-            foreach (var item in all) {
-                //item.t.SetValue(target, Convert.ChangeType(item.s.GetValue(source), item.t.PropertyType));
-                item.t.SetValue(target, item.s.GetValue(source).ChangeType(item.t.PropertyType));
+                      select new { s,t };
+            foreach(var item in all) {
+                //item.t.SetValue(target, Convert.ChangeType(item.s.GetValue(source), item.t.Type));
+                item.t.SetValue(target,item.s.GetValue(source).ChangeType(item.t.PropertyType));
            }
            return source;
        }
@ -36,7 +38,7 @@ namespace Falcon.SugarApi
        /// <param name="target">目标对象</param>
        /// <param name="source">原对象</param>
        /// <returns>目标对象</returns>
-        public static Ttarget CloneFrom<Ttarget>(this Ttarget target, object source) where Ttarget : class {
+        public static Ttarget CloneFrom<Ttarget>(this Ttarget target,object source) where Ttarget : class {
            source.CloneTo(target);
            return target;
        }
@ -47,18 +49,18 @@ namespace Falcon.SugarApi
        /// <param name="source">原对象</param>
        /// <param name="targetType">目标类型</param>
        /// <returns>转换后的类型</returns>
-        public static object? ChangeType(this object? source, Type targetType) {
-            if (targetType == null) {
+        public static object? ChangeType(this object? source,Type targetType) {
+            if(targetType==null) {
                throw new ArgumentNullException("targetType");
            }
-            if (source == null) {
+            if(source==null) {
                return null;
            }
-            if (targetType.IsGenericType && targetType.GetGenericTypeDefinition().Equals(typeof(Nullable<>))) {
+            if(targetType.IsGenericType&&targetType.GetGenericTypeDefinition().Equals(typeof(Nullable<>))) {
                NullableConverter nullableConverter = new NullableConverter(targetType);
-                targetType = nullableConverter.UnderlyingType;
+                targetType=nullableConverter.UnderlyingType;
            }
-            return Convert.ChangeType(source, targetType);
+            return Convert.ChangeType(source,targetType);
        }

        /// <summary>
@ -68,10 +70,45 @@ namespace Falcon.SugarApi
        /// <returns>对象本身</returns>
        /// <exception cref="ArgumentNullException">对象为null</exception>
        public static object? ThrowNullExceptionWhenNull(this object? obj) {
-            if (obj == null) {
+            if(obj==null) {
                throw new ArgumentNullException();
            }
            return obj;
        }
+
+        /// <summary>
+        /// 扩展对象，获取属性枚举s
+        /// </summary>
+        /// <param name="obj">要扩展的对象</param>
+        /// <returns></returns>
+        public static IEnumerable<ExpandPropertyInfo> ExpandProperties(this object obj) {
+            foreach(PropertyInfo p in obj.GetType().GetProperties()) {
+                yield return new ExpandPropertyInfo {
+                    Name=p.Name,
+                    Type=p.PropertyType,
+                    Value=p.CanRead ? p.GetValue(obj) : null,
+                };
+            }
+        }
    }
+
+    /// <summary>
+    /// 展开的属性信息
+    /// </summary>
+    public class ExpandPropertyInfo
+    {
+        /// <summary>
+        /// 属性名
+        /// </summary>
+        public string Name { get; set; }
+        /// <summary>
+        /// 属性类型
+        /// </summary>
+        public Type Type { get; set; }
+        /// <summary>
+        /// 属性值
+        /// </summary>
+        public object? Value { get; set; }
+    }
+
 }