Added Volo.Abp.ObjectExtending package.

framework/Volo.Abp.sln

@@ -273,7 +273,9 @@ Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Volo.Abp.AspNetCore.Mvc.UI.
 EndProject
 Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic.Demo", "test\Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic.Demo\Volo.Abp.AspNetCore.Mvc.UI.Theme.Basic.Demo.csproj", "{0C498CF2-D052-4BF7-AD35-509A90F69707}"
 EndProject
-Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Volo.Abp.Http.Client.IdentityModel.Web.Tests", "test\Volo.Abp.Http.Client.IdentityModel.Web.Tests\Volo.Abp.Http.Client.IdentityModel.Web.Tests.csproj", "{E1963439-2BE5-4DB5-8438-2A9A792A1ADA}"
+Project("{9A19103F-16F7-4668-BE54-9A1E7A4F7556}") = "Volo.Abp.Http.Client.IdentityModel.Web.Tests", "test\Volo.Abp.Http.Client.IdentityModel.Web.Tests\Volo.Abp.Http.Client.IdentityModel.Web.Tests.csproj", "{E1963439-2BE5-4DB5-8438-2A9A792A1ADA}"
+EndProject
+Project("{FAE04EC0-301F-11D3-BF4B-00C04F79EFBC}") = "Volo.Abp.ObjectExtending", "src\Volo.Abp.ObjectExtending\Volo.Abp.ObjectExtending.csproj", "{D1815C77-16D6-4F99-8814-69065CD89FB3}"
 EndProject
 Global
 	GlobalSection(SolutionConfigurationPlatforms) = preSolution
@@ -817,6 +819,10 @@ Global
 		{E1963439-2BE5-4DB5-8438-2A9A792A1ADA}.Debug|Any CPU.Build.0 = Debug|Any CPU
 		{E1963439-2BE5-4DB5-8438-2A9A792A1ADA}.Release|Any CPU.ActiveCfg = Release|Any CPU
 		{E1963439-2BE5-4DB5-8438-2A9A792A1ADA}.Release|Any CPU.Build.0 = Release|Any CPU
+		{D1815C77-16D6-4F99-8814-69065CD89FB3}.Debug|Any CPU.ActiveCfg = Debug|Any CPU
+		{D1815C77-16D6-4F99-8814-69065CD89FB3}.Debug|Any CPU.Build.0 = Debug|Any CPU
+		{D1815C77-16D6-4F99-8814-69065CD89FB3}.Release|Any CPU.ActiveCfg = Release|Any CPU
+		{D1815C77-16D6-4F99-8814-69065CD89FB3}.Release|Any CPU.Build.0 = Release|Any CPU
 	EndGlobalSection
 	GlobalSection(SolutionProperties) = preSolution
 		HideSolutionNode = FALSE
@@ -956,6 +962,7 @@ Global
 		{29E42ADB-85F8-44AE-A9B0-078F84C1B866} = {5DF0E140-0513-4D0D-BE2E-3D4D85CD70E6}
 		{0C498CF2-D052-4BF7-AD35-509A90F69707} = {447C8A77-E5F0-4538-8687-7383196D04EA}
 		{E1963439-2BE5-4DB5-8438-2A9A792A1ADA} = {447C8A77-E5F0-4538-8687-7383196D04EA}
+		{D1815C77-16D6-4F99-8814-69065CD89FB3} = {5DF0E140-0513-4D0D-BE2E-3D4D85CD70E6}
 	EndGlobalSection
 	GlobalSection(ExtensibilityGlobals) = postSolution
 		SolutionGuid = {BB97ECF4-9A84-433F-A80B-2A3285BDD1D5}

framework/src/Volo.Abp.AutoMapper/AutoMapper/AbpAutoMapperExtensibleDtoExtensions.cs

@@ -0,0 +1,35 @@
+using System.Collections.Generic;
+using Volo.Abp.Data;
+using Volo.Abp.ObjectExtending;
+
+namespace AutoMapper
+{
+    public static class AbpAutoMapperExtensibleDtoExtensions
+    {
+        public static IMappingExpression<TSource, TDestination> MapExtraProperties<TSource, TDestination>(
+            this IMappingExpression<TSource, TDestination> mappingExpression)
+            where TDestination : IHasExtraProperties
+            where TSource : IHasExtraProperties
+        {
+            var properties = ObjectExtensionManager.GetProperties<TDestination>();
+            return mappingExpression
+                .ForMember(
+                    x => x.ExtraProperties,
+                    y => y.MapFrom(
+                        (source, dto, extraProps) =>
+                        {
+                            var result = extraProps.IsNullOrEmpty()
+                                ? new Dictionary<string, object>()
+                                : new Dictionary<string, object>(extraProps);
+
+                            foreach (var property in properties)
+                            {
+                                result[property.Name] = source.ExtraProperties[property.Name];
+                            }
+
+                            return result;
+                        })
+                );
+        }
+    }
+}

framework/src/Volo.Abp.AutoMapper/Volo.Abp.AutoMapper.csproj

@@ -15,6 +15,7 @@
   </PropertyGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\Volo.Abp.ObjectExtending\Volo.Abp.ObjectExtending.csproj" />
     <ProjectReference Include="..\Volo.Abp.ObjectMapping\Volo.Abp.ObjectMapping.csproj" />
   </ItemGroup>
 

framework/src/Volo.Abp.AutoMapper/Volo/Abp/AutoMapper/AbpAutoMapperModule.cs

@@ -3,11 +3,14 @@ using AutoMapper;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.Options;
 using Volo.Abp.Modularity;
+using Volo.Abp.ObjectExtending;
 using Volo.Abp.ObjectMapping;
 
 namespace Volo.Abp.AutoMapper
 {
-    [DependsOn(typeof(AbpObjectMappingModule))]
+    [DependsOn(
+        typeof(AbpObjectMappingModule),
+        typeof(AbpObjectExtendingModule))]
     public class AbpAutoMapperModule : AbpModule
     {
         public override void ConfigureServices(ServiceConfigurationContext context)

framework/src/Volo.Abp.Data/Volo.Abp.Data.csproj

@@ -16,6 +16,7 @@
 
   <ItemGroup>
     <ProjectReference Include="..\Volo.Abp.Core\Volo.Abp.Core.csproj" />
+    <ProjectReference Include="..\Volo.Abp.ObjectExtending\Volo.Abp.ObjectExtending.csproj" />
     <ProjectReference Include="..\Volo.Abp.Uow\Volo.Abp.Uow.csproj" />
   </ItemGroup>
 

framework/src/Volo.Abp.Data/Volo/Abp/Data/AbpDataModule.cs

@@ -2,13 +2,15 @@
 using System.Collections.Generic;
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.Modularity;
+using Volo.Abp.ObjectExtending;
 using Volo.Abp.Uow;
 
 namespace Volo.Abp.Data
 {
     [DependsOn(
+        typeof(AbpObjectExtendingModule),
         typeof(AbpUnitOfWorkModule)
-        )]
+    )]
     public class AbpDataModule : AbpModule
     {
         public override void PreConfigureServices(ServiceConfigurationContext context)

framework/src/Volo.Abp.Ddd.Application.Contracts/Volo/Abp/Application/Dtos/ExtensibleEntityDto.cs

@@ -0,0 +1,28 @@
+using System;
+using Volo.Abp.ObjectExtending;
+
+namespace Volo.Abp.Application.Dtos
+{
+    [Serializable]
+    public abstract class ExtensibleEntityDto<TKey> : ExtensibleObject, IEntityDto<TKey>
+    {
+        /// <summary>
+        /// Id of the entity.
+        /// </summary>
+        public TKey Id { get; set; }
+
+        public override string ToString()
+        {
+            return $"[DTO: {GetType().Name}] Id = {Id}";
+        }
+    }
+
+    [Serializable]
+    public abstract class ExtensibleEntityDto : ExtensibleObject, IEntityDto
+    {
+        public override string ToString()
+        {
+            return $"[DTO: {GetType().Name}]";
+        }
+    }
+}

framework/src/Volo.Abp.ObjectExtending/FodyWeavers.xml

@@ -0,0 +1,3 @@
+<Weavers xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="FodyWeavers.xsd">
+  <ConfigureAwait ContinueOnCapturedContext="false" />
+</Weavers>

framework/src/Volo.Abp.ObjectExtending/FodyWeavers.xsd

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="utf-8"?>
+<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema">
+  <!-- This file was generated by Fody. Manual changes to this file will be lost when your project is rebuilt. -->
+  <xs:element name="Weavers">
+    <xs:complexType>
+      <xs:all>
+        <xs:element name="ConfigureAwait" minOccurs="0" maxOccurs="1">
+          <xs:complexType>
+            <xs:attribute name="ContinueOnCapturedContext" type="xs:boolean" />
+          </xs:complexType>
+        </xs:element>
+      </xs:all>
+      <xs:attribute name="VerifyAssembly" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'true' to run assembly verification (PEVerify) on the target assembly after all weavers have been executed.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="VerifyIgnoreCodes" type="xs:string">
+        <xs:annotation>
+          <xs:documentation>A comma-separated list of error codes that can be safely ignored in assembly verification.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+      <xs:attribute name="GenerateXsd" type="xs:boolean">
+        <xs:annotation>
+          <xs:documentation>'false' to turn off automatic generation of the XML Schema file.</xs:documentation>
+        </xs:annotation>
+      </xs:attribute>
+    </xs:complexType>
+  </xs:element>
+</xs:schema>

framework/src/Volo.Abp.ObjectExtending/Volo.Abp.ObjectExtending.csproj

@@ -0,0 +1,21 @@
+<Project Sdk="Microsoft.NET.Sdk">
+
+  <Import Project="..\..\..\configureawait.props" />
+  <Import Project="..\..\..\common.props" />
+
+  <PropertyGroup>
+    <TargetFramework>netstandard2.0</TargetFramework>
+    <AssemblyName>Volo.Abp.ObjectExtending</AssemblyName>
+    <PackageId>Volo.Abp.ObjectExtending</PackageId>
+    <AssetTargetFallback>$(AssetTargetFallback);portable-net45+win8+wp8+wpa81;</AssetTargetFallback>
+    <GenerateAssemblyConfigurationAttribute>false</GenerateAssemblyConfigurationAttribute>
+    <GenerateAssemblyCompanyAttribute>false</GenerateAssemblyCompanyAttribute>
+    <GenerateAssemblyProductAttribute>false</GenerateAssemblyProductAttribute>
+    <RootNamespace />
+  </PropertyGroup>
+
+  <ItemGroup>
+    <ProjectReference Include="..\Volo.Abp.Core\Volo.Abp.Core.csproj" />
+  </ItemGroup>
+
+</Project>

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/AbpObjectExtendingModule.cs

@@ -0,0 +1,9 @@
+using Volo.Abp.Modularity;
+
+namespace Volo.Abp.ObjectExtending
+{
+    public class AbpObjectExtendingModule : AbpModule
+    {
+
+    }
+}

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/ExtensibleObject.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Collections.Generic;
+using Volo.Abp.Data;
+
+namespace Volo.Abp.ObjectExtending
+{
+    [Serializable]
+    public class ExtensibleObject : IHasExtraProperties
+    {
+        public Dictionary<string, object> ExtraProperties { get; protected set; }
+
+        public ExtensibleObject()
+        {
+            ExtraProperties = new Dictionary<string, object>();
+        }
+    }
+}

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/ObjectExtensionInfo.cs

@@ -0,0 +1,14 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.ObjectExtending
+{
+    public class ObjectExtensionInfo
+    {
+        public Dictionary<string, ObjectExtensionPropertyInfo> Properties { get; }
+
+        public ObjectExtensionInfo()
+        {
+            Properties = new Dictionary<string, ObjectExtensionPropertyInfo>();
+        }
+    }
+}

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/ObjectExtensionManager.cs

@@ -0,0 +1,40 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using Volo.Abp.Data;
+
+namespace Volo.Abp.ObjectExtending
+{
+    public static class ObjectExtensionManager
+    {
+        //TODO: Concurrent, to allow extend on runtime!
+        private static Dictionary<Type, ObjectExtensionInfo> Extensions { get; }
+
+        static ObjectExtensionManager()
+        {
+            Extensions = new Dictionary<Type, ObjectExtensionInfo>();
+        }
+
+        public static ObjectExtensionPropertyInfo AddProperty<TDto>(
+            string propertyName, 
+            Action<ObjectExtensionPropertyInfo> configureAction = null)
+        {
+            var extensionInfo = Extensions.GetOrAdd(typeof(TDto), () => new ObjectExtensionInfo());
+            var propertyInfo = extensionInfo.Properties.GetOrAdd(propertyName, () => new ObjectExtensionPropertyInfo(propertyName));
+            configureAction?.Invoke(propertyInfo);
+            return propertyInfo;
+        }
+
+        public static ImmutableList<ObjectExtensionPropertyInfo> GetProperties<TDto>()
+            where TDto : IHasExtraProperties
+        {
+            var extensionInfo = Extensions.GetOrDefault(typeof(TDto));
+            if (extensionInfo == null)
+            {
+                return new ObjectExtensionPropertyInfo[0].ToImmutableList(); //TODO: Return an empty one!
+            }
+
+            return extensionInfo.Properties.Values.ToImmutableList();
+        }
+    }
+}

framework/src/Volo.Abp.ObjectExtending/Volo/Abp/ObjectExtending/ObjectExtensionPropertyInfo.cs

@@ -0,0 +1,18 @@
+using System.Collections.Generic;
+using System.ComponentModel.DataAnnotations;
+
+namespace Volo.Abp.ObjectExtending
+{
+    public class ObjectExtensionPropertyInfo
+    {
+        public string Name { get; }
+
+        public List<ValidationAttribute> ValidationAttributes { get; }
+
+        public ObjectExtensionPropertyInfo(string name)
+        {
+            Name = name;
+            ValidationAttributes = new List<ValidationAttribute>();
+        }
+    }
+}

nupkg/common.ps1

@@ -91,6 +91,7 @@ $projects = (
     "framework/src/Volo.Abp.MongoDB",
     "framework/src/Volo.Abp.MultiTenancy",
     "framework/src/Volo.Abp.Minify",
+    "framework/src/Volo.Abp.ObjectExtending",
     "framework/src/Volo.Abp.ObjectMapping",
     "framework/src/Volo.Abp.Quartz",
     "framework/src/Volo.Abp.RabbitMQ",