Initial json localization implementation.

src/Volo.Abp.TestBase/AbpIntegratedTest.cs

@@ -4,7 +4,7 @@ using Volo.Abp.Modularity;
 
 namespace Volo.Abp.TestBase
 {
-    public class AbpIntegratedTest<TStartupModule> : AbpTestBaseWithServiceProvider, IDisposable
+    public abstract class AbpIntegratedTest<TStartupModule> : AbpTestBaseWithServiceProvider, IDisposable
         where TStartupModule : IAbpModule
     {
         protected IAbpApplication Application { get; }
@@ -54,8 +54,7 @@ namespace Volo.Abp.TestBase
         {
 	        return services.BuildServiceProviderFromFactory();
         }
-
-
+        
         public void Dispose()
         {
             Application.Shutdown();

src/Volo.Abp.TestBase/AbpTestBaseModule.cs

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

src/Volo.Abp.TestBase/AbpTestBaseWithServiceProvider.cs

@@ -88,5 +88,15 @@ namespace Volo.Abp.TestBase
                 }
             }
         }
+
+        protected virtual T GetService<T>()
+        {
+            return ServiceProvider.GetService<T>();
+        }
+
+        protected virtual T GetRequiredService<T>()
+        {
+            return ServiceProvider.GetRequiredService<T>();
+        }
     }
 }

src/Volo.Abp/Volo.Abp.csproj

@@ -15,6 +15,7 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.Extensions.DependencyInjection" Version="2.0.0" />
+    <PackageReference Include="Microsoft.Extensions.Localization" Version="2.0.0" />
     <PackageReference Include="Microsoft.Extensions.Options" Version="2.0.0" />
     <PackageReference Include="Microsoft.Extensions.Options.ConfigurationExtensions" Version="2.0.0" />
     <PackageReference Include="Microsoft.Extensions.Logging" Version="2.0.0" />

src/Volo.Abp/Volo/Abp/AbpKernelModule.cs

@@ -1,5 +1,6 @@
 using Microsoft.Extensions.DependencyInjection;
 using Volo.Abp.ApiVersioning;
+using Volo.Abp.Localization;
 using Volo.Abp.Modularity;
 using Volo.Abp.ObjectMapping;
 using Volo.Abp.Reflection;
@@ -32,6 +33,9 @@ namespace Volo.Abp
         {
             services.AddOptions();
             services.AddLogging();
+            services.AddLocalization();
+
+            AbpStringLocalizerFactory.Replace(services);
 
             services.AddAssemblyOf<AbpKernelModule>();
 

src/Volo.Abp/Volo/Abp/Internal/Utf8Helper.cs

@@ -0,0 +1,30 @@
+using System.IO;
+using System.Text;
+
+namespace Volo.Abp.Internal
+{
+    internal static class Utf8Helper
+    {
+        public static string ReadStringFromStream(Stream stream)
+        {
+            var bytes = stream.GetAllBytes();
+            var skipCount = HasBom(bytes) ? 3 : 0;
+            return Encoding.UTF8.GetString(bytes, skipCount, bytes.Length - skipCount);
+        }
+
+        private static bool HasBom(byte[] bytes)
+        {
+            if (bytes.Length < 3)
+            {
+                return false;
+            }
+
+            if (!(bytes[0] == 0xEF && bytes[1] == 0xBB && bytes[2] == 0xBF))
+            {
+                return false;
+            }
+
+            return true;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Globalization/AbpCultureHelper.cs → src/Volo.Abp/Volo/Abp/Localization/AbpCultureHelper.cs

@@ -2,7 +2,7 @@
 using System.Globalization;
 using JetBrains.Annotations;
 
-namespace Volo.Abp.Globalization
+namespace Volo.Abp.Localization
 {
     public static class AbpCultureHelper
     {

src/Volo.Abp/Volo/Abp/Localization/AbpDictionaryBasedStringLocalizer.cs

@@ -0,0 +1,173 @@
+using System;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Globalization;
+using Microsoft.Extensions.Localization;
+
+namespace Volo.Abp.Localization
+{
+    //TODO: Remove old/unused methods!
+
+    public class AbpDictionaryBasedStringLocalizer : IStringLocalizer
+    {
+        public LocalizationResource Resource { get; }
+
+        public AbpDictionaryBasedStringLocalizer(LocalizationResource resource)
+        {
+            Resource = resource;
+        }
+
+        public IEnumerable<LocalizedString> GetAllStrings(bool includeParentCultures)
+        {
+            return GetAllStrings(CultureInfo.CurrentUICulture.Name, includeParentCultures);
+        }
+
+        public IStringLocalizer WithCulture(CultureInfo culture)
+        {
+            throw new NotImplementedException();
+        }
+
+        LocalizedString IStringLocalizer.this[string name]
+        {
+            get { return GetString(name); }
+        }
+
+        LocalizedString IStringLocalizer.this[string name, params object[] arguments]
+        {
+            get
+            {
+                var localizedString = GetString(name);
+                return new LocalizedString(name, string.Format(localizedString.Value, arguments, localizedString.ResourceNotFound, localizedString.SearchedLocation));
+            }
+        }
+
+        public LocalizedString GetString(string name)
+        {
+            return GetString(name, CultureInfo.CurrentUICulture.Name);
+        }
+
+        /// <inheritdoc/>
+        public LocalizedString GetString(string name, string cultureName)
+        {
+            var value = GetStringOrNull(name, cultureName);
+
+            if (value == null)
+            {
+                return new LocalizedString(name, name, true);
+            }
+
+            return value;
+        }
+
+        public LocalizedString GetStringOrNull(string name, bool tryDefaults = true)
+        {
+            return GetStringOrNull(name, CultureInfo.CurrentUICulture.Name, tryDefaults);
+        }
+
+        public LocalizedString GetStringOrNull(string name, string cultureName, bool tryDefaults = true)
+        {
+            var dictionaries = Resource.DictionaryProvider.Dictionaries;
+
+            //Try to get from original dictionary (with country code)
+            ILocalizationDictionary originalDictionary;
+            if (dictionaries.TryGetValue(cultureName, out originalDictionary))
+            {
+                var strOriginal = originalDictionary.GetOrNull(name);
+                if (strOriginal != null)
+                {
+                    return new LocalizedString(name, strOriginal.Value);
+                }
+            }
+
+            if (!tryDefaults)
+            {
+                return null;
+            }
+
+            //Try to get from same language dictionary (without country code)
+            if (cultureName.Contains("-")) //Example: "tr-TR" (length=5)
+            {
+                ILocalizationDictionary langDictionary;
+                if (dictionaries.TryGetValue(GetBaseCultureName(cultureName), out langDictionary))
+                {
+                    var strLang = langDictionary.GetOrNull(name);
+                    if (strLang != null)
+                    {
+                        return new LocalizedString(name, strLang.Value);
+                    }
+                }
+            }
+
+            //Try to get from default language
+            var defaultDictionary = Resource.DictionaryProvider.Dictionaries[Resource.DefaultCultureName]; //TODO: What if not contains a default dictionary?
+            if (defaultDictionary == null)
+            {
+                return null;
+            }
+
+            var strDefault = defaultDictionary.GetOrNull(name);
+            if (strDefault == null)
+            {
+                return null;
+            }
+
+            return new LocalizedString(name, strDefault.Value);
+        }
+
+        /// <inheritdoc/>
+        public IReadOnlyList<LocalizedString> GetAllStrings(string cultureName, bool includeDefaults = true)
+        {
+            //TODO: Can be optimized (example: if it's already default dictionary, skip overriding)
+
+            var dictionaries = Resource.DictionaryProvider.Dictionaries;
+
+            //Create a temp dictionary to build
+            var allStrings = new Dictionary<string, LocalizedString>();
+
+            if (includeDefaults)
+            {
+                //Fill all strings from default dictionary
+                var defaultDictionary = Resource.DictionaryProvider.Dictionaries[Resource.DefaultCultureName]; //TODO: What if not contains a default dictionary?
+                if (defaultDictionary != null)
+                {
+                    foreach (var defaultDictString in defaultDictionary.GetAllStrings())
+                    {
+                        allStrings[defaultDictString.Name] = new LocalizedString(defaultDictString.Name, defaultDictString.Value);
+                    }
+                }
+
+                //Overwrite all strings from the language based on country culture
+                if (cultureName.Contains("-"))
+                {
+                    ILocalizationDictionary langDictionary;
+                    if (dictionaries.TryGetValue(GetBaseCultureName(cultureName), out langDictionary))
+                    {
+                        foreach (var langString in langDictionary.GetAllStrings())
+                        {
+                            allStrings[langString.Name] = new LocalizedString(langString.Name, langString.Value);
+                        }
+                    }
+                }
+            }
+
+            //Overwrite all strings from the original dictionary
+            ILocalizationDictionary originalDictionary;
+            if (dictionaries.TryGetValue(cultureName, out originalDictionary))
+            {
+                foreach (var originalLangString in originalDictionary.GetAllStrings())
+                {
+                    allStrings[originalLangString.Name] = new LocalizedString(originalLangString.Name, originalLangString.Value);
+                }
+            }
+
+            return allStrings.Values.ToImmutableList();
+        }
+
+        private static string GetBaseCultureName(string cultureName)
+        {
+            return cultureName.Contains("-")
+                ? cultureName.Left(cultureName.IndexOf("-", StringComparison.Ordinal))
+                : cultureName;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/AbpLocalizationOptions.cs

@@ -0,0 +1,13 @@
+namespace Volo.Abp.Localization
+{
+    public class AbpLocalizationOptions
+    {
+        public LocalizationResourceList Resources { get; }
+        public AbpStringLocalizerList Resolvers { get; }
+
+        public AbpLocalizationOptions()
+        {
+            Resources = new LocalizationResourceList();
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/AbpStringLocalizerFactory.cs

@@ -0,0 +1,76 @@
+using System;
+using System.Collections.Concurrent;
+using System.Linq;
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.DependencyInjection.Extensions;
+using Microsoft.Extensions.Localization;
+using Microsoft.Extensions.Options;
+using Volo.Abp.Localization.Json;
+
+namespace Volo.Abp.Localization
+{
+    public class AbpStringLocalizerFactory : IStringLocalizerFactory
+    {
+        private readonly ResourceManagerStringLocalizerFactory _innerFactory;
+        private readonly AbpLocalizationOptions _abpLocalizationOptions;
+        private readonly IServiceProvider _serviceProvider;
+
+        private readonly ConcurrentDictionary<Type, AbpDictionaryBasedStringLocalizer> _localizerCache;
+
+        //TODO: It's better to use decorator pattern for IStringLocalizerFactory instead of getting ResourceManagerStringLocalizerFactory as a dependency.
+        public AbpStringLocalizerFactory(
+            ResourceManagerStringLocalizerFactory innerFactory,
+            IOptions<AbpLocalizationOptions> abpLocalizationOptions, IServiceProvider serviceProvider)
+        {
+            _innerFactory = innerFactory;
+            _serviceProvider = serviceProvider;
+            _abpLocalizationOptions = abpLocalizationOptions.Value;
+
+            _localizerCache = new ConcurrentDictionary<Type, AbpDictionaryBasedStringLocalizer>();;
+        }
+
+        public virtual IStringLocalizer Create(Type resourceSource)
+        {
+            //TODO: Optimize!
+
+            var localizationResource = _abpLocalizationOptions.Resources.FirstOrDefault(l => l.ResourceType == resourceSource);
+            if (localizationResource == null)
+            {
+                return _innerFactory.Create(resourceSource);
+            }
+
+            return _localizerCache.GetOrAdd(resourceSource, _ => CreateAbpStringLocalizer(localizationResource));
+        }
+
+        private AbpDictionaryBasedStringLocalizer CreateAbpStringLocalizer(LocalizationResource resource)
+        {
+            resource.Initialize(_serviceProvider);
+
+            //Use JSON/XML/...etc based provider that reads resource from source and creates a dictionary
+            //Extend dictionary with extensions
+            //Wrap reader by wrappers (like db wrapper which implement multitenancy/regions and so on...)
+
+
+            //Notes: Localizer will be cached, so wrappers are responsible to cache/invalidate themselves!
+
+            var localizer = new AbpDictionaryBasedStringLocalizer(resource); //TODO: !!!
+
+            //TODO: Wrap with DB provider or other premium sources
+
+            return localizer;
+        }
+
+        public virtual IStringLocalizer Create(string baseName, string location)
+        {
+            //TODO: Investigate when this is called?
+
+            return _innerFactory.Create(baseName, location);
+        }
+
+        internal static void Replace(IServiceCollection services)
+        {
+            services.Replace(ServiceDescriptor.Singleton<IStringLocalizerFactory, AbpStringLocalizerFactory>());
+            services.AddSingleton<ResourceManagerStringLocalizerFactory>();
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/AbpStringLocalizerList.cs

@@ -0,0 +1,8 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization
+{
+    public class AbpStringLocalizerList : List<IAbpStringLocalizer>
+    {
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/IAbpStringLocalizer.cs

@@ -0,0 +1,6 @@
+namespace Volo.Abp.Localization
+{
+    public interface IAbpStringLocalizer
+    {
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/ILocalizationDictionary.cs

@@ -0,0 +1,31 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization
+{
+    /// <summary>
+    /// Represents a dictionary that is used to find a localized string.
+    /// </summary>
+    public interface ILocalizationDictionary
+    {
+        string CultureName { get; }
+
+        /// <summary>
+        /// Gets/sets a string for this dictionary with given name (key).
+        /// </summary>
+        /// <param name="name">Name to get/set</param>
+        LocalString this[string name] { get; set; }
+
+        /// <summary>
+        /// Gets a <see cref="LocalString"/> for given <paramref name="name"/>.
+        /// </summary>
+        /// <param name="name">Name (key) to get localized string</param>
+        /// <returns>The localized string or null if not found in this dictionary</returns>
+        LocalString GetOrNull(string name);
+
+        /// <summary>
+        /// Gets a list of all strings in this dictionary.
+        /// </summary>
+        /// <returns>List of all <see cref="LocalString"/> object</returns>
+        IReadOnlyList<LocalString> GetAllStrings();
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/ILocalizationDictionaryProvider.cs

@@ -0,0 +1,13 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization
+{
+    public interface ILocalizationDictionaryProvider
+    {
+        IDictionary<string, ILocalizationDictionary> Dictionaries { get; }
+
+        void Initialize(LocalizationResource resource);
+        
+        void Extend(ILocalizationDictionary dictionary);
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/Json/JsonEmbeddedFileLocalizationDictionaryProvider.cs

@@ -0,0 +1,48 @@
+using System.Reflection;
+using Volo.Abp.Internal;
+
+namespace Volo.Abp.Localization.Json
+{
+    /// <summary>
+    /// Provides localization dictionaries from JSON files embedded into an <see cref="Assembly"/>.
+    /// </summary>
+    public class JsonEmbeddedFileLocalizationDictionaryProvider : LocalizationDictionaryProviderBase
+    {
+        private readonly Assembly _assembly;
+        private readonly string _rootNamespace;
+
+        public JsonEmbeddedFileLocalizationDictionaryProvider(Assembly assembly, string rootNamespace)
+        {
+            _assembly = assembly;
+            _rootNamespace = rootNamespace;
+        }
+
+        public override void Initialize(LocalizationResource resource)
+        {
+            var resourceNames = _assembly.GetManifestResourceNames();
+            foreach (var resourceName in resourceNames)
+            {
+                if (resourceName.StartsWith(_rootNamespace))
+                {
+                    using (var stream = _assembly.GetManifestResourceStream(resourceName))
+                    {
+                        var jsonString = Utf8Helper.ReadStringFromStream(stream);
+
+                        var dictionary = CreateJsonLocalizationDictionary(jsonString);
+                        if (Dictionaries.ContainsKey(dictionary.CultureName))
+                        {
+                            throw new AbpException(resource.ResourceType.FullName + " source contains more than one dictionary for the culture: " + dictionary.CultureName);
+                        }
+
+                        Dictionaries[dictionary.CultureName] = dictionary;
+                    }
+                }
+            }
+        }
+
+        protected virtual JsonLocalizationDictionary CreateJsonLocalizationDictionary(string jsonString)
+        {
+            return JsonLocalizationDictionary.BuildFromJsonString(jsonString);
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/Json/JsonFileLocalizationDictionaryProvider.cs

@@ -0,0 +1,54 @@
+//using System.IO;
+//using Abp.Localization.Dictionaries.Xml;
+//using Abp.Localization.Sources;
+
+//namespace Abp.Localization.Dictionaries.Json
+//{
+//    /// <summary>
+//    ///     Provides localization dictionaries from json files in a directory.
+//    /// </summary>
+//    public class JsonFileLocalizationDictionaryProvider : LocalizationDictionaryProviderBase
+//    {
+//        private readonly string _directoryPath;
+
+//        /// <summary>
+//        ///     Creates a new <see cref="JsonFileLocalizationDictionaryProvider" />.
+//        /// </summary>
+//        /// <param name="directoryPath">Path of the dictionary that contains all related XML files</param>
+//        public JsonFileLocalizationDictionaryProvider(string directoryPath)
+//        {
+//            _directoryPath = directoryPath;
+//        }
+        
+//        public override void Initialize(string sourceName)
+//        {
+//            var fileNames = Directory.GetFiles(_directoryPath, "*.json", SearchOption.TopDirectoryOnly);
+
+//            foreach (var fileName in fileNames)
+//            {
+//                var dictionary = CreateJsonLocalizationDictionary(fileName);
+//                if (Dictionaries.ContainsKey(dictionary.CultureInfo.Name))
+//                {
+//                    throw new AbpInitializationException(sourceName + " source contains more than one dictionary for the culture: " + dictionary.CultureInfo.Name);
+//                }
+
+//                Dictionaries[dictionary.CultureInfo.Name] = dictionary;
+
+//                if (fileName.EndsWith(sourceName + ".json"))
+//                {
+//                    if (DefaultDictionary != null)
+//                    {
+//                        throw new AbpInitializationException("Only one default localization dictionary can be for source: " + sourceName);
+//                    }
+
+//                    DefaultDictionary = dictionary;
+//                }
+//            }
+//        }
+
+//        protected virtual JsonLocalizationDictionary CreateJsonLocalizationDictionary(string fileName)
+//        {
+//            return JsonLocalizationDictionary.BuildFromFile(fileName);
+//        }
+//    }
+//}

src/Volo.Abp/Volo/Abp/Localization/Json/JsonLocalizationDictionary.cs

@@ -0,0 +1,97 @@
+using System;
+using System.Collections.Generic;
+using System.Globalization;
+using System.IO;
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+
+namespace Volo.Abp.Localization.Json
+{
+    /// <summary>
+    ///     This class is used to build a localization dictionary from json.
+    /// </summary>
+    /// <remarks>
+    ///     Use static Build methods to create instance of this class.
+    /// </remarks>
+    public class JsonLocalizationDictionary : LocalizationDictionary
+    {
+        /// <summary>
+        ///     Private constructor.
+        /// </summary>
+        /// <param name="cultureName">Culture of the dictionary</param>
+        private JsonLocalizationDictionary(string cultureName)
+            : base(cultureName)
+        {
+        }
+
+        /// <summary>
+        ///     Builds an <see cref="JsonLocalizationDictionary" /> from given file.
+        /// </summary>
+        /// <param name="filePath">Path of the file</param>
+        public static JsonLocalizationDictionary BuildFromFile(string filePath)
+        {
+            try
+            {
+                return BuildFromJsonString(File.ReadAllText(filePath));
+            }
+            catch (Exception ex)
+            {
+                throw new AbpException("Invalid localization file format! " + filePath, ex);
+            }
+        }
+
+        /// <summary>
+        ///     Builds an <see cref="JsonLocalizationDictionary" /> from given json string.
+        /// </summary>
+        /// <param name="jsonString">Json string</param>
+        public static JsonLocalizationDictionary BuildFromJsonString(string jsonString)
+        {
+            JsonLocalizationFile jsonFile;
+            try
+            {
+                jsonFile = JsonConvert.DeserializeObject<JsonLocalizationFile>(
+                    jsonString,
+                    new JsonSerializerSettings
+                    {
+                        ContractResolver = new CamelCasePropertyNamesContractResolver()
+                    });
+            }
+            catch (JsonException ex)
+            {
+                throw new AbpException("Can not parse json string. " + ex.Message);
+            }
+
+            var cultureCode = jsonFile.Culture;
+            if (string.IsNullOrEmpty(cultureCode))
+            {
+                throw new AbpException("Culture is empty in language json file.");
+            }
+
+            var dictionary = new JsonLocalizationDictionary(cultureCode);
+            var dublicateNames = new List<string>();
+            foreach (var item in jsonFile.Texts)
+            {
+                if (string.IsNullOrEmpty(item.Key))
+                {
+                    throw new AbpException("The key is empty in given json string.");
+                }
+
+                if (dictionary.Contains(item.Key))
+                {
+                    dublicateNames.Add(item.Key);
+                }
+
+                dictionary[item.Key] = new LocalString(item.Key, item.Value.NormalizeLineEndings());
+            }
+
+            if (dublicateNames.Count > 0)
+            {
+                throw new AbpException(
+                    "A dictionary can not contain same key twice. There are some duplicated names: " +
+                    dublicateNames.JoinAsString(", "));
+            }
+
+            return dictionary;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/Json/JsonLocalizationFile.cs

@@ -0,0 +1,19 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization.Json
+{
+    public class JsonLocalizationFile
+    {
+        /// <summary>
+        /// Culture name; eg : en , en-us, zh-CN
+        /// </summary>
+        public string Culture { get; set; }
+
+        public Dictionary<string, string> Texts { get; }
+
+        public JsonLocalizationFile()
+        {
+            Texts = new Dictionary<string, string>();
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalString.cs

@@ -0,0 +1,15 @@
+namespace Volo.Abp.Localization
+{
+    public class LocalString
+    {
+        public string Name { get; set; }
+
+        public string Value { get; set; }
+
+        public LocalString(string name, string value)
+        {
+            Name = name;
+            Value = value;
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalizationDictionary.cs

@@ -0,0 +1,68 @@
+using System.Collections;
+using System.Collections.Generic;
+using System.Collections.Immutable;
+using System.Globalization;
+
+namespace Volo.Abp.Localization
+{
+    /// <summary>
+    /// Represents a simple implementation of <see cref="ILocalizationDictionary"/> interface.
+    /// </summary>
+    public class LocalizationDictionary : ILocalizationDictionary, IEnumerable<LocalString>
+    {
+        /// <inheritdoc/>
+        public string CultureName { get; private set; }
+
+        /// <inheritdoc/>
+        public virtual LocalString this[string name]
+        {
+            get
+            {
+                var localizedString = GetOrNull(name);
+                return localizedString == null ? null : localizedString;
+            }
+            set { _dictionary[name] = value; }
+        }
+
+        private readonly Dictionary<string, LocalString> _dictionary;
+
+        /// <summary>
+        /// Creates a new <see cref="LocalizationDictionary"/> object.
+        /// </summary>
+        /// <param name="cultureName">Culture of the dictionary</param>
+        public LocalizationDictionary(string cultureName)
+        {
+            CultureName = cultureName;
+            _dictionary = new Dictionary<string, LocalString>();
+        }
+
+        /// <inheritdoc/>
+        public virtual LocalString GetOrNull(string name)
+        {
+            LocalString localizedString;
+            return _dictionary.TryGetValue(name, out localizedString) ? localizedString : null;
+        }
+
+        /// <inheritdoc/>
+        public virtual IReadOnlyList<LocalString> GetAllStrings()
+        {
+            return _dictionary.Values.ToImmutableList();
+        }
+
+        /// <inheritdoc/>
+        public virtual IEnumerator<LocalString> GetEnumerator()
+        {
+            return GetAllStrings().GetEnumerator();
+        }
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return GetAllStrings().GetEnumerator();
+        }
+
+        protected bool Contains(string name)
+        {
+            return _dictionary.ContainsKey(name);
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalizationDictionaryProviderBase.cs

@@ -0,0 +1,41 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization
+{
+    public abstract class LocalizationDictionaryProviderBase : ILocalizationDictionaryProvider
+    {
+        public LocalizationResource ResourceType { get; private set; }
+
+        public ILocalizationDictionary DefaultDictionary { get; protected set; }
+
+        public IDictionary<string, ILocalizationDictionary> Dictionaries { get; private set; }
+
+        protected LocalizationDictionaryProviderBase()
+        {
+            Dictionaries = new Dictionary<string, ILocalizationDictionary>();
+        }
+
+        public virtual void Initialize(LocalizationResource resourceType)
+        {
+            ResourceType = resourceType;
+        }
+
+        public void Extend(ILocalizationDictionary dictionary)
+        {
+            //Add
+            ILocalizationDictionary existingDictionary;
+            if (!Dictionaries.TryGetValue(dictionary.CultureName, out existingDictionary))
+            {
+                Dictionaries[dictionary.CultureName] = dictionary;
+                return;
+            }
+
+            //Override
+            var localizedStrings = dictionary.GetAllStrings();
+            foreach (var localizedString in localizedStrings)
+            {
+                existingDictionary[localizedString.Name] = localizedString;
+            }
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalizationResource.cs

@@ -0,0 +1,39 @@
+using System;
+using JetBrains.Annotations;
+
+namespace Volo.Abp.Localization
+{
+    public class LocalizationResource
+    {
+        public Type ResourceType { get; }
+
+        public string DefaultCultureName { get; set; }
+
+        public ILocalizationDictionaryProvider DictionaryProvider
+        {
+            get => _dictionaryProvider;
+            set
+            {
+                Check.NotNull(value, nameof(value));
+                _dictionaryProvider = value;
+            }
+        }
+        private ILocalizationDictionaryProvider _dictionaryProvider;
+
+        public LocalizationResource([NotNull] Type resourceType, [NotNull] string defaultCultureName, [NotNull] ILocalizationDictionaryProvider dictionaryProvider)
+        {
+            Check.NotNull(resourceType, nameof(resourceType));
+            Check.NotNull(defaultCultureName, nameof(defaultCultureName));
+            Check.NotNull(dictionaryProvider, nameof(dictionaryProvider));
+
+            ResourceType = resourceType;
+            DefaultCultureName = defaultCultureName;
+            DictionaryProvider = dictionaryProvider;
+        }
+
+        public virtual void Initialize(IServiceProvider serviceProvider) //TODO: Create a LocalizationResourceInitializationContext!
+        {
+            DictionaryProvider.Initialize(this);
+        }
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalizationResourceList.cs

@@ -0,0 +1,9 @@
+using System.Collections.Generic;
+
+namespace Volo.Abp.Localization
+{
+    public class LocalizationResourceList : List<LocalizationResource>
+    {
+        
+    }
+}

src/Volo.Abp/Volo/Abp/Localization/LocalizationResourceListExtensions.cs

@@ -0,0 +1,24 @@
+using JetBrains.Annotations;
+using Volo.Abp.Localization.Json;
+
+namespace Volo.Abp.Localization
+{
+    public static class LocalizationResourceListExtensions
+    {
+        public static void AddJson<TResource>(this LocalizationResourceList resourceList, [NotNull] string defaultCultureName)
+        {
+            var type = typeof(TResource);
+
+            resourceList.Add(
+                new LocalizationResource(
+                    type,
+                    defaultCultureName,
+                    new JsonEmbeddedFileLocalizationDictionaryProvider(
+                        type.Assembly,
+                        type.Namespace
+                    )
+                )
+            );
+        }
+    }
+}

test/Volo.Abp.AspNetCore.Mvc.Tests/Volo/Abp/AspNetCore/Mvc/Localization/MvcLocalization_Tests.cs

@@ -8,7 +8,7 @@ namespace Volo.Abp.AspNetCore.Mvc.Localization
 {
     public class MvcLocalization_Tests : AspNetCoreMvcTestBase
     {
-        private readonly IStringLocalizer _localizer;
+        private readonly IStringLocalizer<MvcLocalization_Tests> _localizer;
 
         public MvcLocalization_Tests()
         {

test/Volo.Abp.Tests/System/StringExtensions_Tests.cs

@@ -1,5 +1,5 @@
 using Shouldly;
-using Volo.Abp.Globalization;
+using Volo.Abp.Localization;
 using Xunit;
 
 namespace System

test/Volo.Abp.Tests/Volo.Abp.Tests.csproj

@@ -15,6 +15,16 @@
     <EmbeddedResource Include="Volo\Abp\EmbeddedFiles\MyResources\js\*.js" Exclude="bin\**;obj\**;**\*.xproj;packages\**;@(EmbeddedResource)" />
   </ItemGroup>
 
+  <ItemGroup>
+    <None Remove="Volo\Abp\Localization\Source\en.json" />
+    <None Remove="Volo\Abp\Localization\Source\tr.json" />
+  </ItemGroup>
+
+  <ItemGroup>
+    <EmbeddedResource Include="Volo\Abp\Localization\Source\en.json" />
+    <EmbeddedResource Include="Volo\Abp\Localization\Source\tr.json" />
+  </ItemGroup>
+
   <ItemGroup>
     <ProjectReference Include="..\..\src\Volo.Abp.Autofac\Volo.Abp.Autofac.csproj" />
     <ProjectReference Include="..\AbpTestBase\AbpTestBase.csproj" />

test/Volo.Abp.Tests/Volo/Abp/DependencyInjection/DependencyInjection_Tests.cs

@@ -0,0 +1,108 @@
+using System;
+using System.Collections.Generic;
+using Microsoft.Extensions.DependencyInjection;
+using Shouldly;
+using Xunit;
+
+namespace Volo.Abp.DependencyInjection
+{
+    public class DependencyInjection_Tests
+    {
+        [Fact]
+        public void Singletons_Should_Resolve_Transients_Independent_From_Current_Scope()
+        {
+            //Arrange
+
+            var services = new ServiceCollection();
+
+            services
+                .AddSingleton<MySingletonService>()
+                .AddTransient<MyTransientServiceUsesSingleton>()
+                .AddTransient<MyTransientService>();
+
+            MySingletonService singletonService;
+
+            using (var serviceProvider = services.BuildServiceProvider())
+            {
+                //Act
+
+                using (var scope = serviceProvider.CreateScope())
+                {
+                    scope.ServiceProvider.GetRequiredService<MyTransientServiceUsesSingleton>().DoIt();
+                    scope.ServiceProvider.GetRequiredService<MyTransientServiceUsesSingleton>().DoIt();
+                }
+
+                using (var scope = serviceProvider.CreateScope())
+                {
+                    scope.ServiceProvider.GetRequiredService<MyTransientServiceUsesSingleton>().DoIt();
+                    scope.ServiceProvider.GetRequiredService<MyTransientServiceUsesSingleton>().DoIt();
+                    scope.ServiceProvider.GetRequiredService<MySingletonService>().ShouldNotBeDisposed();
+                }
+
+                singletonService = serviceProvider.GetRequiredService<MySingletonService>();
+                singletonService.ShouldNotBeDisposed();
+            }
+
+            singletonService.ShouldBeDisposed();
+        }
+
+        private class MyTransientServiceUsesSingleton
+        {
+            private readonly MySingletonService _singletonService;
+
+            public MyTransientServiceUsesSingleton(MySingletonService singletonService)
+            {
+                _singletonService = singletonService;
+            }
+
+            public void DoIt()
+            {
+                _singletonService.DoIt();
+            }
+        }
+
+        private class MySingletonService
+        {
+            private readonly IServiceProvider _serviceProvider;
+
+            private readonly List<MyTransientService> _instances;
+
+            public MySingletonService(IServiceProvider serviceProvider)
+            {
+                _serviceProvider = serviceProvider;
+                _instances = new List<MyTransientService>();
+            }
+
+            public void DoIt()
+            {
+                _instances.Add(_serviceProvider.GetRequiredService<MyTransientService>());
+            }
+
+            public void ShouldNotBeDisposed()
+            {
+                foreach (var instance in _instances)
+                {
+                    instance.IsDisposed.ShouldBeFalse();
+                }
+            }
+
+            public void ShouldBeDisposed()
+            {
+                foreach (var instance in _instances)
+                {
+                    instance.IsDisposed.ShouldBeTrue();
+                }
+            }
+        }
+
+        private class MyTransientService : IDisposable
+        {
+            public bool IsDisposed { get; private set; }
+
+            public void Dispose()
+            {
+                IsDisposed = true;
+            }
+        }
+    }
+}

test/Volo.Abp.Tests/Volo/Abp/Localization/AbpLocalization_Tests.cs

@@ -0,0 +1,56 @@
+using Microsoft.Extensions.DependencyInjection;
+using Microsoft.Extensions.Localization;
+using Shouldly;
+using Volo.Abp.Localization.Source;
+using Volo.Abp.Modularity;
+using Volo.Abp.TestBase;
+using Xunit;
+
+namespace Volo.Abp.Localization
+{
+    public class AbpLocalization_Tests : AbpIntegratedTest<AbpLocalization_Tests.TestModule>
+    {
+        private readonly IStringLocalizer<LocalizationTestResource> _localizer;
+
+        public AbpLocalization_Tests()
+        {
+            _localizer = GetRequiredService<IStringLocalizer<LocalizationTestResource>>();
+        }
+
+        [Fact]
+        public void Should_Get_Same_Text_If_Not_Defined_Anywhere()
+        {
+            const string text = "A string that is not defined anywhere!";
+
+            _localizer[text].Value.ShouldBe(text);
+        }
+
+        [Fact]
+        public void Should_Get_Localized_Text_If_Defined_In_Current_Culture()
+        {
+            using (AbpCultureHelper.Use("en"))
+            {
+                _localizer["Car"].Value.ShouldBe("Car");
+                _localizer["CarPlural"].Value.ShouldBe("Cars");
+            }
+
+            using (AbpCultureHelper.Use("tr"))
+            {
+                _localizer["Car"].Value.ShouldBe("Araba");
+                _localizer["CarPlural"].Value.ShouldBe("Araba");
+            }
+        }
+        
+        [DependsOn(typeof(AbpTestBaseModule))]
+        public class TestModule : AbpModule
+        {
+            public override void ConfigureServices(IServiceCollection services)
+            {
+                services.Configure<AbpLocalizationOptions>(options =>
+                {
+                    options.Resources.AddJson<LocalizationTestResource>("en");
+                });
+            }
+        }
+    }
+}

test/Volo.Abp.Tests/Volo/Abp/Localization/Source/LocalizationTestResource.cs

@@ -0,0 +1,7 @@
+namespace Volo.Abp.Localization.Source
+{
+    public sealed class LocalizationTestResource
+    {
+        
+    }
+}

test/Volo.Abp.Tests/Volo/Abp/Localization/Source/en.json

@@ -0,0 +1,8 @@
+{
+  "culture": "en",
+  "texts": {
+    "Hello <b>{0}</b>.": "Hello <b>{0}</b>",
+    "Car": "Car",
+    "CarPlural": "Cars"
+  }
+}

test/Volo.Abp.Tests/Volo/Abp/Localization/Source/tr.json

@@ -0,0 +1,8 @@
+{
+  "culture": "tr",
+  "texts": {
+    "Hello <b>{0}</b>.": "Merhaba <b>{0}</b>",
+    "Car": "Araba",
+    "CarPlural": "Araba"
+  }
+}