feat(data-protection): 关键字解析返回表达式树

aspnet-core/framework/data-protection/LINGYUN.Abp.DataProtection/LINGYUN/Abp/DataProtection/DataAccessKeywordContributorContext.cs

@@ -4,8 +4,12 @@ namespace LINGYUN.Abp.DataProtection;
 public class DataAccessKeywordContributorContext
 {
     public IServiceProvider ServiceProvider { get; }
-    public DataAccessKeywordContributorContext(IServiceProvider serviceProvider)
+    public Type ConversionType { get; }
+    public DataAccessKeywordContributorContext(
+        IServiceProvider serviceProvider,
+        Type conversionType)
     {
         ServiceProvider = serviceProvider;
+        ConversionType = conversionType;
     }
 }

aspnet-core/framework/data-protection/LINGYUN.Abp.DataProtection/LINGYUN/Abp/DataProtection/EntityTypeFilterBuilder.cs

@@ -240,10 +240,8 @@ public class EntityTypeFilterBuilder : IEntityTypeFilterBuilder, ITransientDepen
     {
         if (_options.KeywordContributors.TryGetValue(rule.Value?.ToString() ?? "", out var contributor))
         {
-            var context = new DataAccessKeywordContributorContext(_serviceProvider);
-            var keyValue = contributor.Contribute(context);
-            var value = CastTo(keyValue, conversionType);
-            return Expression.Constant(value, conversionType);
+            var context = new DataAccessKeywordContributorContext(_serviceProvider, conversionType);
+            return contributor.Contribute(context);
         }
         else
         {

aspnet-core/framework/data-protection/LINGYUN.Abp.DataProtection/LINGYUN/Abp/DataProtection/IDataAccessKeywordContributor.cs

@@ -1,6 +1,8 @@
-namespace LINGYUN.Abp.DataProtection;
+using System.Linq.Expressions;
+
+namespace LINGYUN.Abp.DataProtection;
 public interface IDataAccessKeywordContributor
 {
     string Keyword { get; }
-    object Contribute(DataAccessKeywordContributorContext context);
+    Expression Contribute(DataAccessKeywordContributorContext context);
 }

aspnet-core/framework/data-protection/LINGYUN.Abp.DataProtection/LINGYUN/Abp/DataProtection/Keywords/DataAccessCurrentUserContributor.cs

@@ -1,4 +1,8 @@
 using Microsoft.Extensions.DependencyInjection;
+using System;
+using System.ComponentModel;
+using System.Globalization;
+using System.Linq.Expressions;
 using Volo.Abp.Users;
 
 namespace LINGYUN.Abp.DataProtection.Keywords;
@@ -7,9 +11,22 @@ public class DataAccessCurrentUserContributor : IDataAccessKeywordContributor
     public const string Name = "@CurrentUser";
     public string Keyword => Name;
 
-    public object Contribute(DataAccessKeywordContributorContext context)
+    public Expression Contribute(DataAccessKeywordContributorContext context)
     {
         var currentUser = context.ServiceProvider.GetRequiredService<ICurrentUser>();
-        return currentUser.Id;
+
+        var userId = CastTo(currentUser.Id, context.ConversionType);
+
+        // entity.Where(x => x.CreatorId == CurrentUser.Id);
+        return Expression.Constant(userId, context.ConversionType);
+    }
+
+    private static object CastTo(object value, Type conversionType)
+    {
+        if (conversionType == typeof(Guid) || conversionType == typeof(Guid?))
+        {
+            return TypeDescriptor.GetConverter(conversionType).ConvertFromInvariantString(value.ToString()!)!;
+        }
+        return Convert.ChangeType(value, conversionType, CultureInfo.InvariantCulture);
     }
 }