Support multiple usages of the attribute

framework/src/Volo.Abp.Ddd.Domain/Volo/Abp/DependencyInjection/AbpCommonDbContextRegistrationOptions.cs

@@ -55,7 +55,7 @@ namespace Volo.Abp.DependencyInjection
                 throw new AbpException($"{OriginalDbContextType.AssemblyQualifiedName} should inherit/implement {otherDbContextType.AssemblyQualifiedName}!");
             }
 
-            ReplacedDbContextTypes.Add(otherDbContextType);
+            ReplacedDbContextTypes.AddIfNotContains(otherDbContextType);
 
             return this;
         }
@@ -93,9 +93,9 @@ namespace Volo.Abp.DependencyInjection
         public IAbpCommonDbContextRegistrationOptionsBuilder AddDefaultRepository(Type entityType)
         {
             EntityHelper.CheckEntity(entityType);
-            
+
             SpecifiedDefaultRepositories.AddIfNotContains(entityType);
-            
+
             return this;
         }
 

framework/src/Volo.Abp.Ddd.Domain/Volo/Abp/DependencyInjection/ReplaceDbContextAttribute.cs

@@ -2,7 +2,7 @@
 
 namespace Volo.Abp.DependencyInjection
 {
-    [AttributeUsage(AttributeTargets.Class)]
+    [AttributeUsage(AttributeTargets.Class, AllowMultiple = true)]
     public class ReplaceDbContextAttribute : Attribute
     {
         public Type[] ReplacedDbContextTypes { get; }

framework/src/Volo.Abp.EntityFrameworkCore/Microsoft/Extensions/DependencyInjection/AbpEfCoreServiceCollectionExtensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Reflection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Volo.Abp.DependencyInjection;
@@ -18,10 +19,12 @@ namespace Microsoft.Extensions.DependencyInjection
 
             var options = new AbpDbContextRegistrationOptions(typeof(TDbContext), services);
 
-            var replaceDbContextAttribute = typeof(TDbContext).GetCustomAttribute<ReplaceDbContextAttribute>(true);
-            if (replaceDbContextAttribute != null)
+            var replacedDbContextTypes = typeof(TDbContext).GetCustomAttributes<ReplaceDbContextAttribute>(true)
+                .SelectMany( x => x.ReplacedDbContextTypes).ToList();
+
+            foreach (var dbContextType in replacedDbContextTypes)
             {
-                options.ReplacedDbContextTypes.AddRange(replaceDbContextAttribute.ReplacedDbContextTypes);
+                options.ReplaceDbContext(dbContextType);
             }
 
             optionsBuilder?.Invoke(options);

framework/src/Volo.Abp.MongoDB/Microsoft/Extensions/DependencyInjection/AbpMongoDbServiceCollectionExtensions.cs

@@ -1,4 +1,5 @@
 using System;
+using System.Linq;
 using System.Reflection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 using Volo.Abp.DependencyInjection;
@@ -14,10 +15,12 @@ namespace Microsoft.Extensions.DependencyInjection
         {
             var options = new AbpMongoDbContextRegistrationOptions(typeof(TMongoDbContext), services);
 
-            var replaceDbContextAttribute = typeof(TMongoDbContext).GetCustomAttribute<ReplaceDbContextAttribute>(true);
-            if (replaceDbContextAttribute != null)
+            var replacedDbContextTypes = typeof(TMongoDbContext).GetCustomAttributes<ReplaceDbContextAttribute>(true)
+                .SelectMany( x => x.ReplacedDbContextTypes).ToList();
+
+            foreach (var dbContextType in replacedDbContextTypes)
             {
-                options.ReplacedDbContextTypes.AddRange(replaceDbContextAttribute.ReplacedDbContextTypes);
+                options.ReplaceDbContext(dbContextType);
             }
 
             optionsBuilder?.Invoke(options);