Enable #nullable for mysql storage.

src/DotNetCore.CAP.InMemoryStorage/IMonitoringApi.InMemory.cs

@@ -15,14 +15,14 @@ namespace DotNetCore.CAP.InMemoryStorage
 {
     internal class InMemoryMonitoringApi : IMonitoringApi
     {
-        public Task<MediumMessage> GetPublishedMessageAsync(long id)
+        public Task<MediumMessage?> GetPublishedMessageAsync(long id)
         {
-            return Task.FromResult((MediumMessage)InMemoryStorage.PublishedMessages.Values.FirstOrDefault(x => x.DbId == id.ToString(CultureInfo.InvariantCulture)));
+            return Task.FromResult<MediumMessage?>(InMemoryStorage.PublishedMessages.Values.FirstOrDefault(x => x.DbId == id.ToString(CultureInfo.InvariantCulture)));
         }
 
-        public Task<MediumMessage> GetReceivedMessageAsync(long id)
+        public Task<MediumMessage?> GetReceivedMessageAsync(long id)
         {
-            return Task.FromResult((MediumMessage)InMemoryStorage.ReceivedMessages.Values.FirstOrDefault(x => x.DbId == id.ToString(CultureInfo.InvariantCulture)));
+            return Task.FromResult<MediumMessage?>(InMemoryStorage.ReceivedMessages.Values.FirstOrDefault(x => x.DbId == id.ToString(CultureInfo.InvariantCulture)));
         }
 
         public StatisticsDto GetStatistics()

src/DotNetCore.CAP.MySql/CAP.EFOptions.cs

@@ -18,7 +18,7 @@ namespace DotNetCore.CAP
         /// <summary>
         /// EF db context type.
         /// </summary>
-        internal Type DbContextType { get; set; }
+        internal Type? DbContextType { get; set; }
 
         /// <summary>
         /// Data version

src/DotNetCore.CAP.MySql/CAP.MySqlOptions.cs

@@ -13,7 +13,7 @@ namespace DotNetCore.CAP
         /// <summary>
         /// Gets or sets the database's connection string that will be used to store database entities.
         /// </summary>
-        public string ConnectionString { get; set; }
+        public string ConnectionString { get; set; } = default!;
     }
 
     internal class ConfigureMySqlOptions : IConfigureOptions<MySqlOptions>

src/DotNetCore.CAP.MySql/DotNetCore.CAP.MySql.csproj

@@ -2,15 +2,9 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>net6.0;netstandard2.1</TargetFrameworks>
-		<AssemblyName>DotNetCore.CAP.MySql</AssemblyName>
+		<Nullable>enable</Nullable>
 		<PackageTags>$(PackageTags);MySQL</PackageTags>
 	</PropertyGroup>
-
-	<PropertyGroup>
-		<DocumentationFile>bin\$(Configuration)\netstandard2.1\DotNetCore.CAP.MySql.xml</DocumentationFile>
-		<NoWarn>1701;1702;1705;CS1591</NoWarn>
-	</PropertyGroup>
-
  
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.0" />

src/DotNetCore.CAP.MySql/IDataStorage.MySql.cs

@@ -46,7 +46,7 @@ namespace DotNetCore.CAP.MySql
         public async Task ChangeReceiveStateAsync(MediumMessage message, StatusName state) =>
             await ChangeMessageStateAsync(_recName, message, state);
 
-        public MediumMessage StoreMessage(string name, Message content, object dbTransaction = null)
+        public MediumMessage StoreMessage(string name, Message content, object? dbTransaction = null)
         {
             var sql = $"INSERT INTO `{_pubName}`(`Id`,`Version`,`Name`,`Content`,`Retries`,`Added`,`ExpiresAt`,`StatusName`)" +
                       $" VALUES(@Id,'{_options.Value.Version}',@Name,@Content,@Retries,@Added,@ExpiresAt,@StatusName);";
@@ -68,7 +68,7 @@ namespace DotNetCore.CAP.MySql
                 new MySqlParameter("@Content", message.Content),
                 new MySqlParameter("@Retries", message.Retries),
                 new MySqlParameter("@Added", message.Added),
-                new MySqlParameter("@ExpiresAt", message.ExpiresAt.HasValue ? (object)message.ExpiresAt.Value : DBNull.Value),
+                new MySqlParameter("@ExpiresAt", message.ExpiresAt.HasValue ? message.ExpiresAt.Value : DBNull.Value),
                 new MySqlParameter("@StatusName", nameof(StatusName.Scheduled)),
             };
 
@@ -85,7 +85,7 @@ namespace DotNetCore.CAP.MySql
                     dbTrans = dbContextTrans.GetDbTransaction();
                 }
 
-                var conn = dbTrans?.Connection;
+                var conn = dbTrans!.Connection!;
                 conn.ExecuteNonQuery(sql, dbTrans, sqlParams);
             }
 
@@ -128,7 +128,7 @@ namespace DotNetCore.CAP.MySql
                 new MySqlParameter("@Content", _serializer.Serialize(mdMessage.Origin)),
                 new MySqlParameter("@Retries", mdMessage.Retries),
                 new MySqlParameter("@Added", mdMessage.Added),
-                new MySqlParameter("@ExpiresAt", mdMessage.ExpiresAt.HasValue ? (object) mdMessage.ExpiresAt.Value : DBNull.Value),
+                new MySqlParameter("@ExpiresAt", mdMessage.ExpiresAt.HasValue ? mdMessage.ExpiresAt.Value : DBNull.Value),
                 new MySqlParameter("@StatusName", nameof(StatusName.Scheduled))
             };
 
@@ -198,7 +198,7 @@ namespace DotNetCore.CAP.MySql
                     messages.Add(new MediumMessage
                     {
                         DbId = reader.GetInt64(0).ToString(),
-                        Origin = _serializer.Deserialize(reader.GetString(1)),
+                        Origin = _serializer.Deserialize(reader.GetString(1))!,
                         Retries = reader.GetInt32(2),
                         Added = reader.GetDateTime(3)
                     });

src/DotNetCore.CAP.MySql/IDbConnection.Extensions.cs

@@ -9,7 +9,7 @@ namespace DotNetCore.CAP.MySql
 {
     internal static class DbConnectionExtensions
     {
-        public static int ExecuteNonQuery(this IDbConnection connection, string sql, IDbTransaction transaction = null,
+        public static int ExecuteNonQuery(this IDbConnection connection, string sql, IDbTransaction? transaction = null,
             params object[] sqlParams)
         {
             if (connection.State == ConnectionState.Closed)
@@ -33,7 +33,7 @@ namespace DotNetCore.CAP.MySql
             return command.ExecuteNonQuery();
         }
 
-        public static T ExecuteReader<T>(this IDbConnection connection, string sql, Func<IDataReader, T> readerFunc,
+        public static T ExecuteReader<T>(this IDbConnection connection, string sql, Func<IDataReader, T>? readerFunc,
             params object[] sqlParams)
         {
             if (connection.State == ConnectionState.Closed)
@@ -51,7 +51,7 @@ namespace DotNetCore.CAP.MySql
 
             var reader = command.ExecuteReader();
 
-            T result = default;
+            T result = default!;
             if (readerFunc != null)
             {
                 result = readerFunc(reader);
@@ -77,14 +77,14 @@ namespace DotNetCore.CAP.MySql
 
             var objValue = command.ExecuteScalar();
 
-            T result = default;
+            T result = default!;
             if (objValue != null)
             {
                 var returnType = typeof(T);
                 var converter = TypeDescriptor.GetConverter(returnType);
                 if (converter.CanConvertFrom(objValue.GetType()))
                 {
-                    result = (T)converter.ConvertFrom(objValue);
+                    result = (T)converter.ConvertFrom(objValue)!;
                 }
                 else
                 {

src/DotNetCore.CAP.MySql/IDbContextTransaction.CAP.cs

@@ -19,7 +19,7 @@ namespace Microsoft.EntityFrameworkCore.Storage
         public CapEFDbTransaction(ICapTransaction transaction)
         {
             _transaction = transaction;
-            var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction;
+            var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction!;
             TransactionId = dbContextTransaction.TransactionId;
         }
 
@@ -60,7 +60,7 @@ namespace Microsoft.EntityFrameworkCore.Storage
         {
             get
             {
-                var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction;
+                var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction!;
                 return dbContextTransaction.GetDbTransaction();
             }
         }

src/DotNetCore.CAP.MySql/IMonitoringApi.MySql.cs

@@ -247,18 +247,18 @@ WHERE `Key` >= @minKey
             return result;
         }
 
-        public async Task<MediumMessage> GetPublishedMessageAsync(long id) => await GetMessageAsync(_pubName, id);
+        public async Task<MediumMessage?> GetPublishedMessageAsync(long id) => await GetMessageAsync(_pubName, id);
 
-        public async Task<MediumMessage> GetReceivedMessageAsync(long id) => await GetMessageAsync(_recName, id);
+        public async Task<MediumMessage?> GetReceivedMessageAsync(long id) => await GetMessageAsync(_recName, id);
 
-        private async Task<MediumMessage> GetMessageAsync(string tableName, long id)
+        private async Task<MediumMessage?> GetMessageAsync(string tableName, long id)
         {
             var sql = $@"SELECT `Id` as DbId, `Content`,`Added`,`ExpiresAt`,`Retries` FROM `{tableName}` WHERE Id={id};";
 
             await using var connection = new MySqlConnection(_options.ConnectionString);
             var mediumMessage = connection.ExecuteReader(sql, reader =>
             {
-                MediumMessage message = null;
+                MediumMessage? message = null;
 
                 while (reader.Read())
                 {

src/DotNetCore.CAP/Monitoring/IMonitoringApi.cs

@@ -11,9 +11,9 @@ namespace DotNetCore.CAP.Monitoring
 {
     public interface IMonitoringApi
     {
-        Task<MediumMessage> GetPublishedMessageAsync(long id);
+        Task<MediumMessage?> GetPublishedMessageAsync(long id);
 
-        Task<MediumMessage> GetReceivedMessageAsync(long id);
+        Task<MediumMessage?> GetReceivedMessageAsync(long id);
 
         StatisticsDto GetStatistics();