Enable #nullable for postgresql storage.

src/Directory.Build.props

@@ -26,7 +26,6 @@
 
   <ItemGroup>
     <PackageReference Include="Microsoft.SourceLink.GitHub" Version="1.1.1" PrivateAssets="All"/>
-    <PackageReference Include="JetBrains.Annotations" Version="2021.3.0" PrivateAssets="All" />
   </ItemGroup>
 
 </Project>

src/DotNetCore.CAP.PostgreSql/CAP.EFOptions.cs

@@ -16,11 +16,11 @@ namespace DotNetCore.CAP
         /// </summary>
         public string Schema { get; set; } = DefaultSchema;
 
-        internal Type DbContextType { get; set; }
+        internal Type? DbContextType { get; set; }
 
         /// <summary>
         /// Data version
         /// </summary>
-        internal string Version { get; set; }
+        internal string Version { get; set; } = default!;
     }
 }

src/DotNetCore.CAP.PostgreSql/CAP.PostgreSqlOptions.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 ConfigurePostgreSqlOptions : IConfigureOptions<PostgreSqlOptions>

src/DotNetCore.CAP.PostgreSql/DotNetCore.CAP.PostgreSql.csproj

@@ -2,15 +2,10 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>net6.0;netstandard2.1</TargetFrameworks>
-		<AssemblyName>DotNetCore.CAP.PostgreSql</AssemblyName>
+		<Nullable>enable</Nullable>
 		<PackageTags>$(PackageTags);PostgreSQL</PackageTags>
 	</PropertyGroup>
 
-	<PropertyGroup>
-		<DocumentationFile>bin\$(Configuration)\netstandard2.1\DotNetCore.CAP.PostgreSql.xml</DocumentationFile>
-		<NoWarn>1701;1702;1705;CS1591</NoWarn>
-	</PropertyGroup>
-
 	<ItemGroup Condition=" '$(TargetFramework)' == 'net6.0' ">
 		<PackageReference Include="Microsoft.EntityFrameworkCore" Version="6.0.0" />
 		<PackageReference Include="Microsoft.EntityFrameworkCore.Relational" Version="6.0.0" />

src/DotNetCore.CAP.PostgreSql/IDataStorage.PostgreSql.cs

@@ -46,7 +46,7 @@ namespace DotNetCore.CAP.PostgreSql
         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\")" +
@@ -69,7 +69,7 @@ namespace DotNetCore.CAP.PostgreSql
                 new NpgsqlParameter("@Content", message.Content),
                 new NpgsqlParameter("@Retries", message.Retries),
                 new NpgsqlParameter("@Added", message.Added),
-                new NpgsqlParameter("@ExpiresAt", message.ExpiresAt.HasValue ? (object)message.ExpiresAt.Value : DBNull.Value),
+                new NpgsqlParameter("@ExpiresAt", message.ExpiresAt.HasValue ? message.ExpiresAt.Value : DBNull.Value),
                 new NpgsqlParameter("@StatusName", nameof(StatusName.Scheduled))
             };
 
@@ -84,7 +84,7 @@ namespace DotNetCore.CAP.PostgreSql
                 if (dbTrans == null && dbTransaction is IDbContextTransaction dbContextTrans)
                     dbTrans = dbContextTrans.GetDbTransaction();
 
-                var conn = dbTrans?.Connection;
+                var conn = dbTrans?.Connection!;
                 conn.ExecuteNonQuery(sql, dbTrans, sqlParams);
             }
 
@@ -127,7 +127,7 @@ namespace DotNetCore.CAP.PostgreSql
                 new NpgsqlParameter("@Content", _serializer.Serialize(mdMessage.Origin)),
                 new NpgsqlParameter("@Retries", mdMessage.Retries),
                 new NpgsqlParameter("@Added", mdMessage.Added),
-                new NpgsqlParameter("@ExpiresAt", mdMessage.ExpiresAt.HasValue ? (object) mdMessage.ExpiresAt.Value : DBNull.Value),
+                new NpgsqlParameter("@ExpiresAt", mdMessage.ExpiresAt.HasValue ? mdMessage.ExpiresAt.Value : DBNull.Value),
                 new NpgsqlParameter("@StatusName", nameof(StatusName.Scheduled))
             };
 
@@ -199,7 +199,7 @@ namespace DotNetCore.CAP.PostgreSql
                     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.PostgreSql/IDbConnection.Extensions.cs

@@ -9,7 +9,7 @@ namespace DotNetCore.CAP.PostgreSql
 {
     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.PostgreSql
             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.PostgreSql
 
             var reader = command.ExecuteReader();
 
-            T result = default;
+            T result = default!;
             if (readerFunc != null)
             {
                 result = readerFunc(reader);
@@ -77,14 +77,14 @@ namespace DotNetCore.CAP.PostgreSql
 
             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.PostgreSql/IDbContextTransaction.CAP.cs

@@ -18,7 +18,7 @@ namespace Microsoft.EntityFrameworkCore.Storage
         public CapEFDbTransaction(ICapTransaction transaction)
         {
             _transaction = transaction;
-            var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction;
+            var dbContextTransaction = (IDbContextTransaction)_transaction.DbTransaction!;
             TransactionId = dbContextTransaction.TransactionId;
         }
 
@@ -58,7 +58,7 @@ namespace Microsoft.EntityFrameworkCore.Storage
         {
             get
             {
-                var dbContextTransaction = (IDbContextTransaction) _transaction.DbTransaction;
+                var dbContextTransaction = (IDbContextTransaction) _transaction.DbTransaction!;
                 return dbContextTransaction.GetDbTransaction();
             }
         }

src/DotNetCore.CAP.PostgreSql/IMonitoringApi.PostgreSql.cs

@@ -27,9 +27,9 @@ namespace DotNetCore.CAP.PostgreSql
             _recName = initializer.GetReceivedTableName();
         }
 
-        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);
 
         public StatisticsDto GetStatistics()
         {
@@ -120,7 +120,7 @@ namespace DotNetCore.CAP.PostgreSql
                         Content = reader.GetString(index++),
                         Retries = reader.GetInt32(index++),
                         Added = reader.GetDateTime(index++),
-                        ExpiresAt = reader.IsDBNull(index++) ? (DateTime?)null : reader.GetDateTime(index - 1),
+                        ExpiresAt = reader.IsDBNull(index++) ? null : reader.GetDateTime(index - 1),
                         StatusName = reader.GetString(index)
                     });
                 }
@@ -242,14 +242,14 @@ select ""Key"",""Count"" from aggr where ""Key"" >= @minKey and ""Key"" <= @maxK
             return result;
         }
 
-        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} FOR UPDATE SKIP LOCKED";
 
             await using var connection = new NpgsqlConnection(_options.ConnectionString);
             var mediumMessage = connection.ExecuteReader(sql, reader =>
             {
-                MediumMessage message = null;
+                MediumMessage? message = null;
 
                 while (reader.Read())
                 {

src/DotNetCore.CAP/CAP.Builder.cs

@@ -6,7 +6,6 @@ using System.Linq;
 using System.Reflection;
 using DotNetCore.CAP.Filter;
 using DotNetCore.CAP.Internal;
-using JetBrains.Annotations;
 using Microsoft.Extensions.DependencyInjection;
 using Microsoft.Extensions.DependencyInjection.Extensions;
 // ReSharper disable UnusedMember.Global
@@ -78,7 +77,7 @@ namespace DotNetCore.CAP
         /// Registers subscribers from the specified types.
         /// </summary>
         /// <param name="handlerAssemblyMarkerTypes"></param>
-        public CapBuilder AddSubscriberAssembly([NotNull] params Type[] handlerAssemblyMarkerTypes)
+        public CapBuilder AddSubscriberAssembly(params Type[] handlerAssemblyMarkerTypes)
         {
             if (handlerAssemblyMarkerTypes == null) throw new ArgumentNullException(nameof(handlerAssemblyMarkerTypes));