- 支持 Sqlite :memory: 模式； #191

FreeSql.Tests/FreeSql.Tests/SqlServer/Curd/SqlServerInsertTest.cs

@@ -25,7 +25,7 @@ namespace FreeSql.Tests.SqlServer
         {
             [Column(IsIdentity = true, IsPrimary = true)]
             public int Id { get; set; }
-            public int? Clicks { get; set; }
+            public int Clicks { get; set; }
             public int TypeGuid { get; set; }
             public TestTypeInfo Type { get; set; }
             public string Title { get; set; }
@@ -164,6 +164,15 @@ namespace FreeSql.Tests.SqlServer
             Assert.Equal(items.First().Title, itemsInserted.First().Title);
             Assert.Equal(items.Last().Title, itemsInserted.Last().Title);
         }
+        [Fact]
+        public void ExecuteSqlBulkCopy()
+        {
+            var items = new List<Topic>();
+            for (var a = 0; a < 10; a++) items.Add(new Topic { Id = a + 1, Title = $"newtitle{a}", Clicks = a * 100, CreateTime = DateTime.Now });
+
+            insert.AppendData(items).InsertIdentity().ExecuteSqlBulkCopy();
+            // System.NotSupportedException:“DataSet does not support System.Nullable<>.”
+        }
 
         [Fact]
         public void AsTable()

FreeSql.Tests/FreeSql.Tests/g.cs

@@ -71,7 +71,7 @@ public class g
     public static IFreeSql oracle => oracleLazy.Value;
 
     static Lazy<IFreeSql> sqliteLazy = new Lazy<IFreeSql>(() => new FreeSql.FreeSqlBuilder()
-        .UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Attachs=xxxtb.db;Pooling=true;Max Pool Size=2")
+        .UseConnectionString(FreeSql.DataType.Sqlite, @"Data Source=|DataDirectory|\document.db;Attachs=xxxtb.db;")
         //.UseConnectionFactory(FreeSql.DataType.Sqlite, () =>
         //{
         //    var conn = new System.Data.SQLite.SQLiteConnection(@"Data Source=|DataDirectory|\document.db;Pooling=true;");

FreeSql/Internal/CommonProvider/AdoProvider/DbConnectionPool.cs

@@ -13,9 +13,35 @@ namespace FreeSql.Internal.CommonProvider
     {
         internal DataType _dataType;
         internal Func<DbConnection> _connectionFactory;
+        public DbConnection TestConnection { get; }
+        public bool IsSingletonConnection { get; }
         int _id;
         public DbConnectionPool(DataType dataType, Func<DbConnection> connectionFactory)
         {
+            #region Test connectionFactory
+            //情况1：() => new SqlConnection(...)
+            //情况2：() => conn
+            DbConnection conn1 = null;
+            DbConnection conn2 = null;
+            try
+            {
+                conn1 = connectionFactory(); //测试 conn
+                conn2 = connectionFactory();
+
+                TestConnection = conn1; //赋值创建 Command，兼容 Mono.Data.Sqlite
+                IsSingletonConnection = conn1 == conn2;
+            }
+            catch { }
+            finally
+            {
+                if (conn1 != conn2)
+                {
+                    if (conn1?.State == ConnectionState.Open) try { conn1?.Close(); } catch { }
+                    if (conn2?.State == ConnectionState.Open) try { conn2?.Close(); } catch { }
+                }
+            }
+            #endregion
+
             _dataType = dataType;
             _connectionFactory = connectionFactory;
             Policy = new DbConnectionPoolPolicy(this);
@@ -55,6 +81,7 @@ namespace FreeSql.Internal.CommonProvider
         public void Return(Object<DbConnection> obj, bool isReset = false)
         {
             if (obj == null || obj.Value == null) return;
+            if (IsSingletonConnection) return;
             if (obj.Value.State != ConnectionState.Closed)
                 obj.Value.Close();
             if (_dataType == DataType.Sqlite)

Providers/FreeSql.Provider.Sqlite/SqliteAdo/SqliteAdo.cs

@@ -3,6 +3,7 @@ using FreeSql.Internal.Model;
 using SafeObjectPool;
 using System;
 using System.Collections;
+using System.Data;
 using System.Data.Common;
 using System.Data.SQLite;
 using System.Text;
@@ -18,9 +19,9 @@ namespace FreeSql.Sqlite
             base._util = util;
             if (connectionFactory != null)
             {
-                MasterPool = new FreeSql.Internal.CommonProvider.DbConnectionPool(DataType.Sqlite, connectionFactory);
+                var pool = new FreeSql.Internal.CommonProvider.DbConnectionPool(DataType.Sqlite, connectionFactory);
-                _CreateCommandConnection = MasterPool.Get().Value;
+                MasterPool = pool;
-                _CreateCommandConnection.Close();
+                _CreateCommandConnection = pool.TestConnection;
                 return;
             }
             if (!string.IsNullOrEmpty(masterConnectionString))

Providers/FreeSql.Provider.Sqlite/SqliteAdo/SqliteConnectionPool.cs

@@ -106,6 +106,12 @@ namespace FreeSql.Sqlite
                     _connectionString = string.Concat(att[0], idx == -1 ? "" : att[1].Substring(idx));
                 }
 
+                if (_connectionString.ToLower().Contains(":memory:"))
+                {
+                    //内存模式
+                    PoolSize = 1;
+                }
+
 #if ns20
                 minPoolSize = 1;
 #endif