修复TDengine插入Datetime默认值查询异常

FreeSql.Tests/FreeSql.Tests.Provider.TDengine/TDengine/TDengineAdo/TDengineAdoTest.cs → FreeSql.Tests/FreeSql.Tests.Provider.TDengine/TDengine/TDengineCrud/TDengineCrudTest.cs

@@ -4,7 +4,7 @@
 
 namespace FreeSql.Tests.Provider.TDengine.TDengine.TDengineAdo
 {
-    public class TDengineAdoTest
+    public class TDengineCrudTest
     {
         IFreeSql fsql => g.tdengine;
 

FreeSql.Tests/FreeSql.Tests.Provider.TDengine/TDengine/TDengineIssue/TDengineIssueTest.cs

@@ -0,0 +1,72 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+using FreeSql.DataAnnotations;
+using Newtonsoft.Json;
+using Xunit.Abstractions;
+
+namespace FreeSql.Tests.Provider.TDengine.TDengine.TDengineIssue
+{
+    public class TDengineIssueTest
+    {
+        private IFreeSql _fsql;
+        private ITestOutputHelper _output;
+
+        public TDengineIssueTest(ITestOutputHelper output)
+        {
+            _fsql = g.tdengine;
+            _output = output;
+        }
+
+        [Fact]
+        void CodeFirst1977()
+        {
+            _fsql.CodeFirst.SyncStructure(typeof(TDengineProcessMetrics1977));
+        }
+
+
+        [Fact]
+        void SelectTest1977()
+        {
+            var data = _fsql.Select<TDengineProcessMetrics1977>()
+                .ToList();
+            _output.WriteLine(JsonConvert.SerializeObject(data));
+        }
+
+        [Fact]
+        void InsertTest1977()
+        {
+            var insertAffrows = _fsql.Insert(new TDengineProcessMetrics1977()
+                {
+                    Timestamp = DateTime.Now,
+                    HostName = "host6"
+                }
+            ).ExecuteAffrows();
+            Assert.Equal(1, insertAffrows);
+        }
+
+    }
+
+    public class TDengineProcessMetrics1977
+    {
+        /// <summary>
+        /// 数据时间戳
+        /// </summary>
+        [Column(Name = "ts")]
+        public DateTime Timestamp { get; set; }
+
+        /// <summary>
+        /// 主机名
+        /// </summary>
+        [Column(Name = "host_name")]
+        public string HostName { get; set; }
+
+        /// <summary>
+        /// 进程启动时间
+        /// </summary>
+        [Column(Name = "start_time")]
+        public DateTime StartTime { get; set; }
+    }
+}

Providers/FreeSql.Provider.TDengine/TDengineProvider.cs

@@ -43,6 +43,31 @@ public TDengineProvider(string masterConnectionString, string[] slaveConnectionS
             //        e.ModifyResult.IsIgnore = true;
             //};
 
+            //TDengine 特殊处理:
+            this.Aop.AuditDataReader += (_, e) =>
+            {
+                var dataTypeName = e.DataReader.GetDataTypeName(e.Index);
+                switch (dataTypeName)
+                {
+                    case "TIMESTAMP":
+                        try
+                        {
+                            var value = e.DataReader.GetValue(e.Index);
+                            if (value != null)
+                                e.Value = e.DataReader.GetDateTime(e.Index);
+                            else
+                                e.Value = null;
+
+                            return;
+                        }
+                        catch
+                        {
+                            e.Value = new DateTime();
+                            return;
+                        }
+                }
+            };
+
             //处理参数化
             this.Aop.CommandBefore += (_, e) =>
             {
@@ -75,7 +100,8 @@ public override IInsert<T1> CreateInsertProvider<T1>() =>
 
         public override IUpdate<T1> CreateUpdateProvider<T1>(object dywhere)
         {
-            throw new NotImplementedException($"FreeSql.Provider.TDengine {CoreErrorStrings.S_Not_Implemented_Feature}");
+            throw new NotImplementedException(
+                $"FreeSql.Provider.TDengine {CoreErrorStrings.S_Not_Implemented_Feature}");
         }
 
         public override IDelete<T1> CreateDeleteProvider<T1>(object dywhere)
@@ -85,7 +111,8 @@ public override IDelete<T1> CreateDeleteProvider<T1>(object dywhere)
 
         public override IInsertOrUpdate<T1> CreateInsertOrUpdateProvider<T1>()
         {
-            throw new NotImplementedException($"FreeSql.Provider.TDengine {CoreErrorStrings.S_Not_Implemented_Feature}");
+            throw new NotImplementedException(
+                $"FreeSql.Provider.TDengine {CoreErrorStrings.S_Not_Implemented_Feature}");
         }
 
         ~TDengineProvider() => this.Dispose();