Support snowflake id

Src/Asp.Net/SqlSugar/Abstract/InsertableProvider/InsertableProvider.cs

@@ -85,7 +85,62 @@ namespace SqlSugar
             return result;
         }
 
-
+        public virtual long ExecuteReturnSnowflakeId() 
+        {
+            var id = SnowFlakeSingle.instance.getID();
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var snowProperty=entity.Columns.FirstOrDefault(it => it.IsPrimarykey && it.PropertyInfo.PropertyType == UtilConstants.LongType);
+            Check.Exception(snowProperty==null, "The entity sets the primary key and is long");
+            foreach (var item in this.InsertObjs)
+            {
+                snowProperty.PropertyInfo.SetValue(item,id);
+            }
+            this.ExecuteCommand();
+            return id;
+        }
+        public List<long>  ExecuteReturnSnowflakeIdList() 
+        {
+            List<long> result = new List<long>();
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var snowProperty = entity.Columns.FirstOrDefault(it => it.IsPrimarykey && it.PropertyInfo.PropertyType == UtilConstants.LongType);
+            Check.Exception(snowProperty == null, "The entity sets the primary key and is long");
+            foreach (var item in InsertObjs)
+            {
+                var id = SnowFlakeSingle.instance.getID();;
+                snowProperty.PropertyInfo.SetValue(item, id);
+                result.Add(id);
+            }
+            this.ExecuteCommand();
+            return result;
+        }
+        public async Task<long> ExecuteReturnSnowflakeIdAsync() 
+        {
+            var id = SnowFlakeSingle.instance.getID();
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var snowProperty = entity.Columns.FirstOrDefault(it => it.IsPrimarykey && it.PropertyInfo.PropertyType == UtilConstants.LongType);
+            Check.Exception(snowProperty == null, "The entity sets the primary key and is long");
+            foreach (var item in this.InsertObjs)
+            {
+                snowProperty.PropertyInfo.SetValue(item, id);
+            }
+            await this.ExecuteCommandAsync();
+            return id;
+        }
+        public async Task<List<long>> ExecuteReturnSnowflakeIdListAsync() 
+        {
+            List<long> result = new List<long>();
+            var entity = this.Context.EntityMaintenance.GetEntityInfo<T>();
+            var snowProperty = entity.Columns.FirstOrDefault(it => it.IsPrimarykey && it.PropertyInfo.PropertyType == UtilConstants.LongType);
+            Check.Exception(snowProperty == null, "The entity sets the primary key and is long");
+            foreach (var item in InsertObjs)
+            {
+                var id = SnowFlakeSingle.instance.getID(); ;
+                snowProperty.PropertyInfo.SetValue(item, id);
+                result.Add(id);
+            }
+            await this.ExecuteCommandAsync();
+            return result;
+        }
 
         public virtual T ExecuteReturnEntity()
         {

Src/Asp.Net/SqlSugar/DistributedSystem/Snowflake/SnowFlakeSingle.cs

@@ -4,21 +4,21 @@ using System.Linq;
 using System.Text;
 using System.Threading.Tasks;
 
-namespace SqlSugar.DistributedSystem.Snowflake
+namespace SqlSugar
 {
 	public sealed class SnowFlakeSingle 
 	{
 		public static readonly SnowFlakeSingle instance = new SnowFlakeSingle();
 		private SnowFlakeSingle()
 		{
-			worker = new Snowflake.IdWorker(1, 1);
+			worker = new DistributedSystem.Snowflake.IdWorker(1, 1);
 		}
 		static SnowFlakeSingle() { }
 		public static SnowFlakeSingle Instance
 		{
 			get { return instance; }
 		}
-		private Snowflake.IdWorker worker;
+		private DistributedSystem.Snowflake.IdWorker worker;
 		public long getID()
 		{
 			return worker.NextId();

Src/Asp.Net/SqlSugar/Interface/Insertable.cs

@@ -12,6 +12,10 @@ namespace SqlSugar
         InsertBuilder InsertBuilder { get; set; }
         int ExecuteCommand();
         Task<int> ExecuteCommandAsync();
+        long ExecuteReturnSnowflakeId();
+        List<long> ExecuteReturnSnowflakeIdList();
+        Task<long> ExecuteReturnSnowflakeIdAsync();
+        Task<List<long>> ExecuteReturnSnowflakeIdListAsync();
         int ExecuteReturnIdentity();
         Task<int> ExecuteReturnIdentityAsync();
         T ExecuteReturnEntity();