- 增加 NavigateAttribute 配置导航关系；

- 修复 LinqToSql 方法，开启自动迁移时，迁移了无关类的 bug；
- 修复 Oracle DbFirst date(7) 类型未处理的 bug；#57
- 修复 AsSelect().Any() 未给其他条件时，产生 null bug；
- 增加 FreeSql.Extensions.LazyLoading 对 .net 4.5 的支持；
- 优化 MySql CodeFirst 增加 DateTime 迁移后，默认值为 0000-00-00 导致读取失败的 bug；
- 优化 LazyLoading 友好错误提示；

Providers/FreeSql.Provider.MySql/FreeSql.Provider.MySql.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net452</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 MySql 5.6</Description>

Providers/FreeSql.Provider.MySql/MySqlCodeFirst.cs

@@ -13,22 +13,9 @@ using System.Text.RegularExpressions;
 
 namespace FreeSql.MySql {
 
-	class MySqlCodeFirst : ICodeFirst {
-		IFreeSql _orm;
-		protected CommonUtils _commonUtils;
-		protected CommonExpression _commonExpression;
-		public MySqlCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
-			_orm = orm;
-			_commonUtils = commonUtils;
-			_commonExpression = commonExpression;
-		}
+	class MySqlCodeFirst : Internal.CommonProvider.CodeFirstProvider {
 
-		public bool IsAutoSyncStructure { get; set; } = false;
-		public bool IsSyncStructureToLower { get; set; } = false;
-		public bool IsSyncStructureToUpper { get; set; } = false;
-		public bool IsConfigEntityFromDbFirst { get; set; } = false;
-		public bool IsNoneCommandParameter { get; set; } = false;
-		public bool IsLazyLoading { get; set; } = false;
+		public MySqlCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
 
 		static object _dicCsToDbLock = new object();
 		static Dictionary<string, (MySqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (MySqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
@@ -64,7 +51,7 @@ namespace FreeSql.MySql {
 				{ typeof(MygisMultiPolygon).FullName,  (MySqlDbType.Geometry, "multipolygon", "multipolygon", false, null, new MygisMultiPolygon(new[]{new MygisPolygon(new[]{new[]{new MygisCoordinate2D(),new MygisCoordinate2D()},new[]{new MygisCoordinate2D(),new MygisCoordinate2D()}}),new MygisPolygon(new[]{new[]{new MygisCoordinate2D(),new MygisCoordinate2D()},new[]{new MygisCoordinate2D(),new MygisCoordinate2D()}})})) },
 			};
 
-		public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
+		public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
 			if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
 			if (type.IsArray) return null;
 			var enumType = type.IsEnum ? type : null;
@@ -85,8 +72,7 @@ namespace FreeSql.MySql {
 			return null;
 		}
 
-		public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
-		public string GetComparisonDDLStatements(params Type[] entityTypes) {
+		public override string GetComparisonDDLStatements(params Type[] entityTypes) {
 			var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5));
 			var database = conn.Value.Database;
 			Func<string, string, object> ExecuteScalar = (db, sql) => {
@@ -205,6 +191,7 @@ where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
 							}
 							//添加列
 							sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
+							if (tbcol.Attribute.IsNullable == false) sbalter.Append(" DEFAULT ").Append(_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue));
 							if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
 							sbalter.Append(";\r\n");
 						}
@@ -286,40 +273,5 @@ where a.constraint_schema IN ({0}) and a.table_name IN ({1})", tboldname ?? tbna
 				}
 			}
 		}
-
-		static object syncStructureLock = new object();
-		ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
-		public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
-		public bool SyncStructure(params Type[] entityTypes) {
-			if (entityTypes == null) return true;
-			var syncTypes = entityTypes.Where(a => dicSyced.ContainsKey(a.FullName) == false).ToArray();
-			if (syncTypes.Any() == false) return true;
-			var before = new Aop.SyncStructureBeforeEventArgs(entityTypes);
-			_orm.Aop.SyncStructureBefore?.Invoke(this, before);
-			Exception exception = null;
-			string ddl = null;
-			try {
-				lock (syncStructureLock) {
-					ddl = this.GetComparisonDDLStatements(syncTypes);
-					if (string.IsNullOrEmpty(ddl)) {
-						foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-						return true;
-					}
-					var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
-					foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-					return affrows > 0;
-				}
-			} catch (Exception ex) {
-				exception = ex;
-				throw ex;
-			} finally {
-				var after = new Aop.SyncStructureAfterEventArgs(before, ddl, exception);
-				_orm.Aop.SyncStructureAfter?.Invoke(this, after);
-			}
-		}
-		public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
-		public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
-		public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
-		public TableInfo GetTableByEntity(Type type) => _commonUtils.GetTableByEntity(type);
 	}
 }

Providers/FreeSql.Provider.MySqlConnector/FreeSql.Provider.MySqlConnector.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 MySql 5.6</Description>

Providers/FreeSql.Provider.Oracle/FreeSql.Provider.Oracle.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 Oracle 11</Description>

Providers/FreeSql.Provider.Oracle/OracleCodeFirst.cs

@@ -13,22 +13,9 @@ using System.Text.RegularExpressions;
 
 namespace FreeSql.Oracle {
 
-	class OracleCodeFirst : ICodeFirst {
-		IFreeSql _orm;
-		protected CommonUtils _commonUtils;
-		protected CommonExpression _commonExpression;
-		public OracleCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
-			_orm = orm;
-			_commonUtils = commonUtils;
-			_commonExpression = commonExpression;
-		}
+	class OracleCodeFirst : Internal.CommonProvider.CodeFirstProvider {
 
-		public bool IsAutoSyncStructure { get; set; } = false;
-		public bool IsSyncStructureToLower { get; set; } = false;
-		public bool IsSyncStructureToUpper { get; set; } = false;
-		public bool IsConfigEntityFromDbFirst { get; set; } = false;
-		public bool IsNoneCommandParameter { get; set; } = false;
-		public bool IsLazyLoading { get; set; } = false;
+		public OracleCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
 
 		static object _dicCsToDbLock = new object();
 		static Dictionary<string, (OracleDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (OracleDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
@@ -58,7 +45,7 @@ namespace FreeSql.Oracle {
 				{ typeof(Guid).FullName,  (OracleDbType.Char, "char", "char(36 CHAR) NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName,  (OracleDbType.Char, "char", "char(36 CHAR) NULL", false, true, null) },
 			};
 
-		public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
+		public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
 			if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
 			if (type.IsArray) return null;
 			var enumType = type.IsEnum ? type : null;
@@ -78,8 +65,7 @@ namespace FreeSql.Oracle {
 			return null;
 		}
 
-		public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
-		public string GetComparisonDDLStatements(params Type[] entityTypes) {
+		public override string GetComparisonDDLStatements(params Type[] entityTypes) {
 			var userId = (_orm.Ado.MasterPool as OracleConnectionPool).UserId;
 			var seqcols = new List<(ColumnInfo, string[], bool)>(); //序列
 
@@ -333,40 +319,5 @@ and a.owner in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
 				sqlType += $"({data_length})";
 			return sqlType;
 		}
-
-		static object syncStructureLock = new object();
-		ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
-		public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
-		public bool SyncStructure(params Type[] entityTypes) {
-			if (entityTypes == null) return true;
-			var syncTypes = entityTypes.Where(a => dicSyced.ContainsKey(a.FullName) == false).ToArray();
-			if (syncTypes.Any() == false) return true;
-			var before = new Aop.SyncStructureBeforeEventArgs(entityTypes);
-			_orm.Aop.SyncStructureBefore?.Invoke(this, before);
-			Exception exception = null;
-			string ddl = null;
-			try {
-				lock (syncStructureLock) {
-					ddl = this.GetComparisonDDLStatements(syncTypes);
-					if (string.IsNullOrEmpty(ddl)) {
-						foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-						return true;
-					}
-					var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
-					foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-					return affrows > 0;
-				}
-			} catch (Exception ex) {
-				exception = ex;
-				throw ex;
-			} finally {
-				var after = new Aop.SyncStructureAfterEventArgs(before, ddl, exception);
-				_orm.Aop.SyncStructureAfter?.Invoke(this, after);
-			}
-		}
-		public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
-		public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
-		public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
-		public TableInfo GetTableByEntity(Type type) => _commonUtils.GetTableByEntity(type);
 	}
 }

Providers/FreeSql.Provider.Oracle/OracleDbFirst.cs

@@ -58,6 +58,9 @@ namespace FreeSql.Oracle {
 				case "interval day to second":
 					_dicDbToCs.TryAdd(dbfull, _dicDbToCs["interval day(2) to second(6)"]);
 					return OracleDbType.IntervalDS;
+				case "date":
+					_dicDbToCs.TryAdd(dbfull, _dicDbToCs["date(7)"]);
+					return OracleDbType.IntervalDS;
 				case "timestamp":
 					_dicDbToCs.TryAdd(dbfull, _dicDbToCs["timestamp(6)"]);
 					return OracleDbType.TimeStamp;
@@ -106,6 +109,7 @@ namespace FreeSql.Oracle {
 				{ "number(10,2)", ("(decimal?)", "decimal.Parse({0})", "{0}.ToString()", "decimal?", typeof(decimal), typeof(decimal?), "{0}.Value", "GetDecimal") },
 
 				{ "interval day(2) to second(6)", ("(TimeSpan?)", "TimeSpan.Parse(double.Parse({0}))", "{0}.Ticks.ToString()", "TimeSpan?", typeof(TimeSpan), typeof(TimeSpan?), "{0}.Value", "GetValue") },
+				{ "date(7)", ("(DateTime?)", "new DateTime(long.Parse({0}))", "{0}.Ticks.ToString()", "DateTime?", typeof(DateTime), typeof(DateTime?), "{0}.Value", "GetValue") },
 				{ "timestamp(6)", ("(DateTime?)", "new DateTime(long.Parse({0}))", "{0}.Ticks.ToString()", "DateTime?", typeof(DateTime), typeof(DateTime?), "{0}.Value", "GetValue") },
 				{ "timestamp(6) with local time zone", ("(DateTime?)", "new DateTime(long.Parse({0}))", "{0}.Ticks.ToString()", "DateTime?", typeof(DateTime), typeof(DateTime?), "{0}.Value", "GetValue") },
 

Providers/FreeSql.Provider.PostgreSQL/FreeSql.Provider.PostgreSQL.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 PostgreSQL 9.5</Description>

Providers/FreeSql.Provider.PostgreSQL/PostgreSQLCodeFirst.cs

@@ -18,22 +18,9 @@ using System.Text.RegularExpressions;
 
 namespace FreeSql.PostgreSQL {
 
-	class PostgreSQLCodeFirst : ICodeFirst {
-		IFreeSql _orm;
-		protected CommonUtils _commonUtils;
-		protected CommonExpression _commonExpression;
-		public PostgreSQLCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
-			_orm = orm;
-			_commonUtils = commonUtils;
-			_commonExpression = commonExpression;
-		}
+	class PostgreSQLCodeFirst : Internal.CommonProvider.CodeFirstProvider {
 
-		public bool IsAutoSyncStructure { get; set; } = false;
-		public bool IsSyncStructureToLower { get; set; } = false;
-		public bool IsSyncStructureToUpper { get; set; } = false;
-		public bool IsConfigEntityFromDbFirst { get; set; } = false;
-		public bool IsNoneCommandParameter { get; set; } = false;
-		public bool IsLazyLoading { get; set; } = false;
+		public PostgreSQLCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
 
 		static object _dicCsToDbLock = new object();
 		static Dictionary<string, (NpgsqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (NpgsqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
@@ -94,7 +81,7 @@ namespace FreeSql.PostgreSQL {
 				{ typeof(PostgisGeometryCollection).FullName,  (NpgsqlDbType.Geometry, "geometry", "geometry", false, null, new PostgisGeometryCollection(new[]{new PostgisPoint(0, 0),new PostgisPoint(0, 0) })) },
 			};
 
-		public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
+		public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
 			var isarray = type.FullName != "System.Byte[]" && type.IsArray;
 			var elementType = isarray ? type.GetElementType() : type;
 			var info = GetDbInfoNoneArray(elementType);
@@ -122,9 +109,8 @@ namespace FreeSql.PostgreSQL {
 			}
 			return null;
 		}
-
-		public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
-		public string GetComparisonDDLStatements(params Type[] entityTypes) {
+		
+		public override string GetComparisonDDLStatements(params Type[] entityTypes) {
 			var sb = new StringBuilder();
 			var seqcols = new List<(ColumnInfo, string[], bool)>(); //序列
 
@@ -338,40 +324,5 @@ where pg_namespace.nspname={0} and pg_class.relname={1} and pg_constraint.contyp
 			}
 			return sb.Length == 0 ? null : sb.ToString();
 		}
-
-		static object syncStructureLock = new object();
-		ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
-		public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
-		public bool SyncStructure(params Type[] entityTypes) {
-			if (entityTypes == null) return true;
-			var syncTypes = entityTypes.Where(a => dicSyced.ContainsKey(a.FullName) == false).ToArray();
-			if (syncTypes.Any() == false) return true;
-			var before = new Aop.SyncStructureBeforeEventArgs(entityTypes);
-			_orm.Aop.SyncStructureBefore?.Invoke(this, before);
-			Exception exception = null;
-			string ddl = null;
-			try {
-				lock (syncStructureLock) {
-					ddl = this.GetComparisonDDLStatements(syncTypes);
-					if (string.IsNullOrEmpty(ddl)) {
-						foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-						return true;
-					}
-					var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
-					foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-					return affrows > 0;
-				}
-			} catch (Exception ex) {
-				exception = ex;
-				throw ex;
-			} finally {
-				var after = new Aop.SyncStructureAfterEventArgs(before, ddl, exception);
-				_orm.Aop.SyncStructureAfter?.Invoke(this, after);
-			}
-		}
-		public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
-		public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
-		public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
-		public TableInfo GetTableByEntity(Type type) => _commonUtils.GetTableByEntity(type);
 	}
 }

Providers/FreeSql.Provider.SqlServer/FreeSql.Provider.SqlServer.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net451</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 SqlServer 2005+，并根据版本适配分页方法：row_number 或 offset fetch next</Description>

Providers/FreeSql.Provider.SqlServer/SqlServerCodeFirst.cs

@@ -12,22 +12,9 @@ using System.Text.RegularExpressions;
 
 namespace FreeSql.SqlServer {
 
-	class SqlServerCodeFirst : ICodeFirst {
-		IFreeSql _orm;
-		protected CommonUtils _commonUtils;
-		protected CommonExpression _commonExpression;
-		public SqlServerCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
-			_orm = orm;
-			_commonUtils = commonUtils;
-			_commonExpression = commonExpression;
-		}
-
-		public bool IsAutoSyncStructure { get; set; } = false;
-		public bool IsSyncStructureToLower { get; set; } = false;
-		public bool IsSyncStructureToUpper { get; set; } = false;
-		public bool IsConfigEntityFromDbFirst { get; set; } = false;
-		public bool IsNoneCommandParameter { get; set; } = false;
-		public bool IsLazyLoading { get; set; } = false;
+	class SqlServerCodeFirst : Internal.CommonProvider.CodeFirstProvider {
+		
+		public SqlServerCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
 
 		static object _dicCsToDbLock = new object();
 		static Dictionary<string, (SqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (SqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
@@ -57,7 +44,7 @@ namespace FreeSql.SqlServer {
 				{ typeof(Guid).FullName,  (SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName,  (SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier", false, true, null) },
 			};
 
-		public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
+		public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
 			if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
 			if (type.IsArray) return null;
 			var enumType = type.IsEnum ? type : null;
@@ -76,9 +63,8 @@ namespace FreeSql.SqlServer {
 			}
 			return null;
 		}
-
-		public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
-		public string GetComparisonDDLStatements(params Type[] entityTypes) {
+		
+		public override string GetComparisonDDLStatements(params Type[] entityTypes) {
 			var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5));
 			var database = conn.Value.Database;
 			Func<string, string, object> ExecuteScalar = (db, sql) => {
@@ -326,41 +312,5 @@ use " + database, tboldname ?? tbname);
 			}
 			return ddv;
 		}
-
-
-		static object syncStructureLock = new object();
-		ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
-		public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
-		public bool SyncStructure(params Type[] entityTypes) {
-			if (entityTypes == null) return true;
-			var syncTypes = entityTypes.Where(a => dicSyced.ContainsKey(a.FullName) == false).ToArray();
-			if (syncTypes.Any() == false) return true;
-			var before = new Aop.SyncStructureBeforeEventArgs(entityTypes);
-			_orm.Aop.SyncStructureBefore?.Invoke(this, before);
-			Exception exception = null;
-			string ddl = null;
-			try {
-				lock (syncStructureLock) {
-					ddl = this.GetComparisonDDLStatements(syncTypes);
-					if (string.IsNullOrEmpty(ddl)) {
-						foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-						return true;
-					}
-					var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
-					foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-					return affrows > 0;
-				}
-			} catch (Exception ex) {
-				exception = ex;
-				throw ex;
-			} finally {
-				var after = new Aop.SyncStructureAfterEventArgs(before, ddl, exception);
-				_orm.Aop.SyncStructureAfter?.Invoke(this, after);
-			}
-		}
-		public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
-		public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
-		public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
-		public TableInfo GetTableByEntity(Type type) => _commonUtils.GetTableByEntity(type);
 	}
 }

Providers/FreeSql.Provider.Sqlite/FreeSql.Provider.Sqlite.csproj

@@ -2,7 +2,7 @@
 
 	<PropertyGroup>
 		<TargetFrameworks>netstandard2.0;net45</TargetFrameworks>
-		<Version>0.6.3</Version>
+		<Version>0.6.4</Version>
 		<GeneratePackageOnBuild>true</GeneratePackageOnBuild>
 		<Authors>YeXiangQin</Authors>
 		<Description>FreeSql 数据库实现，基于 Sqlite 3.0</Description>

Providers/FreeSql.Provider.Sqlite/SqliteCodeFirst.cs

@@ -12,22 +12,9 @@ using System.Text.RegularExpressions;
 
 namespace FreeSql.Sqlite {
 
-	class SqliteCodeFirst : ICodeFirst {
-		IFreeSql _orm;
-		protected CommonUtils _commonUtils;
-		protected CommonExpression _commonExpression;
-		public SqliteCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
-			_orm = orm;
-			_commonUtils = commonUtils;
-			_commonExpression = commonExpression;
-		}
+	class SqliteCodeFirst : Internal.CommonProvider.CodeFirstProvider {
 
-		public bool IsAutoSyncStructure { get; set; } = false;
-		public bool IsSyncStructureToLower { get; set; } = false;
-		public bool IsSyncStructureToUpper { get; set; } = false;
-		public bool IsConfigEntityFromDbFirst { get; set; } = false;
-		public bool IsNoneCommandParameter { get; set; } = false;
-		public bool IsLazyLoading { get; set; } = false;
+		public SqliteCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
 
 		static object _dicCsToDbLock = new object();
 		static Dictionary<string, (DbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (DbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
@@ -56,7 +43,7 @@ namespace FreeSql.Sqlite {
 				{ typeof(Guid).FullName,  (DbType.Guid, "character", "character(36) NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName,  (DbType.Guid, "character", "character(36)", false, true, null) },
 			};
 
-		public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
+		public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
 			if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
 			if (type.IsArray) return null;
 			var enumType = type.IsEnum ? type : null;
@@ -75,9 +62,8 @@ namespace FreeSql.Sqlite {
 			}
 			return null;
 		}
-
-		public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
-		public string GetComparisonDDLStatements(params Type[] entityTypes) {
+		
+		public override string GetComparisonDDLStatements(params Type[] entityTypes) {
 			var sb = new StringBuilder();
 			var sbDeclare = new StringBuilder();
 			foreach (var entityType in entityTypes) {
@@ -250,40 +236,5 @@ namespace FreeSql.Sqlite {
 			return sb.Length == 0 ? null : sb.ToString();
 		}
 		static Regex _regexUK = new Regex(@"CONSTRAINT\s*""([^""]+)""\s*UNIQUE\s*\(([^\)]+)\)", RegexOptions.IgnoreCase | RegexOptions.Compiled);
-
-		static object syncStructureLock = new object();
-		ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
-		public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
-		public bool SyncStructure(params Type[] entityTypes) {
-			if (entityTypes == null) return true;
-			var syncTypes = entityTypes.Where(a => a.IsAnonymousType() == false && dicSyced.ContainsKey(a.FullName) == false).ToArray();
-			if (syncTypes.Any() == false) return true;
-			var before = new Aop.SyncStructureBeforeEventArgs(entityTypes);
-			_orm.Aop.SyncStructureBefore?.Invoke(this, before);
-			Exception exception = null;
-			string ddl = null;
-			try {
-				lock (syncStructureLock) {
-					ddl = this.GetComparisonDDLStatements(syncTypes);
-					if (string.IsNullOrEmpty(ddl)) {
-						foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-						return true;
-					}
-					var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
-					foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
-					return affrows > 0;
-				}
-			} catch (Exception ex) {
-				exception = ex;
-				throw ex;
-			} finally {
-				var after = new Aop.SyncStructureAfterEventArgs(before, ddl, exception);
-				_orm.Aop.SyncStructureAfter?.Invoke(this, after);
-			}
-		}
-		public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
-		public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
-		public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
-		public TableInfo GetTableByEntity(Type type) => _commonUtils.GetTableByEntity(type);
 	}
 }