/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql打包对象</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(NewArrayExpression expression, SqlWrapper sqlWrapper) { for (var i = 0; i < expression.Expressions.Count; i++) { SqlExpressionProvider.GroupBy(expression.Expressions[i], sqlWrapper); } sqlWrapper.Remove(sqlWrapper.Length - 1, 1); return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql包装器</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(NewExpression expression, SqlWrapper sqlWrapper) { foreach (Expression item in expression.Arguments) { SqlExpressionProvider.GroupBy(item, sqlWrapper); sqlWrapper += ","; } sqlWrapper.RemoveLast(','); return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql包装器</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(NewArrayExpression expression, SqlWrapper sqlWrapper) { for (var i = 0; i < expression.Expressions.Count; i++) { SqlExpressionProvider.GroupBy(expression.Expressions[i], sqlWrapper); sqlWrapper += ","; } sqlWrapper.RemoveLast(','); return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql打包对象</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(ListInitExpression expression, SqlWrapper sqlWrapper) { var array = (expression.ToObject() as IEnumerable <object>)?.ToList(); if (array != null) { for (var i = 0; i < array.Count; i++) { SqlExpressionProvider.GroupBy(Expression.Constant(array[i], array[i].GetType()), sqlWrapper); } sqlWrapper.Remove(sqlWrapper.Length - 1, 1); } return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql包装器</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(ListInitExpression expression, SqlWrapper sqlWrapper) { if (expression.ToObject() is IEnumerable collection) { foreach (var item in collection) { SqlExpressionProvider.GroupBy(Expression.Constant(item), sqlWrapper); sqlWrapper += ","; } sqlWrapper.RemoveLast(','); } return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql打包对象</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(UnaryExpression expression, SqlWrapper sqlWrapper) { SqlExpressionProvider.GroupBy(expression.Operand, sqlWrapper); return(sqlWrapper); }
/// <summary> /// GroupBy /// </summary> /// <param name="expression">表达式树</param> /// <param name="sqlWrapper">sql打包对象</param> /// <returns>SqlWrapper</returns> public override SqlWrapper GroupBy(MemberExpression expression, SqlWrapper sqlWrapper) { var tableAlias = string.Empty; var tableName = string.Empty; if (expression.Expression.NodeType == ExpressionType.Parameter) { var type = expression.Expression.Type != expression.Member.DeclaringType ? expression.Expression.Type : expression.Member.DeclaringType; tableName = sqlWrapper.GetTableName(type); tableAlias = (expression.Expression as ParameterExpression)?.Name; } if (expression.Expression.NodeType == ExpressionType.Constant) { tableName = sqlWrapper.GetTableName(sqlWrapper.DefaultType); } tableAlias = sqlWrapper.GetTableAlias(tableName, tableAlias); if (!tableAlias.IsNullOrEmpty()) { tableAlias += "."; } if (expression.Expression.NodeType == ExpressionType.Parameter) { sqlWrapper += tableAlias + sqlWrapper.GetColumnInfo(expression.Member.DeclaringType, expression.Member).columnName; } if (expression.Expression.NodeType == ExpressionType.Constant) { var obj = expression.ToObject(); if (obj != null) { var type = obj.GetType().Name; if (type == "String[]" && obj is string[] array) { foreach (var item in array) { SqlExpressionProvider.GroupBy(Expression.Constant(item, item.GetType()), sqlWrapper); } sqlWrapper.Remove(sqlWrapper.Length - 1, 1); } if (type == "List`1" && obj is List <string> list) { foreach (var item in list) { SqlExpressionProvider.GroupBy(Expression.Constant(item, item.GetType()), sqlWrapper); } sqlWrapper.Remove(sqlWrapper.Length - 1, 1); } if (type == "String" && obj is string str) { SqlExpressionProvider.GroupBy(Expression.Constant(str, str.GetType()), sqlWrapper); sqlWrapper.Remove(sqlWrapper.Length - 1, 1); } } } return(sqlWrapper); }