ShowEasy/BackEnd/EuroTran/SqlSugar/ExpressionsToSql/Subquery/SubTools.cs

using System.Collections.Generic;
using System.Linq.Expressions;

namespace SqlSugar
{
    public class SubTools
    {
        public static List<ISubOperation> SubItems(ExpressionContext Context)
        {

            return new List<ISubOperation>
                                                {
                                                    new SubSelect { Context=Context },
                                                    new SubWhere{ Context=Context },
                                                    new SubAnd{ Context=Context },
                                                    new SubAny{ Context=Context },
                                                    new SubNotAny{ Context=Context },
                                                    new SubBegin{ Context=Context },
                                                    new SubFromTable{ Context=Context },
                                                    new SubCount{ Context=Context },
                                                    new SubMax{ Context=Context },
                                                    new SubMin{ Context=Context },
                                                    new SubSum{ Context=Context },
                                                    new SubAvg{ Context=Context },
                                                    new SubOrderBy{ Context=Context },
                                                    new SubOrderByDesc{ Context=Context },
                                                    new SubGroupBy{ Context=Context}
                                                };
        }

        public static List<ISubOperation> SubItemsConst = SubItems(null);

        public static string GetMethodValue(ExpressionContext context, Expression item, ResolveExpressType type)
        {
            var newContext = context.GetCopyContext();
            newContext.MappingColumns = context.MappingColumns;
            newContext.MappingTables = context.MappingTables;
            newContext.IgnoreComumnList = context.IgnoreComumnList;
            newContext.SqlFuncServices = context.SqlFuncServices;
            newContext.Resolve(item, type);
            context.Index = newContext.Index;
            context.ParameterIndex = newContext.ParameterIndex;
            if (newContext.Parameters.HasValue())
                context.Parameters.AddRange(newContext.Parameters);
            return newContext.Result.GetResultString();
        }
    }
}