old_flsystem/类库/SqlSugar/5.0.0.9/ExpressionsToSql/Subquery/Items/SubSelect.cs

56 lines
1.2 KiB
C#

using System;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using System.Text;
namespace SqlSugar
{
public class SubSelect : ISubOperation
{
public bool HasWhere
{
get; set;
}
public string Name
{
get
{
return "Select";
}
}
public Expression Expression
{
get; set;
}
public int Sort
{
get
{
return 200;
}
}
public ExpressionContext Context
{
get;set;
}
public string GetValue(Expression expression = null)
{
var exp = expression as MethodCallExpression;
var entityType = (exp.Arguments[0] as LambdaExpression).Parameters[0].Type;
if (this.Context.InitMappingInfo != null)
{
this.Context.InitMappingInfo(entityType);
this.Context.RefreshMapping();
}
return SubTools.GetMethodValue(this.Context, exp.Arguments[0],ResolveExpressType.FieldSingle);
}
}
}