public static Func <Expression, Expression, Expression> GetCompareExpression(this EnumFilterCompare compare)
{
Func <Expression, Expression, Expression> expr = Expression.Equal;
switch (compare)
{
case EnumFilterCompare.LT:
expr = Expression.LessThan;
break;
case EnumFilterCompare.LTE:
expr = Expression.LessThanOrEqual;
break;
case EnumFilterCompare.GT:
expr = Expression.GreaterThan;
break;
case EnumFilterCompare.GTE:
expr = Expression.GreaterThanOrEqual;
break;
case EnumFilterCompare.Begins:
expr = (Expression exp1, Expression exp2) =>
{
// увы с case ignore орм не может составить запрос и выполняет фильтрацию после запроса
// но мы можем вызвать ToLower(), но это тоже не вариант ибо индексы идут лесом, а хотя индексы и так идут лесом
var meth = typeof(string).GetMethod("StartsWith", new Type[] { typeof(string) /*, typeof(StringComparison)*/ });
var func = Expression.Call(exp1, meth, exp2 /*, Expression.Constant(StringComparison.OrdinalIgnoreCase, typeof(StringComparison))*/);
return(func);
};
break;
case EnumFilterCompare.Ends:
// todo
break;
case EnumFilterCompare.Include:
// todo
break;
}
return(expr);
}
private void _init(Controller2Garin controller, string title, string placeholder, EnumHtmlType htmlType, bool isRequired, bool needTranslate, bool isMultiple,
string propertyName, int priority, List <string> Default, EnumFilterCompare compare = EnumFilterCompare.Equals, string format = null)
{
Controller = controller;
Logger = controller.LoggerFactory.CreateLogger(GetType().FullName);
HtmlType = htmlType;
PropertyName = propertyName;
Priority = priority;
IsRequired = isRequired;
NeedTranslate = needTranslate;
IsMultiple = isMultiple;
Title = title;
Placeholder = placeholder;
Compare = compare;
Format = format;
//this.Default = Default;
this.Default = ParseValuesFromStrings(Default);
}
public Field(Controller2Garin controller, string title, string placeholder, EnumHtmlType htmlType, bool isRequired, bool needTranslate, bool isMultiple,
string propertyName, int priority, List <string> Default, EnumFilterCompare compare = EnumFilterCompare.Equals, string format = null)
{
_init(controller, title, placeholder, htmlType, isRequired, needTranslate, isMultiple,
propertyName, priority, Default, compare, format);
}
