/// <summary>
/// selector: Name,Age,Location
/// orderBy:
/// - ascending : +Name,+Age
/// - descending : -Name,-Age
/// - mixed (OrderBy, ThenBy) : +Name,-Age
/// query: &(Name=Roy)(Age=18)
/// </summary>
/// <param name="source"></param>
/// <param name="selector"></param>
/// <param name="filter"></param>
/// <param name="orderBy"></param>
/// <returns></returns>
public static IQueryable QueryDynamic(this IQueryable source, string selector, string filter,
string orderBy = null, int?skip = null, int?take = null)
{
var outputType = source.ElementType;
if (selector != null)
{
var selectorExpression = SelectorBuilder.Build(source.ElementType, selector, out outputType);
if (selectorExpression != null)
{
source = source.Provider.CreateQuery(Expression.Call(typeof(Queryable), "Select",
new[] { source.ElementType, outputType },
source.Expression, selectorExpression));
}
}
if (filter != null)
{
var queryExpression = FilterParser.Parse(filter).Build(outputType);
if (queryExpression != null)
{
source = source.Provider.CreateQuery(Expression.Call(typeof(Queryable), "Where",
new[] { outputType },
source.Expression, queryExpression));
}
}
if (orderBy != null)
{
var isFirstOrder = true;
foreach (var orderByField in orderBy.Split(",").Where(of => of.Length > 1))
{
var memberName = orderByField[1..];
public GateController NewDut()
{
_selector = SelectorBuilder.Build();
_pwmController = MockPwmController;
_gateStates = GateStatesBuilder.Build();
return(new GateController(_selector, _pwmController, _gateStates.Object));
}