public static TBuilder SortAsVariant <TBuilder, TRequest, TEntity, TSwitch>(
this RequestEntityConfigBuilderCommon <TRequest, TEntity, TBuilder> config,
Func <TRequest, TSwitch> getSwitchValue,
Action <SwitchSortBuilder <TRequest, TEntity, TSwitch> > configure)
where TEntity : class
where TSwitch : class
where TBuilder : RequestEntityConfigBuilderCommon <TRequest, TEntity, TBuilder>
{
var builder = new SwitchSortBuilder <TRequest, TEntity, TSwitch>(getSwitchValue);
configure(builder);
return(config.SetSorter(builder.Build()));
}
/// <summary>
/// Configures how a query's results should be ordered.
/// See the docs for more information on "Variant Sorting".
/// </summary>
public TBuilder SortAsVariant <TSwitch>(
string switchProperty,
Action <SwitchSortBuilder <TRequest, TEntity, TSwitch> > configure)
where TSwitch : class
{
var requestParam = Expression.Parameter(typeof(TRequest), "r");
var requestProp = Expression.PropertyOrField(requestParam, switchProperty);
var readPropExpr = Expression.Lambda <Func <TRequest, TSwitch> >(requestProp, requestParam);
var builder = new SwitchSortBuilder <TRequest, TEntity, TSwitch>(readPropExpr.Compile());
configure(builder);
var sorterFactory = builder.Build();
return(SetSorter(sorterFactory));
}