public override IValue interpret(Context context)
{
IType sourceType = source.check(context);
if (!(sourceType is IterableType))
{
throw new InternalError("Illegal source type: " + sourceType.GetTypeName());
}
IType itemType = ((IterableType)sourceType).GetItemType();
IValue value = source.interpret(context);
if (value == null)
{
throw new NullReferenceError();
}
if (!(value is IFilterable))
{
throw new InternalError("Illegal fetch source: " + source);
}
IFilterable list = (IFilterable)value;
ArrowExpression arrow = predicate.ToArrowExpression();
Predicate <IValue> filter = arrow.GetFilter(context, itemType);
return(list.Filter(filter));
}
public IQueryable <TModel> Query <TEntity, TModel>(IFilterable <TEntity> searchModel)
where TEntity : class
{
var query = _repository.Query <TEntity>();
query = searchModel.Filter(query);
return(query.AsQuery <TEntity, TModel>());
}
public static IQueryable <T> Filter <T>(this IQueryable <T> input, IFilterable <T> filter)
{
return(filter.Filter(input));
}