private static IExpressionEvaluator <long> LongArrayEvaluator(TermExpression term)
{
if (!String.Equals(term.PropertyName, "Value", StringComparison.OrdinalIgnoreCase))
{
throw new QueryParseException($"Name {term.PropertyName} unknown in term {term}. 'Value' is the only valid name.");
}
return(new LongEvaluator <long>(l => l, term));
}
public static IExpressionEvaluator <SampleItem> Evaluator(TermExpression term)
{
switch (term.PropertyName.ToLowerInvariant())
{
case "id":
return(new LongEvaluator <SampleItem>(i => i.ID, term));
case "state":
return(new EnumEvaluator <SampleItem, State>(i => i.State, term));
case "uri":
return(new StringEvaluator <SampleItem>(i => i.Uri, term, StringComparison.OrdinalIgnoreCase));
case "inprogress":
return(new BoolEvaluator <SampleItem>(i => i.InProgress, term));
default:
throw new QueryParseException($"Property Name {term.PropertyName} unrecognized. Known Names: ID, State, Uri");
}
}