public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
if (!parentResult.IsDeferred())
{
return(ProcessingResult.Unsuccessful);
}
var predicate = query.Arguments[1];
var predicateResult = ExpressionProcessingHelper.ProcessPredicate(predicate, parentResult.GetDeferredItems(), context);
if (!predicateResult.IsSuccess)
{
return(ProcessingResult.Unsuccessful);
}
var parentResultCount = parentResult.GetDeferredItems().Count();
var predicateResultCount = predicateResult.GetDeferredItems().Count();
var result = (parentResultCount == predicateResultCount);
return(new ProcessingResult(true, result, true));
}
public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
if (!parentResult.IsDeferred())
{
return(ProcessingResult.Unsuccessful);
}
var predicateResult = ExpressionProcessingHelper.ProcessPredicate(query.Arguments[1], parentResult.GetDeferredItems(), context);
return(predicateResult.IsSuccess ? predicateResult : ProcessingResult.Unsuccessful);
}
public ProcessingResult ProcessQuery(MethodCallExpression query, ProcessingResult parentResult, DataContext context)
{
var hasPredicate = query.Arguments.Count == 2;
if (!hasPredicate)
{
return(ProcessQuery(parentResult.GetItems().GetEnumerator(), QueryProcessingHelper.GetReturnParameterType(query)));
}
if (!parentResult.IsDeferred())
{
return(ProcessingResult.Unsuccessful);
}
var predicate = query.Arguments[1];
var predicateResult = ExpressionProcessingHelper.ProcessPredicate(predicate, parentResult.GetDeferredItems(), context);
return(predicateResult.IsSuccess
? ProcessQuery(predicateResult.GetItems().GetEnumerator(), QueryProcessingHelper.GetReturnParameterType(query))
: ProcessingResult.Unsuccessful);
}