private static bool TryGetDatasetMatchCriteria(
[NotNull] IEnumerable <NamedValuesExpression> expressions,
[NotNull] NotificationCollection notifications,
[NotNull] out IEnumerable <IDatasetMatchCriterion> criteria)
{
var list = new List <IDatasetMatchCriterion>();
var anyFailure = false;
foreach (NamedValuesExpression expression in expressions)
{
IDatasetMatchCriterion criterion = TryCreate(expression, notifications);
if (criterion == null)
{
anyFailure = true;
}
else
{
list.Add(criterion);
}
}
criteria = list;
return(!anyFailure);
}
private static IDatasetMatchCriterion TryCreate(
[NotNull] NamedValuesConjunctionExpression conjunction,
[NotNull] NotificationCollection notifications)
{
var result = new DatasetMatchCriterionConjunction();
var anyFailure = false;
foreach (NamedValues namedValues in conjunction.NamedValuesCollection)
{
IDatasetMatchCriterion criterion = TryCreate(namedValues, notifications);
if (criterion != null)
{
result.Add(criterion);
}
else
{
anyFailure = true;
}
}
return(anyFailure
? null
: result);
}
public void Add([NotNull] IDatasetMatchCriterion criterion)
{
_criteria.Add(criterion);
}
