public static ISet<string> GetUniqueCandidateProperties(
IList<ViewFactoryForge> forges,
Attribute[] annotations)
{
var disableUniqueImplicit = HintEnum.DISABLE_UNIQUE_IMPLICIT_IDX.GetHint(annotations) != null;
if (forges == null || forges.IsEmpty()) {
return null;
}
if (forges[0] is GroupByViewFactoryForge) {
var grouped = (GroupByViewFactoryForge) forges[0];
var criteria = grouped.CriteriaExpressions;
var groupedCriteria = ExprNodeUtilityQuery.GetPropertyNamesIfAllProps(criteria);
if (groupedCriteria == null) {
return null;
}
var inner = grouped.Groupeds[0];
if (inner is DataWindowViewForgeUniqueCandidate && !disableUniqueImplicit) {
var uniqueFactory = (DataWindowViewForgeUniqueCandidate) inner;
var uniqueCandidates = uniqueFactory.UniquenessCandidatePropertyNames;
if (uniqueCandidates != null) {
uniqueCandidates.AddAll(groupedCriteria);
}
return uniqueCandidates;
}
return null;
}
if (forges[0] is DataWindowViewForgeUniqueCandidate && !disableUniqueImplicit) {
var uniqueFactory = (DataWindowViewForgeUniqueCandidate) forges[0];
return uniqueFactory.UniquenessCandidatePropertyNames;
}
if (forges[0] is VirtualDWViewFactoryForge) {
var vdw = (VirtualDWViewFactoryForge) forges[0];
return vdw.UniqueKeys;
}
return null;
}