private static bool StudyExistsOnRemote(IDicomServiceNode server, string studyInstanceUid)
{
IList <StudyRootStudyIdentifier> result = null;
server.GetService <IStudyRootQuery>(s => result =
s.StudyQuery(new StudyRootStudyIdentifier {
StudyInstanceUid = studyInstanceUid
}));
return(result.Count > 0);
}
private static List <StudyEntry> GetStudyEntries(IDicomServiceNode server, StudyRootStudyIdentifier criteria)
{
// N.B.: we have to handle multiple modalities in the search criteria this way because DICOM does not allow multi-valued search on modality (if you think it does, re-read the standard carefully!)
// normalize the list of modalities (no duplicates, and empty string only if no other modalities)
var modalities = (criteria.ModalitiesInStudy ?? new string[0]).Except(new[] { string.Empty }).Distinct().ToList();
if (modalities.Count == 0)
{
modalities.Add(string.Empty);
}
var storeQuery = server.IsSupported <IStudyStoreQuery>() ? server.GetService <IStudyStoreQuery>() : new StudyRootQueryStoreAdapter(server.GetService <IStudyRootQuery>());
using (var bridge = new StudyStoreBridge(storeQuery))
{
IEnumerable <StudyEntry> results = new StudyEntry[0];
foreach (var modality in modalities)
{
var modalityCriteria = new StudyRootStudyIdentifier(criteria)
{
ModalitiesInStudy = new[] { modality }
};
var modalityResults = bridge.GetStudyEntries(modalityCriteria).ToList(); // 'ToList' to execute query here and now
if ((modality == string.Empty) ||
(modalityResults.Any() && modalityResults.All(s => s.Study.ModalitiesInStudy.All(string.IsNullOrEmpty))) || // 'All' returns true if sequence is empty, so make sure it's not empty!
(modalityResults.Any(s => !s.Study.ModalitiesInStudy.Any(m => modality.Equals(m, StringComparison.InvariantCultureIgnoreCase)))))
{
// if modality was not filtered in the query
// or if all results (non-empty) do not return modality (i.e. the server does not support querying or returning this optional tag)
// or if any result does not match the queried modality (i.e. the server does not support querying on this optional tag)
// then these are all the unique results we'll ever get, and we can skip the other modalities
return(modalityResults);
}
results = results.Union(modalityResults, s => s.Study.StudyInstanceUid);
}
return(results.ToList());
}
}
private static bool StudyExistsOnRemote(IDicomServiceNode server, string studyInstanceUid)
{
IList<StudyRootStudyIdentifier> result = null;
server.GetService<IStudyRootQuery>(s => result =
s.StudyQuery(new StudyRootStudyIdentifier {StudyInstanceUid = studyInstanceUid}));
return result.Count > 0;
}
