private IList <TIdentifier> Query <TIdentifier, TFindScu>(TIdentifier queryCriteria)
where TIdentifier : Identifier, new()
where TFindScu : FindScuBase, new()
{
Platform.CheckForEmptyString(_localAE, "localAE");
Platform.CheckForNullReference(_remoteAE, "remoteAE");
Platform.CheckForEmptyString(_remoteAE.AETitle, "AETitle");
Platform.CheckForNullReference(_remoteAE.ScpParameters, "ScpParameters");
Platform.CheckArgumentRange(_remoteAE.ScpParameters.Port, 1, 65535, "Port");
Platform.CheckForEmptyString(_remoteAE.ScpParameters.HostName, "HostName");
if (queryCriteria == null)
{
string message = "The query identifier cannot be null.";
Platform.Log(LogLevel.Error, message);
throw new FaultException(message);
}
IList <DicomAttributeCollection> scuResults;
using (TFindScu scu = new TFindScu())
{
DicomAttributeCollection criteria;
var oldCharacterSet = queryCriteria.SpecificCharacterSet;
const string utf8 = "ISO_IR 192";
//.NET strings are unicode, so the query criteria are unicode.
queryCriteria.SpecificCharacterSet = utf8;
try
{
criteria = queryCriteria.ToDicomAttributeCollection();
criteria[DicomTags.InstanceAvailability] = null;
criteria[DicomTags.RetrieveAeTitle] = null;
}
catch (DicomException e)
{
DataValidationFault fault = new DataValidationFault();
fault.Description = "Failed to convert contract object to DicomAttributeCollection.";
Platform.Log(LogLevel.Error, e, fault.Description);
throw new FaultException <DataValidationFault>(fault, fault.Description);
}
catch (Exception e)
{
DataValidationFault fault = new DataValidationFault();
fault.Description = "Unexpected exception when converting contract object to DicomAttributeCollection.";
Platform.Log(LogLevel.Error, e, fault.Description);
throw new FaultException <DataValidationFault>(fault, fault.Description);
}
finally
{
queryCriteria.SpecificCharacterSet = oldCharacterSet;
}
try
{
scuResults = scu.Find(_localAE, _remoteAE.AETitle, _remoteAE.ScpParameters.HostName, _remoteAE.ScpParameters.Port, criteria);
scu.Join();
if (scu.Status == ScuOperationStatus.Canceled)
{
String message = String.Format("The remote server cancelled the query ({0})",
scu.FailureDescription ?? "no failure description provided");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.ConnectFailed)
{
String message = String.Format("Connection failed ({0})",
scu.FailureDescription ?? "no failure description provided");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.AssociationRejected)
{
String message = String.Format("Association rejected ({0})",
scu.FailureDescription ?? "no failure description provided");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.Failed)
{
String message = String.Format("The query operation failed ({0})",
scu.FailureDescription ?? "no failure description provided");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.TimeoutExpired)
{
String message = String.Format("The connection timeout expired ({0})",
scu.FailureDescription ?? "no failure description provided");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.NetworkError)
{
String message = String.Format("An unexpected network error has occurred.");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
if (scu.Status == ScuOperationStatus.UnexpectedMessage)
{
String message = String.Format("An unexpected message was received; aborted association.");
QueryFailedFault fault = new QueryFailedFault();
fault.Description = message;
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
}
catch (FaultException)
{
throw;
}
catch (Exception e)
{
QueryFailedFault fault = new QueryFailedFault();
fault.Description = String.Format("An unexpected error has occurred ({0})",
scu.FailureDescription ?? "no failure description provided");
Platform.Log(LogLevel.Error, e, fault.Description);
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
}
List <TIdentifier> results = new List <TIdentifier>();
foreach (DicomAttributeCollection result in scuResults)
{
TIdentifier identifier = Identifier.FromDicomAttributeCollection <TIdentifier>(result);
if (String.IsNullOrEmpty(identifier.RetrieveAeTitle) || identifier.RetrieveAeTitle == _remoteAE.AETitle)
{
identifier.RetrieveAE = _remoteAE;
}
results.Add(identifier);
}
return(results);
}