public IList <T> Query(T queryCriteria, out LocateFailureInfo[] failures)
{
if (queryCriteria == null)
{
const string message = "The argument cannot be null.";
Platform.Log(LogLevel.Error, message);
throw new FaultException(message);
}
var results = new List <T>();
var failureList = new List <LocateFailureInfo>();
try
{
foreach (var priorsServer in ServerDirectory.GetPriorsServers(true))
{
try
{
IList <T> r = null;
priorsServer.GetService <IStudyRootQuery>(service => r = _query(queryCriteria, service));
results.AddRange(r);
}
catch (Exception e)
{
QueryFailedFault fault = new QueryFailedFault();
fault.Description = String.Format("Failed to query server {0}.", priorsServer.Name);
Platform.Log(LogLevel.Error, e, fault.Description);
if (_suppressQueryFailureFaults)
{
failureList.Add(new LocateFailureInfo(fault, fault.Description)
{
ServerName = priorsServer.Name, ServerAE = priorsServer.AETitle
});
}
else
{
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.");
Platform.Log(LogLevel.Error, e, fault.Description);
throw new FaultException <QueryFailedFault>(fault, fault.Description);
}
failures = failureList.ToArray();
return(results);
}
public LocateFailureInfo(QueryFailedFault fault, string faultDescription)
{
Fault = fault;
Description = faultDescription;
}
private static IList <TIdentifier> Query <TIdentifier, TFindScu>(TIdentifier queryCriteria, TFindScu scu)
where TIdentifier : Identifier, new()
where TFindScu : ServerQuery
{
if (queryCriteria == null)
{
const string message = "The query identifier cannot be null.";
Platform.Log(LogLevel.Error, message);
throw new FaultException(message);
}
IList <DicomAttributeCollection> scuResults;
DicomAttributeCollection criteria;
try
{
criteria = queryCriteria.ToDicomAttributeCollection();
}
catch (DicomException e)
{
DataValidationFault fault = new DataValidationFault
{
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
{
Description =
"Unexpected exception when converting contract object to DicomAttributeCollection."
};
Platform.Log(LogLevel.Error, e, fault.Description);
throw new FaultException <DataValidationFault>(fault, fault.Description);
}
try
{
scuResults = new List <DicomAttributeCollection>();
scu.Query(criteria, result => scuResults.Add(result));
}
catch (FaultException)
{
throw;
}
catch (Exception e)
{
QueryFailedFault fault = new QueryFailedFault
{
Description = String.Format("An unexpected error has occurred ({0})",
e.Message)
};
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 = scu.Partition.AeTitle;
}
results.Add(identifier);
}
return(results);
}