public override T Get <T>(int item = -1)
{
if (_values == null)
{
_values = base.Get <string[]>().Select(x => DicomUID.Parse(x)).ToArray();
}
if (typeof(T) == typeof(DicomTransferSyntax))
{
return((T)(object)DicomTransferSyntax.Lookup(_values[item]));
}
if (typeof(T) == typeof(DicomTransferSyntax[]))
{
return((T)(object)_values.Select(x => DicomTransferSyntax.Lookup(x)).ToArray());
}
if (typeof(T) == typeof(DicomUID) || typeof(T) == typeof(object))
{
return((T)(object)_values[item]);
}
if (typeof(T) == typeof(DicomUID[]) || typeof(T) == typeof(object[]))
{
return((T)(object)_values);
}
return(base.Get <T>(item));
}
private void LookupReturnsKnownTransferSyntax()
{
var ts = DicomTransferSyntax.Lookup(DicomUID.ImplicitVRLittleEndian);
Assert.NotNull(ts);
Assert.Equal(DicomUID.ImplicitVRLittleEndian, ts.UID);
}
private void LookupThrowsOnInvalidUidType()
{
var uid = DicomUID.ComputedRadiographyImageStorage;
Assert.Throws <DicomDataException>(
() => DicomTransferSyntax.Lookup(uid)
);
}
private void LookupReturnsAdHocTransferSyntax()
{
var uid = new DicomUID("0", "testing", DicomUidType.TransferSyntax);
var ts = DicomTransferSyntax.Lookup(uid);
Assert.NotNull(ts);
Assert.Equal(uid, ts.UID);
// Lookup must not auto-register, as it is invoked from DicomServer.
// auto-registration may cause DoS by sending crafted transfer syntaxes repeatedly,
// which causes internal static dictionary to hold all the transfer syntaxes.
Assert.Null(DicomTransferSyntax.Query(uid));
}