internal static DataStream FromXml(string xml)
{
if (xml.IsNullOrEmpty())
{
return(null);
}
var doc = XDocument.Parse(xml);
var ns = doc.Root.GetDefaultNamespace();
var root = doc.Element(ns + "MTConnectStreams");
// this happens on an error
// TODO: get the error text
if (root == null)
{
return(null);
}
var dataStream = new DataStream();
var streams = new List <DeviceStream>();
var header = root.Element(ns + "Header");
var attr = header.Attribute("creationTime");
if (attr != null)
{
try
{
dataStream.CreateTime = DateTime.Parse(attr.Value);
}
catch { }
}
attr = header.Attribute("sender");
if (attr != null)
{
try
{
dataStream.Sender = attr.Value;
}
catch { }
}
attr = header.Attribute("instanceId");
if (attr != null)
{
try
{
dataStream.InstanceID = long.Parse(attr.Value);
}
catch { }
}
attr = header.Attribute("nextSequence");
if (attr != null)
{
try
{
dataStream.NextSequence = int.Parse(attr.Value);
}
catch { }
}
attr = header.Attribute("firstSequence");
if (attr != null)
{
try
{
dataStream.FirstSequence = int.Parse(attr.Value);
}
catch { }
}
attr = header.Attribute("lastSequence");
if (attr != null)
{
try
{
dataStream.LastSequence = int.Parse(attr.Value);
}
catch { }
}
foreach (var deviceStream in root.Element(ns + "Streams").Elements(ns + "DeviceStream"))
{
var ds = DeviceStream.FromXml(ns, deviceStream);
streams.Add(ds);
}
dataStream.DeviceStreams = streams.ToArray();
return(dataStream);
}
internal static DeviceStream FromXml(XNamespace ns, XElement element)
{
var ds = new DeviceStream();
var attr = element.Attribute("name");
if (attr == null)
{
throw new Exception("Device Stream missing 'name' attribute");
}
ds.Name = attr.Value;
attr = element.Attribute("uuid");
if (attr == null)
{
throw new Exception("Device Stream missing 'uuid' attribute");
}
ds.UUID = attr.Value;
// <samples>
var samples = new List <IDataElement>();
var samplesElement = element.Element(ns + "Samples");
if (samplesElement != null)
{
foreach (var s in samplesElement.Elements())
{
samples.Add(DataElementFactory.SampleFromXml(ns, s));
}
}
ds.m_elements.AddRange(samples);
// <events>
var events = new List <IDataElement>();
var eventsElement = element.Element(ns + "Events");
if (eventsElement != null)
{
foreach (var s in eventsElement.Elements())
{
events.Add(DataElementFactory.EventFromXml(ns, s));
}
}
ds.m_elements.AddRange(events);
// <condition>
var conditions = new List <IDataElement>();
foreach (var ce in element.Elements(ns + "Condition"))
{
foreach (var c in ce.Elements())
{
conditions.Add(DataElementFactory.ConditionFromXml(ns, c));
}
}
ds.m_elements.AddRange(conditions);
List <ComponentStream> streams = new List <ComponentStream>();
foreach (var componentStream in element.Elements(ns + "ComponentStream"))
{
streams.Add(ComponentStream.FromXml(ns, componentStream));
}
ds.ComponentStreams = streams.ToArray();
return(ds);
}