/// <summary>
/// This should return DataConnection since every query element represents exactly one connection
/// In special cases (SPList, Soap) we defer to a subclass to mine more data.
/// </summary>
/// <param name="queryElement"></param>
/// <returns></returns>
private static DataConnection ParseDataConnection(XElement queryElement)
{
XElement dataConnection = queryElement.Element(xsfNamespace + spListConnection);
if (dataConnection != null)
return SPListConnection.Parse(dataConnection);
else if ((dataConnection = queryElement.Element(xsfNamespace + spListConnectionRW)) != null)
return SPListConnection.Parse(dataConnection);
else if ((dataConnection = queryElement.Element(xsfNamespace + soapConnection)) != null)
return SoapConnection.Parse(dataConnection);
else if ((dataConnection = queryElement.Element(xsfNamespace + xmlConnection)) != null)
return XmlConnection.Parse(dataConnection);
else if ((dataConnection = queryElement.Element(xsfNamespace + adoConnection)) != null)
return AdoConnection.Parse(dataConnection);
// else just grab the type and log that. Nothing else to do here.
foreach (XElement x in queryElement.Elements())
{
if (dataConnection != null) throw new ArgumentException("More than one adapter found under a query node");
dataConnection = x;
}
if (dataConnection == null) throw new ArgumentException("No adapter found under query node");
DataConnection dc = new DataConnection();
dc.ConnectionType = dataConnection.Name.LocalName;
return dc;
}
public static XmlConnection Parse(XElement dataConnection)
{
XmlConnection xc = null;
bool isRest = IsConnectionRest(dataConnection);
xc = isRest ? new RESTConnection() : new XmlConnection();
xc.Url = dataConnection.Attribute(fileUrlAttribute).Value;
return xc;
}
public static DataConnection Parse(XElement dataConnection)
{
XmlConnection xc = null;
bool isRest = IsConnectionRest(dataConnection);
xc = isRest ? new RESTConnection() : new XmlConnection();
string fileUrl = dataConnection.Attribute(fileUrlAttribute).Value;
if (!String.IsNullOrEmpty(fileUrl))
{
// We have an embedded XmlConnection
xc.Url = dataConnection.Attribute(fileUrlAttribute).Value;
return(xc);
}
else
{
// The XmlConnection is stored in a UDCX connection file
XElement udcExtension = FindChild(dataConnection);
return(UdcConnection.Parse(dataConnection, udcExtension));
}
}