/// <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;
}
/// <summary>
/// Self-explanatory
/// </summary>
/// <param name="dataConnection"></param>
/// <returns></returns>
public static SPListConnection Parse(XElement dataConnection)
{
SPListConnection spl = new SPListConnection();
spl.IsV2 = dataConnection.Name.LocalName.Equals("sharepointListAdapterRW");
if (spl.IsV2)
{
spl.SiteUrl = dataConnection.Attribute(siteURLAttribute).Value;
spl.ListGuid = dataConnection.Attribute(listGuidAttribute).Value;
spl.SubmitAllowed = dataConnection.Attribute(submitAllowedAttribute).Value;
spl.RelativeListUrl = dataConnection.Attribute(relativeListUrlAttribute).Value;
// we should also scrape out the queried column types, this shows us what types of data we consume from lists
foreach (XElement fieldElement in dataConnection.Elements(xsfNamespace + field))
{
string fieldType = fieldElement.Attribute(typeAttribute).Value;
spl._bucketCounter.IncrementKey(fieldType);
}
}
else // if (dataConnection.Name.LocalName.Equals("sharepointListAdapter"))
{
spl.SiteUrl = dataConnection.Attribute(siteUrlAttribute).Value;
spl.ListGuid = dataConnection.Attribute(sharepointGuidAttribute).Value;
spl.SubmitAllowed = dataConnection.Attribute(submitAllowedAttribute).Value;
}
return spl;
}