private string GetOrganization(XmlNode childrenNode, XmlNamespaceManager nsmgr, Dataset dataset)
{
string organization = "";
if (dataset != null && dataset.Url.Contains("miljodirektoratet"))
{
nsmgr.RemoveNamespace("gn", "http://geonorge.no/Atom");
nsmgr.AddNamespace("gn", "http://geonorge.no/geonorge");
}
var organizationGN = childrenNode.SelectSingleNode("a:author/gn:organisation", nsmgr);
if (organizationGN != null)
{
organization = organizationGN.InnerXml;
}
else if (childrenNode.SelectSingleNode("a:author/a:name", nsmgr) != null)
{
organization = childrenNode.SelectSingleNode("a:author/a:name", nsmgr).InnerXml;
}
else
{
organization = "Kartverket";
}
if (dataset != null && string.IsNullOrEmpty(dataset.Organization) && dataset.Url.Contains("ngu.no"))
{
organization = "Norges geologiske undersøkelse";
}
else if (dataset != null && string.IsNullOrEmpty(dataset.Organization) && dataset.Url.Contains("nibio.no"))
{
organization = "Norsk institutt for bioøkonomi";
}
if (organization == "Geonorge")
{
organization = "Kartverket";
}
return(organization);
}
public List <Dataset> ParseDatasets(string xml)
{
var datasets = new List <Dataset>();
XmlDocument xmlDoc = new XmlDocument();
xmlDoc.LoadXml(xml);
string xpath = "//a:feed/a:entry";
XmlNamespaceManager nsmgr = new XmlNamespaceManager(xmlDoc.NameTable);
nsmgr.AddNamespace("a", "http://www.w3.org/2005/Atom");
nsmgr.AddNamespace("inspire_dls", "http://inspire.ec.europa.eu/schemas/inspire_dls/1.0");
nsmgr.AddNamespace("gn", "http://geonorge.no/Atom");
var nodes = xmlDoc.SelectNodes(xpath, nsmgr);
if (nodes != null)
{
foreach (XmlNode childrenNode in nodes)
{
var dataset = new Dataset();
var id = childrenNode.SelectSingleNode("a:id", nsmgr);
XmlNode uriAlternate = null;
var alternate = childrenNode.SelectSingleNode("a:link[@rel='alternate']", nsmgr);
if (alternate != null)
{
uriAlternate = alternate.Attributes.GetNamedItem("href");
}
XmlNode url = childrenNode.SelectSingleNode("a:link", nsmgr);
if (uriAlternate != null)
{
dataset.Url = uriAlternate.Value;
}
else if (!string.IsNullOrEmpty(url.InnerXml))
{
dataset.Url = url.InnerXml;
}
else
{
dataset.Url = id.InnerXml;
}
dataset.Url = dataset.Url.Trim();
dataset.LastUpdated = childrenNode.SelectSingleNode("a:updated", nsmgr).InnerXml;
dataset.Organization = GetOrganization(childrenNode, nsmgr, dataset);
dataset.Uuid = childrenNode.SelectSingleNode("inspire_dls:spatial_dataset_identifier_code", nsmgr)?.InnerXml;
if (string.IsNullOrEmpty(dataset.Uuid))
{
if (dataset.Organization == "Miljødirektoratet")
{
dataset.Uuid = childrenNode.SelectSingleNode("gn:uuid", nsmgr)?.InnerXml;
}
else
{
var urlAsUuid = dataset.Url;
var uuid = urlAsUuid.Split('/')?.Last();
if (!string.IsNullOrEmpty(uuid))
{
dataset.Uuid = uuid;
}
}
}
dataset.DatasetFiles = GetDatasetFiles(dataset.Url, dataset);
var formats = dataset.DatasetFiles.Select(f => f.Format).Distinct();
List <SimpleDistribution> distributions = new List <SimpleDistribution>();
foreach (var format in formats)
{
distributions.Add(
new SimpleDistribution
{
Organization = dataset.Organization,
FormatName = FixFormat(format)
});
}
dataset.DistributionsFormats = distributions;
var projections = dataset.DatasetFiles.Select(f => f.Projection).Distinct();
List <SimpleReferenceSystem> referenceSystems = new List <SimpleReferenceSystem>();
foreach (var projection in projections)
{
var system = projection;
if (!system.StartsWith("http"))
{
system = "http://www.opengis.net/def/crs/EPSG/0/" + projection.Replace("EPSG:", "");
}
referenceSystems.Add(
new SimpleReferenceSystem
{
CoordinateSystem = system
});
}
dataset.ReferenceSystems = referenceSystems;
datasets.Add(dataset);
}
}
return(datasets);
}