/// <summary>
/// Creates the HTTP SOAP web request for GetValues method
/// </summary>
/// <param name="dataCart">The series data cart containing the GetValues parameters</param>
/// <returns>Returns the fully initialized web request object</returns>
public static HttpWebRequest CreatePostRequest(SeriesDataCart dataCart)
{
string url = dataCart.ServURL;
string fullSiteCode = dataCart.SiteCode;
string fullVariableCode = dataCart.VariableCode;
DateTime startDate = dataCart.BeginDate;
DateTime endDate = dataCart.EndDate;
url = url.Trim().ToLower();
//for http request, we need to remove the ?WSDL part from the url
if (url.EndsWith("?wsdl"))
{
url = url.Replace("?wsdl", "");
}
//get the valid SOAP namespace
string soapNamespace = GetCuahsiSoapNamespace(url);
//create the SOAP Envelope
string soapEnvelope = CreateSoapEnvelope(soapNamespace, fullSiteCode, fullVariableCode, startDate, endDate);
//send the SOAP envelope to the service as a xml document
XmlDocument doc = new XmlDocument();
doc.Load(new StringReader(soapEnvelope));
HttpWebRequest req = (HttpWebRequest)WebRequest.Create(url);
//this is the valid SoapAction header for GetValues web method
string soapAction = soapNamespace + "GetValuesObject";
req.Headers.Add("SOAPAction", soapAction);
req.ContentType = "text/xml;charset=\"utf-8\"";
req.Accept = "text/xml";
req.Method = "POST";
Stream stm = req.GetRequestStream();
doc.Save(stm);
stm.Close();
return req;
}
/// <summary>
/// Gets the name of the data cart
/// </summary>
/// <param name="cart">the series data cart object</param>
/// <returns>the unique name of the series data cart</returns>
public static string GetDataCartName(SeriesDataCart cart)
{
string str = String.Format("{0}-{1}", cart.SiteCode, cart.VariableCode);
string str2 = str.Replace("/", "_");
string str3 = str2.Replace(@"\", "_");
string str4 = str3.Replace(":", "_");
return str4;
}
/// <summary>
/// Given a Series Data cart, creates a GetValues web request
/// </summary>
/// <param name="dc">the series data cart containing information about the site, variable, begin data and end date</param>
/// <returns>the web request for getting the values</returns>
public static HttpWebRequest CreateGetValuesRequest(SeriesDataCart dc)
{
return CreateGetValuesRequest(dc.ServURL, dc.SiteCode, dc.VariableCode, dc.BeginDate, dc.EndDate);
}
/// <summary>
/// Read the list of series from the XML that is returned by HIS Central
/// </summary>
/// <param name="reader">the xml reader</param>
/// <returns>the list of intermediate 'SeriesDataCart' objects</returns>
private SeriesDataCart ReadSeriesFromHISCentral(XmlReader reader)
{
var series = new SeriesDataCart();
while (reader.Read())
{
var nodeName = reader.Name.ToLower();
if (reader.NodeType == XmlNodeType.Element)
{
switch (nodeName)
{
case "servcode":
reader.Read();
series.ServCode = reader.Value;
break;
case "servurl":
reader.Read();
series.ServURL = reader.Value;
break;
case "location":
reader.Read();
series.SiteCode = reader.Value;
break;
case "varcode":
reader.Read();
series.VariableCode = reader.Value;
break;
case "varname":
reader.Read();
series.VariableName = reader.Value;
break;
case "begindate":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.BeginDate = Convert.ToDateTime(reader.Value, _invariantCulture);
else
return null;
break;
case "enddate":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.EndDate = Convert.ToDateTime(reader.Value, _invariantCulture);
else
return null;
break;
case "valuecount":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.ValueCount = Convert.ToInt32(reader.Value);
else
return null;
break;
case "sitename":
reader.Read();
series.SiteName = reader.Value;
break;
case "latitude":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.Latitude = Convert.ToDouble(reader.Value, CultureInfo.InvariantCulture);
else
return null;
break;
case "longitude":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.Longitude = Convert.ToDouble(reader.Value, CultureInfo.InvariantCulture);
else
return null;
break;
case "datatype":
reader.Read();
series.DataType = reader.Value;
break;
case "valuetype":
reader.Read();
series.ValueType = reader.Value;
break;
case "samplemedium":
reader.Read();
series.SampleMedium = reader.Value;
break;
case "timeunits":
reader.Read();
series.TimeUnit = reader.Value;
break;
case "conceptkeyword":
reader.Read();
series.ConceptKeyword = reader.Value;
break;
case "gencategory":
reader.Read();
series.GeneralCategory = reader.Value;
break;
case "timesupport":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.TimeSupport = Convert.ToDouble(reader.Value, CultureInfo.InvariantCulture);
break;
case "isregular":
reader.Read();
if (!String.IsNullOrWhiteSpace(reader.Value))
series.IsRegular = Convert.ToBoolean(reader.Value);
break;
case "variableunits":
reader.Read();
series.VariableUnits = reader.Value;
break;
}
}
else if (reader.NodeType == XmlNodeType.EndElement && nodeName == "seriesrecord")
{
return series;
}
}
return null;
}
private static void PopulateDataRow(SeriesDataCart series, DataRow row)
{
row["DataSource"] = series.ServCode;
row["SiteName"] = series.SiteName;
row["VarName"] = series.VariableName;
row["SiteCode"] = series.SiteCode;
row["VarCode"] = series.VariableCode;
row["Keyword"] = series.ConceptKeyword;
row["ValueCount"] = series.ValueCount;
row["StartDate"] = series.BeginDate.ToString("yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture);
row["EndDate"] = series.EndDate.ToString("yyyy-MM-dd HH:mm", CultureInfo.InvariantCulture);
row["ServiceURL"] = series.ServURL;
row["ServiceCode"] = series.ServCode;
row["DataType"] = series.DataType;
row["ValueType"] = series.ValueType;
row["SampleMed"] = series.SampleMedium;
row["TimeUnits"] = series.TimeUnit;
row["TimeSupport"] = series.TimeSupport;
row["Latitude"] = series.Latitude;
row["Longitude"] = series.Longitude;
row["IsRegular"] = series.IsRegular;
row["Units"] = series.VariableUnits;
}
/// <summary>
/// Adds series to an existing feature set
/// </summary>
/// <param name="series">Series</param>
/// <param name="fs">Feature set</param>
private static void AddToFeatureSet(SeriesDataCart series, IFeatureSet fs)
{
double lat = series.Latitude;
double lon = series.Longitude;
var coord = new Coordinate(lon, lat);
var f = new Feature(FeatureType.Point, new[] {coord});
fs.Features.Add(f);
var row = f.DataRow;
PopulateDataRow(series, row);
}
/// <summary>
/// Updates BeginDate/EndDate/ValueCount in the SeriesDataCart to the user-specified range
/// </summary>
/// <param name="series">Series to update</param>
/// <param name="startDate">User-specified startDate</param>
/// <param name="endDate">User-specified endDate</param>
public static void UpdateDataCartToDateInterval(SeriesDataCart series, DateTime startDate, DateTime endDate)
{
// Update BeginDate/EndDate/ValueCount to the user-specified range
var seriesStartDate = series.BeginDate < startDate ? startDate : series.BeginDate;
// Fix http://hydrodesktop.codeplex.com/workitem/8468
// HIS Central sometimes doesn't contains actual end dates for datasets,
// so always set end date of series to user-specified endDate.
var seriesEndDate = endDate; //var seriesEndDate = series.EndDate > endDate ? endDate : series.EndDate;
var serverDateRange = series.EndDate.Subtract(series.BeginDate);
var userDateRange = seriesEndDate.Subtract(seriesStartDate);
var userFromServerPercentage = serverDateRange.TotalDays > 0
? userDateRange.TotalDays / serverDateRange.TotalDays
: 1.0;
if (userFromServerPercentage > 1.0)
userFromServerPercentage = 1.0;
var esimatedValueCount = (int)(series.ValueCount * userFromServerPercentage);
series.ValueCount = esimatedValueCount;
series.BeginDate = seriesStartDate;
series.EndDate = seriesEndDate;
}
