/// <summary>
/// Creates a prime meridian given a code.
/// </summary>
/// <param name="code">The EPSG code of the prime meridian.</param>
/// <returns>An object that implements the IPrimeMeridian interface.</returns>
public IPrimeMeridian CreatePrimeMeridian(string code)
{
if (code == null)
{
throw new ArgumentNullException("code");
}
string sqlQuery =
"SELECT PRIME_MERIDIAN_CODE, PRIME_MERIDIAN_NAME,GREENWICH_LONGITUDE," +
" UOM_CODE,REMARKS,INFORMATION_SOURCE,DATA_SOURCE "+
"FROM [Prime Meridian]" +
"WHERE PRIME_MERIDIAN_CODE={0}";
sqlQuery = String.Format(System.Globalization.CultureInfo.InvariantCulture, sqlQuery, code);
IDataReader reader = Database.ExecuteQuery(_databaseConnection, sqlQuery);
IPrimeMeridian primeMeridian = null;
bool recordFound = reader.Read();
if (!recordFound)
{
throw new ArgumentOutOfRangeException(String.Format(System.Globalization.CultureInfo.InvariantCulture, "Prime meridian with a code of '{0}' was not found in the database.", code));
}
double degreesFromGreenwich = (double)reader["GREENWICH_LONGITUDE"];
string remarks = reader["REMARKS"].ToString();
string name = reader["PRIME_MERIDIAN_NAME"].ToString();
string datasource = reader["DATA_SOURCE"].ToString();
string unitsOfMeasure = reader["UOM_CODE"].ToString();
Database.CheckOneRow(reader, code, "Prime meridian");
IAngularUnit degrees = this.CreateAngularUnit(unitsOfMeasure);
primeMeridian = new PrimeMeridian(name, degrees, degreesFromGreenwich, remarks, datasource, code, "", "");
return(primeMeridian);
}
public void Test_Test1()
{
AngularUnit angularUnit = new AngularUnit(0.5);
PrimeMeridian primeMeridian = new PrimeMeridian("name",angularUnit,5.0,"remarks",
"authority","authorityCode","alias","abbreviation");
Assertion.AssertEquals("Test 1", "abbreviation", primeMeridian.Abbreviation);
Assertion.AssertEquals("Test 2", "alias", primeMeridian.Alias);
Assertion.AssertEquals("Test 3", "authority", primeMeridian.Authority);
Assertion.AssertEquals("Test 4", "authorityCode", primeMeridian.AuthorityCode);
Assertion.AssertEquals("Test 5", "name", primeMeridian.Name);
Assertion.AssertEquals("Test 6", "remarks", primeMeridian.Remarks);
Assertion.AssertEquals("Test 7", angularUnit, primeMeridian.AngularUnit);
Assertion.AssertEquals("Test 8",2.5,primeMeridian.Longitude);
}
/// <summary>
/// Creates a prime meridian given a code.
/// </summary>
/// <param name="code">The EPSG code of the prime meridian.</param>
/// <returns>An object that implements the IPrimeMeridian interface.</returns>
public IPrimeMeridian CreatePrimeMeridian(string code)
{
if (code==null)
{
throw new ArgumentNullException("code");
}
string sqlQuery =
"SELECT PRIME_MERIDIAN_CODE, PRIME_MERIDIAN_NAME,GREENWICH_LONGITUDE,"+
" UOM_CODE,REMARKS,INFORMATION_SOURCE,DATA_SOURCE "+
"FROM [Prime Meridian]"+
"WHERE PRIME_MERIDIAN_CODE={0}";
sqlQuery = String.Format(sqlQuery, code);
IDataReader reader = Database.ExecuteQuery(_databaseConnection, sqlQuery);
IPrimeMeridian primeMeridian = null;
bool recordFound = reader.Read();
if (!recordFound)
{
throw new ArgumentOutOfRangeException(String.Format("Prime meridian with a code of '{0}' was not found in the database.",code));
}
double degreesFromGreenwich = (double)reader["GREENWICH_LONGITUDE"];
string remarks = reader["REMARKS"].ToString();
string name = reader["PRIME_MERIDIAN_NAME"].ToString();
string datasource = reader["DATA_SOURCE"].ToString();
string unitsOfMeasure = reader["UOM_CODE"].ToString();
Database.CheckOneRow(reader, code, "Prime meridian");
IAngularUnit degrees = this.CreateAngularUnit(unitsOfMeasure);
primeMeridian = new PrimeMeridian(name, degrees, degreesFromGreenwich,remarks,datasource,code,"","");
return primeMeridian;
}
private static IPrimeMeridian ReadPrimeMeridian(XmlTextReader reader)
{
/*
* <?xml version="1.0"?>
<IPrimeMeridian Longitude="0">
<IInfo AuthorityCode="8901" Authority="EPSG" Name="Greenwich"/>
<IAngularUnit RadiansPerUnit="1.74532925199433E-02">
<IInfo AuthorityCode="9110" Authority="EPSG" Name="DDD.MMSSsss"/>
</IAngularUnit>
</IPrimeMeridian>
*/
double longitude = XmlConvert.ToDouble(reader.GetAttribute("Longitude"));
string authority="",authorityCode="",abbreviation="",name="";
reader.Read();
ReadInfo(reader, ref authority,ref authorityCode, ref abbreviation, ref name);
IAngularUnit angularUnit = ReadAngularUnit( reader );
reader.Read();
IPrimeMeridian primeMeridian = new PrimeMeridian(name, angularUnit,longitude,"",authority,authorityCode,"",abbreviation);
return primeMeridian;
}
private static IPrimeMeridian ReadPrimeMeridian(WktStreamTokenizer tokenizer)
{
//PRIMEM["Greenwich",0,AUTHORITY["EPSG","8901"]]
tokenizer.ReadToken("[");
string name=tokenizer.ReadDoubleQuotedWord();
tokenizer.ReadToken(",");
tokenizer.NextToken();
double longitude = tokenizer.GetNumericValue();
tokenizer.ReadToken(",");
string authority="";
string authorityCode="";
tokenizer.ReadAuthority(ref authority, ref authorityCode);
// make an assumption about the Angular units - degrees.
IPrimeMeridian primeMeridian = new PrimeMeridian(name,new AngularUnit(180/Math.PI),longitude,"",authority,authorityCode,"","");
tokenizer.ReadToken("]");
return primeMeridian;
}