//public override IObject GetReturnType(IObject myWorkingBase, DBTypeManager myTypeManager)
//{
// return base.GetReturnType(myWorkingBase, myTypeManager);
//}
/// <summary>
/// Calls a webservice to get the current currency conversion ratio of the two given currencies and returns the calling value times the ratio.
/// This method contains the entire logic of the function.
/// </summary>
/// <param name="dbContext">The current DBContext.</param>
/// <param name="myParams">The parameters for the function. Must be two strings, that contains the currency codes. <see cref="CurrencyConverterFunction"/></param>
/// <returns>The currency converted value</returns>
public override Exceptional<FuncParameter> ExecFunc(DBContext dbContext, params FuncParameter[] myParams)
{
var resolvingEdge = (myParams[0].Value as DBTypeAttribute).GetValue();
var source = (CallingObject as IReferenceEdge);
var returningEdge = new EdgeTypeSetOfReferences();
foreach(var dbStream in source.GetAllEdgeDestinations(dbContext.DBObjectCache))
{
if (dbStream.Failed())
{
return new Exceptional<FuncParameter>(dbStream);
}
var hyperEdge = dbStream.Value.GetAttribute(resolvingEdge, resolvingEdge.GetDBType(dbContext.DBTypeManager), dbContext);
if (hyperEdge.Value == null)
{
return new Exceptional<FuncParameter>(new FuncParameter(null));
}
if (hyperEdge.Failed())
{
return new Exceptional<FuncParameter>(hyperEdge);
}
returningEdge.AddRange((hyperEdge.Value as IReferenceEdge).GetAllReferenceIDs(), resolvingEdge.DBTypeUUID);
}
return new Exceptional<FuncParameter>(new FuncParameter(returningEdge, resolvingEdge));
}
