public object GetValue(int i)
{
if (_enumerator.Current == null)
{
return(null);
}
try
{
object value;
try
{
value = _currentEntityTypeSelectors[i](_enumerator.Current);
#if NET45
var dbgeo = value as DbGeography;
if (dbgeo != null)
{
return(Provider.GetSqlGeography(dbgeo.WellKnownValue.WellKnownText, dbgeo.CoordinateSystemId));
}
var dbgeom = value as DbGeometry;
if (dbgeom != null)
{
return(Provider.GetSqlGeometry(dbgeom.WellKnownValue.WellKnownText, dbgeom.CoordinateSystemId));
}
#endif
}
catch (KeyNotFoundException)
{
// current index is not present in given object type. i.e this column is for some sibling
return(null);
}
// todo - option: copy referenced objects - if it improves performance
if (Cols[i].IsNavigationProperty)
{
return(value);
//return 0;
//var prop = Cols[i].Type.GetProperty(Cols[i].TableMapping.Pk.Prop);
var type = Cols[i].Type;
PropertyInfo prop = GetReferenceEntityIdProperty(type, Provider);
//var prop = type.GetProperty(tableMapping.Pks.FirstOrDefault().PropertyName);
//var prop = type.GetProperty(propertyName);
var idValue = prop.GetValue(value);
return(idValue);
}
return(value);
}
catch (NullReferenceException)
{
return(null);
}
}
public object GetValue(int i)
{
if (enumerator.Current == null)
{
return(null);
}
try
{
object value;
try
{
value = currentEntityTypeSelectors[i](enumerator.Current);
#if NET45
if (value is DbGeography dbgeo)
{
return(Provider.GetSqlGeography(dbgeo.WellKnownValue.WellKnownText, dbgeo.CoordinateSystemId));
}
if (value is DbGeometry dbgeom)
{
return(Provider.GetSqlGeometry(dbgeom.WellKnownValue.WellKnownText, dbgeom.CoordinateSystemId));
}
#endif
}
catch (KeyNotFoundException)
{
// current index is not present in given object type. i.e this column is for some sibling
return(null);
}
if (Cols[i].IsNavigationProperty)
{
var col = Cols[i];
var pk = col.EntityMap.Pks.FirstOrDefault();
var navigationType = col.Type;
if (pk == null)
{
return(0);
}
if (!Selectors.TryGetValue(navigationType, out Dictionary <int, Func <T, object> > navSelectors))
{
if (pk == null)
{
return(0);
}
navSelectors = new Dictionary <int, Func <T, object> >();
var x = Expression.Parameter(enumerator.Current.GetType(), "x");
var propNames = $"{col.PropertyName}.{pk.PropertyName}".Split('.');
Expression propertyExpression = Expression.PropertyOrField(x, propNames[0]);
propertyExpression = propNames.Skip(1).Aggregate(propertyExpression, Expression.PropertyOrField);
var expression = Expression.Lambda <Func <T, object> >(Expression.Convert(propertyExpression, typeof(object)), x);
var selector = expression.Compile();
navSelectors[i] = selector;
Selectors[navigationType] = navSelectors;
}
return(navSelectors[i](enumerator.Current));
}
return(value);
}
catch (NullReferenceException)
{
return(null);
}
}