public static IIncludeQuery <TEntity, TNewProperty> Include <TEntity, TPreviousProperty, TNewProperty>(this IIncludeQuery <TEntity, TPreviousProperty> query, Expression <Func <TEntity, TNewProperty> > selector)
{
query.Visitor.Visit(node: selector);
var includeQuery = new IncludeQuery <TEntity, TNewProperty>(pathMap: query.PathMap);
query.PathMap[key : includeQuery] = query.Visitor.Path;
return(includeQuery);
}
public static IIncludeQuery <TEntity, TNewProperty> ThenInclude <TEntity, TPreviousProperty, TNewProperty>(this IIncludeQuery <TEntity, TPreviousProperty> query, Expression <Func <TPreviousProperty, TNewProperty> > selector)
{
query.Visitor.Visit(node: selector);
// If the visitor did not generated a path, return a new IncludeQuery with an unmodified PathMap.
if (string.IsNullOrEmpty(value: query.Visitor.Path))
{
return(new IncludeQuery <TEntity, TNewProperty>(pathMap: query.PathMap));
}
Dictionary <IIncludeQuery, string> pathMap = query.PathMap;
string existingPath = pathMap[key : query];
pathMap.Remove(key: query);
var includeQuery = new IncludeQuery <TEntity, TNewProperty>(pathMap: query.PathMap);
pathMap[key : includeQuery] = $"{existingPath}.{query.Visitor.Path}";
return(includeQuery);
}
public static IIncludeQuery <TOrigin, TSelected> AlsoInclude <TOrigin, TCurrent, TSelected>(this IIncludeQuery <TOrigin, TCurrent> source, Expression <Func <TCurrent, TSelected> > selector)
{
return(new FaunaQueryableData <TOrigin, TSelected>(source.Provider, Expression.Call(
instance: null,
method: AlsoIncludeMethodInfo.MakeGenericMethod(typeof(TOrigin), typeof(TCurrent), typeof(TSelected)),
arg0: source.Expression,
arg1: selector
)));
}
