public static void CopyIncludeInformation(NavigationTreeNode originalNavigationTree, NavigationTreeNode newNavigationTree, SourceMapping newSourceMapping)
{
foreach (var child in originalNavigationTree.Children.Where(n => n.IncludeState == NavigationState.Pending))
{
var copy = NavigationTreeNode.Create(newSourceMapping, child.Navigation, newNavigationTree, true);
CopyIncludeInformation(child, copy, newSourceMapping);
}
}
private Expression TryBindProperty(Expression originalExpression, Expression newExpression, string navigationMemberName)
{
if (newExpression is NavigationBindingExpression navigationBindingExpression)
{
if (navigationBindingExpression.RootParameter == _rootParameter)
{
var navigation = navigationBindingExpression.EntityType.FindNavigation(navigationMemberName);
if (navigation != null)
{
var navigationTreeNode = NavigationTreeNode.Create(
navigationBindingExpression.SourceMapping, navigation, navigationBindingExpression.NavigationTreeNode, _bindInclude);
return(new NavigationBindingExpression(
navigationBindingExpression.RootParameter,
navigationTreeNode,
navigation.GetTargetType(),
navigationBindingExpression.SourceMapping,
originalExpression.Type));
}
}
}
else
{
foreach (var sourceMapping in _sourceMappings)
{
var candidates = sourceMapping.NavigationTree.Flatten()
.SelectMany(n => n.FromMappings, (n, m) => (navigationTreeNode: n, path: m)).ToList();
var match = TryFindMatchingNavigationTreeNode(originalExpression, candidates);
if (match.navigationTreeNode != null)
{
return(new NavigationBindingExpression(
match.rootParameter,
match.navigationTreeNode,
match.navigationTreeNode.Navigation?.GetTargetType() ?? sourceMapping.RootEntityType,
sourceMapping,
originalExpression.Type));
}
}
}
return(null);
}