public void Handle(SetParentCommand command, ICommandExecutionContext context)
{
foreach (var formerParentId in context.GetRelated(this, x => x.Parent))
{
context.Detach(this, x => x.Parent, formerParentId);
}
context.Attach(this, x => x.Parent, command.ParentNodeId);
}
public void Handle(SetHierarchyRootCommand command, ICommandExecutionContext context)
{
foreach (var formerRootId in context.GetRelated(this, x => x.RootNode))
{
context.Detach(this, x => x.RootNode, formerRootId);
}
context.Attach(this, x => x.RootNode, command.NodeId);
}
public static IEnumerable <ObjectId> GetRelated <TCommand, TTarget, TValue>(this ICommandExecutionContext context, ITypedCommandHandler <TCommand, TTarget> handler, Expression <Func <TTarget, TValue> > propertyExpression)
where TCommand : TypedCommand <TTarget>
{
return(context.GetRelated(GetRelationName(propertyExpression)));
}