DevForce Community Forum : Add new objects to a ReadOnlyEntityList ... http://www.ideablade.com/forum/ This is an XML content feed of; DevForce Community Forum : DevForce Classic : Add new objects to a ReadOnlyEntityList ... Wed, 10 Jun 2026 18:48:07 -700 Fri, 06 Feb 2009 11:08:34 -700 http://blogs.law.harvard.edu/tech/rss Web Wiz Forums 9.69 360 www.ideablade.com/forum/RSS_post_feed.asp?TID=1081 DevForce Community Forum http://www.ideablade.com/forum/forum_images/IdeaBlade_logo_tm.png http://www.ideablade.com/forum/ Add new objects to a ReadOnlyEntityList ... : Maximiliano, In DevForce Classic,... http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3887#3887 Author: kimj
Subject: 1081
Posted: 06-Feb-2009 at 11:08am

Maximiliano,
 
In DevForce Classic, you can't directly add or remove items from the list returned by a navigation property.  Fortunately, this ReadOnlyEntityList is actually a "live" list and will effectively monitor actions on the PersistenceManager for items to be added or removed.  In your case, you should see new items in the User.Roles list when you create a new "UserRole" entity (and add it to the PM).  I'm assuming that you have some sort of "UserRole" linking entity which contains foreign keys to the "User" and "Role" objects - so to add a specific role to a user you create a new "UserRole" object for that user.
]]> Fri, 06 Feb 2009 11:08:34 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3887#3887 Add new objects to a ReadOnlyEntityList ... : You can't modify a ReadOnlyEntityList... http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3871#3871 Author: davidklitzke
Subject: 1081
Posted: 04-Feb-2009 at 8:31pm

You can't modify a ReadOnlyEntityList (that's why it is a "ReadOnlyEntityList"), but usually you  can create a new ReadOnlyEntityList.  For example, here is how I might modify the Cache strategy for Orders, a ReadOnlyEntityList<Order>

public override ReadOnlyEntityList<Order> Orders {

get {

return new ReadOnlyEntityList<Order>(this.PersistenceManager.GetChildren<Order>(this, EntityRelations.Employee_Order, QueryStrategy.DataSourceThenCache, true));

}

}

]]> Wed, 04 Feb 2009 20:31:50 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3871#3871 Add new objects to a ReadOnlyEntityList ... : Hi, I&#039;m evaluating the product... http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3860#3860 Author: msosa
Subject: 1081
Posted: 04-Feb-2009 at 7:21am

Hi, I'm evaluating the product and so far it very good. The issue I'm dealing with is as folows: I have an User object that has an Roles property, witch is a relation with Rol object; so, an give user can have several roles. I want the administrator to be able to select those roles form a checkedlistbox. What I need to know is how to add those selected roles to the Roles property (a ReadOnlyEntityList) of the User object.

 
Thanks,
Maximiliano.


Edited by msosa - 04-Feb-2009 at 7:21am]]> Wed, 04 Feb 2009 07:21:08 -700 http://www.ideablade.com/forum/forum_posts.asp?TID=1081&PID=3860#3860