Must load relations column when remove delete one?

Android
1

Before parse.com, when I remove one, just call getRelation().remove({ Object Instance }).

It doesn’t needed load all relations data.

Backendless just guided using List<{Relate Object}>.remove({ Relate object instance }) and saving Object.

If I need delete someone, must loading relations for it like that?

is any other case have?

2

Example)
** this condition : not loaded relations data.

Place.class

class Place {
     .....
     List&lt;BackendlessUser&gt; favorites = new ArrayList&lt;BackendlessUser&gt;();

}

when User bookmarked :

place.favorites.add(User.class);
Backendless.Persistence.of(Place.class).save(place);

when user unbookmarked :

place.favorites.remove(User);  // it can be? not loaded relations(favorites) data yet.
Backendless.Persistence.of(Place.class).save(place);
3

Hi Clark,

In case you just want to delete relation (unlink objects), here is the code you should use (it’s from the docs):

Backendless.Data.of( "Person" ).deleteRelation( parentObject, "address", children, 
                                             new AsyncCallback&lt;Void&gt;()
{
  @Override
  public void handleResponse( Void response )
  {
    Log.i( "MYAPP", "relation has been deleted" );
  }
 
  @Override
  public void handleFault( BackendlessFault fault )
  {
    Log.e( "MYAPP", "server reported an error - " + fault.getMessage() );
  }
} );
4

How about 3.x?

5

There’s no such API for 3.x, in that version you’ll have to load relations and save the parent object, as you described.