Hi Tony,

I'm using the adjacency model with automatic nodes loading (single ajax calls). You're right… it's not trivial due to the fact that a simple solution would cause an inacceptable amount of ajax calls. So the main target would be to circumvent this problem using one single call but getting all desired information.

A first approach could be to let the expandAll() method send all non-expanded node IDs (or sth. appropriate) via POST to the server which in turn will provide the data as a special crafted JSON array applied to every node ID. All further expandAll()/collapseAll() operations could be done on client-side as the data has to be loaded only once.

Dunno if this is consistent to the current jqgrid infrastructure.

Greetings from Germany.