[rules-users] priority based on object properties

Hi all, I am curious if we can inform Drools' execution based on properties within objects. In particular, the salience value is defined for each rule, in the sense that rule A has priority over rule B to execute. I am wondering if we can define some kinda of salience metric, such that object X has higher priority than object Y to be executed in the same rule. To give an example, I am (still) playing with implementing shortest path using a few rules. I have a rule for selecting a shortest path on a node (among all the paths received from its neighbors) to a source node, and another rule for propagating the shortest path on a node to neighboring nodes. When I have many nodes in my graph, I found that the paths propagated (via the second rule) are not always the shortest, while Dijkstra's algorithm always "propagate" from the node with the shortest distance to the source. The effect is that my rules are wasting most of the time propagating paths that would be dropped in the end anyway... Any ideas? Thanks. -Simon