[rules-users] modifying individual facts in rule drl file
Hi
I am using drool to put my application business logic
In my java service class, I am adding into an ArrayList objects: task1,task2
and task3.
list.add(task1);
list.add(task2);
list.add(task3);
new RuleRunner().runRules(new String[] { "ruleTraverseFacts.drl" }, list);
Code in the RuleRunner class is :
public void runRules(String[] rules, ArrayList facts) throws Exception {
// RuleBase contains the rules to be applied to facts
RuleBase ruleBase = RuleBaseFactory.newRuleBase();
PackageBuilder builder = new PackageBuilder();
for (int i = 0; i < rules.length; i++) {
String ruleFile = rules[i];
System.out.println("Loading file: " + ruleFile);
builder.addPackageFromDrl(new
InputStreamReader(RuleRunner.class
.getResourceAsStream("/BusinessRules/" + ruleFile)));
}
Package pkg = builder.getPackage();
ruleBase.addPackage(pkg);
//Facts are inserted in the working Memory of the ruleBase
WorkingMemory workingMemory = ruleBase.newStatefulSession();
Collection factList=new ArrayList();
for (int i = 0; i < facts.size(); i++) {
Object fact = facts.get(i);
System.out.println("Inserting fact: " +
fact.toString());
factList.add(workingMemory.insert(fact));
}
In my .drl class I have defined rules:
package BusinessRules
import model.*
import java.util.*
rule "traverse Collection"
when
$o1 : Task($child : childTasks , childTasks != null)
then
$o1.setWorkHours((getRollUp($child)) + $o1.getWorkHours());
update($o1);
System.out.println("estimated hours" + $o1.getWorkHours());
retract($o1);
end
function int getRollUp(ArrayList child) {
//some code
}
What I would want to do is identify and manipulate individual objects in the
working memory.
like task1.getId();.
All the rules in the drl file are applied to all the facts in working
memory. How can I access individual objects without specifying any
condition?
--
View this message in context:
http://www.nabble.com/modifying-individual-facts-in-rule-drl-file-tp15605...
Sent from the drools - user mailing list archive at Nabble.com.