Based on you example, you might want to consider defining a global and passing
similarly the to what you show, and in your code where you initialize the
KnowledgeSession, set the global from your Java code. In this way, you can
uniquely identify each session using a uid that you define in your own code.
Like this:
Import java.util.UUID
global UUID uid
rule 'something'
when
......
then
Notification.sendSMS(uid);
End
In JAVA:
private UUID firerulesForSession(StatefulKnowledgeSession kSession) {
final String sourceMethod = "firerulesForSession";
// generate a globally unique ID. Preferably this should be passed in as an
argument.
final UUID uid = UUID.randomUUID();
kSession.setGlobal("uid",uid);
...
log.fine("Preparing Command Factory");
List<Command<?>> cmds = new ArrayList<Command<?>>();
cmds.add(CommandFactory.newInsertElements(facts));
cmds.add(CommandFactory.newFireAllRules());
// start a new process instance
try
{
log.info("Firing Rules: ");
// kSession.execute(getFacts(bbSecurity, packageName));
kSession.execute(CommandFactory.newBatchExecution(cmds));
}
catch (Throwable e)
{
log.throwing(sourceClass, sourceMethod, e);
}
return uuid;
}
Of course you will need to adapt for your solution, and a GUID (UUID) may be
overkill for what you're doing, and since the kSession.execute() is not an
asynchronous call, you need to deal with the uuid before firing the rules, so
that the sendSMS() function will know what the UUID means.
From: rules-users-boun...@lists.jboss.org
[mailto:rules-users-boun...@lists.jboss.org] On Behalf Of Bobby Richards
Sent: Wednesday, April 18, 2012 6:18 PM
To: rules-users@lists.jboss.org
Subject: [rules-users] global identifier
Is there a way to create a 'global' that is completely specific to a drl file
rather than the working memory? I only wish to use this in rhs
notification/persistence operations, ie passing a user's unique id to a db or
sms operation.
I know this does not work but perhaps it will help to better illustrate my
question:
global int user_id = 123;
...
then
notification.sendSMS(user_id);
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