Grails background-thread, Quartz

Question

I'm developing a football manager website, but I can't figure out how to use properly the background-thread plugin and Quartz plugin (there is no much docs). My problem is.. I have a Controller of a Match class, with a function that I need to start at some time. With quartz I have tried to create a job but then I cannot call directly the function (and how many job should I create if I have more match to start?) or I don't know how to do it, and with background-thread I create the service class but then I have no idea how to implement it. Someone Can help me with this? Thanks

EDIT:

Solution in this post:

http://stackoverflow.com/questions/4088259/grails-thread-hibernateexception-no-hibernate-session-bound-to-thread

Answer 1

Some times just need to keep tryng :) With quartz I do like this: class TestJob {

MatchController match = new MatchController()

static triggers = {
    /*
     * firstThread runs every minute from 8 to 9:59 on wednsday
     */
    cron name: 'firstThread', cronExpression: "0 0/1 8-9 ? * WED"
    cron name: 'secondThread', cronExpression: "0 0/5 8-9 ? * WED"
    cron name: 'thirdThread', cronExpression: "0 0/10 8-9 ? * WED"
    cron name: 'forthThread', cronExpression: "0 0/15 8-9 ? * WED"
 }

def group = "MyGroup"

def execute() {
    /*
     *  execute task
     *  call playMatch from match controller
     */
    println "run thread: " + String.format('%tH:%<tM:%<tS.%<tL',System.currentTimeMillis())
    match.playMatch()
}

}

Seems to work. But still wonder I to use background-thread

Answer 2

Background-thread was designed as a simple plugin to just do as the name suggests - run some code in a background thread.

It doesn't give you a handle to the background thread (that I can recall) so it's just a 'set and forget' type of thing.

Quartz is the right choice for what you want to do. I probably wouldn't have the Job calling the controller though. The logic of 'playing a match' sounds like it should be in a service. You can get your services injected into Job classes the same as you can in controllers.

cheers

Lee