Execute batch working when executed anonymously but not when called from my vfp controller

Question

I have a controller that extends a vfp that calls execute on a batch

 BatchableScorer bs = new BatchableScorer(passedContacts);
 ID batchprocessid = Database.executeBatch(bs);

though when it fires up i can see that job hasn't started in the apex jobs list but when i check the status in the debug console it states that it's "holding". If I then look in the Apex Jobs list, that job is not listed. When i go to execute anonymous window and run the code there, though, it runs as expected (and shows in the Job list). Any ideas?

Answer 1

I've never tried to start batch classes from visualforce pages, but I'm fairly confident, the controller extension will need to implement the Database.Batchable Interface for you to do that. See Using Batch Apex for more on this.

Answer 2

got it. in order to use the standard controller to get the selectedContacts and be able to kickoff the batch match was in my vfp page. I use contact as the standardController, recordsetVar of passedContacts, extending BatchProScoreController and applying the action of generateBatch

Action:

    public void generateBatch(){
        ID batchprocessid = Database.executeBatch(this);
    }

and by calling (this) I was able to keep the checked contacts instead of calling a new instance of the BatchProScoreController. Headache

Answer 3

You must be calling batch instance from a method that is called from the constructor of the Visual Force page controller or you must be calling batch instance from the constructor itself. try and call that batch instance from a method that is called on the action of Visual Force page.

Note : you cannot call batch from constructor