package  sample.dynamic;


/**
 * This class pulls WorkUnit instances from a Queue
 * and performs a certain amount of "work", specified
 * by workFactor.
 *
 * This class is identical to smaple.standard.Consumer.
 * We could have used that class in our example. However,
 * it has been copied into the dynamic package so that it
 * may inherit from dynamic.Basic instead of sample.standard.Basic.
 */
public class Consumer extends Worker {
    public static final String ROLE = "Consumer";
    private static final int DEFAULT_WORK_FACTOR = 100;

    public Consumer (Queue queue) {
        this(queue, DEFAULT_WORK_FACTOR);
    }
    public Consumer (Queue inputQueue, int workFactor) {
        super(inputQueue, workFactor);
    }

    public void run () {
        //**********
        // This is where the "work" takes place. In a real-world
        /// application that uses this pattern, this logic would
        /// be replaced by the real application logic.
        //**********
        _queue.addConsumer();
        while (!_stopCalled) {
            while (_suspended) {
                try {
                    Thread.sleep(1000);
                } catch (InterruptedException e) {}
            }
            WorkUnit unit = (WorkUnit)_queue.remove();
            // Burn some cycles...
            calculatePrimes(_workFactor);
            _numberOfUnitsProcessed++;
        }
        _queue.removeConsumer();
    }
}