src/main/java/org/gnunet/requests/RequestContainer.java


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package org.gnunet.requests;


import org.gnunet.mq.Envelope;
import org.gnunet.util.Cancelable;

public abstract class RequestContainer {
    protected boolean overlap = true;

    public abstract static class Request {
        private boolean transmitting;
        private boolean canceled;
        private Cancelable cancelRequest;
        public abstract Envelope assembleRequest();
        public void cancel() {
            throw new AssertionError("request of type " + this.getClass() + " can not be canceled (not implemented)");
        }
    }

    /**
     * Re-send all requests in the queue that have not been canceled.
     */
    public abstract void restart();

    /**
     * Allow or disallow requests to be send while other requests in the queue have not been completed.
     *
     * @param overlap true to allow overlapped requests, false to disallow them
     */
    public void setOverlap(boolean overlap) {
        this.overlap = overlap;
    }

    protected boolean isRequestTransmitting(Request r) {
        return r.transmitting;
    }

    protected void setRequestTransmitting(Request r, boolean transmitting) {
        r.transmitting = transmitting;
    }

    protected void setRequestTransmissionCancel(Request request, Cancelable cancel) {
        request.cancelRequest = cancel;
    }

    protected void cancelRequestTransmission(Request r) {
        r.cancelRequest.cancel();
        r.cancelRequest = null;
    }

    protected void setRequestCancelled(Request r) {
        r.canceled = true;
    }

    protected boolean isRequestCancelled(Request r) {
        return r.canceled;
    }

}