Keeping a correlated pair of JSpinners in synch

Question

Requests: (1) critique my solution, if you wish, and (2) is there a name
for the technique I'm using, because I know I've seen it and done it before.
Context: I'd like to allow the user to resize images, while preserving their
width:height aspect ratio. The GUI has a pair of JSpinners, for width and height,
and when one is adjusted, the other should change.
Example: if the aspect ratio is 2:1, setting the width spinner to 201 should cause
the height spinner to change to 100 (I truncate), whilst setting the height spinner
to 100 should cause the width spinner to change to 200.
But: I don't want those reactions to cascade: from the example, if the
user sets the width spinner to 201, the height spinner should change to 100, but that
is where it should stop -- the width spinner shouldn't itself react and change to 200.
My solution: I'm a fan of fixing it in the model, and here is my tweak for SpinnerNumberModel:
import javax.swing.*;
public class SafeSpinnerNumberModel extends SpinnerNumberModel {
    public SafeSpinnerNumberModel(int value, int minimum, int maximum, int stepSize) {
        super(value, minimum, maximum, stepSize);
    public void setValue(Object value) {
        if (!inSetValue) {
            inSetValue = true;
            super.setValue(value);
            inSetValue = false;
    private boolean inSetValue;
}In my code, there are two JSpinners (with SafeSpinnerNumberModels),
and each model has a ChangeListener that reacts by adjusting the other model. The
flag stops the potential feedback loop.
So, is how you'd solve this problem? Did I miss anything, and again, what would
you call this technique?
Thanks,
BDLH

Answer 1

Right both BOE servers will point to the FRS on the primary BOE server and the primary CMS database on the SQL server farm.  Then we replicate the primary FRS to the secondary FRS located on the secondary BOE server and the primary CMS database to the secondary CMS database both on the SQL Server farm.
If we need to we'll switch the primary and secondary BOE servers to the secondary FRS (located on the secondary BOE server) and the secondary CMS database on the farm.
I guess what I'm looking for is the best practice for the backup.  I think what I'm hearing is the best route to go is to have the backups as often as you want but the best way to ensure that the backups are in synch is to do them when the CMS and FRS servers are down.  Otherwise they could be out of synch with report requests being executed at the same time.
Right?
Thanks again