Question

I’m having problems with ModelComparer. Here is the code:

mycombobox.getStore().setModelComparer(new ModelComparer<BeanModel>() {

    @Override
    public boolean equals(BeanModel m1, BeanModel m2) {
        System.out.println("HEY.");
        if(m1 == null) return false;
        if(m2 == null) return false;
        return (((mycomboelement)m1.getBean()).getId()==((mycomboelement)m2.getBean()).getId());
    }
});

The ModelComparer I defined does not work at all. When I call

abeanmodel = mycombobox.getStore().findModel(x);

the variable abeanmodel is always null, neither the message “HEY.” is printed on console. I can’t figure out what’s wrong. I’m using gxt-2.2.3. TIA.

Francesco

Answer 1

I got the answer. Terrel was right. I’ve to post some more code.
When I execute:

mycombobox.getStore().findModel(x);

I check my BeanModel x against an empty store. That’s because of GWT’s asynchronous call execution. To get the code working I have to implement a LoadListener:

mycombobox.getStore().getLoader().addLoadListener(new LoadListener(){
    @Override
public void loaderLoad(LoadEvent le) {
    abeanmodel = mycombobox.getStore().findModel(x);
}
});

now I’m sure to check my BeanModel x against a store filled with data.
I hope this helps. Thank you.

Francesco