Spring databinder reusing

Question

I'm creating few objects in loop using DataBinder. I wonder if it is possible to reuse DataBinder object instead of create it each time.

Is it possible?

Now I have:

while (condition) {
    obj = new MyObj();
    DataBinder db = new DataBinder(obj,"my obj");
    db.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat(dateFormatParam), false));
    // set up binder with some editors etc.
    objectvalues = getValues();
    MutablePropertyValues mpv = new MutablePropertyValues();
    for (int i=0;i<fieldNames.length;i++){
        mpv.add(StringUtils.trim(fieldNames[i]), objectvalues[i]);
    }
    db.bind(mpv);
    // do something with obj...
}

I'd like to have (this is imagination only...):

obj = new MyObj();
DataBinder db = new DataBinder(obj,"my obj");
db.registerCustomEditor(Date.class, new CustomDateEditor(new SimpleDateFormat(dateFormatParam), false));
// set up binder with some editors etc.
MutablePropertyValues mpv = new MutablePropertyValues();
for (int i=0;i<fieldNames.length;i++){
    mpv.add(StringUtils.trim(fieldNames[i]), "empty value");
}
while (condition) {
    objectvalues = getValues();
    for (int i=0;i<fieldNames.length;i++){
        mpv.setPropertyValueAt(objectvalues[i], i);
    }
    db.bind(mpv);
    objCopy = obj.clone();
    // do something with objCopy...
}

Is any safe way to do it like that, to not waste memory and time?

Answer 1

No, target object in DataBinder is final, if you want to bind on another object you are forced to create a new DataBinder for it.