Flex Null Integer

Question

I take data from Java to Flex by AMF (BlazeDS)

In java side object has Integer field. So it can be null.

In Flex side object is int. So null values are deser

Answer 1

We solved this by creating a BeanProxy class which overrides setValue and getValue. In there we return NaN to the flex side if the value is a Number and null, and we return null to the Java side if it's a Double and NaN. Job done:

@Override
public void setValue(Object instance, String propertyName, Object value) {
    if ((value instanceof Double)) {
        Double doubleValue = (Double) value;
        if (doubleValue != null && doubleValue.isNaN()) {
            super.setValue(instance, propertyName, null);
        }
    }else{
          super.setValue(instance, propertyName, value);
        }
}

@Override
public Object getValue(Object obj, String propertyName) {
    final Class classType = super.getType(obj, propertyName);
    if (isNumber(classType) && super.getValue(obj, propertyName) == null) {
        return Double.NaN;
    }
    return super.getValue(obj, propertyName);
}