new-instance-script handler

It is responsible for instantiating new objectswithin a finder on user request .

Attribute	Usage
if	EL expression that must be evaluated to true prior to handler action
unless	EL expression that must be evaluated to false prior to handler action

With the following example the model will alow to create a new city within a country:

<datanode name="country">
    ...
    <finder name="cities" type="city" >
        <collection-finder collection="${instance.cities}">
        <new-instance-script>
            c = new City();
            c.countryAbbreviation = instance.abbreviation;
            return c;
        </new-instance-script>
    </finder>
    ...
</datanode>