Collection-handler Handler

This handler is applicable when the persistence of this object is managed by the parent dataNode. The allowed attributes are:

Attribute	Usage
collection	EL expression that identifies the collection onto which the business object must be added or removed
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

The following example shows how you could manage objects City as a collection of objects within the object Country, which in turn is saved on a disk arhivo:

<datanode name="city">
    <collection-handler collection="${parent.instance.cities}">
</datanode>