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>