BridgeHandler - Handler for a collection attribute

The bridgeHandler class is a handler for collection attributes. It allows to iterate through the collection, add new elements to the collection, remove elements and re-order the elements inside the collection ( elements in XEO's collections are ordered). Bellow is the list of methods that allow interaction with a collection attribute

Definition

Methods in these category allow to query the Object Model definition for the given collection attribute

Method name	Description	Parameters	Return type	Notes
getName	Retrieves the name of the collection attribute (as declared in the Object Model)	-	String
getDefAttribute	Retrieves the handler for the Object Model definition of the collection attribute	-	boDefAttribute

_

Iteration

Iteration methods allow to iterate through elements of the collection as well as interacting with the content of the collection. As explained before, the collection attribute contains an ordered list of elements and can be iterated from the first to the last element (collection attributes are not paged, like boObjectList instances).

_

Behavior

Collection attributes, like non-collection attributes, have associated behavior which can be invoked/queried through the API. The following methods are available:

valid()- Não funciona

hiddenWhen() - Não funciona

defaultValue() - Não funciona

formula() - Não funciona

_

Sample Code : Iterating through a collection attribute and updating the objects

_

        boObject obj = ... //loadObject; 
        //Retrieve the bridge
        bridgeHandler collectionHandler = obj.getBridge("collectionAttributeName");
        boBridgeIterator it = collectionHandler.iterator();
        //Iterate through all elements
        while (it.next()){
            try {
                //Retrieve the current object
                boObject current = it.currentRow().getObject();
                //Change a value and update
                current.getAttribute("foo").setValueString("bar");
                current.update();
            } catch (boRuntimeException e) {
                //Deal with the exception
            }
        }

_