Declaration of seam components

[bbasdeo]

Hello everyone!

I would like to have some help to declare seam components withing a class.  I need to declare the class CalendarDataModelItemImpl as a class and as an array of the class.

The class CalendarDataModelItemImpl:

@Name("calendarDataModelItemImpl")
public class CalendarDataModelItemImpl implements CalendarDataModelItem, Serializable{ ..}

It is accessed from another class in this way :

       @In(create=true)
        private CalendarDataModelItem calendarDataModelItemImpl;

I need to instantiate an array of the class CalendarDataModelItemImpl

How should i declare the array of the CalendarDataModelItemImpl  in seam?

Anyone has an idea about that?

[cash1981]

I am not sure what you are talking about here, but it is nothing seam specific to create an array or list.

I guess you can create an array like this, however I discourage you from using Arrays and using List instead.

 @In(create=true)
  private CalendarDataModelItem[] calendarDataModelItemImpl;

[jamesjmp]

I agree with Shervin, it´s better for you to use Java 5 collections.
For instance, if ArrayList suits you:

 @In(create=true)
 private ArrayList<CalendarDataModelItem> list = new ArrayList<CalendarDataModelItem>();

[asookazian]

The only time I use arrays in Seam apps is when I have to.

Example:

List<Object[]> list = entityManager.createQuery("select c, o from Customer c, Order o where o.customer.customerId = c.customerId and o.orderId = :orderId")
.setParameter("customerId", customerId)
.setParameter("orderId", orderId)
.getResultList();

When there is more than one entity in the select clause, the JPA provider returns a Object[].

Otherwise, try to use the following pattern:

List<foo> list = new ArrayList<foo>();

Same thing applies for Sets:

Set<foo> set = new HashSet<foo>();

interface on the left side, concrete implementation on the right side to support polymorphism (e.g. you can swap in a LinkedList for the ArrayList later if required).