Problems using BeanItemContainer based on Interface

Vaadin 6 / 7 / 8 Framework Data Binding
1

Hi Guys,

We are using Vaadin 7.0.0 in a liferay portlet project.

The use case is very simple: we want to display all deployed portlets in a combobox.

In Liferay the method to get this list is

 PortletLocalServiceUtil.getPortlets(themeDisplay.getCompanyId(), false, false))

This works very well and returns a list of Portlet (interface) objects, which are in fact PortletImpl objects at runtime.

When trying to construct a beanitemcontainer based on the fetched list there are also no problems.

The problems arise when I bind the container to the Combobox.

When starting the application nothing is displayed. I was expecting to see a combobox with a lot of items in it with a caption of the memory address since I did not set the itemcaptionmode.

If i replace the interface with an implementation class it works just fine.

Does this mean you cannot use interface type for beanitemcontainer or am I overlooking something?

Hope you guys can help!

Regards,

Kim

2

Does the Interface contain the Getters and Setters for the properties you want to see?

3

Hi Tobias,

In my case we are talking about the com.liferay.portal.model.Portlet interface (http://docs.liferay.com/portal/6.0/javadocs/com/liferay/portal/model/impl/PortletImpl.html) which indeed has a getter and setter for the property (portletName) I want to see as itemcaption in my combobox.

But even with no itemcaption mode specified I don’t get a filled combobx with memory addresses (which I would expect when no captionmode is specified.

Thx for taking the time to react!

Regards,

Kim

4

Hello Guys,

Problem solved! I was using a wrong id property. Portlet.getId() always returns 0 and this property is used in equals method. So container thinks all elements are the same!

Sorry for bothering!

Regards,

Kim