Behavior class for custom attributes

I'm new to this, so this is probably a pretty dumb questions, but here goes....

I have a custom attribute that I want to be able to modify in the behavior class. Whenever I try to get a handle on the attribute (a dropdown list) I get this error: Failed to fetch object : [DM_API_E_BADID]error: "Bad ID given: 0000000000000000".

Here is the code I am executing,and I have verified it is choking on the "getControl".

public class ImportContent extends Component {

public void onInit (ArgumentList arg) {
super.onInit(arg);
DataDropDownList classificationDropDown = (DataDropDownList)getControl("classification",DataDropDownList.class);

}

Can anyone clue me in on what I might be doing wrong?

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Comments

udeleng

What does the JSP fragment for the "classification" DataDropDownList looks like? Seems like something may not be initialized.

You verified this by commenting out the line and you did not get any error, i.e the import?

Also, if you're extending the import component, you should be extending the following class, as well as the import component configuration?

com.documentum.webcomponent.library.contenttransfer.importcontent.ImportContent

Girevik

Since this is a custom attribute, I didn't think there would be anything fot it in the JSP (I've never quite understood how all that works under the hood). Is that something I need to add myself if I'm going to access it in the behavior class?

Not sure about the "extends" either, but I'll give that a try. My only exposure to doing anythig in the behavior class is what we did in a class I was in, and that was crating a very basic custom component rather than extending an existing one.

udeleng

I recommend you carefully read the entire attached WDK tutorial.

Chapters specifically relevant for what you're doing are 9 and 11.

Girevik

Thanks, that helped. Turns out I was extending the wrong class. Now I need to figure out what name it gives to the control for my custom attribute. I had assumed it was the same as the attribute name, but it appears that's not the case.