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Blanking StringList attributes

Andrea Perniciano (33) | asked Oct 09 '14, 2:51 a.m.
Hi all,
is there anybody out there than can help me on how to blank out a string list attribute based on the change of the "filed against" attribute ?

I had to use the string list (associated to a HTTP Filtered Value Set) because  there is not the possibility to manage a dependent enumeration value set for enumeration list attributes. My set of values depends upon the Work item category, and when I change this attribute I need to clean up my string list attribute because it usually contains incoherent values if populated with a different work item category.

My solution should be to clean out the string list on the change of the category, and I would like to do it at client level, with any type of attribute customization, but I dont know how to do it. I tried with multi line text and javascript providers with no results: would you please help me ?

kind regards

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Ralph Schoon (61.1k33643) | answered Oct 09 '14, 4:47 a.m.
Hi Andrea,

I tried JavaScript and it does not work. This script should do it:
 * Licensed Materials - Property of IBM
 * (c) Copyright IBM Corporation 2011. All Rights Reserved.
 * Note to U.S. Government Users Restricted Rights:  
 * Use, duplication or disclosure restricted by GSA ADP Schedule 
 * Contract with IBM Corp. 

(function() {
	var WorkItemAttributes =;
    dojo.declare("com.example.CleanListValueProvider", null, {

        getValue: function(attribute, workItem, configuration) {
            //var category = workItem.getValue(WorkItemAttributes.FILED_AGAINST);
            var category = workItem.getLabel(WorkItemAttributes.FILED_AGAINST);
            console.log("Category: " + category);
            if (category=="Core"){
            	 //var result= [];	
            	 var result= null;	
			     return result;
			// var result= null; // Works but not desired
			return workItem.getValue(attribute); // java.lang.String incompatible with java.util.Collection

Unfortunately it does not.  I can basically not even return the original value of the attribute (to not change the value in case it is not supposed to be). I think List attributes are currently at least not supported in JavaScript based calculated values. They work only for value sets. Feel free to file a defect or enhancement request.

I can only return null to clear the values, but since I always have to return a value, that means it will always clear the attribute if the category changes. Not very helpful.

you could try to follow and create a calculated value in Java. In this case you can return a List or Collection of string values, which should work.

Andrea Perniciano selected this answer as the correct answer

Andrea Perniciano commented Oct 09 '14, 7:37 a.m.

Hi Ralph,
I actually tried something like that, and I agree there are some more work to do with the xList attribute types to enhance their usability.

I'll try to work on a java attribute validation

Thank you

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