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Cannot add an array to a collection using addAll in Velocity

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Michael Hamann created this issue on 19/Dec/25 15:58

Summary:	Cannot add an array to a collection using addAll in Velocity
Issue Type:	Bug
Affects Versions:	16.10.0
Assignee:	Unassigned
Components:	Velocity
Created:	19/Dec/25 15:58
Priority:	Major
Reporter:	Michael Hamann
Description:	Steps to reproduce: Execute the following Velocity code in XWiki: #set ($mySet = $collectiontool.getOrderedSet()) #set ($myString = 'a few words') #set ($myArray = $stringtool.split($myString, ' ')) #set ($discard = $mySet.addAll($myArray)) $mySet Expected result: [a, few, words] Actual result: [] The root cause seems to be that the conversion of the argument fails because during the conversion the type variable isn't resolved.

1 update

Changes by Michael Hamann on 19/Dec/25 16:07

Description:

*Steps to reproduce:*

Execute the following Velocity code in XWiki:
{noformat}
#set ($mySet = $collectiontool.getOrderedSet())
#set ($myString = 'a few words')
#set ($myArray = $stringtool.split($myString, ' '))
#set ($discard = $mySet.addAll($myArray))
$mySet
{noformat}

*Expected result:*

{noformat}
[a, few, words]
{noformat}

*Actual result:*

{noformat}
[]
{noformat}

The root cause seems to be that the conversion of the argument fails because during the conversion the type variable isn't resolved.

See XCOMMONS-129 for a workaround how to convert the array to a list first.

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