[jira] [Comment Edited] (WW-4707) Multiselect parameter behavior different between struts 2.5.5 and 2.5.1

["adam brin (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/WW-4707?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15626364#comment-15626364 ] 

adam brin edited comment on WW-4707 at 11/1/16 7:06 PM:
--------------------------------------------------------

In our system, includedStatuses is initialized as an empty ArrayList e.g.:

{{private List<Status> includedStatues = new ArrayList<>();}}


URL: http://localhost:8080/search/results?&groups%5B0%5D.fieldTypes%5B1%5D=DATE_CREATED&groups%5B0%5D.createdDates%5B1%5D.start=2001&groups%5B0%5D.createdDates%5B1%5D.end=2009&__multiselect_includedStatuses=



*v.2.5.1*  - Struts processes the url parameters and includedStatuses is still an empty ArrayList<>(); (so either it was set to be an empty array list, or .clear() was called on the List).
*v.2.5.5*  - Struts processes the url parameters and includedStatuses is NULL.



was (Author: abrin):
In our system, includedStatuses is initialized as an empty ArrayList e.g.:

{{private List<Status> includedStatues = new ArrayList<>();}}


URL: http://localhost:8080/search/results?&groups%5B0%5D.fieldTypes%5B1%5D=DATE_CREATED&groups%5B0%5D.createdDates%5B1%5D.start=2001&groups%5B0%5D.createdDates%5B1%5D.end=2009&__multiselect_includedStatuses=


v.2.5.1  - Struts processes the url parameters and includedStatuses is still an empty ArrayList<>(); (so either it was set to be an empty array list, or .clear() was called on the List).
v.2.5.5  - Struts processes the url parameters and includedStatuses is NULL.


> Multiselect parameter behavior different between struts 2.5.5 and 2.5.1
> -----------------------------------------------------------------------
>
>                 Key: WW-4707
>                 URL: https://issues.apache.org/jira/browse/WW-4707
>             Project: Struts 2
>          Issue Type: Bug
>    Affects Versions: 2.5.5
>            Reporter: adam brin
>            Assignee: Lukasz Lenart
>            Priority: Minor
>             Fix For: 2.5.6
>
>
> Note: not 100% sure this is a bug, but it's a definite change in behavior:
> The implementation of Parameter.Request changes behaviors such that "clearing" a multiselect parameter {{__multiselect_includedStatuses=}} sets {{includedStatuses = null}} while the older behavior did something different (probably called "clear()."



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