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Date: Thu, 13 Mar 2014 06:05:43 +0000 (UTC)
From: "Lukasz Lenart (JIRA)" <jira@apache.org>
To: issues@struts.apache.org
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Subject: [jira] [Updated] (WW-4301) includeProperties Does Not Work with a
 List of Lists
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     [ https://issues.apache.org/jira/browse/WW-4301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart updated WW-4301:
------------------------------

    Fix Version/s: 2.3.x

> includeProperties Does Not Work with a List of Lists
> ----------------------------------------------------
>
>                 Key: WW-4301
>                 URL: https://issues.apache.org/jira/browse/WW-4301
>             Project: Struts 2
>          Issue Type: Bug
>          Components: Plugin - JSON
>    Affects Versions: 2.3.16
>            Reporter: Andrew Bernhagen
>            Priority: Minor
>              Labels: json
>             Fix For: 2.3.x
>
>   Original Estimate: 24h
>  Remaining Estimate: 24h
>
> I found this issue when using server-side processing with JQuery Datatables and attempting to populate.  
> Say I have this getter/field on my action:
> public List<List<String>> getListOfLists() {
> 	return listOfLists;
> }
> My struts.xml is defined as follows:
> <action name="GetData" method="loadData"
> class="com.example.web.action.WebAction">
> 	<result type="json" >
> 		<param name="ignoreHierarchy">false</param>
> 		<param name="includeProperties">listOfLists\[\d+\]\[\d+\]</param>
> 	</result>
> </action>
> However, the include patterns that are constructed within JSONUtil are not accurate.  Instead of making the expected pattern that would work:
> listOfLists
> listOfLists\[\d+\]
> listOfLists\[\d+\]\[\d+\]
> Only the following are created:
> listOfLists\[\d+\]
> listOfLists\[\d+\]\[\d+\]
> Because the first "listOfLists" is not created, the property is excluded in the results.
> This all happens because of line 463 in JSONUtil:
> addPattern(results, patternExpr.substring(0, patternExpr.lastIndexOf(includePatternData.get(ARRAY_BEGIN_STRING).get(type))), type);
> Since we're going at the last index of the ARRAY_BEGIN_STRING string, it's skipping the first index.  This could be updated to be smarter to build the include patterns as expected.



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