[jira] [Closed] (WW-4246) Struts 2 JSON interceptor for Custom Maps

["Lukasz Lenart (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WW-4246?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Lukasz Lenart closed WW-4246.
-----------------------------

    Resolution: Not A Problem
      Assignee: Lukasz Lenart

Please ask such questions on Struts Users Mailing List <us...@struts.apache.org>

> Struts 2 JSON interceptor for Custom Maps
> -----------------------------------------
>
>                 Key: WW-4246
>                 URL: https://issues.apache.org/jira/browse/WW-4246
>             Project: Struts 2
>          Issue Type: Improvement
>          Components: Plugin - JSON
>    Affects Versions: 2.2.3.1
>            Reporter: hemantvsn
>            Assignee: Lukasz Lenart
>            Priority: Critical
>
> I have following POJO's
> {code:java}
> public class Category {
>     private Integer id;
>     private String title;
>     private String description;
>     //many more attributes below
> }
> public class User {
>         private Integer id;
>         private String name;
>         private String address;
>            //many more attributes below
>     }
> public class MyAction extends ActionSupport {
>        //list of objects
>     List<Category> categories;
>        //Complex Map
>     private Map<Category, List<User>> categorizedUsers;
>        //getters and setters
>     @Override
>     public String execute() {
>         //populate "categories" and "categorizedUsers" with some business logic
>         return SUCCESS;  
>     }
> }
> {code}
> I make an AJAX call for this action and expect the data (ie "categories" and "categorizedUsers") in JSON format. Struts2 provides us with JSON interceptor where I can specifically filter the parameters to be serailized.
> Following is configuration in struts xml file
> {code:xml}
>      <action name="mywidget" class="com.struts.action.MyAction">
>                  <result type="json">
>                     <param name="includeProperties">
>  ^categories\[\d+\]\.id, 
>  ^categories\[\d+\]\.title,
>                     </param>
>                 </result>
>             </action>
> {code}
> Both the POJOS contain a lot of attributes, but with "includeproperties", I was able to filter out id and title for each Category in the LIST.
> However for the map key as well as value, Im unable to apply any such regex pattern to filter out desired attributes. (Lets say for the map key (Category), I need id and title, whereas for each Value (User), I need to filter out id, name only). Please suggest appropriate regex pattern to be applied on the Map<Category, List<User>>.



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