[jira] [Updated] (LANG-1283) RecursiveToStringStyle does not handle nested Maps correctly

["Dominik Stadler (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/LANG-1283?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Dominik Stadler updated LANG-1283:
----------------------------------
    Attachment: RecursiveToStringTest.java

> RecursiveToStringStyle does not handle nested Maps correctly
> ------------------------------------------------------------
>
>                 Key: LANG-1283
>                 URL: https://issues.apache.org/jira/browse/LANG-1283
>             Project: Commons Lang
>          Issue Type: Bug
>          Components: lang.builder.*
>    Affects Versions: 3.4
>            Reporter: Dominik Stadler
>         Attachments: RecursiveToStringTest.java
>
>
> When using {{RecursiveToStringStyle}} to include all member fields of all nested objects, it works for simple Maps, but as soon as I have Maps as values inside another Map, the contents is not included any more, but only a Object.toString() seems to be appended for the objects instead.
> A possible fix would be to add  the following to RecursiveToStringStyle, although there might be a better way to fix this:
> {code}
>         @Override
>         protected void appendDetail(StringBuffer buffer, String fieldName, Map<?, ?> map) {
>             appendClassName(buffer, map);
>             appendIdentityHashCode(buffer, map);
>             appendDetail(buffer, fieldName, map.entrySet());
>         }
> {code}
> See the attached unit-test for a reproducer.
> Please also note that {{RecursiveToStringStyleTest}} in commons-lang seems to mostly work on the DefaultStyle instead, see https://github.com/apache/commons-lang/blob/master/src/test/java/org/apache/commons/lang3/builder/RecursiveToStringStyleTest.java#L38, only one method, {{testPerson()}}, seems to actually do a real test here!



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