[jira] [Commented] (CONFIGURATION-793) Error reading a list of complex objects from JSON after 2.3

["Cliff Evans (Jira)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/CONFIGURATION-793?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17208846#comment-17208846 ] 

Cliff Evans commented on CONFIGURATION-793:
-------------------------------------------

Unfortunately, coming up with a fix looks way too complex for the time I have available.  What I have been able to do though, is rework my original test to work with the test that [~oheger] added when the change that introduced the bug was done.  I wouldn't be sure whether the right place for the fix would be around org.apache.commons.configuration2.AbstractYAMLBasedConfiguration#constructHierarchy, or in the code that accessed the in memory copy of the configuration.  I hope that this might help zero in on the issue and lead someone more skilled than I to the correct fix for it.  I've updated the main description above with this information.

> Error reading a list of complex objects from JSON after 2.3
> -----------------------------------------------------------
>
>                 Key: CONFIGURATION-793
>                 URL: https://issues.apache.org/jira/browse/CONFIGURATION-793
>             Project: Commons Configuration
>          Issue Type: Bug
>    Affects Versions: 2.3
>         Environment: JDK 11.0.4
>            Reporter: Cliff Evans
>            Priority: Major
>
> We have just attempted to move from version 2.2 to 2.7 and have encountered and issue whilst attempting to read a List from a JSON formatted configuration file.
> The issue appears to have been introduced in 2.3.
> Adding the following tests to org.apache.commons.configuration2.TestJSONConfiguration will demonstrate the change.  These tests will pass against 2.2 but fail agains 2.3 (and 2.7.)
> https://issues.apache.org/jira/browse/CONFIGURATION-686 appears to have fixed access to lists of complex objects using the dot notation for strings (see testGetProperty_dictionaryInList() in TestJSONConfiguration) but has broken access to the list of complex objects.
>  
> {noformat}
> @Test
> public void testGetList_nested_with_list()
> {
>     assertEquals(Arrays.asList("col1", "col2"),
>                  jsonConfiguration.getList(String.class, "key4.key5"));
> }
> @Test
> public void testGetList() {
>     final List<Map> configList = jsonConfiguration.getList(Map.class, "capitals");
>     assertEquals(configList.size(), 2);
>     assertEquals(configList.get(0).get("country"), "USA");
>     assertEquals(configList.get(0).get("capital"), "Washington");
>     assertEquals(configList.get(1).get("country"), "UK");
>     assertEquals(configList.get(1).get("capital"), "London");
> }
> {noformat}
>  



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