[jira] [Created] (WICKET-6400) Object with array property fails on NPE when construction JSON object

["David Rain (JIRA)" <ji...@apache.org>]

David Rain created WICKET-6400:
----------------------------------

             Summary: Object with array property fails on NPE when construction JSON object
                 Key: WICKET-6400
                 URL: https://issues.apache.org/jira/browse/WICKET-6400
             Project: Wicket
          Issue Type: Bug
          Components: wicket
    Affects Versions: 7.7.0
         Environment: Windows 8.1 64-bit, JDK8_121, Wicket 7.7.0, Jetty 9 / WebSphere 9
            Reporter: David Rain


If we have an Object (POJO) that includes array(s), it fails on java.lang.NullPointerException when I pass it as an argument to the JSONObject constructor.
The cause is that JSONArray cannot be included in tje JSONObject anymore because of absence of some readMethods (it fails on NPE at line 234 in JSONObject). I assume this is caused by switching to open-json.
Simpliest example:

{code:java}
    public static void main(final String[] args) {
        final JSONArray array = new JSONArray(new Object[] { 1, 2, 3 });
        new JSONObject(array);
    }
{code}

fails on:

{noformat}
Exception in thread "main" java.lang.NullPointerException
	at org.apache.wicket.ajax.json.JSONObject.propertiesAsMap(JSONObject.java:234)
	at org.apache.wicket.ajax.json.JSONObject.<init>(JSONObject.java:225)
	at cz.kb.dcs.module_frontend_base.components.graph.renderer.GraphRendererJSONUtils.main(GraphRendererJSONUtils.java:53)
{noformat}




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