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Date: Mon, 22 Aug 2016 15:31:20 +0000 (UTC)
From: "Dario Bertini (JIRA)" <jira@apache.org>
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Subject: [jira] [Created] (GROOVY-7914) Comparison operator does not
 delegate to .equals() for null
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archived-at: Mon, 22 Aug 2016 15:31:22 -0000

Dario Bertini created GROOVY-7914:
-------------------------------------

             Summary: Comparison operator does not delegate to .equals() for null
                 Key: GROOVY-7914
                 URL: https://issues.apache.org/jira/browse/GROOVY-7914
             Project: Groovy
          Issue Type: Bug
            Reporter: Dario Bertini


This might be related to https://issues.apache.org/jira/browse/GROOVY-4526
supposedly a PR over there has been merged, but the bug is still flagged as open (and indeed, I can locally reproduce it).

This one instead caused problems when handling org.json.JSONObject

That type uses its own internal JSONObject.Null class to represent null inside json (which is useful to distinguish between keys being missing, and values explicitly being set to null)

it overrides .equals(other) to check if the other object is null, but that method is never invoked

basically:

JSONObject.NULL == null
false
JSONObject.NULL.equals(null)
true


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