Mailing-List: contact issues-help@commons.apache.org; run by ezmlm
Precedence: bulk
Reply-To: issues@commons.apache.org
Date: Thu, 9 Mar 2017 07:20:38 +0000 (UTC)
From: "Dmitri Blinov (JIRA)" <jira@apache.org>
To: issues@commons.apache.org
Message-ID: <JIRA.13047949.1488532333000.19783.1489044038465@Atlassian.JIRA>
In-Reply-To: <JIRA.13047949.1488532333000@Atlassian.JIRA>
References: <JIRA.13047949.1488532333000@Atlassian.JIRA> <JIRA.13047949.1488532333079@jira-lw-us.apache.org>
Subject: [jira] [Commented] (JEXL-221) Sporadic undefined property error
 caused by NPE at MapGetExecutor.tryInvoke()
MIME-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 7bit
archived-at: Thu, 09 Mar 2017 07:20:45 -0000


    [ https://issues.apache.org/jira/browse/JEXL-221?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15902603#comment-15902603 ] 

Dmitri Blinov commented on JEXL-221:
------------------------------------

Do you think we could also cross-check other Get|SetExecutors for similar bugs?

> Sporadic undefined property error caused by NPE at MapGetExecutor.tryInvoke()
> -----------------------------------------------------------------------------
>
>                 Key: JEXL-221
>                 URL: https://issues.apache.org/jira/browse/JEXL-221
>             Project: Commons JEXL
>          Issue Type: Bug
>    Affects Versions: 3.0
>            Reporter: Dmitri Blinov
>            Assignee: Henri Biestro
>
> I'm getting sporadic undefined property error when accessing hashmap by a key. The stack trace tells the cause is NPE in MapGetExecutor.tryInvoke() at the following line:
> {code}
>         if (obj != null && method != null
>                 && objectClass.equals(obj.getClass())
>                 && (key == null || property.getClass().equals(key.getClass()))) {
> {code}
> I have managed to overcome this issue by adding the following null check:
> {code}
>         if (obj != null && method != null
>                 && objectClass.equals(obj.getClass())
>                 && (key == null || property != null && property.getClass().equals(key.getClass()))) {
> {code}
> I have only vague understanding of how things work inside jexl with tryInvoke() and unfortunately can not provide any test case for this, but it has worked in my case, so if nobody have any objections please include the fix in source tree.
> Thanks!


--
This message was sent by Atlassian JIRA
(v6.3.15#6346)