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From "Timothy Bish (JIRA)" <j...@apache.org>
Subject [jira] [Resolved] (AMQ-4035) Null pointer in class KahaDBStore programmed
Date Tue, 11 Sep 2012 03:30:08 GMT

     [ https://issues.apache.org/jira/browse/AMQ-4035?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]

Timothy Bish resolved AMQ-4035.
-------------------------------

       Resolution: Fixed
    Fix Version/s: 5.7.0
         Assignee: Timothy Bish

Added check for null before using the ack value.
                
> Null pointer in class KahaDBStore programmed
> --------------------------------------------
>
>                 Key: AMQ-4035
>                 URL: https://issues.apache.org/jira/browse/AMQ-4035
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Message Store
>         Environment: Windows 7, Active MQ 5.6.0
>            Reporter: Matthias Vetter
>            Assignee: Timothy Bish
>             Fix For: 5.7.0
>
>
> The method "protected void doAcknowledge(ConnectionContext context, String subscriptionKey,
MessageId messageId, MessageAck ack)" in KahaDBStore, line 705, contains a get-operation on
parameter "ack" in line 711:
> command.setTransactionInfo(transactionIdTransformer.transform(ack.getTransactionId()));
> Unfortunately, the method is called from inside with setting ack=null!
> (same class, method "run" of internal class StoreTopicTask, line 1268):
> this.topicStore.doAcknowledge(context, key, this.message.getMessageId(), null);
> Thus, a null pointer exception is guaranteed, whenever the run-method is called (which
is the case, for instance, when topic messages are synchronized in a network cluster).

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