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Date: Tue, 10 Jun 2008 02:21:00 -0700 (PDT)
From: "Mario Lukica (JIRA)" <jira@apache.org>
To: dev@activemq.apache.org
Subject: [jira] Commented: (AMQ-1508) Using a destinationDotFilePlugin
 results in an ArrayStoreException
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    [ https://issues.apache.org/activemq/browse/AMQ-1508?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=43367#action_43367 ] 

Mario Lukica commented on AMQ-1508:
-----------------------------------

Version 4.1.2 is also affected.

> Using a destinationDotFilePlugin results in an ArrayStoreException
> ------------------------------------------------------------------
>
>                 Key: AMQ-1508
>                 URL: https://issues.apache.org/activemq/browse/AMQ-1508
>             Project: ActiveMQ
>          Issue Type: Bug
>          Components: Broker
>    Affects Versions: 4.1.1
>         Environment: Windows
> ActiveMQ 4.1.1
>            Reporter: Peter Mortier
>            Assignee: Rob Davies
>            Priority: Minor
>         Attachments: activemq.xml
>
>   Original Estimate: 5 minutes
>  Remaining Estimate: 5 minutes
>
> When you add a destinationDotFilePlugin to the activemq configuration, like this:
>   <broker>
> 	<plugins>
> 	   <destinationDotFilePlugin/>
> 	</plugins>
>        ...
>   </broker>
> The Broker refuses to start up and crashes with ArrayStoreException:
> ERROR BrokerService                  - Failed to start ActiveMQ JMS Message Broker. Reason: java.lang.ArrayStoreExceptio
> n
> java.lang.ArrayStoreException
>         at java.lang.System.arraycopy(Native Method)
>         at java.util.ArrayList.toArray(ArrayList.java:304)
>         at org.apache.activemq.broker.region.RegionBroker.getDestinations(RegionBroker.java:315)
>         at org.apache.activemq.broker.BrokerFilter.getDestinations(BrokerFilter.java:149)
>         at org.apache.activemq.broker.BrokerFilter.getDestinations(BrokerFilter.java:149)
>         at org.apache.activemq.broker.BrokerFilter.getDestinations(BrokerFilter.java:149)
>         at org.apache.activemq.broker.BrokerFilter.getDestinations(BrokerFilter.java:149)
>         at org.apache.activemq.broker.view.DestinationDotFileInterceptor.generateFile(DestinationDotFileInterceptor.java:53)
>         at org.apache.activemq.broker.view.DotFileInterceptorSupport.generateFile(DotFileInterceptorSupport.java:48)
>         at org.apache.activemq.broker.view.DestinationDotFileInterceptor.addDestination(DestinationDotFileInterceptor.java:43)
>         at org.apache.activemq.broker.MutableBrokerFilter.addDestination(MutableBrokerFilter.java:151)
>         at org.apache.activemq.broker.BrokerService.startDestinations(BrokerService.java:1619)
>         at org.apache.activemq.broker.BrokerService.start(BrokerService.java:410)
>         at org.apache.activemq.xbean.XBeanBrokerService.afterPropertiesSet(XBeanBrokerService.java:46)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1201)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1171)
>         at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:425)
>         at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:251)
>         at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:156)
>         at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:248)
>         at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:160)
>         at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:287)
> The bug is in RegionBroker.getDestinations method:
>     public ActiveMQDestination[] getDestinations() throws Exception {
> 		ArrayList l;
> 		l = new ArrayList(destinations.values());
> 		ActiveMQDestination rc[] = new ActiveMQDestination[l.size()];
> 		l.toArray(rc);
> 		return rc;
> 	}
> The destinations property is Map where the keys are ActiveMQDestinations and the values are Destinations. Trying to convert a collection of Destinations to an array of ActiveMQConnections throws the aforementioned exception.
> The method should be changed to:
>     public ActiveMQDestination[] getDestinations() throws Exception {
> 		ArrayList l;
> 		l = new ArrayList(destinations.keySet());
> 		ActiveMQDestination rc[] = new ActiveMQDestination[l.size()];
> 		l.toArray(rc);
> 		return rc;
> 	}

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