Eclipse Community Forums: Kura » Classcast exception

Help

Home

Home » Eclipse Projects » Kura » Classcast exception

Show: Today's Messages :: Show Polls :: Message Navigator

Classcast exception [message #1749510]

Wed, 07 December 2016 14:58

Giuseppe Colosimo

Messages: 1
Registered: December 2016

Junior Member

Hi all,
in my bundle I'm using qpid libraries to establish an AMQP connection, but I have the following error:

java.lang.ClassCastException: org.apache.qpid.jms.JmsConnectionFactory cannot be cast to org.apache.qpid.jms.JmsConnectionFactory

The java code is:

        Properties props = new Properties();
        props.put(NAMING_FACTORY_INITIAL_KEY, NAMING_FACTORY_INITIAL_VALUE);
        props.put(FACTORY_LOOKUP_KEY, "amqps://" + host + ":" + port + "?amqp.idleTimeout=6000000");
        props.put(QUEUE_LOOKUP_KEY, "/devices/messages/events");

        Context context = new InitialContext(props);

        factory = (JmsConnectionFactory) context.lookup("myFactoryLookup");
        destination = (JmsQueue) context.lookup("myQueueLookup");
        String username = deviceId + deviceType + "@sas." + hostname;
        connection = factory.createConnection(username, token);
        System.out.println("Setted client");

It seems to me that the Kura classloader is loading two instances of the same jar. is it possible?
If is that the case, how can I avoid this situation?
In a stand alone version of the same code there are no errors at all.

Report message to a moderator

Re: Classcast exception [message #1749708 is a reply to message #1749510]

Fri, 09 December 2016 22:03

David Woodard

Messages: 420
Registered: July 2014

Senior Member

Hello,

How are you loading the qpid libraries? Are you adding them to the classpath of your bundle? Are you adding them via a separate bundle in the OSGi runtime? Also, providing your MANIFEST.MF file is often helpful.

Thanks,
--Dave

Report message to a moderator

Previous Topic:	kura log files
Next Topic:	unable to create new native thread as non-root user

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

]

Current Time: Fri Apr 26 21:51:21 GMT 2024

.:: Contact :: Home ::.

Breadcrumbs

Sign up to our Newsletter