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From "Suchitha Koneru \(sukoneru\)" <sukon...@cisco.com>
Subject RE: active mq configuration for Tomcat 5.5
Date Fri, 19 Jan 2007 22:17:06 GMT
Thank  you so much for the help.
I am looking up the correct name because in the resource link of
context.xml I have 
Connection Factory mapped to global resource
"jms/TopicConnectionFactory". This global resource is mentioned in 
Server.xml.


 <ResourceLink name="ConnectionFactory"
> global="jms/TopicConnectionFactory" type= 
> "org.apache.activemq.ActiveMQConnectionFactory" />

The object at run time is 
Of the type 
org.apache.activemq.ActiveMQConnectionFactory.

Using JNDI , I am able to look up the connection factory and the topic.

The problem is  with the type of object being returned, even though it
is of type 

org.apache.activemq.ActiveMQConnectionFactory , I cannot cast it to the
same type i.e. org.apache.activemq.ActiveMQConnectionFactory

This problem appears to be very tricky.


-----Original Message-----
From: James Strachan [mailto:james.strachan@gmail.com] 
Sent: Friday, January 19, 2007 1:10 AM
To: activemq-users@geronimo.apache.org
Subject: Re: active mq configuration for Tomcat 5.5

It looks like you are looking up the wrong name, shouldn't it be
"jms/TopicConnectionFactory"?
Also try actually printing out what the object is that you've found.

Given the problems you're having using JNDI, it might be worth just
replacing all the JNDI crap with just one line...

ConnectionFactory factory = new ActiveMQConnection()

:)

On 1/19/07, Suchitha Koneru (sukoneru) <sukoneru@cisco.com> wrote:
> Hello active mq users ,
>                 I  have the following configuration on my system 
> tomcat 5.5 java 1.5.09
>
> In server.xml , I placed the JNDI resources as follows 
> <GlobalNamingResources>
>
> <Resource name="jms/TopicConnectionFactory"
>
> auth="Container"
>
> type="org.apache.activemq.ActiveMQConnectionFactory"
>
> description="JMS Connection Factory"
>
> factory="org.apache.activemq.jndi.JNDIReferenceFactory"
>
> brokerURL="tcp://localhost:61716"
>
> brokerName="LocalActiveMQBroker"/>
>
> <Resource name="jms/Topic"
>
> auth="Container"
>
> type="org.apache.activemq.command.ActiveMQTopic"
>
> description="sample Topic"
>
> factory="org.apache.activemq.jndi.JNDIReferenceFactory"
>
> physicalName="FOO.BAR"/>
>
> </GlobalNamingResources>
>
> I have a web app called UI , I am trying to access these  global jndi 
> recources from this web app, Hence the context.xml for this web app  
> has the following <Context reloadable="true">
>
> <ResourceLink name="ConnectionFactory"
> global="jms/TopicConnectionFactory" type= 
> "org.apache.activemq.ActiveMQConnectionFactory" />
>
> <ResourceLink name="PNMTopic" global="jms/Topic" type= 
> "org.apache.activemq.command.ActiveMQTopic" />
>
> </Context>
>
> The subsciber class in  the UI context is as follows
>
> public class PNMSubscriber {
>
> TopicConnection tConn ;
>
> TopicConnectionFactory tFactory ;
>
> Topic pnmTopic;
>
> ActiveMQTopicSession pnmSession ;
>
> public PNMSubscriber(){
>
> try{
>
> InitialContext initialContext = new InitialContext();
>
> Context envContext = (Context) initialContext.lookup("java:comp/env");
>
> tFactory =
> (TopicConnectionFactory)envContext.lookup("ConnectionFactory");
>
> tConn = tFactory.createTopicConnection();
>
> pnmSession = (ActiveMQTopicSession) tConn.createTopicSession(true, 
> Session.AUTO_ACKNOWLEDGE);
>
> pnmTopic = (Topic)envContext.lookup("PNMTopic");
>
> pnmSubscriber = pnmSession.createSubscriber(pnmTopic);
>
> }catch(Exception e){
>
> e.printStackTrace();
>
> }
>
> }
>
> I get a class cast exception as follows
>
> java.lang.ClassCastException:
> org.apache.activemq.ActiveMQConnectionFactory
>         at
> com.cpnm.common.messaging.PNMSubscriber.<init>(PNMSubscriber.java:40)
>
> The exception is raised , at the following line , in the code
>
> tFactory =
> (TopicConnectionFactory)envContext.lookup("ConnectionFactory");
>
> I tried casting the object to "ActiveMQConnectionFactory" , I still 
> get the same exception.
>
> I think, iam missing something in the configuration, please let me 
> know, if I need to add anything else.
>
> Please help me out !!
>
> thank you,
>
> Suchitha.
>
>
>
>
>
>
>


-- 

James
-------
http://radio.weblogs.com/0112098/

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