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Posted to users@tomcat.apache.org by John Fletcher <fl...@gmail.com> on 2011/05/20 14:22:26 UTC
How to dynamically create JNDI Context Resources
In my application I'm using a library which uses JNDI to locate JMS topics
and then operates with them.
I successfully configured JNDI references to the JMS topics like this in
Context.xml, and everything works nicely:
<Resource name="jms/flex/TopicConnectionFactory"
type="org.apache.activemq.ActiveMQConnectionFactory"
description="JMS Connection Factory"
factory="org.apache.activemq.jndi.JNDIReferenceFactory"
brokerURL="tcp://localhost:61616"
brokerName="activeMQBroker" />
<Resource name="jms/gds1"
type="org.apache.activemq.command.ActiveMQTopic"
description="Discussion topic for GraniteDS"
factory="org.apache.activemq.jndi.JNDIReferenceFactory"
physicalName="test.gds1"
/>
The challenge is that the JMS topics I want to make available to the library
depend on some runtime information, i.e. I want my application to create the
JMS topics dynamically. Is there a way that I can create these JNDI
resources at runtime from my application instead of having to hard-code them
into Context.xml? I'm able to upgrade to Tomcat 7 if necessary.
I found this, not sure if it could solve my problem?
http://tomcat.apache.org/tomcat-7.0-doc/jndi-resources-howto.html#Adding_Custom_Resource_Factories
.
I'm no expert on JNDI so if there is an altogether better solution to my
problem I'm open to it.
John
Re: How to dynamically create JNDI Context Resources
Posted by John Fletcher <fl...@gmail.com>.
Thanks... I thought the answer was along those lines but the library I'm
using was constraining me to use JNDI. However I now looked into their
source code and found a clean way around JNDI. Your answer got me motivated
in the right direction, thankyou.
John
2011/5/23 Mikolaj Rydzewski <mi...@ceti.pl>
> On Mon, 23 May 2011 10:34:28 +0200, John Fletcher wrote:
>
> The challenge is that the JMS topics I want to make available to the
>>> library depend on some runtime information, i.e. I want my application to
>>> create the JMS topics dynamically. Is there a way that I can create these
>>> JNDI resources at runtime from my application instead of having to
>>> hard-code
>>> them into Context.xml?
>>>
>>
> So why do you want to use JNDI still? You can call factory method yourself.
> Yes, this will tight you to specific JMS implementation. But do you plan to
> migrate to different JMS provider? With very little effort you can configure
> spring (is there anyone who does not use spring nowadays?) to hide direct
> factory calls.
>
> --
> Mikolaj Rydzewski <mi...@ceti.pl>
>
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>
Re: How to dynamically create JNDI Context Resources
Posted by Mikolaj Rydzewski <mi...@ceti.pl>.
On Mon, 23 May 2011 10:34:28 +0200, John Fletcher wrote:
>> The challenge is that the JMS topics I want to make available to the
>> library depend on some runtime information, i.e. I want my
>> application to
>> create the JMS topics dynamically. Is there a way that I can create
>> these
>> JNDI resources at runtime from my application instead of having to
>> hard-code
>> them into Context.xml?
So why do you want to use JNDI still? You can call factory method
yourself. Yes, this will tight you to specific JMS implementation. But
do you plan to migrate to different JMS provider? With very little
effort you can configure spring (is there anyone who does not use spring
nowadays?) to hide direct factory calls.
--
Mikolaj Rydzewski <mi...@ceti.pl>
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Re: How to dynamically create JNDI Context Resources
Posted by John Fletcher <fl...@gmail.com>.
Resending this as it didn't arrive in my inbox... sorry if you received it
already...
2011/5/20 John Fletcher
> In my application I'm using a library which uses JNDI to locate JMS topics
> and then operates with them.
>
> I successfully configured JNDI references to the JMS topics like this in
> Context.xml, and everything works nicely:
>
> <Resource name="jms/flex/TopicConnectionFactory"
> type="org.apache.activemq.ActiveMQConnectionFactory"
> description="JMS Connection Factory"
> factory="org.apache.activemq.jndi.JNDIReferenceFactory"
> brokerURL="tcp://localhost:61616"
> brokerName="activeMQBroker" />
>
> <Resource name="jms/gds1"
> type="org.apache.activemq.command.ActiveMQTopic"
> description="Discussion topic for GraniteDS"
> factory="org.apache.activemq.jndi.JNDIReferenceFactory"
> physicalName="test.gds1"
> />
>
> The challenge is that the JMS topics I want to make available to the
> library depend on some runtime information, i.e. I want my application to
> create the JMS topics dynamically. Is there a way that I can create these
> JNDI resources at runtime from my application instead of having to hard-code
> them into Context.xml? I'm able to upgrade to Tomcat 7 if necessary.
> I found this, not sure if it could solve my problem?
> http://tomcat.apache.org/tomcat-7.0-doc/jndi-resources-howto.html#Adding_Custom_Resource_Factories
> .
>
> I'm no expert on JNDI so if there is an altogether better solution to my
> problem I'm open to it.
>
> John
>