Ok i think i figured it out. Spring has a ton load of configuration options.
One of the configurations allows for caching the consumer ... hence reducing
the overhead of creating connections etc.
| <bean id="URIlistener"
class="org.springframework.jms.listener.DefaultMessageListenerContainer"
lazy-init="false" >
| <property name="concurrentConsumers"
value="${medium.messaging.urimessaging.listener_count}" />
| <property name="connectionFactory" ref="ConnectionFactory" />
| <property name="destination" ref="ResolvedURIQueue" />
| <property name="messageListener" ref="uriEventMessageListener" />
| <property name="cacheLevel">
<util:constant
static-field="org.springframework.jms.listener.DefaultMessageListenerContainer.CACHE_CONSUMER"/>
| </property>
| <property name="recoveryInterval" value="100000"/>
| </bean>
|
| <bean id="uriEventMessageListener"
class="org.springframework.jms.listener.adapter.MessageListenerAdapter"
lazy-init="false">
| <property name="delegate">
| <ref bean="uriEventListener"/>
| </property>
| <property name="messageConverter">
| <null/>
| </property>
| </bean>
|
the property 'cacheLevel' being set to 'CACHE_CONSUMER' solves this 'too many
open files issue'
If not specified the default is 'CACHE_NONE'... and this appears to cause the
error
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