TopicLoad.java

 

This class is a JMS application that is a publish/subscribe version of the Load2 queue loader described in Load2.java. It publishes the required number of messages under the given topic, then terminates. Each message contains a user property called value, which takes a randomly selected integer value between 0 and 100.

To use this application, ensure that the broker is running and that the required setup is complete. For details, see Additional setup for publish/subscribe mode.

This application has two versions of the command line syntax.

For use with JNDI, the syntax is:

java -Djava.library.path=library_path
     TopicLoad [-icf jndiICF] [-url jndiURL] [-tcfLookup tcfLookup]
               [-tLookup tLookup] [-sleep sleepTime] [-msgs numMsgs]

where library_path is the path to the WebSphere MQ Java libraries (see The WebSphere MQ Java libraries).

For use without JNDI, the syntax is:

java -Djava.library.path=library_path
     TopicLoad -nojndi [-qmgr qMgrName] [-t tName]
                       [-sleep sleepTime] [-msgs numMsgs]

Table 1 describes the parameters and gives their defaults.

TopicLoad parameters and defaults

Parameter	Meaning	Default
jndiICF	Initial context factory class used for JNDI	com.sun.jndi.ldap.LdapCtxFactory
jndiURL	Provider URL used for JNDI	ldap://localhost/o=ibm,c=us
tcfLookup	JNDI lookup key used for TopicConnectionFactory	cn=tcf
tLookup	JNDI lookup key used for Topic	cn=t
qMgrName	Name of queue manager to connect to, and broker queue manager to publish messages to	"" (use the default queue manager)
tName	Name of topic to publish to	MQJMS/ASF/TopicLoad
sleepTime	Time (in milliseconds) to pause between message puts	0 (no pause)
numMsgs	Number of messages to put	200

If there are any errors, an error message is displayed and the application terminates.

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