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MQSeries.net Forum Index » IBM MQ API Support » MQ series beginner programmers question

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santony
PostPosted: Fri Oct 24, 2003 3:04 pm    Post subject: MQ series beginner programmers question Reply with quote

Newbie

Joined: 24 Oct 2003
Posts: 1

I am expected to jump in the middle of an MQ series based project and become productive with the minimal amount of time. I have a fairly good JMS background ( web logic )
Thought I have tons of manuals, I frequently find myself to be bogged down by acronyms and vague descriptions ( some times too technical details too ).
I have these following set of miscellaneous questions. I will greatly appreciate, if anybody will answer at least some of these.

1.I see that there are a set of different choices when it comes to choosing the APIs. Starting from the low level C based one, C++, Java etc. How is one supposed to make a choice on the language. Is it purely based on ones comfort level with the language. Are there any inherent limitations/advantages with these different languages. ( Like using JMS one cannot implement security exits, as security exit is an IBM MQ series specific feature. )
2.What is the difference between MQAI and MQI.
3.I also saw a set of APIs in C++ & Java that seemed to be doing the same functionality of MQAI APIs
4.What is PCF. Is this the general command structure for administering MQ objects. Is MQAI an implementation of PCF. ( Does MQAI talk in terms of PCF internally )
5.We have a need to authenticate a user when he tries to connect to our MQ server. To solve this I should use security exits right ? If yes is there a sample code available for security exit for Java.
6.We have a MQ server running in our machine. For clients to connect from remote machines directly to us, is there a need for a listener to run on a well published port on our machine.
7.In general in Java when I instantiate an MQQueueManager object, with just the name of the qmanager, how does it know which TCP port to use.

Thanks a lot for reading. Even partial answers will be greatly appreciated.
Thanks again
--sony
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bower5932
PostPosted: Tue Oct 28, 2003 10:10 am    Post subject: Reply with quote

Jedi Knight

Joined: 27 Aug 2001
Posts: 3023
Location: Dallas, TX, USA

1. Your choice of language depends on what you know (like) the best and what your project has already decided upon.
2. MQAI is the administrative interface. You use it to make administrative kinds of calls into the queue manager. MQI is the API that you use to put/get messages into the queue manager.
3. It is rather common to find similar language versions for the MQI, MQAI so that you can work with what you know best.
4. PCFs are programmable command formats. You build PCF structures that you pass to the queue manager so that you can do administration. A lot of people found PCFs hard to use so MQ created the MQAI which is supposed to be simpler.
5. I'm not sure where to get a sample security exit.
6. You'll have to have a listener running so that your clients can get in.
7. You have to tell it what port the qmgr is using. If you don't specify one, 1414 is assumed.
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