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| mahesh2069 |
 Posted: Fri Jun 28, 2013 9:25 am Post subject: Can change format of payload in JCN? |
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Centurion
Joined: 26 Jun 2013
Posts: 103
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Can We change format of input message in Java Compute Node.
Like if input is xml ,I need to change it to MRM.
How can I set MQMD properties like MessageSet ,and MessageType ,and Directly set message format?
Can I set these properties like compute node ..
Is it work in JCN? |
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| lancelotlinc |
| Posted: Fri Jun 28, 2013 9:28 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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You can use any transformation node you want to change a message from one format to the other. ESQL Compute transformation node is usually more efficient than a JCN to do this particular conversion.
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| mahesh2069 |
| Posted: Fri Jun 28, 2013 9:41 am Post subject: |
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Centurion
Joined: 26 Jun 2013
Posts: 103
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Hi lancelotlinc,
Yes , I can use Reset Content Descriptor,or in Compute node I can change properties ,I can achieve it.
But I have to work on Java Compute Node, for that transformation.
Just for back up,Is there any necessity to transform format in JCN..
How can I do it?
Please give idea to solve this issue? |
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| mqjeff |
| Posted: Fri Jun 28, 2013 10:02 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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ResetContentDescriptor does two things. One, it sets the necessary fields in the Properties tree to match the new format. Two, it creates a new logical message tree that has a parser attached that matches the new format.
Both of these things can be done in JavaCompute node per the explicit examples in the Info Center. |
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| lancelotlinc |
| Posted: Fri Jun 28, 2013 10:23 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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आप अन्य करने के लिए एक प्रारूप से एक संदेश बदलना चाहते हैं किसी भी परिवर्तन नोड का उपयोग कर सकते हैं. ESQL कंप्यूट परिवर्तन नोड आम तौर पर इस विशेष रूपांतरण करने के लिए एक JCN से अधिक कुशल है.
mqjeff कहा
ResetContentDescriptor दो बातें करता है. एक, यह नया प्रारूप मैच के लिए गुण पेड़ में आवश्यक फ़ील्ड्स सेट. दो, यह नया प्रारूप है कि मैच जुड़ी एक विश्लेषक है कि एक नई तार्किक संदेश पेड़ बनाता है.
इन दोनों चीजों की जानकारी केंद्र में स्पष्ट उदाहरण प्रति JavaCompute नोड में किया जा सकता है.
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| mqjeff |
| Posted: Fri Jun 28, 2013 11:55 am Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 17447
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| lancelotlinc wrote: |
| Gusto ba kamo nga sa pag-usab sa mga mensahe gikan sa usa ka format ngadto sa laing binurotan, hubag makagamit sa bisan unsa nga pagbag-o. Gikasal ESQL sa pagproseso sa pag-usab niining piho nga kalampusan mao ang kasagaran nga mas hapsay nga nga makabaton sa usa ka JCN. |
I'm not so sure that JCN is really more efficient. |
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| lancelotlinc |
| Posted: Fri Jun 28, 2013 11:59 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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Definitely lost in the translation there !
For clarity - ESQL is designed to be able to traverse the LMT (Logical Message Tree). Java is a general purpose language which can also traverse the LMT ; however, its a little more cumbersome to do so in Java.
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| rekarm01 |
| Posted: Fri Jun 28, 2013 2:19 pm Post subject: |
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Grand Master
Joined: 25 Jun 2008
Posts: 1415
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| lancelotlinc wrote: |
| Java ... can also traverse the LMT ; however, its a little more cumbersome ... |
Is it the reading/writing the source code that's more cumbersome, or is the actual execution less efficient for Java than for ESQL? If it's the latter, then how significant is the difference in performance? |
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| fjb_saper |
| Posted: Sun Jun 30, 2013 4:31 pm Post subject: |
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Grand High Poobah
Joined: 18 Nov 2003
Posts: 20756
Location: LI,NY
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| rekarm01 wrote: |
| lancelotlinc wrote: |
| Java ... can also traverse the LMT ; however, its a little more cumbersome ... |
Is it the reading/writing the source code that's more cumbersome, or is the actual execution less efficient for Java than for ESQL? If it's the latter, then how significant is the difference in performance? |
Unless you need to squeeze the last erg of performance out of the code, the difference between Java and ESQL is of little to no relevance.
What is more important is the way of writing your code.
Known pitfalls in Java are the way to write an XPATH query and making sure you have a finally msg.clear().
Known pitfalls in ESQL are using to few references and indexes in loops.
Have fun 
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| vishnurajnr |
| Posted: Mon Jul 01, 2013 1:14 am Post subject: |
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Joined: 08 Aug 2011
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| lancelotlinc |
| Posted: Mon Jul 01, 2013 3:47 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| rekarm01 wrote: |
| lancelotlinc wrote: |
| Java ... can also traverse the LMT ; however, its a little more cumbersome ... |
Is it the reading/writing the source code that's more cumbersome, or is the actual execution less efficient for Java than for ESQL? If it's the latter, then how significant is the difference in performance? |
The performance suffers slightly in V7 (the last time I measured it) due to the XPath query operations. The difference is so slight, its not a big deal.
When I refer to efficiency in this context, I'm speaking about the ease of reference through the code by the developers.
For example, InputRoot.SOAP.Body.mynamespace:SomeFieldReference is a very easy construct to code, with variations repetitively modeled very quickly. No muss, no fuss.
ESQL is a purpose-built language for just that: quickly and easily referring to the LMT. Java is general purpose, and works very well.
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| lancelotlinc |
| Posted: Mon Jul 01, 2013 3:49 am Post subject: |
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Jedi Knight
Joined: 22 Mar 2010
Posts: 4941
Location: Bloomington, IL USA
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| vishnurajnr wrote: |
| http://publib.boulder.ibm.com/infocenter/wmbhelp/v8r0m0/index.jsp?topic=%2Fcom.ibm.etools.mft.doc%2Fac20805_.htm |
Whats the point of this post? I don't get your meaning?
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