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| Java Compute node vs calling Java module in ESQL code |
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| geethgubi |
 Posted: Tue Feb 09, 2010 6:52 am Post subject: Java Compute node vs calling Java module in ESQL code |
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Apprentice
Joined: 18 Dec 2008
Posts: 44
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| We are rewriting an application for performance improvements. For some of the reasons we need to write the code in java. I recommended calling the java module (only for the part which has to be in java (JDBC calls)) from the esql code. But I read in one of the google article that instead of calling the java module from the esql, we can go ahead and use java compute node. I am confused on what are the pros and cons that both of these are going to bring in. Can someone help me by listing out or directing me to some article which explains these? |
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| zpat |
| Posted: Tue Feb 09, 2010 7:14 am Post subject: |
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Jedi Council
Joined: 19 May 2001
Posts: 5866
Location: UK
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Don't use native Java in WMB, use only the Java compute nodes.
WMB has all the database access capability you need builtin.
Too many developers are seeing the word "Java" and assuming they have to code their own logic. WMB is not WAS.
The entire point of WMB is NOT to do that sort of coding. Use the greater productivity and reliability of using the WMB builtin features.
Using Java trained developers to work with WMB (presumably without being trained on WMB) is likely to lead to the wrong use of WMB.
The choice of ESQL or Java won't lead to performance improvements, the correct use of WMB features and general design principles matter, not the compute node language. |
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| ovasquez |
| Posted: Thu Feb 11, 2010 4:11 pm Post subject: |
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Centurion
Joined: 09 Dec 2005
Posts: 141
Location: Lima, Peru
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| zpat wrote: |
Don't use native Java in WMB, use only the Java compute nodes.
WMB has all the database access capability you need builtin.
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WMB for z/OS, only access DB2 for z/OS..from ESQL...
For other database is necesary use JavaCompute node...
_________________
Oscar Vásquez Flores |
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