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MQSeries.net Forum IndexWebSphere Message Broker SupportSHARED Variable in ESQL for Integration Service (SOAP)

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mhasan23
PostPosted: Wed Apr 24, 2019 10:10 pm Post subject: SHARED Variable in ESQL for Integration Service (SOAP) Reply with quote

Novice

Joined: 12 Oct 2017
Posts: 14

Hello all,

I have created an integration service (SOAP based web service), all things are working fine. What I need to safe the hit on database every time when my web service API calls from application or mobile; so I am trying to store some database tables with long live variables for re-usability. So I tried "SHARED" variable concept in integration service project. But the variable is populated only for the single API cycle means when request received variable populated for entire flow cycle when response sends then variable will be null.

Is there any other way around or I am doing anything wrong with this "SHARED" variable.

Code:
DECLARE DB_RESPONSECODES SHARED ROW;


This is how i declared SHARED variable.
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Vitor
PostPosted: Thu Apr 25, 2019 4:50 am Post subject: Reply with quote

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Joined: 11 Nov 2005
Posts: 25608
Location: Ohio, USA

Without seeing the rest of your code, I would posit that the SHARED variable you're declaring is not in scope for the next iteration / API call.

You might want to consider using the global cache for this.
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mpong
PostPosted: Thu Apr 25, 2019 5:44 am Post subject: Reply with quote

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Joined: 22 Jan 2010
Posts: 155

Quote:
Is there any other way around or I am doing anything wrong with this "SHARED" variable.


You should be able to achieve this using Shared variable. Can you try something like this?

DECLARE CACHE_COUNT SHARED ROW NULL;

SET CACHE_COUNT .GroupName = InputRoot.DFDL.BulkRecordOutput.record.EmailGroup;
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mhasan23
PostPosted: Thu Apr 25, 2019 10:17 pm Post subject: Reply with quote

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Joined: 12 Oct 2017
Posts: 14

@Vitor Thanks a lot it works

Code:
DECLARE CACHE_COUNT SHARED ROW NULL;

SET CACHE_COUNT .GroupName = InputRoot.DFDL.BulkRecordOutput.record.EmailGroup;


This code is working. Thanks again
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mhasan23
PostPosted: Thu Apr 25, 2019 10:19 pm Post subject: Reply with quote

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Joined: 12 Oct 2017
Posts: 14

@mpong thanks alot
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timber
PostPosted: Thu Apr 25, 2019 11:40 pm Post subject: Reply with quote

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Joined: 25 Aug 2015
Posts: 960

One thing to be aware of: when using SHARED variables, you sometimes need an ATOMIC block around the updates to ensure that multiple message flow instances can safely use the same variable. Only required if additionalInstances > 0.
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