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| UUID V4 generation using ESQL |
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| pandapritiranjan |
 Posted: Wed Sep 28, 2022 2:28 am Post subject: UUID V4 generation using ESQL |
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Joined: 28 Sep 2022
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I have a scenario where I need to generate UUID V4. I understand UUIDASCHAR function generates UUIDs using time, IP addr of integration node etc in Linux/Unix based systems.
UUID V4 are generated randomly. Does UUIDASCHAR generate UUID V4? Or everytime a UUID is generated I need to check if it conforms to the RFC 4122 specification to make sure that it is UUID V4? |
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| bruce2359 |
| Posted: Wed Sep 28, 2022 6:09 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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Why must the UUID be precisely at V4?
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Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| pandapritiranjan |
| Posted: Wed Sep 28, 2022 7:01 am Post subject: |
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Joined: 28 Sep 2022
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| The UUID must be V4 because that is a requirement of the underlying API that will be invoked by IIB. |
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| bruce2359 |
| Posted: Wed Sep 28, 2022 8:41 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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You can programmatically extract uuid data to determine version and other information. Search google for 'how to extract uuid version number in java' or similar.
_________________
I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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| pandapritiranjan |
| Posted: Wed Sep 28, 2022 11:13 am Post subject: |
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Just read my mind but I have a slightly different thought. I have thought of writing a function in Javacompute node by using the java.util.uuid package, and then invoke the java function from within the ESQL.
From what I have googled, java.util.uuid generates UUID V4 without any lengthy code. So, I will give it a try, and what you have said as well. See how it goes.
Thank you |
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| bruce2359 |
| Posted: Wed Sep 28, 2022 11:49 am Post subject: |
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Poobah
Joined: 05 Jan 2008
Posts: 9469
Location: US: west coast, almost. Otherwise, enroute.
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As you've probably discovered rfc 4122 covers a variety of versions 1,2,3,4,5,6, ...
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I like deadlines. I like to wave as they pass by.
ב''ה
Lex Orandi, Lex Credendi, Lex Vivendi. As we Worship, So we Believe, So we Live. |
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