Steve Carlin has posted comments on this change. ( 
http://gerrit.cloudera.org:8080/21335 )

Change subject: IMPALA-13022: Added infrastructure for implicit casting of 
functions
......................................................................


Patch Set 18:

(3 comments)

http://gerrit.cloudera.org:8080/#/c/21335/16/java/calcite-planner/src/main/java/org/apache/impala/calcite/coercenodes/CoerceNodes.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/coercenodes/CoerceNodes.java:

http://gerrit.cloudera.org:8080/#/c/21335/16/java/calcite-planner/src/main/java/org/apache/impala/calcite/coercenodes/CoerceNodes.java@209
PS16, Line 209:    * Instead, a Project RelNode is placed as an input to the 
Aggregate RelNode. The
> I don't see any changes uploaded here.
Heh, I know I made the change because I explicitly remember i had to reformat 
multiple lines due to line length!

Oh well...should be there now.


http://gerrit.cloudera.org:8080/#/c/21335/16/java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/FunctionResolver.java
File 
java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/FunctionResolver.java:

http://gerrit.cloudera.org:8080/#/c/21335/16/java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/FunctionResolver.java@72
PS16, Line 72:       .add(SqlKind.PLUS)
> Can you add a comment explaining that?
Done


http://gerrit.cloudera.org:8080/#/c/21335/16/java/calcite-planner/src/main/java/org/apache/impala/calcite/functions/FunctionResolver.java@90
PS16, Line 90:     return getFunction(call.getOperator().getName(), 
call.getKind(), argTypes, false);
> I meant adding
Ok, I think I see what you're saying now.

Well...perhaps I just made it worse in your opinion, but I like your idea with 
the shorter signatures? Tell me what you think of what I did...

I got rid of the "exactMatch" parameter because I can easily see a caller 
screwing that up.  Instead, I made the name explicit.  But since the name 
"getFunction" is a big generic, I created getExactFunction and 
getSupertypeFunction. This way, the caller knows exactly what they are calling.

The public get*Function calls are now wrappers around the internals, which all 
use private getFunction calls.

What do you think?  I'm still willing to change it to a different way.



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Gerrit-Project: Impala-ASF
Gerrit-Branch: master
Gerrit-MessageType: comment
Gerrit-Change-Id: I13a349673f185463276ad7ddb83f0cfc2d73218c
Gerrit-Change-Number: 21335
Gerrit-PatchSet: 18
Gerrit-Owner: Steve Carlin <[email protected]>
Gerrit-Reviewer: Aman Sinha <[email protected]>
Gerrit-Reviewer: Impala Public Jenkins <[email protected]>
Gerrit-Reviewer: Joe McDonnell <[email protected]>
Gerrit-Reviewer: Michael Smith <[email protected]>
Gerrit-Reviewer: Steve Carlin <[email protected]>
Gerrit-Comment-Date: Fri, 13 Sep 2024 14:59:53 +0000
Gerrit-HasComments: Yes

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