[jira] [Resolved] (CALCITE-5703) Reduce amount of generated runtime code

["Feng Zhu (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CALCITE-5703?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Feng Zhu resolved CALCITE-5703.
-------------------------------
    Resolution: Fixed

> Reduce amount of generated runtime code
> ---------------------------------------
>
>                 Key: CALCITE-5703
>                 URL: https://issues.apache.org/jira/browse/CALCITE-5703
>             Project: Calcite
>          Issue Type: Improvement
>          Components: core
>    Affects Versions: 1.34.0
>            Reporter: Evgeny Stanilovsky
>            Assignee: Evgeny Stanilovsky
>            Priority: Major
>              Labels: patch-available, pull-request-available
>             Fix For: 1.35.0
>
>
> In some cases runtime generates code like :
> {noformat}
> return case_when_value == null ? (String) null : some_oparation();
> or
> return input_value == null ? (Long) null : Long.valueOf(...;
> {noformat}
> this redundant casting probably not harmful, but there is another side - maximum method size, this size jdk[1], janino [2] throws : *Code grows beyond 64 KB* . This PR reduces code generated by calcite runtime thus more huge expressions can be executed.
> [1] https://github.com/openjdk/jdk/blob/d22bcc813eea719b817d3d541a843594675c0ca9/src/jdk.compiler/share/classes/com/sun/tools/javac/jvm/ClassFile.java#L101
> [2] https://github.com/janino-compiler/janino/blob/e69022f5aaabd36edc08a2074360d62514493a19/janino/src/main/java/org/codehaus/janino/CodeContext.java#L699



--
This message was sent by Atlassian Jira
(v8.20.10#820010)