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  1. Spring Framework
  2. SPR-15541

Leveraging kotlin-reflect to determine interface method parameters


    • Type: Improvement
    • Status: Closed
    • Priority: Minor
    • Resolution: Complete
    • Affects Version/s: None
    • Fix Version/s: 5.0 RC4
    • Component/s: None
    • Labels:
    • Last commented by a User:


      Following up from https://jira.spring.io/browse/DATAJPA-1118 :

      In web-mvc I can declare a method where the parameter name is automatically picked up:

      Unable to find source-code formatter for language: kotlin. Available languages are: actionscript, ada, applescript, bash, c, c#, c++, cpp, css, erlang, go, groovy, haskell, html, java, javascript, js, json, lua, none, nyan, objc, perl, php, python, r, rainbow, ruby, scala, sh, sql, swift, visualbasic, xml, yaml
      @GetMapping fun foo(@RequestParam bar: String): Any { ... }

      When I try to create a custom method with arguments in a spring-data-jpa repository interface it doesn't work with the following message:

      IllegalArgumentException: Name for parameter binding must not be null or empty! For named parameters you need to use @Param for query method parameters on Java versions < 8.

      It would be convenient If this also worked without having to specify @Param("name").

      I'm using Kotlin 1.1 on JDK8 with no special compilation options.


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              • Assignee:
                sdeleuze Sébastien Deleuze
                cleiter Christoph Leiter
                Last updater:
                Stéphane Nicoll
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                • Created:
                  Days since last comment:
                  40 weeks, 5 days ago