[jira] [Closed] (GROOVY-10756) STC: parameterized and bounded return value for java class property

["Paul King (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/GROOVY-10756?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Paul King closed GROOVY-10756.
------------------------------

> STC: parameterized and bounded return value for java class property
> -------------------------------------------------------------------
>
>                 Key: GROOVY-10756
>                 URL: https://issues.apache.org/jira/browse/GROOVY-10756
>             Project: Groovy
>          Issue Type: Bug
>          Components: Static Type Checker
>    Affects Versions: 3.0.11, 2.5.18, 4.0.4
>            Reporter: J. Brébec
>            Assignee: Eric Milles
>            Priority: Major
>             Fix For: 2.5.19, 3.0.13, 4.0.6
>
>
> Given:
>  * A Java class having a method returning a generic Collection,
>  * A groovy script compiled with "CompileStatic" and using the method of the JavaClass
> Then the type of the element of the collection is not correctly inferred.
> Example:
> {code}
> public class Bridge { // java
>     
>     public <T extends File> Collection<T> getFiles() {
>         return null;
>     }
> }
> {code}
>  and the following script:
> {code}
> @groovy.transform.CompileStatic
> def cst() {
>     new Bridge().files.collect { it.name }
> }
> {code}
> the compilation fails with the error:
> {code}
> [Static type checking] - No such property: name for class: java.lang.Object
> {code}
> Note:
> - It works in v3.0.10 but not in v3.0.11
> - It works if the class is defined in the groovy script
> - A repro is available here: https://github.com/j3rem1e/groovy-bug-generic ({{>mvn test}})



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