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https://issues.apache.org/jira/browse/GROOVY-8839?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16645139#comment-16645139
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Eric Milles edited comment on GROOVY-8839 at 10/10/18 3:20 PM:
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If {{ResultHandle}} is in the same package the error subsides. Also, it seems
important that {{ResultHandle}} is a Java source and not a Groovy one. I also
tried a binary reference like {{Pattern}} from {{java.util.regex}} and that
case did not have the error.
was (Author: emilles):
If {{ResultHandle}} is in the same package the error subsides. Also, it seems
important that {{ResultHandle}} is a Java source and not a Groovy one.
> Static compilation and array type parameter causing compile error
> -----------------------------------------------------------------
>
> Key: GROOVY-8839
> URL: https://issues.apache.org/jira/browse/GROOVY-8839
> Project: Groovy
> Issue Type: Bug
> Affects Versions: 2.4.15
> Reporter: Eric Milles
> Priority: Major
>
> This seems related to GROOVY-8342 (and possibly GROOVY-8638 and GROOVY-7985).
> When using an array in a generics parameter, I get static compilation errors
> for return of a map and also for assignment of return value to a variable.
> {code:java}
> package r;
> public class ResultHandle {}
> {code}
> {code:groovy}
> package p
> import groovy.transform.CompileStatic
> import r.ResultHandle
> @CompileStatic
> class Issue {
> protected Map<String, ResultHandle[]> getResultsByType() {
> Map<String, ResultHandle[]> resultsByType = [:]
> // populate resultsByType
> return resultsByType
> }
> }
> {code}
> When I build using Ant, I get the following error:
> {code}
> Buildfile: ...\Gr8\build.xml
> -init:
> -compile:
> [mkdir] Created dir: ...\Gr8\ant\JavaClasses
> [compile] Compiling 2 source files to ...\Gr8\ant\JavaClasses
> [compile] org.codehaus.groovy.control.MultipleCompilationErrorsException:
> startup failed:
> [compile] ...\Gr8\src\main\bugs\Groovy1234.groovy: 12: [Static type
> checking] - Incompatible generic argument types. Cannot assign
> java.util.LinkedHashMap <java.lang.String, [Lr.ResultHandle;> to:
> java.util.Map <String, ResultHandle[]>
> [compile] @ line 12, column 12.
> [compile] return resultsByType
> [compile] ^
> [compile] 1 error
> BUILD FAILED
> {code}
> Additionally, I would get an error if I assigned the result of the method to
> a typed variable, like this: {{Map<String, ResultHandle[]> resultsByType =
> getResultsByType()}}
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