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https://issues.apache.org/jira/browse/GROOVY-10612?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Daniel Sun closed GROOVY-10612.
-------------------------------
Resolution: Fixed
> Tweak plus operation for `Map` instance to align with Java
> ----------------------------------------------------------
>
> Key: GROOVY-10612
> URL: https://issues.apache.org/jira/browse/GROOVY-10612
> Project: Groovy
> Issue Type: Improvement
> Reporter: Daniel Sun
> Assignee: Daniel Sun
> Priority: Major
> Fix For: 5.0.0-alpha-1, 4.0.3
>
>
> The string concatenation for {{Map}} instance of Groovy is not aligned with
> Java, e.g. the following code can not work:
> {code:java}
> [a:1] + ' is a map'
> {code}
> Here are the error messages:
> {code:java}
> groovy.lang.MissingMethodException: No signature of method:
> java.util.LinkedHashMap.plus() is applicable for argument types: (String)
> values: [ is a map]
> Possible solutions: plus(java.util.Collection), plus(java.util.Map),
> values(), values(), values(), put(java.lang.Object, java.lang.Object)
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:72)
> at
> org.codehaus.groovy.vmplugin.v8.IndyGuardsFiltersAndSignatures.unwrap(IndyGuardsFiltersAndSignatures.java:172)
> at
> org.codehaus.groovy.vmplugin.v8.IndyInterface.fromCache(IndyInterface.java:318)
> at ConsoleScript2.run(ConsoleScript2:1)
> at
> groovy.lang.GroovyShell.runScriptOrMainOrTestOrRunnable(GroovyShell.java:268)
> at groovy.lang.GroovyShell.run(GroovyShell.java:374)
> at groovy.lang.GroovyShell.run(GroovyShell.java:353)
> at groovy.lang.GroovyShell.run(GroovyShell.java:179)
> at groovy.console.ui.Console$GroovySourceType.run(Console.groovy:1189)
> at groovy.console.ui.Console.doRun(Console.groovy:1421)
> at
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
> at java.base/java.lang.reflect.Method.invoke(Method.java:577)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:343)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:328)
> at
> org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:342)
> at
> org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:63)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:203)
> at
> groovy.console.ui.Console$_runScriptImpl_closure23.doCall(Console.groovy:1385)
> at
> groovy.console.ui.Console$_runScriptImpl_closure23.doCall(Console.groovy)
> at
> java.base/jdk.internal.reflect.DirectMethodHandleAccessor.invoke(DirectMethodHandleAccessor.java:104)
> at java.base/java.lang.reflect.Method.invoke(Method.java:577)
> at
> org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:343)
> at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:328)
> at
> org.codehaus.groovy.runtime.metaclass.ClosureMetaClass.invokeMethod(ClosureMetaClass.java:279)
> at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1009)
> at groovy.lang.Closure.call(Closure.java:418)
> at groovy.lang.Closure.call(Closure.java:412)
> at groovy.lang.Closure.run(Closure.java:500)
> at java.base/java.lang.Thread.run(Thread.java:833)
> {code}
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