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https://issues.apache.org/jira/browse/GROOVY-7379?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
]
Paul King updated GROOVY-7379:
------------------------------
Priority: Major (was: Critical)
> listeners.each { UDPListener -> ... fails with exception runtime on
> List<UDPListener> when used in an inner class.
> ------------------------------------------------------------------------------------------------------------------
>
> Key: GROOVY-7379
> URL: https://issues.apache.org/jira/browse/GROOVY-7379
> Project: Groovy
> Issue Type: Bug
> Components: Compiler, groovy-runtime
> Affects Versions: 2.3.6, 2.3.11
> Environment: Mac OS X 10.10.2, JDK 1.7.0_71
> Reporter: Tommy Svensson
>
> Exception in thread "Thread-1" java.lang.VerifyError: (class:
> se/natusoft/osgi/aps/tcpipsvc/UDPReceiver$_ReceiverThread_run_closure1,
> method: doCall signature:
> (Lse/natusoft/osgi/aps/api/net/tcpip/UDPListener;)Ljava/lang/Object;)
> Incompatible object argument for function call
> at
> se.natusoft.osgi.aps.tcpipsvc.UDPReceiver$ReceiverThread.run(UDPReceiver.groovy:219)
> Caused by the following code:
> {noformat}
> this.listeners.each { UDPListener listener ->
> try {
> listener.udpDataReceived(config.name, dp)
> }
> catch (Exception e) {
> getSafeLogger().error("Listener call failed for '" +
> config.name + "'! (" + listener + ")", e)
> }
> }
> {noformat}
> The above code block fails with the above exception when the class the code
> block is part of is an inner class. When the whole inner class is moved up
> into its own top level class, this works fine, and there is no exception.
> I've noticed this behavior before, there are several Groovy features that
> simply fails when they are part of an inner class, but works fine in a top
> level class.
> I guess that the lesson here is to avoid inner classes in Groovy for now at
> least.
> I really love Groovy as a language, it sovles a lot of the problem with Java.
> Unfortunately the stability and quality of Java releases and Grovvy releases
> are on separate sides of the universe. Due to this I don't dare reccomend to
> a customer to use Groovy until it has more stable and backwards compatible
> releases.
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