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From Alessio Stalla <alessiosta...@gmail.com>
Subject Re: please help : GroovyCastException: why ?
Date Tue, 25 Feb 2020 10:16:29 GMT
If the user scripts are already existing, which version of Groovy were they
targeting? I've seen this behavior (of treating identifiers starting with
an uppercase letter as potential class names) for my entire life as a
Groovy developer, which started several years ago.

On Tue, 25 Feb 2020 at 10:19, Mickaël SALMON <ms@sylob.com> wrote:

> Unfortunatly yes, that's what I need to do, passing an Article instance
> into a variable named "Article", not "article" like it should be ...
> Because of existing user scripts which must continue to work without
> refactoring.
>
> How can I deal with it ?
> ------------------------------
> *From:* MG <mgbiz@arscreat.com>
> *Sent:* Monday, February 24, 2020 23:30
> *To:* users@groovy.apache.org <users@groovy.apache.org>; Mickaël SALMON <
> ms@sylob.com>
> *Subject:* Re: please help : GroovyCastException: why ?
>
> Article articleTmp = (Article) Article;
>
> in Groovy is the same as
>
> Article articleTmp = (Article) Article.getClass();
>
> in Java.
>
> Article.getClass()
>
> is of type Class<Article>, so casting it to Article will fail - what you
> want to do ist pass an Article instance, not the class, I presume...
>
> hth,
> mg
>
>
> On 24/02/2020 18:24, Mickaël SALMON wrote:
>
> Hello,
>
> I'm using last Groovy version (3.0.1) in my Java application to run user
> defined scripts (Java based).
> Here is how a script is executed (sorry for the formatting) :
>
>    public Object eval(String scriptName, String script, Map<String,
> Object> mapVariable)
>                    throws CochiseException {
>        groovy.lang.Script groovyScript = this.scriptCache.get(scriptName);
>        if (groovyScript == null) {
>            groovyScript = new GroovyShell().parse(script);
>            this.scriptCache.put(scriptName, groovyScript);
>        }
>        groovyScript.setBinding(new Binding(mapVariable));
>        return groovyScript.run();
>    }
>
> I have the following exception when I pass the object "Article" of class
> "com.sylob.cochise.dm1.ejb.entite.article.Article" in the Map of variables :
>
> org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast
> object 'interface com.sylob.cochise.dm1.ejb.entite.article.Article' with
> class 'java.lang.Class' to class
> 'com.sylob.cochise.dm1.ejb.entite.article.Article'
>
>
> Here is the script :
>
> import com.sylob.cochise.dm1.ejb.entite.article.Article;
>
> println "CL import Article : " +  Article.class.getClassLoader()
> println "CL var Article: " + Article.getClass().getClassLoader()
>
> Article articleTmp = (Article) Article;
> // ... some stuff
>
>
> This not seem to be a classLoader problem, because same class loader is
> used to load both com.sylob.cochise.dm1.ejb.entite.article.Article class
> in the script and "Article" object in the calling application.
> Also tested with 2.5.9, same error.
>
> What's wrong here ?
>
> Thanks.
>
>
>

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