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https://issues.apache.org/jira/browse/GROOVY-8044?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15821790#comment-15821790
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Jochen Theodorou commented on GROOVY-8044:
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it is not so easy to explain, it is an issue of the grammar.
"de.my.package.lib.myJavaFile theJavaFile = new de.my.package.lib.myJavaFile()"
is in Groovy a valid method call. It asks the property de, for a property my,
for a property package, for a propery lib for a method myJavaFile and executes
it with a variable of name theJavaFile, to which it did = new
de.my.package.lib.myJavaFile() before. And in this new-instance expression
Groovy knows it must be a class Your special case with assignment might be
solvable though if we disallow the assignment in a method call expression. So
maybe we can solve your issue by removing a rule in the grammar. Something like
"de.my.package.lib.myJavaFile theJavaFile" would stay problematic though.
> MissingPropertyException for java style local variables
> -------------------------------------------------------
>
> Key: GROOVY-8044
> URL: https://issues.apache.org/jira/browse/GROOVY-8044
> Project: Groovy
> Issue Type: Bug
> Components: groovy-runtime
> Affects Versions: 2.4.7
> Environment: KUbuntu16.10 but also present on Windows 7, Mac OS 10.9.5
> Reporter: MeFisto94
> Labels: newbie
>
> Hey Guys,
> First off: Sorry if this is a fault on my side but I highly doubt it.
> I am using Groovy to compile java and groovy files on the fly to use them as
> regular Class instances.
> I use my implementation of GroovyResourceLoader but I can confirm that it
> works, since if I break it purposely, Groovy complains about unknown class
> definitions during compile-time (of the script).
> So what happens is that I can successfully instantiate the freshly loaded
> class but as soon as I call a method which has a java style definition, it
> crashes during runtime.
> So a few examples:
> {code}
> @Override
> public URL loadGroovySource(String fileName) throws MalformedURLException
> {
> if (fileName.startsWith("de.my.packages")) {
> String className =
> fileName.substring("de.my.packages".length()).replace('.', '/');
>
> for (String extension : new String[] { ".java", ".groovy" }) {
> File classFile = new File(basicPath, className + extension);
> if (classFile.exists()) {
> System.out.println("FOUND " +
> classFile.getAbsolutePath());
> return classFile.toURI().toURL();
> }
> }
> }
>
> return null;
> }
> {code}
> Please ignore the fact that the variable names are misleading. Actually
> fileName should be className and className should be fileName...
> Now the code to get those Classes:
> {code}
> groovyClassLoader = new
> GroovyClassLoader(Thread.currentThread().getContextClassLoader());
> groovyClassLoader.setResourceLoader(new CustomGroovyResourceLoader(current));
> File f = new File(filePath);
> if (!f.exists()) {
> throw new FileNotFoundException(filePath);
> }
> return groovyClassLoader.parseClass(f);
> {code}
> The error now is:
> {code}
> No such property: de for class: de.my.package.script2
> Possible solutions: name
> groovy.lang.MissingPropertyException: No such property: de for class:
> de.my.package.script2
> Possible solutions: name
> at
> org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)
> at
> org.codehaus.groovy.runtime.callsite.GetEffectivePogoPropertySite.getProperty(GetEffectivePogoPropertySite.java:87)
> at
> org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGroovyObjectGetProperty(AbstractCallSite.java:307)
> at de.my.package.script2.getInterfaceVersion(script2.java:27)
> at java.lang.Thread.run(Thread.java:745)
> No such property: de for class: de.my.package.script2
> Possible solutions: name
> {code}
> Now my actual script file looks like this at that line:
> {code}
> de.my.package.lib.myJavaFile theJavaFile = new de.my.package.lib.myJavaFile();
> {code}
> This means that for some reason during runtime it quits after the . of de.
> Initially the code looked like this though:
> {code}
> myJavaFile theJavaFile = new myJavaFile();
> {code}
> This lead to the same Exception, I tried specifying the correct package
> manually to rule out some errors with the resolution (Groovy definately knows
> the myJavaFile class because parseClass would fail).
> Please note that my package isn't really "de.my.package", since package is a
> reserved keyword but I had to edit it out.
> What does work is "def theJavaFile = new myJavaFile();".
> What ALSO works is the java style definition for files available through the
> classpath (e.g. conventional code, anything from java.lang, ...)
> Am I probably missing some compilersettings to allow java compability?
> Thanks in Advance
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