| Re: [henshin-dev] Java Package import at Rule Level |
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Hi Christian, I also tried to load the ClassLoader of the util class, which does not make any differences. :/ If you want to reproduce the error, you could refactor/move the Util class in the javaimport example to another package. I also tried to load all classes of the Project using the eclipse project interfaces, but that won’t work either. The only way I got the import running was by using the legacy Rhino import (“importPackage(Packages.de.teampb)”). Greetings, Markus Von: henshin-dev-bounces@xxxxxxxxxxx [mailto:henshin-dev-bounces@xxxxxxxxxxx]
Im Auftrag von Christian Krause Hi Markus, can you try to pass the class loader of the class that you want to use as parameter of the DelegatingClassLoader? Cheers, Christian 2014-09-23 10:00 GMT+02:00 <mke@xxxxxxxxxx>: Hi Christian, thanks for the update on the issue. I tested the newest git pull and unfortunately the
example only works, if the Class to load is in the same subpackage as the rule itself. We obtain the same issue, if the Class to load is in a neighbor package (not sub to the
package where the rule is in). Greetings, i. A. Markus Klenke Praxistag bei der Diesel Technic AG am 09. Oktober in Kirchdorf TEAM auf der DOAG Konferenz + Ausstellung vom 18.-21. November in Nürnberg http://www.team-pb.de/veranstaltungen Von:
henshin-dev-bounces@xxxxxxxxxxx [mailto:henshin-dev-bounces@xxxxxxxxxxx]
Im Auftrag von Christian Krause
Hi Markus, the change with the example is still under review. When it is merged, you need some additional code in your application so that the script engine can find your classes. It looks
more or less like this: Thread thread = Thread.currentThread(); Engine engine = ... Cheers, Christian 2014-09-22 10:21 GMT+02:00 <mke@xxxxxxxxxx>: Hi Christian, unfortunately I get the same error results when using the latest nightly build of Henshin. When trying to import a class or package (“de.teampb.MyClass” or “de.teampb”) I get the following exception: java.lang.RuntimeException:
ReferenceError: "de" is not defined in <eval> at line number 1
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.evalAttributeExpression(EngineImpl.java:927)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChanges(EngineImpl.java:880)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChanges(EngineImpl.java:897)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChange(EngineImpl.java:782)
at org.eclipse.emf.henshin.interpreter.impl.RuleApplicationImpl.execute(RuleApplicationImpl.java:99)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeRule(UnitApplicationImpl.java:175)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:99)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at de.teampb.rma.transformator.jasper.concretize.ReportsConcretization.applyRule(ReportsConcretization.java:171)
at de.teampb.rma.transformator.jasper.concretize.ReportsConcretization.executeRuleSet(ReportsConcretization.java:101)
at de.teampb.rma.transformator.jasper.run.Transformator.main(Transformator.java:48) using the legacy-rhino-package import mechanism (“Packages.de.teampb”) leads to the error
I already posted:
java.lang.AssertionError: __noSuchProperty__ placeholder called
at jdk.nashorn.internal.objects.NativeJavaImporter.__noSuchProperty__(NativeJavaImporter.java:109)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:520)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:206)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:378)
at jdk.nashorn.internal.runtime.ScriptObject.invokeNoSuchProperty(ScriptObject.java:2064)
at jdk.nashorn.internal.runtime.ScriptObject.megamorphicGet(ScriptObject.java:1787)
at jdk.nashorn.internal.scripts.Script$\^eval\_.runScript(<eval>:1)
at jdk.nashorn.internal.runtime.ScriptFunctionData.invoke(ScriptFunctionData.java:498)
at jdk.nashorn.internal.runtime.ScriptFunction.invoke(ScriptFunction.java:206)
at jdk.nashorn.internal.runtime.ScriptRuntime.apply(ScriptRuntime.java:378)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:546)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:528)
at jdk.nashorn.api.scripting.NashornScriptEngine.evalImpl(NashornScriptEngine.java:524)
at jdk.nashorn.api.scripting.NashornScriptEngine.eval(NashornScriptEngine.java:194)
at javax.script.AbstractScriptEngine.eval(Unknown Source)
at org.eclipse.emf.henshin.interpreter.impl.ScriptEngineWrapper.eval(ScriptEngineWrapper.java:91)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.evalAttributeExpression(EngineImpl.java:923)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChanges(EngineImpl.java:880)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChanges(EngineImpl.java:897)
at org.eclipse.emf.henshin.interpreter.impl.EngineImpl.createChange(EngineImpl.java:782)
at org.eclipse.emf.henshin.interpreter.impl.RuleApplicationImpl.execute(RuleApplicationImpl.java:99)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeRule(UnitApplicationImpl.java:175)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:99)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.executeSequentialUnit(UnitApplicationImpl.java:222)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.doExecute(UnitApplicationImpl.java:103)
at org.eclipse.emf.henshin.interpreter.impl.UnitApplicationImpl.execute(UnitApplicationImpl.java:89)
at de.teampb.rma.transformator.jasper.concretize.ReportsConcretization.applyRule(ReportsConcretization.java:166)
at de.teampb.rma.transformator.jasper.concretize.ReportsConcretization.executeRuleSet(ReportsConcretization.java:101)
at de.teampb.rma.transformator.jasper.run.Transformator.main(Transformator.java:48) Just to make sure, I use the right global importing mechanism, I create the Engine by
calling new EngineImpl(new String[]{"de.teampb"}); Thanks for keeping active on this point and for all the effort coming with this! If I can help you with anything regarding this point or if I should do some investigation,
please let me know. Greetings, Markus Von:
henshin-dev-bounces@xxxxxxxxxxx [mailto:henshin-dev-bounces@xxxxxxxxxxx]
Im Auftrag von Christian Krause
Hi, I found a working solution. The trick is to create a class loader that can delegate to the Eclipse class loader and the current's thread class loader. It is not enough to just use
the Eclipse class loader because then for some reason the _javascript_ engine cannot be loaded. For convenience I added a minimal delegating class loader to the InterpreterUtil class. I wanted to avoid to mess around with the class loader inside the engine. There is also an
example and a test now. The change still needs to be reviewed: Cheers, 2014-09-15 21:58 GMT+02:00 Christian Krause <henshin.ck@xxxxxxxxx>: I found a similar issue and solution at GitHub: https://github.com/walterhiggins/ScriptCraft/pull/154 I had a quick try but in the first run I was not able to instantiate the script engine. Christian 2014-09-08 21:22 GMT+02:00 Christian Krause <henshin.ck@xxxxxxxxx>: A first analysis shows that the problem does not occur in stand-alone Java applications or when using a Java built-in method. When trying to run it in an Eclipse application (e.g.
plug-in JUnit tests), the error occurs. Also when I replace the JavaImporter by importPackage(), the problem still occurs. Maybe it is related to the classloader. Christian 2014-09-04 8:05 GMT+02:00 <mke@xxxxxxxxxx>:
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