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https://issues.apache.org/jira/browse/SLING-1877?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Michael Dürig updated SLING-1877:
---------------------------------
Attachment: SLING-1877.patch
Proposed patch
> Scala scripting: NPE when scripting engine is used standalone
> --------------------------------------------------------------
>
> Key: SLING-1877
> URL: https://issues.apache.org/jira/browse/SLING-1877
> Project: Sling
> Issue Type: Bug
> Components: Scripting
> Affects Versions: Scripting Scala 1.0.0
> Reporter: Michael Dürig
> Attachments: SLING-1877.patch
>
>
> When the Scala scripting engine is used stand alone (i.e. independently from
> Sling), the eval method causes a NPE:
> javax.script.ScriptException: Error executing script
> at
> org.apache.sling.scripting.scala.ScalaScriptEngine.eval(ScalaScriptEngine.scala:152)
> at javax.script.AbstractScriptEngine.eval(AbstractScriptEngine.java:247)
> at
> org.apache.sling.scripting.scala.ScalaScriptEngineTest.testScriptEngine(ScalaScriptEngineTest.scala:20)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at junit.framework.TestCase.runTest(TestCase.java:168)
> at junit.framework.TestCase.runBare(TestCase.java:134)
> at junit.framework.TestResult$1.protect(TestResult.java:110)
> at junit.framework.TestResult.runProtected(TestResult.java:128)
> at junit.framework.TestResult.run(TestResult.java:113)
> at junit.framework.TestCase.run(TestCase.java:124)
> at junit.framework.TestSuite.runTest(TestSuite.java:232)
> at junit.framework.TestSuite.run(TestSuite.java:227)
> at
> org.junit.internal.runners.JUnit38ClassRunner.run(JUnit38ClassRunner.java:83)
> at
> org.apache.maven.surefire.junit4.JUnit4TestSet.execute(JUnit4TestSet.java:62)
> at
> org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.executeTestSet(AbstractDirectoryTestSuite.java:140)
> at
> org.apache.maven.surefire.suite.AbstractDirectoryTestSuite.execute(AbstractDirectoryTestSuite.java:127)
> at org.apache.maven.surefire.Surefire.run(Surefire.java:177)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at
> sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at
> sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at
> org.apache.maven.surefire.booter.SurefireBooter.runSuitesInProcess(SurefireBooter.java:345)
> at
> org.apache.maven.surefire.booter.SurefireBooter.main(SurefireBooter.java:1009)
> Caused by: java.lang.NullPointerException
> at scala.collection.mutable.ArrayOps$ofRef.length(ArrayOps.scala:99)
> at scala.collection.SeqLike$class.size(SeqLike.scala:221)
> at scala.collection.mutable.ArrayOps.size(ArrayOps.scala:34)
> at scala.collection.mutable.Builder$class.sizeHint(Builder.scala:69)
> at scala.collection.mutable.ArrayBuilder.sizeHint(ArrayBuilder.scala:24)
> at scala.collection.TraversableLike$class.map(TraversableLike.scala:205)
> at scala.collection.mutable.ArrayOps.map(ArrayOps.scala:34)
> at
> org.apache.sling.scripting.scala.interpreter.ScalaCompiler.classPath(ScalaCompiler.scala:38)
> at
> org.apache.sling.scripting.scala.interpreter.ScalaCompiler.rootLoader(ScalaCompiler.scala:42)
> at
> scala.tools.nsc.symtab.Definitions$definitions$.RootClass(Definitions.scala:31)
> at
> scala.tools.nsc.symtab.Definitions$definitions$.EmptyPackage(Definitions.scala:33)
> at
> scala.tools.nsc.symtab.Definitions$definitions$.EmptyPackageClass(Definitions.scala:34)
> at
> scala.tools.nsc.symtab.Definitions$definitions$.init(Definitions.scala:780)
> at scala.tools.nsc.Global$Run.<init>(Global.scala:597)
> at
> org.apache.sling.scripting.scala.interpreter.ScalaInterpreter.compile(ScalaInterpreter.scala:126)
> at
> org.apache.sling.scripting.scala.interpreter.ScalaInterpreter.compile(ScalaInterpreter.scala:142)
> at
> org.apache.sling.scripting.scala.interpreter.ScalaInterpreter.compile(ScalaInterpreter.scala:152)
> at
> org.apache.sling.scripting.scala.ScalaScriptEngine$$anonfun$1.apply(ScalaScriptEngine.scala:113)
> at
> org.apache.sling.scripting.scala.ScalaScriptEngine$$anonfun$1.apply(ScalaScriptEngine.scala:113)
> at
> org.apache.sling.scripting.scala.ScalaScriptEngine.writeLocked(ScalaScriptEngine.scala:171)
> at
> org.apache.sling.scripting.scala.ScalaScriptEngine.eval(ScalaScriptEngine.scala:112)
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