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
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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