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Scala Interpreter classloader - getResources() returns empty collection. #8843

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scabug opened this Issue Sep 12, 2014 · 3 comments

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scabug commented Sep 12, 2014

Interpreter's classloader returns empty enumeration when requested using getResources (same code executed as application returns single entry)

  import collection.JavaConverters._
  class MyClass
  val cl = classOf[MyClass].getClassLoader
  val resName = classOf[MyClass].getName.replace(".","/")+".class"

  println(s"getResource: ${cl.getResource(resName)}")
  println(s"getResourceAsStream: ${cl.getResourceAsStream(resName)}")
  println(s"getResources: ${cl.getResources(resName).asScala.mkString}")
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scabug commented Sep 12, 2014

Imported From: https://issues.scala-lang.org/browse/SI-8843?orig=1
Reporter: Marcin Kielar (zorba128)
Affected Versions: 2.11.2
See #6026

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scabug commented Sep 12, 2014

@som-snytt said:
For those who can't remember which java "replace" method takes a regex:

scala> class X
defined class X

scala> classOf[X].getClassLoader getResource classOf[X].getName.replace(".","/")+".class"
res0: java.net.URL = repldir:(memory)/X.class

scala> classOf[X].getClassLoader getResources classOf[X].getName.replace(".","/")+".class"
res1: java.util.Enumeration[java.net.URL] = sun.misc.CompoundEnumeration@73a8dfcc

scala> .hasMoreElements
res2: Boolean = false
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scabug commented Oct 5, 2014

@scabug scabug closed this Oct 7, 2014

@scabug scabug added the repl label Apr 7, 2017

@scabug scabug added this to the 2.11.3 milestone Apr 7, 2017

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