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skip duplicate entries in PluginClassLoader

This commit is contained in:
Mark Harrah 2013-02-01 13:10:26 -05:00
parent b2eb4661df
commit 52954b3ae7
1 changed files with 7 additions and 2 deletions
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9
main/src/main/scala/sbt/PluginManagement.scala
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@ -4,7 +4,7 @@ package sbt
import Def.Setting
import PluginManagement._
import java.net.{URL,URLClassLoader}
import java.net.{URI,URL,URLClassLoader}
final case class PluginManagement(overrides: Set[ModuleID], applyOverrides: Set[ModuleID], loader: PluginClassLoader, initialLoader: ClassLoader)
{
@ -33,6 +33,11 @@ object PluginManagement
ModuleID(m.organization, m.name, m.revision, crossVersion = m.crossVersion)
final class PluginClassLoader(p: ClassLoader) extends URLClassLoader(Array(), p) {
def add(urls: Seq[URL]): Unit = synchronized { urls foreach addURL }
private[this] val urlSet = new collection.mutable.HashSet[URI] // remember: don't use hashCode/equals on URL
def add(urls: Seq[URL]): Unit = synchronized {
for(url <- urls)
if(urlSet.add(url.toURI))
addURL(url)
}
}
}