fix #63

pf4j/src/main/java/ro/fortsoft/pf4j/DefaultPluginManager.java

@@ -718,6 +718,13 @@ public class DefaultPluginManager implements PluginManager {
         return new DefaultExtensionFactory();
     }
 
+    /**
+     * Add the possibility to override the PluginClassLoader.
+     */
+    protected PluginClassLoader createPluginClassLoader(PluginDescriptor pluginDescriptor) {
+        return new PluginClassLoader(this, pluginDescriptor, getClass().getClassLoader());
+    }
+
     private void initialize() {
 		plugins = new HashMap<>();
         pluginClassLoaders = new HashMap<>();
@@ -765,13 +772,15 @@ public class DefaultPluginManager implements PluginManager {
 
         // load plugin
         log.debug("Loading plugin '{}'", pluginPath);
-        PluginLoader pluginLoader = new PluginLoader(this, pluginDescriptor, pluginDirectory, pluginClasspath);
+        PluginClassLoader pluginClassLoader = createPluginClassLoader(pluginDescriptor);
+        log.debug("Created class loader '{}'", pluginClassLoader);
+        PluginLoader pluginLoader = new PluginLoader(pluginDirectory, pluginClassLoader, pluginClasspath);
         pluginLoader.load();
         log.debug("Loaded plugin '{}'", pluginPath);
 
         // create the plugin wrapper
         log.debug("Creating wrapper for plugin '{}'", pluginPath);
-        PluginWrapper pluginWrapper = new PluginWrapper(pluginDescriptor, pluginPath, pluginLoader.getPluginClassLoader());
+        PluginWrapper pluginWrapper = new PluginWrapper(pluginDescriptor, pluginPath, pluginClassLoader);
         pluginWrapper.setPluginFactory(pluginFactory);
         pluginWrapper.setRuntimeMode(getRuntimeMode());
 
@@ -796,7 +805,6 @@ public class DefaultPluginManager implements PluginManager {
         unresolvedPlugins.add(pluginWrapper);
 
         // add plugin class loader to the list with class loaders
-        PluginClassLoader pluginClassLoader = pluginLoader.getPluginClassLoader();
         pluginClassLoaders.put(pluginId, pluginClassLoader);
 
         return pluginWrapper;

pf4j/src/main/java/ro/fortsoft/pf4j/PluginLoader.java

@@ -12,22 +12,20 @@
  */
 package ro.fortsoft.pf4j;
 
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+import ro.fortsoft.pf4j.util.DirectoryFileFilter;
+import ro.fortsoft.pf4j.util.JarFileFilter;
+
 import java.io.File;
 import java.io.FileFilter;
 import java.net.MalformedURLException;
 import java.util.List;
 import java.util.Vector;
 
-import org.slf4j.Logger;
-import org.slf4j.LoggerFactory;
-
-import ro.fortsoft.pf4j.util.DirectoryFileFilter;
-import ro.fortsoft.pf4j.util.JarFileFilter;
-
 /**
  * Load all information needed by a plugin.
- * This means add all jar files from 'lib' directory, 'classes'
+ * This means add all jar files from 'lib' directory, 'classes' to classpath.
- * to classpath.
  * It's a class for only the internal use.
  *
  * @author Decebal Suiu
@@ -44,27 +42,16 @@ class PluginLoader {
     private PluginClasspath pluginClasspath;
     private PluginClassLoader pluginClassLoader;
 
-    public PluginLoader(PluginManager pluginManager, PluginDescriptor pluginDescriptor, File pluginRepository, PluginClasspath pluginClasspath) {
+    public PluginLoader(File pluginRepository, PluginClassLoader pluginClassLoader, PluginClasspath pluginClasspath) {
         this.pluginRepository = pluginRepository;
+        this.pluginClassLoader = pluginClassLoader;
         this.pluginClasspath = pluginClasspath;
-
-        ClassLoader parent = getClass().getClassLoader();
-        pluginClassLoader = new PluginClassLoader(pluginManager, pluginDescriptor, parent);
-        log.debug("Created class loader '{}'", pluginClassLoader);
-    }
-
-    public File getPluginRepository() {
-        return pluginRepository;
     }
 
     public boolean load() {
         return loadClassesAndJars();
     }
 
-    public PluginClassLoader getPluginClassLoader() {
-		return pluginClassLoader;
-	}
-
 	private boolean loadClassesAndJars() {
        return loadClasses() && loadJars();
     }