From dba7ba079e19a0548caab1159adf2fa80ed50c7a Mon Sep 17 00:00:00 2001
From: danielr <danielr@6c8d7289-2bf4-0310-a012-ef5d649a1542>
Date: Mon, 23 Jun 2008 16:55:46 +0000
Subject: [PATCH] fixed NPE seen with queues_p.xml (serverClassLoader finds
 already loaded classes)

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@4952 6c8d7289-2bf4-0310-a012-ef5d649a1542
---
 .../kelondro/kelondroRowCollection.java       |  2 +-
 .../de/anomic/server/serverClassLoader.java   | 37 ++++++++++++++++---
 2 files changed, 32 insertions(+), 7 deletions(-)

diff --git a/source/de/anomic/kelondro/kelondroRowCollection.java b/source/de/anomic/kelondro/kelondroRowCollection.java
index ead506a1e..ad2bea93a 100644
--- a/source/de/anomic/kelondro/kelondroRowCollection.java
+++ b/source/de/anomic/kelondro/kelondroRowCollection.java
@@ -615,7 +615,7 @@ public class kelondroRowCollection {
         }
     }
     
-    private final int partition(int L, int R, int S, byte[] swapspace) {
+    final int partition(int L, int R, int S, byte[] swapspace) {
 		// L is the first element in the sequence
         // R is the right bound of the sequence, and outside of the sequence
         // S is the bound of the sorted elements in the sequence
diff --git a/source/de/anomic/server/serverClassLoader.java b/source/de/anomic/server/serverClassLoader.java
index 7dcbdfb8b..ee43b0c87 100644
--- a/source/de/anomic/server/serverClassLoader.java
+++ b/source/de/anomic/server/serverClassLoader.java
@@ -45,8 +45,14 @@ import java.io.File;
 import java.io.IOException;
 import java.util.HashMap;
 
-public final class serverClassLoader extends ClassLoader {
+import de.anomic.server.logging.serverLog;
 
+public final class serverClassLoader extends ClassLoader {
+    /**
+     * directory of class files
+     */
+    private static final String HTROOT = "htroot/";
+    private final static String baseDir = System.getProperty("user.dir");
     private final HashMap<File, Class<?>> classes;
 
     public serverClassLoader() {
@@ -77,7 +83,6 @@ public final class serverClassLoader extends ClassLoader {
         } catch (IOException e) {
             throw new ClassNotFoundException("Unable to resolve the classfile path");
         }
-        
         // try to load the class
         synchronized(classFileName.intern()) {
             // first try: take the class out of the cache, denoted by the classname    
@@ -89,10 +94,29 @@ public final class serverClassLoader extends ClassLoader {
             // this file cannot exist for real, since we stripped off the .class
             // we constructed the classfile for the only purpose to strip off the name:
             
-            // get the class name out of the classfile
-            String classname = classfile.getName();
-            int p = classname.indexOf(".");
-            classname = classname.substring(0, p);
+            /* get the class name out of the classfile */
+            // make classFileName relative
+            classFileName = classFileName.substring(classFileName.indexOf(baseDir) + baseDir.length());
+            // special source dirs
+            if(classFileName.contains(HTROOT)) {
+                classFileName = classFileName.substring(classFileName.indexOf(HTROOT) + HTROOT.length());
+            }
+            
+            String packge = "";
+            final int endPackage = classFileName.lastIndexOf(File.separatorChar);
+            if(endPackage != -1) {
+                packge = classFileName.substring(0, endPackage);
+                // the files under htroot/yacy are all in 'default package'!
+                if(packge.startsWith("yacy")) {
+                    packge = "";
+                }
+                if(packge.length() > 0) {
+                    packge.replace(File.separatorChar, '.');
+                    packge += ".";
+                }
+            }
+            int p = classFileName.indexOf(".", endPackage);
+            String classname = packge + classFileName.substring(endPackage + 1, p);
             
             // now that we have the name, we can create the real class file
             //classfile = new File(classkey + ".class");
@@ -126,6 +150,7 @@ public final class serverClassLoader extends ClassLoader {
             } catch (LinkageError ee) {
                 c = findLoadedClass(classname);
                 if (c!=null) return c;                
+                serverLog.logSevere("ClassLoader", "class "+ classname +" not defined: "+ ee);
             } catch (IOException ee) {
                 //System.out.println("INTERNAL ERROR2 in cachedClassLoader: " + ee.getMessage());
                 throw new ClassNotFoundException(classfile.toString());