delete corrupted collecion.index on exit for rebuild on next start

see http://forum.yacy-websuche.de/viewtopic.php?p=9725#p9725

git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@5135 6c8d7289-2bf4-0310-a012-ef5d649a1542

source/de/anomic/index/indexCollectionRI.java

@@ -67,6 +67,10 @@ public class indexCollectionRI implements indexRI {
         }
     }
     
+    public void deleteIndexOnExit() {
+    	collectionIndex.deleteIndexOnExit();
+    }
+    
     public long getUpdateTime(final String wordHash) {
         final indexContainer entries = getContainer(wordHash, null);
         if (entries == null) return 0;

source/de/anomic/kelondro/kelondroCollectionIndex.java

@@ -177,6 +177,11 @@ public class kelondroCollectionIndex {
         }
     }
     
+    public void deleteIndexOnExit() {
+    	// will be rebuilt on next start
+    	new File(this.path, this.filenameStub + ".index").deleteOnExit();
+    }
+    
     private void openAllArrayFiles(final boolean indexGeneration, final kelondroByteOrder indexOrder) throws IOException {
         
         final String[] list = this.path.list();

source/de/anomic/plasma/plasmaDHTChunk.java

@@ -270,6 +270,7 @@ public class plasmaDHTChunk {
             indexContainers = new indexContainer[0];
             urlCache = new HashMap<String, indexURLReference>();
             this.status = chunkStatus_FAILED;
+            wordIndex.deleteIndexOnExit(); // delete index on exit for rebuild
             return 0;
         }
     }

source/de/anomic/plasma/plasmaWordIndex.java

@@ -219,6 +219,10 @@ public final class plasmaWordIndex implements indexRI {
         queuePreStack.clear();
     }
     
+    public void deleteIndexOnExit() {
+    	collections.deleteIndexOnExit();
+    }
+    
     private void initActiveCrawlProfiles() {
         this.defaultProxyProfile = null;
         this.defaultRemoteProfile = null;