Delete lucene directory on upgrade to work-around Lucene++ (<3.0.6) crashes.

src/libtomahawk/TomahawkSettings.cpp

@@ -23,6 +23,7 @@
 #include "collection/Collection.h"
 #include "database/DatabaseCommand_UpdateSearchIndex.h"
 #include "database/Database.h"
+#include "database/fuzzyindex/DatabaseFuzzyIndex.h"
 #include "infosystem/InfoSystemCache.h"
 #include "playlist/PlaylistUpdaterInterface.h"
 #include "utils/Logger.h"
@@ -312,6 +313,7 @@ TomahawkSettings::doUpgrade( int oldVersion, int newVersion )
     else if ( oldVersion == 4 || oldVersion == 5 )
     {
         // 0.3.0 contained a bug which prevent indexing local files. Force a reindex.
+        Tomahawk::DatabaseFuzzyIndex::wipeIndex();
         updateIndex();
     }
     else if ( oldVersion == 6 )
@@ -676,10 +678,11 @@ TomahawkSettings::doUpgrade( int oldVersion, int newVersion )
     else if ( oldVersion == 15 )
     {
         // 0.8.0 switches to Lucene++. Force a reindex.
-        // updateIndex();
+        // (obsoleted by version 16 update)
     }
     else if ( oldVersion == 16 )
     {
+        Tomahawk::DatabaseFuzzyIndex::wipeIndex();
         updateIndex();
     }
 }
@@ -1534,8 +1537,8 @@ TomahawkSettings::updateIndex()
         return;
     }
 
-    tDebug() << Q_FUNC_INFO << "Wiping index.";
-//    Database::instance()->wipeIndex();
+    tDebug() << Q_FUNC_INFO << "Updating fuzzy index.";
+
     Tomahawk::DatabaseCommand* cmd = new Tomahawk::DatabaseCommand_UpdateSearchIndex();
     Database::instance()->enqueue( QSharedPointer<Tomahawk::DatabaseCommand>( cmd ) );
 }

src/libtomahawk/database/fuzzyindex/DatabaseFuzzyIndex.cpp

@@ -20,11 +20,17 @@
 
 #include "database/DatabaseImpl.h"
 #include "database/Database.h"
+#include "utils/TomahawkUtils.h"
+
+#include <QDir>
+
 
 namespace Tomahawk {
 
+static QString s_indexPathName = "tomahawk.lucene";
+
 DatabaseFuzzyIndex::DatabaseFuzzyIndex( QObject* parent, bool wipe )
-    : FuzzyIndex( parent, "tomahawk.lucene", wipe )
+    : FuzzyIndex( parent, s_indexPathName, wipe )
 {
 }
 
@@ -36,4 +42,11 @@ DatabaseFuzzyIndex::updateIndex()
     Tomahawk::Database::instance()->enqueue( Tomahawk::dbcmd_ptr( cmd ) );
 }
 
+
+void
+DatabaseFuzzyIndex::wipeIndex()
+{
+    TomahawkUtils::removeDirectory( TomahawkUtils::appDataDir().absoluteFilePath( s_indexPathName ) );
+}
+
 } // namespace Tomahawk

src/libtomahawk/database/fuzzyindex/DatabaseFuzzyIndex.h

@@ -29,6 +29,7 @@ public:
     explicit DatabaseFuzzyIndex( QObject* parent, bool wipe = false );
 
     virtual void updateIndex();
+    static void wipeIndex();
 };
 
 } // namespace Tomahawk