* Auto re-prepare query on weird 'no query' error.

src/libtomahawk/database/TomahawkSqlQuery.cpp

@@ -51,6 +51,14 @@ TomahawkSqlQuery::escape( QString identifier )
 }
 
 
+bool
+TomahawkSqlQuery::prepare( const QString& query )
+{
+    m_query = query;
+    return QSqlQuery::prepare( query );
+}
+
+
 bool
 TomahawkSqlQuery::exec( const QString& query )
 {
@@ -76,6 +84,12 @@ TomahawkSqlQuery::exec()
     unsigned int retries = 0;
     while ( !QSqlQuery::exec() && ++retries < 10 )
     {
+        if ( lastError().text().toLower().contains( "no query" ) )
+        {
+            tDebug() << Q_FUNC_INFO << "Re-preparing query!";
+            prepare( m_query );
+        }
+
         if ( isBusyError( lastError() ) )
             retries = 0;
 
@@ -136,5 +150,5 @@ TomahawkSqlQuery::isBusyError( const QSqlError& error ) const
 {
     const QString text = error.text().trimmed().toLower();
 
-    return ( text.contains( "no query" ) || text.contains( "locked" ) || text.contains( "busy" ) || text.isEmpty() );
+    return ( text.contains( "locked" ) || text.contains( "busy" ) || text.isEmpty() );
 }

src/libtomahawk/database/TomahawkSqlQuery.h

@@ -35,6 +35,7 @@ public:
 
     static QString escape( QString identifier );
 
+    bool prepare( const QString& query );
     bool exec( const QString& query );
     bool exec();
 
@@ -46,6 +47,7 @@ private:
     void showError();
 
     QSqlDatabase m_db;
+    QString m_query;
 };
 
 #endif // TOMAHAWKSQLQUERY_H