void BookForm::newCurrentAuthor( QSqlRecord * author )
{
    BookDataTable->setFilter( "authorid=" + author->value( "id" ).toString() );  
    BookDataTable->refresh();
}

void BookForm::primeInsertAuthor( QSqlRecord * buffer )
{
    QSqlQuery query; 
    query.exec( "UPDATE sequence SET sequence = sequence + 1 WHERE tablename='author';" ); 
    query.exec( "SELECT sequence FROM sequence WHERE tablename='author';" ); 
    if ( query.next() ) { 
	buffer->setValue( "id", query.value( 0 ) ); 
    } 
}