item.setDOI(Constants.MINIMUM_DOI);
}
// set up the graph traversal
TupleSet src = m_vis.getGroup(m_sources);
Iterator srcs = new FilterIterator(src.tuples(), m_groupP);
m_bfs.init(srcs, m_distance, Constants.NODE_AND_EDGE_TRAVERSAL);
// traverse the graph
while ( m_bfs.hasNext() ) {
VisualItem item = (VisualItem)m_bfs.next();