001 // GraphLab Project: http://graphlab.sharif.edu 002 // Copyright (C) 2008 Mathematical Science Department of Sharif University of Technology 003 // Distributed under the terms of the GNU Lesser General Public License (LGPL): http://www.gnu.org/licenses/ 004 005 /* 006 * PostWorkHandler.java 007 * 008 * Created on November 15, 2004, 3:11 AM 009 */ 010 011 package graphlab.library.event.handlers; 012 013 import graphlab.library.BaseVertex; 014 015 /** 016 * Handles postwork used by algorithms such as BFS. 017 * Depending on the application, the user can define custom classes that 018 * implements PostWorkHandler and pass them to algorithms. 019 * 020 * @author Omid Aladini 021 */ 022 public interface PostWorkHandler<VertexType extends BaseVertex> { 023 /** 024 * Does postwork when traversing back from w to v. 025 * 026 * @param returnFrom Id of the vertex traversing back from. 027 * @param returnTo Id of the vertex traversing back to. 028 * @return whether the traversal should stop at this point. 029 */ 030 public boolean doPostWork(VertexType returnFrom, VertexType returnTo); 031 }