code: //==============================================================================
  //	
  //	Copyright (c) 2002-
  //	Authors:
  //	* Dave Parker <david.parker@comlab.ox.ac.uk> (University of Oxford)
  //	
  //------------------------------------------------------------------------------
  //	
  //	This file is part of PRISM.
  //	
  //	PRISM is free software; you can redistribute it and/or modify
  //	it under the terms of the GNU General Public License as published by
  //	the Free Software Foundation; either version 2 of the License, or
  //	(at your option) any later version.
  //	
  //	PRISM is distributed in the hope that it will be useful,
  //	but WITHOUT ANY WARRANTY; without even the implied warranty of
  //	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  //	GNU General Public License for more details.
  //	
  //	You should have received a copy of the GNU General Public License
  //	along with PRISM; if not, write to the Free Software Foundation,
  //	Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  //	
  //==============================================================================
  
  package explicit.rewards;
  
  import explicit.Model;
  import explicit.Product;
  
  /**
   * Classes that provide (read) access to explicit-state rewards for an MDP.
   */
  public interface MDPRewards extends Rewards
  {
  	/**
  	 * Get the state reward for state {@code s}.
  	 */
  	public abstract double getStateReward(int s);
  
  	/**
  	 * Get the transition reward for the {@code i}th choice from state {@code s}.
  	 */
  	public abstract double getTransitionReward(int s, int i);
  
  	@Override
  	public MDPRewards liftFromModel(Product<? extends Model> product);
  
  	/** Returns true if this reward structure has transition rewards */
  	public boolean hasTransitionRewards();
  }
  