behavioursfilter.java

p2p仿真器。开发者可以工作在覆盖层中进行创造和测试逻辑算法或者创建和测试新的服务。PlanetSim还可以将仿真代码平稳转换为在Internet上的实验代码

package planet.commonapi.behaviours;

import planet.commonapi.Node;
import planet.commonapi.RouteMessage;

/**
* This interface provides a method filter RouteMessages
* before BehaviourPool attempt to match patterns. Filter can be viewed as
* precondition handler which RouteMessage's has to satisfy.   
* @author Marc Sanchez
*/
public interface BehavioursFilter extends java.io.Serializable {
	/**
	 * Given a RouteMessage and a Node as input, filter's method filters the 
	 * input RouteMessage if does not satisfy filter's precondition. 
	 * @param msg RouteMessage taken as input.
	 * @param node Node taken as input.
	 * @return Returns either an array of RouteMessages or null when no messages
	 * need to transmit this node. 
	 */
	public boolean filter(RouteMessage msg, Node node);
	/**
	 * @return Returns the name of the filter. 
	 */
	public String getName();
	/**
	 * @return Returns a string representation of the filter. In general, the toString
	 * method returns a string that "textually represents" this behaviour. The result should 
	 * be a concise but informative representation that is easy for a person to read. 
	 */ 
	public String toString();
}