import java.util.Map;

import jadex.bdiv3.BDIAgent;

import jadex.bdiv3.annotation.Belief; import jadex.bdiv3.annotation.Goal;

import jadex.bdiv3.annotation.GoalParameter; import jadex.bdiv3.annotation.GoalResult; import jadex.bdiv3.annotation.Plan; import jadex.bdiv3.annotation.Trigger; import jadex.micro.annotation.Agent; import jadex.micro.annotation.AgentBody; import jadex.micro.annotation.AgentCreated; import jadex.micro.annotation.Description; @Agent

@Description(\) // @Plans(@Plan(body=@Body(TranslatePlan.class))) publicclassTranslateEngChBDI { @Agent

protected BDIAgent translateAgent;

@Belief

protected Map wordTable;

@AgentCreated publicvoid init() {

this.wordTable = new HashMap(); // add some examples of word pairs

wordTable.put(\, \牛奶\);

wordTable.put(\, \香蕉\);

wordTable.put(\, \学校\);

wordTable.put(\, \老师\);

wordTable.put(\, \科学\); } @Goal

publicclassTranslateEngCh { @GoalParameter

protected String eword; @GoalResult

protected String cword;

public TranslateEngCh(String eword) { this.eword = eword;

} }

@Plan(trigger = @Trigger(goals = TranslateEngCh.class)) public String translateEngChPlan(String ewordString) { return wordTable.get(ewordString); }

@AgentBody

publicvoid body() {

String ewordString = \;

String chString = (String) translateAgent.dispatchTopLevelGoal(new TranslateEngCh(ewordString)).get(); System.out.println(\翻译结果：\ + ewordString + \\ + chString); } }

get()方法的作用是返回异步计算的结果，也就是翻译以后的结果。

4. Goal的Retry

从上述的例子中不难发现，goal其实和Plan是没有什么区别的。相反，goal使用起来还是比较麻烦，因为需要Plan来处理一下。但是goal的唯一好处就是，当使用比较复杂的goal的时候，只需要考虑目标即可，不需要去考虑实现的过程。讲目标分解为n多个plan来实

现。不过目前所接触到的问题，都是比较小的规模，不需要尝试不同的plan。但是还是举一个比较小的例子来说明一下。

package a1;

import java.util.HashMap; import java.util.Map;

import jadex.bdiv3.BDIAgent;

import jadex.bdiv3.annotation.Belief; import jadex.bdiv3.annotation.Goal;

import jadex.bdiv3.annotation.GoalParameter; import jadex.bdiv3.annotation.GoalResult; import jadex.bdiv3.annotation.Plan; import jadex.bdiv3.annotation.Trigger;

import jadex.bdiv3.runtime.impl.PlanFailureException; import jadex.micro.annotation.Agent; import jadex.micro.annotation.AgentBody; import jadex.micro.annotation.AgentCreated; import jadex.micro.annotation.Description; @Agent

@Description(\) // @Plans(@Plan(body=@Body(TranslatePlan.class))) publicclassTranslateEngChBDI {