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urule2.x更新工作区对象和参数

1.function入口函数

@Override
public Object doFunction(Object object, String property,WorkingMemory workingMemory) {
   if(object instanceof String){
      String text=(String)object;
      if(text.equals("参数") || text.equals("parameter")){
         return workingMemory.update(workingMemory.getParameters());
      }else{
         throw new RuleException("Unsupport parameter["+text+"].");
      }
   }else{
      return workingMemory.update(object);
   }
}

2.具体实现方法

//重新评估
@Override
public boolean update(Object obj) {
   reevaluate(obj);
   return true;
}

//1.重置rete
//2.重新跑rete网络
private void reevaluate(Object obj){
   for(ReteInstance reteInstance:reteInstanceList){
      reteInstance.resetForReevaluate(obj);
   }
   evaluationRete(obj);
   buildElseRules(false);
   evaluationContext.clean();
}

//重新评估
private void evaluationRete(Object fact) {
   for(ReteInstance reteInstance:reteInstanceList){
      Collection<FactTracker> trackers=reteInstance.enter(evaluationContext, fact);
      if(trackers!=null){
         agenda.addTrackers(trackers);
      }        
   }
}

原理：一开始根据rete网络评估，然后更新workingmemory里面的对象重新执行rete网络匹配。执行下一个规则的时候，会默认执行这个满足这个条件的action

正文到此结束