java.util.logging.Logger.log（）是责任链模式吗？ [英] Is java.util.logging.Logger.log() is an chain of responsibility pattern?

问题描述

java.util.logging.Logger.log（）是一个责任链模式吗？如果是的话，日志方法调用如何链接到下一个调用？

Is java.util.logging.Logger.log() is a chain of responsibility pattern?If so how log method call is getting chained for the next call?

推荐答案

以下是相关的代码：

// Post the LogRecord to all our Handlers, and then to
// our parents' handlers, all the way up the tree.

Logger logger = this;
while (logger != null) {
    Handler targets[] = logger.getHandlers();

    //...

    if (!logger.getUseParentHandlers()) {
      break;
    }

    logger = logger.getParent();
}
}

您可以看到每个日志记录都传递给每个 Handler 分配给给定的记录器，如果 useParentHandlers 为 true ，将相同的算法一直应用到父节点直到顶部。

As you can see each logging record is passed to every Handler assigned to a given logger and, if useParentHandlers is true, the same algorithm is applied to parent all the way up to the top.

因此，从本质上讲，这是一种责任链模式，其中链中的每个元素都可以处理碎片的请求。

So essentially this is a chain of responsibility pattern where each element in the chain might handle piece of the request.

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