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请帮我理解一行代码

[英]Please help me understand one line of code

原文 2022-07-14 09:11:21 7 1 javascript/ mirth

I've inherited a series of mirth channels that I need to modify but don't understand everything that has been done.我继承了一系列我需要修改但不了解所做的一切的欢乐频道。

Yes, I could rewrite them 'my way' but time is short so, if anyone can explain what some of the code does that might be a real life saver.是的，我可以用“我的方式”重写它们，但时间很短，如果有人能解释其中一些代码的作用，那可能是一个真正的救星。

The code I have inherited makes extensive use of '*::' (see example below).我继承的代码广泛使用了 '*::' （参见下面的示例）。

tmp.*::['Body'].*::['SavePathologyResults'].*::['request'].*::['PathologyResults'].*::['SavePathologyResultRequest'][index] = newWCFNode;

While I get a general feel from this, what exactly does '*::' mean/do?虽然我从中得到了一般的感觉，但 '*::' 到底是什么意思/做什么？

Thanks in anticipation...谢谢期待...

(For context, 'tmp' is an XML SOAP envelope) （对于上下文，'tmp' 是一个 XML SOAP 信封）

1 个解决方案

In E4X (ECMAScript for XML) , :: is the syntax for qualified identifiers (11.1.2).在E4X (ECMAScript for XML)中， ::是限定标识符 (11.1.2) 的语法。 *::['Body'] (or the equivalent *::Body ) is the Body identifier in any namespace (11.1.3). *::['Body'] （或等效的*::Body ）是任何命名空间 (11.1.3) 中的Body标识符。 Accessing it as the property of an XML or XMLList object means getting a new XMLList of all children with that identifier as a node name (11.2.1).将其作为 XML 或 XMLList 对象的属性进行访问意味着获取具有该标识符作为节点名称 (11.2.1) 的所有子节点的新 XMLList。

So, that statement gets <Body> elements in tmp , then <SavePathologyResults> elements in those <Body> elements, then …, then <SavePathologyResultRequest> elements in those <PathologyResults> elements, and replaces the index th <SavePathologyResultRequest> with newWCFNode (11.6.2) – where all of the aforementioned (and aforeunmentioned) elements could belong to any namespace.因此，该语句获取tmp中的<Body> Body> 元素，然后是那些<Body>元素中的<SavePathologyResults>元素，然后......，然后是那些<PathologyResults>元素中的<SavePathologyResultRequest>元素，并将index th <SavePathologyResultRequest>替换为newWCFNode ( 11.6.2) – 所有上述（和前面提到的）元素都可以属于任何命名空间。