我应该调用扩展 CFC 还是父 CFC？
我正在使用 ColdFusion 9.1.2。
我有一个名为 order.cfm 的 CFC。这是“父”CFC。
我有另一个 CFC 调用 orderswrapup.cfc。这是orders.cfc 的扩展。在 orderswrapup.cfc 中，我在顶部有这一行：
<cfcomponent extends="orders">
现在，这不起作用：
objOrders = createObject("component", "orders");
MyResult = objOrders .someMethodActuallyInOrdersWrapUpCFC();
但这确实有效：
objOrders = createObject("component", "orderswrapup");
MyResult = objOrders .someMethodActuallyInOrdersWrapUpCFC();
要访问 orderswrapup.cfc 中的方法，我可以像“在”订单中一样调用该方法吗？ cfc 还是我需要直接调用它？看来我应该可以打电话给家长，而不是孩子。
I am using ColdFusion 9.1.2.
I have a CFC called orders.cfm. This is the "parent" CFC.
I have another CFC call orderswrapup.cfc. This is an extension of orders.cfc. In orderswrapup.cfc, I have this line at the top:
<cfcomponent extends="orders">
Right now, this doesn't work:
objOrders = createObject("component", "orders");
MyResult = objOrders .someMethodActuallyInOrdersWrapUpCFC();
But this does work:
objOrders = createObject("component", "orderswrapup");
MyResult = objOrders .someMethodActuallyInOrdersWrapUpCFC();
To access the methods in orderswrapup.cfc, can I call the method as though it were "in" orders.cfc or do I need to call it directly? It seems that I should be able to call the parent, not the child.
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当您创建新的 orderswrapup 对象时，orderswrapup 可以访问 order 的所有函数，因为 orderswrapup 是 order 的子级。
当您将 orderswrapup.cfc 定义为
一些好的文章 - http://livedocs.adobe.com/coldfusion/8/htmldocs/help.html?content=buildingComponents_30.html
orderswrapup has access to all of order's functions, when you create a new orderswrapup object because orderswrapup is a child of order.
You defined orderswrapup.cfc to inherit all of orders.cfc's functions when you defined orderswrapup.cfc as
<cfcomponent extends="orders">This allows you to call any functions in orders.cfc via orderswrapup.cfc as if they were functions inside of orders.cfc. But orders.cfc has no defined relationship with orderswrapup.cfc, so it can't call functions inside of orderswrapup.cfcSome good writeups - http://livedocs.adobe.com/coldfusion/8/htmldocs/help.html?content=buildingComponents_30.html
扩展 cfc 的成本很高...
如果您发现自己需要扩展超过 3 个级别，您就会开始注意到性能受到影响。
Extending cfcs is expensive...
If you find yourself needing to go more than 3 levels of extending, you'll start to notice a performance hit.