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It's common practice to store a copy of a CFC and a variable for use throughout your application. These singletons or single instances of objects are used a lot, but CFBuilder won't know about them unless you tell it where to find them. You can set up variable mappings to tell ColdFusion about any CFCs that you have stored in a scoped variable. To demonstrate this, let's assume that we already have access to our LoginService through an application variable, Application.LoginService. To tell CFBuilder that this CFC lives in a specific application variable, I just need to right-click on my project in the Navigator, choose Properties, and go to the ColdFusion Variable Mappings section.
Here, I can add as many mappings as I want. I will click New and I am going to map Application.LoginService to the cfcs.LoginService component. I need to use the exact same path here that I would use inside of my CreateObject statement. Click OK and I can see my new mapping. I can then add as many as I would like. If you make a mistake, you will need to actually delete the mapping and create a new one. There is no way to edit a mapping through this dialog. Click OK.
And now I am going to replace Line 8 with a new one. We will do Session.LoggedIn = Application. You can see Application selected in my code hints, so press Enter. I can then see LoginService in my code hints. Press Enter again, press a period. And because I am right up against the closing bracket on the cfset, my code hints don't pop-up. But if I press Ctrl+Spacebar, I can then see the AuthenticateUser method. Press Enter once more, and then I can add FORM.Username and FORM.password.
So, now I have access to all of the methods on this application scoped variable. Now, if you are using any sort of framework, like model-Glue, Fusebox or ColdBox, you will most definitely have a large number of objects that are inside of scoped variables. To get the most use out of these objects, be sure to set them up in the Variable Mappings in your project properties.
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