tracker issue : CF-3035486

Problem:

application specific default values for tag attributes

In various forums we have over the last year discussed the possibility 
of default values for tag attributes, but AFAIK there has never been a 
conclusion / design. So I would like to kick off a new discussion with a 
design of how I would like to have this feature implemented.

Default values should:
- be application specific;
- be defined in Application.cfc;
- override configuration options in the CF Administrator;
- be overridden by the attributesCollection of the tag;
- be overridden by the attributes of the tag.

In terms of syntax I think defining the default values should look 
something like this:
Application.cfc:
<cfcomponent>
   <cfset this.name = "exampleApp" />
   <cfset this.tagdefaults.cfmail.server = "192.168.17.1" />
   <cfset this.tagdefaults.cfmail.port = 587 />
   <cfset this.tagdefaults.cfquery.datasource = "dsn_example" />
   <cfset this.tagdefaults.cffunction.output = FALSE />
   <cfset ....

Then in your code you could start to use code like:
<cfquery name="expiredUsers">
   SELECT ...
<cfquery>
and CF would automatically add the datasource attribute from the 
tagdefaults.

Discussion in the prerelease forums was at https://prerelease.adobe.com/project/forum/thread.html?cap=87529BDA13744B3DB718E841890B9240&forid={267A8BEA-8D25-435C-A533-6C830DD686CA}&topid={4F96D02B-4AA4-42CC-A41E-5791990D6944}
Method:


Result:

----------------------------- Additional Watson Details -----------------------------

Watson Bug ID:	3035486

External Customer Info:
External Company:  
External Customer Name: Jochem van Dieten
External Customer Email: 14B70C2D446042B59920157F
External Test Config: 07/11/2008

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