ColdFusion Component MetaData
I recently needed to get the list of functions from a component that I was building. This is helpful especially if you want to loop through the list of functions and execute all of them. Now, this is possible by listing the functions in a variable in a component, but that's not very scalable because every time I add or remove a function, I have to subsequently add or remove that function from the list. So, here is how you dynamically get the list of functions from a component:
<!--- Instantiate the component. CMS --->
<cfset obj = CreateObject("component","com.test.ExpressComponent") />
<!--- Get the metadata. CMS --->
<cfset md = getMetaData(obj) />
<!--- Now loop through the variables. CMS --->
<cfset mdfunc = md.functions />
<!--- Here I dump the info. But it can be processed in whatever manner. CMS --->
<cfloop from="1" to="#ArrayLen(mdfunc)#" index="k">
<p><cfdump var="#mdfunc[k]#" /></p>
</cfloop>
<cfset obj = CreateObject("component","com.test.ExpressComponent") />
<!--- Get the metadata. CMS --->
<cfset md = getMetaData(obj) />
<!--- Now loop through the variables. CMS --->
<cfset mdfunc = md.functions />
<!--- Here I dump the info. But it can be processed in whatever manner. CMS --->
<cfloop from="1" to="#ArrayLen(mdfunc)#" index="k">
<p><cfdump var="#mdfunc[k]#" /></p>
</cfloop>
The getMetaData() function returns a nicely formatted structure of various information about the component. Here is a dump of it:
Lot's of valuable information about the component.
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