GetMetadata()

Usage Notes

Runtime-injected functions are invisible to GetMetadata. When you assign a closure to a component at runtime — myComp.foo = function(){ ... } — the function is callable on the instance but does not appear in GetMetadata( myComp ).functions. Only declared <cffunction> definitions and auto-generated accessors=true getters/setters are surfaced.

This matches Adobe ColdFusion behaviour: GetMetadata() reflects the component's declared structure, not its current runtime member table. If you need to discover dynamically-injected methods, iterate the component as a struct (e.g. structKeyArray( myComp )) — runtime mixins live in the variables/this scope, not in metadata.

The same applies to Component.duplicate(): a duplicate's GetMetadata output is identical to the prototype's, regardless of any runtime mixins applied to either side.

implements is reported on the CFC that declared it, not on descendants.

When a component inherits an interface implementation through extends, the implements key only appears on the metadata of the CFC that originally declared implements="…". Descendant components have an empty implements struct of their own:

// IBase.cfc:    component implements="IFace" { ... }
// IChild.cfc:   component extends="IBase" { ... }
var c = new IChild();
var meta = getMetaData( c );
writeDump( meta.implements );                  // {} — IChild does not directly implement
writeDump( meta.extends.implements.IFace );    // the IFace metadata, declared on IBase

To check whether an instance fulfils an interface across the whole hierarchy, prefer IsInstanceOf( cfc, "interface.path" ), or walk the extends chain looking for the interface key.

The same shape applies to properties and functions: each CFC's metadata reports only what's declared in that file. Inherited members live on meta.extends.properties, meta.extends.functions, and so on — walk the chain to flatten.

The name field is the fully-qualified dotted path.

getMetaData( cfc ).name is the path from the web/test root with / replaced by ., not the relative path you may have passed to new. IsInstanceOf accepts this string, the relative path, or the bare class name (see isinstanceof).