Creating a class that implements F4FHandler
To create a new framework handler, you must first create
a class that implements F4FHandler. Two methods must
be implemented to support the Framework for Frameworks functionality.
Override isApplicable
Purpose: AppScan®
Source calls isApplicable to
determine if it should run your handler. If you return True,
it will run your handler by calling handleApp. If
you return False, nothing further will be called.
isApplicable includes
a check at the beginning of the method to ensure the application is
a Java™ application before continuing.Observe
in the example: In the Ejb2xHandler, isApplicable first
checks to see if the language is appropriate (as EJB is only present
in Java applications). If the
application is Java-based, isApplicable then searches
for any instances of ejb-jar.xml, which is the
required configuration file for an EJB 2 application. If configuration
files are found, they are read into the handler and True is
returned to let AppScan
Source know
that it should call handleApp to deal with the information
contained in the configuration files.
Override handleApp
Purpose: AppScan
Source calls handleApp to
allow you to determine and set information about the framework or
frameworks in use by the current application being scanned. The parameters F4FApp and F4FAction are
used to get information about the application and set specifics about
how to handle the frameworks that are present and that your handler
handles.