Class: App::Container

Inherits:
Object
  • Object
show all
Defined in:
lib/app-ctx.rb

Constant Summary collapse

Messages = 
{
    :no_entrypoint  => "\n    ::app-ctx:: \n\n -> sorry, your main class (\#{clazz}) seems not to have a default\n -> 'application_main' entrypoint and no method argument was given, so i don't\n -> know what to do.\n\n    thank you, good bye and have a nice day\n\n"
}

Instance Method Summary collapse

Constructor Details

#initialize(context) ⇒ Container

Returns a new instance of Container.



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# File 'lib/app-ctx.rb', line 149

def initialize context
    @context = context
end

Instance Method Details

#execute(clazz = nil) ⇒ Object 



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# File 'lib/app-ctx.rb', line 153

def execute clazz = nil

    if block_given?
        warn "attached block takes precedence over class!" if clazz
        return yield(@context)
    end

    # create applicaton instance with or without context c'tor (this is
    # IoC: Constructor Dependency Injection)
    app = clazz.new(@context) rescue clazz.new

    setter_injection app, @context

    begin 
        # first try the default entry point
        app.application_main @context

    rescue NoMethodError => e
        if app.respond_to? :application_main
            DL.logger.error "failed invokation", e
        else
            if 0 == @context.argv.length 
                inform :no_entrypoint, binding()
                RDoc::usage
                return
            else
                # one or more args  =>  first arg is method with rest
                # as params
                begin
                    op = @context.argv.shift
                    app.send(op, @context)
                rescue => e
                    DL.logger.error "oops: #{e}", e
                end
            end
        end
    end

    app # the created application instance
end

#inform(message_id, binding) ⇒ Object 



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# File 'lib/app-ctx.rb', line 144

def inform message_id, binding
    m = Messages[message_id]
    puts eval("\"#{m}\"", binding)
end