Module: Stratagem::Crawler::ParameterResolver

Included in:
RouteInvoker
Defined in:
lib/stratagem/crawler/parameter_resolver.rb

Instance Method Summary collapse

Instance Method Details

#resolve_id_with_convention(route_container, unknown_params, resolved_params) ⇒ Object

resolve the ID parameter by looking at the previous segment of the URL



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# File 'lib/stratagem/crawler/parameter_resolver.rb', line 81

def resolve_id_with_convention(route_container, unknown_params, resolved_params)
  if (unknown_params.include?('id'))
    route_container.path.split('/').inject(nil) {|prev,part|
      if (prev && part =~ /^\:id/)
        begin
          resolved_params['id'] = prev.singularize.camelize.constantize
          unknown_params.delete('id')
        rescue
          Stratagem.logger.error($!)
        end
      end
      part
    }
  end
end

#resolve_parameter_types(route_container) ⇒ Object 



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# File 'lib/stratagem/crawler/parameter_resolver.rb', line 4

def resolve_parameter_types(route_container)
  resolved_params = {}
  route_infos, params = build_url(route_container, resolved_params)
  route_info = route_infos.first
  unknown_params = params.keys
  puts "resolving parameter types - #{unknown_params.inspect}"

  if (unknown_params.size > 0)
    resolve_with_convention(unknown_params, resolved_params)
    resolve_with_instrumentation(route_container, resolved_params)
    resolve_id_with_convention(route_container, unknown_params, resolved_params)
    log "\tresolved parameter types - #{resolved_params.keys.inspect}, unknown - #{unknown_params.inspect}"
  end
  
  if (resolved_params.size > 0)
    resolved_params
  else
    nil
  end
end

#resolve_with_convention(unknown_params, resolved_params) ⇒ Object 



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# File 'lib/stratagem/crawler/parameter_resolver.rb', line 61

def resolve_with_convention(unknown_params, resolved_params)
  unknown_params.clone.each do |param|
    if (param.to_s =~ /_id$/)
      begin
        puts "\t\tattempting to resolve #{param.sub(/^:/,'').sub(/_id$/, '').camelize}"
        model = param.sub(/^:/,'').sub(/_id$/, '').camelize.constantize
        #success
        resolved_params[param] = model
        unknown_params.delete(param)
        puts "\t\tresolved #{param} to #{model.name} using convention"
      rescue NameError
        puts "NAMEERROR: #{$!.message}"
      rescue
        puts "ERROR: #{$!.message}"
      end
    end
  end
end

#resolve_with_instrumentation(route_container, resolved_params) ⇒ Object 



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# File 'lib/stratagem/crawler/parameter_resolver.rb', line 25

def resolve_with_instrumentation(route_container, resolved_params)
  route_infos, params = build_url(route_container, resolved_params)
  route_info = route_infos.first
  unknown_params = params.keys

  progress = nil
  while ((unknown_params.size > 0) && (progress.nil? || (progress > 0)))
    progress = 0

    delta = model_invocations_for_request do
      call_route(route_info, false)
    end

    puts "\tcalled route, found #{delta.size} invocations"

    unknown_params.clone.each do |key|
      value = params[key]
      value_s = params[key].map {|v| v.to_s }
      delta.each do |invocation|
        # TODO inspect is a hack, refactor
        if (invocation.args.include?(value.first)) || (invocation.args.inspect.include?('"'+value.first.to_s+'"'))
          # found match
          puts "\t\tresolved #{key} to #{invocation.model_class} using instrumentation"
          unknown_params.delete(key)
          resolved_params[key] = invocation.model_class
          progress += 1
          break
        end
      end
    end

    route_infos, params = build_url(route_container, resolved_params)
    route_info = route_infos.first
  end
end