Ruby 2.1.0 リファレンスマニュアル > ライブラリ一覧 > xmlrpc/serverライブラリ > XMLRPC::BasicServerクラス > add_handler

instance method XMLRPC::BasicServer#add_handler

add_handler(name, signature=nil, help=nil) { aBlock }[permalink][rdoc]

Adds aBlock to the list of handlers, with name as the name of the method. Parameters signature and help are used by the Introspection method if specified, where signature is either an Array containing strings each representing a type of it's signature (the first is the return value) or an Array of Arrays if the method has multiple signatures. Value type-names are "int, boolean, double, string, dateTime.iso8601, base64, array, struct".

Parameter help is a String with informations about how to call this method etc.

A handler method or code-block can return the types listed at XMLRPC::Client#call. When a method fails, it can tell it the client by throwing an XMLRPC::FaultException like in this example:

s.add_handler("michael.div") do |a,b|
  if b == 0
    raise XMLRPC::FaultException.new(1, "division by zero")
  else
    a / b
  end
end

The client gets in the case of b==0 an object back of type XMLRPC::FaultException that has a faultCode and faultString field.

add_handler(prefix, obj)[permalink][rdoc]

This is the second form of XMLRPC::BasicServer#add_handler. To add an object write:

server.add_handler("michael", MyHandlerClass.new)

All public methods of MyHandlerClass are accessible to the XML-RPC clients by (('michael."name of method"')). This is where the class_delim in XMLRPC::BasicServer.new has it's role, a XML-RPC method-name is defined by prefix + class_delim + (('"name of method"')).

add_handler(interface, obj)[permalink][rdoc]

This is the third form of XMLRPC::BasicServer#add_handler.

Use XMLRPC::interface to generate an ServiceInterface object, which represents an interface (with signature and help text) for a handler class.

Parameter interface must be of type XMLRPC::ServiceInterface. Adds all methods of obj which are defined in interface to the server.

This is the recommended way of adding services to a server!