jruby

XMLRPC::Client#call

Invokes the method named +method+ with the parameters given by
+args+ on the XML-RPC server.

The +method+ parameter is converted into a String and should
be a valid XML-RPC method-name.

Each parameter of +args+ must be of one of the following types,
where Hash, Struct and Array can contain any of these listed _types_:

* Fixnum, Bignum
* TrueClass, FalseClass, +true+, +false+
* String, Symbol
* Float
* Hash, Struct
* Array
* Date, Time, XMLRPC::DateTime
* XMLRPC::Base64
* A Ruby object which class includes XMLRPC::Marshallable
  (only if Config::ENABLE_MARSHALLING is +true+).
  That object is converted into a hash, with one additional key/value
  pair <code>___class___</code> which contains the class name
  for restoring that object later.

The method returns the return-value from the Remote Procedure Call.

The type of the return-value is one of the types shown above.

A Bignum is only allowed when it fits in 32-bit. A XML-RPC
+dateTime.iso8601+ type is always returned as a XMLRPC::DateTime object.
Struct is never returned, only a Hash, the same for a Symbol, where as a
String is always returned. XMLRPC::Base64 is returned as a String from
xmlrpc4r version 1.6.1 on.

If the remote procedure returned a fault-structure, then a
XMLRPC::FaultException exception is raised, which has two accessor-methods
+faultCode+ an Integer, and +faultString+ a String.

Source | Google | Stack overflow