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module ActionWebService # :nodoc:
# Action Web Service supports the following base types in a signature:
#
# [<tt>:int</tt>] Represents an integer value, will be cast to an integer using <tt>Integer(value)</tt>
# [<tt>:string</tt>] Represents a string value, will be cast to an string using the <tt>to_s</tt> method on an object
# [<tt>:base64</tt>] Represents a Base 64 value, will contain the binary bytes of a Base 64 value sent by the caller
# [<tt>:bool</tt>] Represents a boolean value, whatever is passed will be cast to boolean (<tt>true</tt>, '1', 'true', 'y', 'yes' are taken to represent true; <tt>false</tt>, '0', 'false', 'n', 'no' and <tt>nil</tt> represent false)
# [<tt>:float</tt>] Represents a floating point value, will be cast to a float using <tt>Float(value)</tt>
# [<tt>:time</tt>] Represents a timestamp, will be cast to a <tt>Time</tt> object
# [<tt>:datetime</tt>] Represents a timestamp, will be cast to a <tt>DateTime</tt> object
# [<tt>:date</tt>] Represents a date, will be cast to a <tt>Date</tt> object
#
# For structured types, you'll need to pass in the Class objects of
# ActionWebService::Struct and ActiveRecord::Base derivatives.
module SignatureTypes
def canonical_signature(signature) # :nodoc:
return nil if signature.nil?
unless signature.is_a?(Array)
raise(ActionWebServiceError, "Expected signature to be an Array")
end
i = -1
signature.map{ |spec| canonical_signature_entry(spec, i += 1) }
end
def canonical_signature_entry(spec, i) # :nodoc:
orig_spec = spec
name = "param#{i}"
if spec.is_a?(Hash)
name, spec = spec.keys.first, spec.values.first
end
type = spec
if spec.is_a?(Array)
ArrayType.new(orig_spec, canonical_signature_entry(spec[0], 0), name)
else
type = canonical_type(type)
if type.is_a?(Symbol)
BaseType.new(orig_spec, type, name)
else
StructuredType.new(orig_spec, type, name)
end
end
end
def canonical_type(type) # :nodoc:
type_name = symbol_name(type) || class_to_type_name(type)
type = type_name || type
return canonical_type_name(type) if type.is_a?(Symbol)
type
end
def canonical_type_name(name) # :nodoc:
name = name.to_sym
case name
when :int, :integer, :fixnum, :bignum
:int
when :string, :text
:string
when :base64, :binary
:base64
when :bool, :boolean
:bool
when :float, :double
:float
when :time, :timestamp
:time
when :datetime
:datetime
when :date
:date
else
raise(TypeError, "#{name} is not a valid base type")
end
end
def canonical_type_class(type) # :nodoc:
type = canonical_type(type)
type.is_a?(Symbol) ? type_name_to_class(type) : type
end
def symbol_name(name) # :nodoc:
return name.to_sym if name.is_a?(Symbol) || name.is_a?(String)
nil
end
def class_to_type_name(klass) # :nodoc:
klass = klass.class unless klass.is_a?(Class)
if derived_from?(Integer, klass) || derived_from?(Fixnum, klass) || derived_from?(Bignum, klass)
:int
elsif klass == String
:string
elsif klass == Base64
:base64
elsif klass == TrueClass || klass == FalseClass
:bool
elsif derived_from?(Float, klass) || derived_from?(Precision, klass) || derived_from?(Numeric, klass)
:float
elsif klass == Time
:time
elsif klass == DateTime
:datetime
elsif klass == Date
:date
else
nil
end
end
def type_name_to_class(name) # :nodoc:
case canonical_type_name(name)
when :int
Integer
when :string
String
when :base64
Base64
when :bool
TrueClass
when :float
Float
when :time
Time
when :date
Date
when :datetime
DateTime
else
nil
end
end
def derived_from?(ancestor, child) # :nodoc:
child.ancestors.include?(ancestor)
end
module_function :type_name_to_class
module_function :class_to_type_name
module_function :symbol_name
module_function :canonical_type_class
module_function :canonical_type_name
module_function :canonical_type
module_function :canonical_signature_entry
module_function :canonical_signature
module_function :derived_from?
end
class BaseType # :nodoc:
include SignatureTypes
attr :spec
attr :type
attr :type_class
attr :name
def initialize(spec, type, name)
@spec = spec
@type = canonical_type(type)
@type_class = canonical_type_class(@type)
@name = name
end
def custom?
false
end
def array?
false
end
def structured?
false
end
def human_name(show_name=true)
type_type = array? ? element_type.type.to_s : self.type.to_s
str = array? ? (type_type + '[]') : type_type
show_name ? (str + " " + name.to_s) : str
end
end
class ArrayType < BaseType # :nodoc:
attr :element_type
def initialize(spec, element_type, name)
super(spec, Array, name)
@element_type = element_type
end
def custom?
true
end
def array?
true
end
end
class StructuredType < BaseType # :nodoc:
def each_member
if @type_class.respond_to?(:members)
@type_class.members.each do |name, type|
yield name, type
end
elsif @type_class.respond_to?(:columns)
i = -1
@type_class.columns.each do |column|
yield column.name, canonical_signature_entry(column.type, i += 1)
end
end
end
def custom?
true
end
def structured?
true
end
end
class Base64 < String # :nodoc:
end
end
|
