Class: Lafcadio::ObjectStore::MethodDispatch

Inherits:
Object
  • Object
show all
Defined in:
lib/lafcadio/objectStore.rb

Overview

:nodoc:

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(orig_method, maybe_proc, *orig_args) ⇒ MethodDispatch

Returns a new instance of MethodDispatch.



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# File 'lib/lafcadio/objectStore.rb', line 12

def initialize( orig_method, maybe_proc, *orig_args )
	@orig_method = orig_method
	@maybe_proc = maybe_proc
	@orig_args = orig_args
	@methodName = orig_method.id2name
	if @methodName =~ /^get(.*)$/
		dispatch_get_method
	else
		raise_no_method_error
	end
end

Instance Attribute Details

#args ⇒ Object (readonly)

Returns the value of attribute args.



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# File 'lib/lafcadio/objectStore.rb', line 10

def args
  @args
end

#symbol ⇒ Object (readonly)

Returns the value of attribute symbol.



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# File 'lib/lafcadio/objectStore.rb', line 10

def symbol
  @symbol
end

Instance Method Details

#dispatch_get_method ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 63

def dispatch_get_method
	begin
		dispatch_get_singular
	rescue CouldntMatchObjectTypeError
		objectTypeName = English.singular( method_name_after_get )
		begin
			@domain_class = DomainObject.
			                getObjectTypeFromString( objectTypeName )
			dispatch_get_plural
		rescue CouldntMatchObjectTypeError
			raise_no_method_error
		end
	end
end

#dispatch_get_plural ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 24

def dispatch_get_plural
	if @orig_args.size == 0 && @maybe_proc.nil?
		@symbol = :getAll
		@args = [ @domain_class ]
	else
		searchTerm = @orig_args[0]
		fieldName = @orig_args[1]
		if searchTerm.nil? && @maybe_proc.nil? && fieldName.nil?
			msg = "ObjectStore\##{ @orig_method } needs a field name as its " +
			      "second argument if its first argument is nil"
			raise( ArgumentError, msg, caller )
		end
		dispatch_get_plural_by_query_block_or_search_term( searchTerm,
		                                                   fieldName )
	end
end

#dispatch_get_plural_by_query_block ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 41

def dispatch_get_plural_by_query_block
	inferrer = Query::Inferrer.new( @domain_class ) { |obj|
		@maybe_proc.call( obj )
	}
	@symbol = :getSubset
	@args = [ inferrer.execute ]
end

#dispatch_get_plural_by_query_block_or_search_term(searchTerm, fieldName) ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 49

def dispatch_get_plural_by_query_block_or_search_term( searchTerm,
		                                                   fieldName )
	if !@maybe_proc.nil? && searchTerm.nil?
		dispatch_get_plural_by_query_block
	elsif @maybe_proc.nil? && ( !( searchTerm.nil? && fieldName.nil? ) )
		@symbol = :getFiltered
		@args = [ @domain_class.name, searchTerm, fieldName ]
	else
		raise( ArgumentError,
		 	     "Shouldn't send both a query block and a search term",
		       caller )
	end
end

#dispatch_get_singular ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 78

def dispatch_get_singular
	objectType = DomainObject.
	             getObjectTypeFromString( method_name_after_get )
	if @orig_args[0].class <= Integer
		@symbol = :get
		@args = [ objectType, @orig_args[0] ]
	elsif @orig_args[0].class <= DomainObject
		@symbol = :getMapObject
		@args = [ objectType, @orig_args[0], @orig_args[1] ]
	end
end

#method_name_after_get ⇒ Object 



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# File 'lib/lafcadio/objectStore.rb', line 90

def method_name_after_get
	@orig_method.id2name =~ /^get(.*)$/
	$1
end

#raise_no_method_error ⇒ Object

Raises:

  • (NoMethodError) 


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# File 'lib/lafcadio/objectStore.rb', line 95

def raise_no_method_error
	raise( NoMethodError, "undefined method '#{ @methodName }'", caller )
end