Method: TDiary::IO::PStore#transaction

Defined in:
lib/tdiary/io/pstore.rb

#transaction(date) ⇒ Object

block must be return boolean which dirty diaries.



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# File 'lib/tdiary/io/pstore.rb', line 19

def transaction( date )
	diaries = {}
	filename = date.strftime( "#{@data_path}%Y%m" )
	begin
		PStore::new( filename ).transaction do |db|
			dirty = false
			if db.root?( 'diary' ) then
				diaries.update( db['diary'] )
			end
			dirty = yield( diaries ) if iterator?
			if dirty != TDiary::TDiaryBase::DIRTY_NONE then
				db['diary'] = diaries
			else
				db.abort
			end
		end
	rescue PStore::Error, NameError, Errno::EACCES
		raise PermissionError::new( "make your @data_path to writable via httpd. #$!" )
	end
	begin
		File::delete( filename ) if diaries.empty?
	rescue Errno::ENOENT
	end
	return diaries
end