adierebel / Python Fluent Interface Chain

13 Sep 2018 at 07:32

1	class Fluent:
2	def __init__(self, cache=None):
3	self._cache = cache or []
4
5	# Build the cache, and handle special cases
6	def _(self, name):
7	# Enables method chaining
8	return Fluent(self._cache + [name])
9
10	# Reflection
11	def __getattr__(self, name):
12	return self._(name)
13
14	# Set name
15	def _name(self, name):
16	return self._(name)
17
18	# Final method call
19	def execute(self):
20	return " ".join(self._cache)
21
22	# New object
23	fluent = Fluent()
24
25	# 'is' is a Python reserved word
26	result = fluent.hello.my.name._('is')._name('Adierebel').execute()
27	print(result)
28
29	# API example
30	api = fluent.get.user.info.execute()
31	print(api)

1	class Example(object):
2	def foo(self):
3	print("this is foo")
4	def bar(self):
5	print("this is bar")
6	def __getattr__(self, name):
7	def method(*args):
8	print("tried to handle unknown method " + name)
9	if args:
10	print("it had arguments: " + str(args))
11	return method
12
13	example = Example()
14
15	example.foo() # prints "this is foo"
16	example.bar() # prints "this is bar"
17	example.grill() # prints "tried to handle unknown method grill"
18	example.ding("dong") # prints "tried to handle unknown method ding"
19	# prints "it had arguments: ('dong',)"

Comments (0)