ets-labs/python-dependency-injector
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0.0.2 version

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Roman Mogilatov 2015-01-10 14:51:30 +02:00
parent 5b9723c530
commit 2a29c43115
2 changed files with 15 additions and 14 deletions
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27
README.md
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@ -11,7 +11,7 @@ Example:
Concept example of objects catalogs. Concept example of objects catalogs.
""" """
import objects from objects import Catalog, Singleton, NewInstance, InitArg, Attribute
import sqlite3 import sqlite3
@ -28,29 +28,30 @@ class B(object):
# Catalog of objects providers. # Catalog of objects providers.
class Catalog(objects.Catalog): class AppCatalog(Catalog):
""" """
Objects catalog. Objects catalog.
""" """
database = objects.Singleton(provides=sqlite3.Connection, database = Singleton(sqlite3.Connection,
database='example.db') InitArg('database', ':memory:'),
Attribute('row_factory', sqlite3.Row))
""" :type: (objects.Provider) -> sqlite3.Connection """ """ :type: (objects.Provider) -> sqlite3.Connection """
object_a = objects.NewInstance(provides=A, object_a = NewInstance(A,
db=database) InitArg('db', database))
""" :type: (objects.Provider) -> A """ """ :type: (objects.Provider) -> A """
object_b = objects.NewInstance(provides=B, object_b = NewInstance(B,
a=object_a, InitArg('a', object_a),
db=database) InitArg('db', database))
""" :type: (objects.Provider) -> B """ """ :type: (objects.Provider) -> B """
# Catalog injection into consumer class. # Catalog injection into consumer class.
class Consumer(object): class Consumer(object):
catalog = Catalog(Catalog.object_a, catalog = AppCatalog(AppCatalog.object_a,
Catalog.object_b) AppCatalog.object_b)
def return_a_b(self): def return_a_b(self):
return (self.catalog.object_a(), return (self.catalog.object_a(),
@ -60,8 +61,8 @@ a1, b1 = Consumer().return_a_b()
# Catalog static provides. # Catalog static provides.
a2 = Catalog.object_a() a2 = AppCatalog.object_a()
b2 = Catalog.object_b() b2 = AppCatalog.object_b()
# Some asserts. # Some asserts.
assert a1 is not a2 assert a1 is not a2

2
VERSION
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@ -1 +1 @@
0.0.1 0.0.2