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|
Interface Registration APIs
===========================
.. testsetup::
from zope.component.testing import setUp
setUp()
Registering Interfaces as Utilities
-----------------------------------
.. autofunction:: zope.component.interface.provideInterface
We can register a given interface with the global site manager as a utility.
First, declare a new interface, which itself provides only the core API,
:class:`zope.interface.interfaces.IInterface`:
.. doctest::
>>> from zope.interface import Interface
>>> from zope.interface.interfaces import IInterface
>>> from zope.component.tests.examples import ITestType
>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> class IDemo(Interface):
... pass
>>> IInterface.providedBy(IDemo)
True
>>> ITestType.providedBy(IDemo)
False
>>> list(gsm.getUtilitiesFor(ITestType))
[]
Now, register ``IDemo`` as providing ``ITestType``
.. doctest::
>>> from zope.component.interface import provideInterface
>>> provideInterface('', IDemo, ITestType)
>>> ITestType.providedBy(IDemo)
True
>>> interfaces = list(gsm.getUtilitiesFor(ITestType))
>>> [iface.__name__ for (name, iface) in interfaces]
['IDemo']
We can register ``IDemo`` as providing more than one interface:
.. doctest::
>>> class IOtherType(IInterface):
... pass
>>> provideInterface('', IDemo, IOtherType)
>>> ITestType.providedBy(IDemo)
True
>>> IOtherType.providedBy(IDemo)
True
>>> interfaces = list(gsm.getUtilitiesFor(ITestType))
>>> [iface.__name__ for (name, iface) in interfaces]
['IDemo']
>>> interfaces = list(gsm.getUtilitiesFor(IOtherType))
>>> [iface.__name__ for (name, iface) in interfaces]
['IDemo']
.. testcleanup::
from zope.component.testing import tearDown
tearDown()
.. autofunction:: zope.component.interface.getInterface
.. doctest::
>>> from zope.interface import Interface
>>> from zope.component.interface import getInterface
>>> from zope.component.tests.examples import ITestType
>>> from zope.component.tests.examples import IGI
>>> IInterface.providedBy(IGI)
True
>>> ITestType.providedBy(IGI)
False
>>> getInterface(None, 'zope.component.tests.examples.IGI')
Traceback (most recent call last):
...
ComponentLookupError: zope.component.tests.examples.interface.IGI
>>> provideInterface('', IGI, ITestType)
>>> ITestType.providedBy(IGI)
True
>>> iface = getInterface(None,
... 'zope.component.tests.examples.IGI')
>>> iface.__name__
'IGI'
.. testcleanup::
from zope.component.testing import tearDown
tearDown()
.. autofunction:: zope.component.interface.queryInterface
.. doctest::
>>> from zope.interface import Interface
>>> from zope.interface.interfaces import IInterface
>>> from zope.component.interface import queryInterface
>>> from zope.component.tests.examples import ITestType
>>> from zope.component.tests.examples import IQI
>>> IInterface.providedBy(IQI)
True
>>> ITestType.providedBy(IQI)
False
>>> queryInterface('zope.component.tests.examples.IQI') is None
True
>>> provideInterface('', IQI, ITestType)
>>> ITestType.providedBy(IQI)
True
>>> iface = queryInterface('zope.component.tests.examples.IQI')
>>> iface.__name__
'IQI'
.. testcleanup::
from zope.component.testing import tearDown
tearDown()
.. autofunction:: zope.component.interface.searchInterface
.. doctest::
>>> from zope.interface import Interface
>>> from zope.interface.interfaces import IInterface
>>> from zope.component.interface import searchInterface
>>> from zope.component.tests.examples import ITestType
>>> from zope.component.tests.examples import ISI
>>> IInterface.providedBy(ISI)
True
>>> ITestType.providedBy(ISI)
False
>>> searchInterface(None, 'zope.component.tests.examples.ISI')
[]
>>> provideInterface('', ISI, ITestType)
>>> ITestType.providedBy(ISI)
True
>>> searchInterface(None, 'zope.component.tests.examples.ISI') == [ISI]
True
.. testcleanup::
from zope.component.testing import tearDown
tearDown()
.. autofunction:: zope.component.interface.searchInterfaceIds
.. doctest::
>>> from zope.interface import Interface
>>> from zope.interface.interfaces import IInterface
>>> from zope.component.interface import searchInterfaceIds
>>> from zope.component.tests.examples import ITestType
>>> from zope.component.tests.examples import ISII
>>> IInterface.providedBy(ISII)
True
>>> ITestType.providedBy(ISII)
False
>>> searchInterfaceIds(None, 'zope.component.tests.examples.ISII')
[]
>>> provideInterface('', ISII, ITestType)
>>> ITestType.providedBy(ISII)
True
>>> [str(x) for x in searchInterfaceIds(None, 'zope.component.tests.examples.ISII')]
['zope.component.tests.examples.ISII']
.. testcleanup::
from zope.component.testing import tearDown
tearDown()
|
