Arquitectura de Componentes de Zope ¶

Baiju M

zope.interface
zope.component
zope.component
extras_require
zope.component
zope.interface
zope.component
zope.component
$ easy_install zope.component
zope.component
zope.component
zope.interface
zope.proxy
zope.interface
zope.proxy
zope.deferredimport
zope.event
zope.deprecation
zope.component
easy_install
$ easy_install /path/to/zope.interface-3.4.x.tar.gz
$ easy_install /path/to/zope.proxy-3.4.x.tar.gz
...
$ tar zxvf /path/to/zope.interface-3.4.x.tar.gz
$ cd zope.interface-3.4.x
$ python setup.py build
$ python setup.py install
site-packages
virtualenv
zc.buildout
virtualenv
zc.buildout
zope.component
virtualenv
easy_install
$ easy_install virtualenv
$ virtualenv miev
miev
miev
zope.component
easy_install
miev/bin
$ cd miev
$ ./bin/easy_install zope.component
zope.interface
zope.component
python
miev/bin
$ ./bin/python
zc.buildout
zc.recipe.egg
zc.buildout
easy_install
buildout init
$ mkdir mibuildout
$ cd mibuildout
$ buildout init
mibuildout
[buildout]
parts =
[buildout]
parts = py

[py]
recipe = zc.recipe.egg
interpreter = python
eggs = zope.component

buildout
mibuildout/bin
mibuildout/bin
$ ./bin/buildout
$ ./bin/python
>>> huespedes_db = {} #clave: id único, valor: detalles en un diccionario

>>> def proximo_id():
...     claves = huespedes_db.keys()
...     if claves == []:
...         proximo = 1
...     else:
...         proximo = max(claves) + 1
...     return proximo

>>> def registrar_huesped(nombre, lugar):
...     huesped_id = proximo_id()
...     huespedes_db[huesped_id] = {
...     'nombre': nombre,
...     'lugar': lugar
...     }

>>> class RegistradorHuesped(object):
...
...     def registrar(self, nombre, lugar):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': nombre,
...         'lugar': lugar
...         }

>>> registradorhuesped = RegistradorHuesped()
>>> registradorhuesped.registrar("Pepito", "Pérez")

>>> class RegistradorHuesped(object):
...
...     def registrar(self, nombre, lugar, telefono):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': nombre,
...         'lugar': lugar,
...         'telefono': telefono
...         }

>>> class RegistradorHuesped(object):
...
...     def registrar(self, huesped):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class RegistradorHuespedNG(object):
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped= self.huesped
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Adaptador(object):
...
...     def __init__(self, adaptado):
...         self.adaptado = adaptado

zope.interface.Interface
>>> class Anfitrion(object):
...
...     def buenosdias(self, nombre):
...         """Le dice buenos dias a los huespedes"""
...
...         return "¡Buenos días, %s!" % nombre

>>> anfitrion = Anfitrion()
>>> anfitrion.buenosdias('Pepe')
'¡Buenos días, Pepe!'

anfitrion
Anfitrion
Anfitrion
zope.interface
>>> from zope.interface import Interface

>>> class IAnfitrion(Interface):
...
...     def buenosdias(huesped):
...         """Le dice buenos dias al huesped"""

zope.interface.Interface
I
zope.interface
>>> from zope.interface import Interface
>>> from zope.interface import Attribute

>>> class IAnfitrion(Interface):
...     """Un objeto anfitrion"""
...
...     nombre = Attribute("""Nombre del anfitrion""")
...
...     def buenosdias(huesped):
...         """Le dice buenos dias al huesped"""

IAnfitrion
nombre
buenosdias
nombre
zope.interface.Attribute
nombre
IAnfitrion
nombre
nombre
Attribute
buenosdias
self
self
nombre
buenosdias
buenosdias
anfitrion
IAnfitrion
Anfitrion
IAnfitrion
zope.interface.implements
Anfitrion
IAnfitrion
>>> from zope.interface import implements

>>> class Anfitrion(object):
...
...     implements(IAnfitrion)
...
...     nombre = u''
...
...     def buenosdias(self, huesped):
...         """Le dice buenos dias al huesped"""
...
...         return "¡Buenos dias, %s!" % huesped

implements
adapts
Anfitrion
IAnfitrion
Anfitrion
IAnfitrion
interface.implements(IAnfitrion)
>>> from zope.interface import classImplements
>>> classImplements(Anfitrion, IAnfitrion)

>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

Interface
zope.interface
Interface
IRegistrador
>>> from zope.interface import Interface
>>> from zope.interface import Attribute

>>> class IHuesped(Interface):
...
...     nombre = Attribute("Nombre del huesped")
...     lugar = Attribute("Lugar del huesped")

>>> from zope.interface import Interface

>>> class IHuespedEspecial(Interface):
...     """Un huesped especial"""

zope.interface.invariant
>>> def invariante_contactos(obj):
...
...     if not (obj.email or obj.telefono):
...         raise Exception(
...             "Al menos una información de contacto es obligatoria")

zope.interface.invariant
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import invariant

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre")
...     email = Attribute("Direccion de email")
...     telefono = Attribute("Numero de telefono")
...
...     invariant(invariante_contactos)

>>> from zope.interface import implements

>>> class Persona(object):
...     implements(IPersona)
...
...     nombre = None
...     email = None
...     telefono = None

>>> pepe = Persona()
>>> pepe.email = u"pepe@algun.sitio.com"
>>> IPersona.validateInvariants(pepe)
>>> maria = Persona()
>>> IPersona.validateInvariants(maria)
Traceback (most recent call last):
...
Exception: Al menos una información de contacto es obligatoria

zope.component
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped= self.huesped
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng')

getGlobalSiteManager
zope.component
globalSiteManager
zope.component
zope.component.globalSiteManager
registerAdapter
>>> gsm.registerAdapter(RegistradorHuespedNG, name='ng')

provideAdapter
provideUtility
zope.component
getAdapter
queryAdapter
getAdapter
ComponentLookupError
queryAdapter
>>> from zope.component import getAdapter
>>> from zope.component import queryAdapter

getAdapter
queryAdapter
>>> getAdapter(pepe, IRegistrador, 'ng') 
<RegistradorHuespedNG object at ...>
>>> queryAdapter(pepe, IRegistrador, 'ng') 
<RegistradorHuespedNG object at ...>

>>> getAdapter(pepe, IRegistrador, 'not-exists') 
Traceback (most recent call last):
...
ComponentLookupError: ...
>>> reg = queryAdapter(pepe,
...           IRegistrador, 'not-exists') 
>>> reg is None
True

getAdapter
ComponentLookupError
queryAdapter
getAdapter
ComponentLookupError
queryAdapter
>>> getAdapter(pepe, IRegistrador) 
Traceback (most recent call last):
...
ComponentLookupError: ...
>>> reg = queryAdapter(pepe, IRegistrador) 
>>> reg is None
True

>>> IRegistrador(pepe, alternate='default-output')
'default-output'

>>> IRegistrador(pepe, 'default-output')
'default-output'

>>> IRegistrador(pepe) 
Traceback (most recent call last):
...
TypeError: ('Could not adapt',
  <Huesped object at ...>,
  <InterfaceClass __builtin__.IRegistrador>)

>>> gsm.registerAdapter(RegistradorHuespedNG)

>>> IRegistrador(pepe, 'default-output') 
<RegistradorHuespedNG object at ...>

utility
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...
...     def saludar(name):
...         """Decir hola"""

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         return "Hola" + name

registerUtility
>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador)

>>> from zope.component import queryUtility
>>> from zope.component import getUtility

>>> queryUtility(ISaludador).saludar('Pepe')
'Hola Pepe'

>>> getUtility(ISaludador).saludar('Jack')
'Hola Pepe'

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador, 'new')

>>> from zope.component import queryUtility
>>> from zope.component import getUtility

>>> queryUtility(ISaludador, 'new').saludar('Juan')
'Hola Juan'

>>> getUtility(ISaludador, 'new').saludar('Juan')
'Hola Juan'

ComponentLookupError
Factory
IFactory
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IBaseDatos(Interface):
...
...     def getConexion():
...         """Devuelve el objecto conexion"""

>>> class FakeDb(object):
...
...     implements(IBaseDatos)
...
...     def getConexion(self):
...         return "conexion"

zope.component.factory.Factory
>>> from zope.component.factory import Factory

>>> factory = Factory(FakeDb, 'FakeDb')

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> from zope.component.interfaces import IFactory
>>> gsm.registerUtility(factory, IFactory, 'fakedb')

>>> from zope.component import queryUtility
>>> queryUtility(IFactory, 'fakedb')() 
<FakeDb object at ...>

>>> from zope.component import createObject
>>> createObject('fakedb') 
<FakeDb object at ...>

>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class IAdaptadoUno(Interface):
...     pass

>>> class IAdaptadoDos(Interface):
...     pass

>>> class IFuncionalidad(Interface):
...     pass

>>> class MiFuncionalidad(object):
...     implements(IFuncionalidad)
...     adapts(IAdaptadoUno, IAdaptadoDos)
...
...     def __init__(self, uno, dos):
...         self.uno = uno
...         self.dos = dos

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerAdapter(MiFuncionalidad)

>>> class Uno(object):
...     implements(IAdaptadoUno)

>>> class Dos(object):
...     implements(IAdaptadoDos)

>>> uno = Uno()
>>> dos = Dos()

>>> from zope.component import getMultiAdapter

>>> getMultiAdapter((uno,dos), IFuncionalidad) 
<MiFuncionalidad object at ...>

>>> mifuncionalidad = getMultiAdapter((uno,dos), IFuncionalidad)
>>> mifuncionalidad.uno 
<Uno object at ...>
>>> mifuncionalidad.dos 
<Dos object at ...>

>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IValidar(Interface):
...
...     def validar(ob):
...         """Determine whether the object is valid
...
...         Return a string describing a validation problem.
...         An empty string is returned to indicate that the
...         object is valid.
...         """

>>> class IDocumento(Interface):
...
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...
...     implements(IDocumento)
...
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> from zope.component import adapts

>>> class ResumenLineaSimple:
...
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if '\n' in self.doc.resumen:
...             return 'Summary should only have one line'
...         else:
...             return ''

>>> class LongitudAdecuada(object):
...
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if len(self.doc.cuerpo) < 1000:
...             return 'too short'
...         else:
...             return ''

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerSubscriptionAdapter(ResumenLineaSimple)
>>> gsm.registerSubscriptionAdapter(LongitudAdecuada)

>>> from zope.component import subscribers

>>> doc = Document("A\nDocument", "blah")
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['Summary should only have one line', 'too short']

>>> doc = Document("A\nDocument", "blah" * 1000)
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['Summary should only have one line']

>>> doc = Document("A Document", "blah")
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['too short']

>>> import datetime

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IDocumentoCreado(Interface):
...
...     doc = Attribute("El documento que fue creado")

>>> class DocumentoCreado(object):
...
...     implements(IDocumentoCreado)
...
...     def __init__(self, doc):
...         self.doc = doc

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import adapter

>>> @adapter(IDocumentoCreado)
... def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerHandler(documentoCreado)

>>> from zope.component import handle

>>> handle(DocumentCreated(doc))
>>> doc.created.__class__.__name__
'datetime'

$ easy_install "zope.component [zcml]"
<configure xmlns="http://namespaces.zope.org/zope">

<adapter
    factory=".company.EmployeeSalary"
    provides=".interfaces.ISalary"
    for=".interfaces.IEmployee"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<adapter
    factory=".company.EmployeeSalary"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<adapter
    factory=".company.EmployeeSalary"
    name="salary"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<utility
    component=".basedatos.conexion"
    provides=".interfaces.IConexion"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<utility
    component=".basedatos.conexion"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<utility
    component=".basedatos.conexion"
    name="Database Connection"
    />
<configure xmlns="http://namespaces.zope.org/zope">

<utility
    factory=".basedatos.Conexion"
    />
register*
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IA(Interface):
...     pass

>>> class IP(Interface):
...     pass

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> class AP(object):
...
...     implements(IP)
...     adapts(IA)
...
...     def __init__(self, context):
...         self.context = context

>>> class AP2(object):
...
...     implements(IP)
...     adapts(IA)
...
...     def __init__(self, context):
...         self.context = context

>>> class A(object):
...
...     implements(IA)

>>> a = A()
>>> ap = AP(a)

>>> gsm.registerAdapter(AP)

>>> getAdapter(a, IP) 
<AP object at ...>

>>> gsm.registerAdapter(AP2)

>>> getAdapter(a, IP) 
<AP2 object at ...>

includeOverrides
<includeOverrides file="overrides.zcml" />
<adapter
    provides=".interfaces.INameChooser"
    for="zope.app.container.interfaces.IWriteContainer"
    factory=".contained.NameChooser"
    />
IWriteContainer
INameChooser
IWriteContainer
zope.app.container.BTreeContainer
zope.app.folder.Folder
INameChooser
zope.location.traversing.LocationPhysicallyLocatable
zope.traversing.api
zope.app.zapi
<adapter
    factory="zope.location.traversing.LocationPhysicallyLocatable"
    />
class LocationPhysicallyLocatable(object):
    """Provide location information for location objects
    """
    zope.component.adapts(ILocation)
    zope.interface.implements(IPhysicallyLocatable)
    ...

ILocation
__parent__
__name__
__parent__
__name__
IPhysicallyLocatable
getRoot
getPath
getName
getNearestSite
getRoot
getPath
getName
getNearestSite
getPhysicalRoot
zope.size.DefaultSized
ISized
<adapter
    for="*"
    factory="zope.size.DefaultSized"
    provides="zope.size.interfaces.ISized"
    permission="zope.View"
    />
ISized
class ISized(Interface):

    def sizeForSorting():
        """Returns a tuple (basic_unit, amount)

        Used for sorting among different kinds of sized objects.
        'amount' need only be sortable among things that share the
        same basic unit."""

    def sizeForDisplay():
        """Returns a string giving the size.
        """

ISized
IZPTPage
zope.app.zptpage
zope.app.applicationcontrol.ZopeVersionUtility
<utility
    component=".zopeversion.ZopeVersionUtility"
    provides=".interfaces.IZopeVersion" />
IZopeVersion
getZopeVersion
ZopeVersionUtility
version.txt
zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPerson(Interface):
...
...     name = Attribute("Name of person")
...     email = Attribute("Email Address")

Interface
zope.component
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPerson(Interface):
...
...     name = Attribute("Name of person")
...     email = Attribute("Email Address")

>>> from zope.interface import Interface

>>> class IHost(Interface):
...
...     def goodmorning(guest):
...         """Say good morning to guest"""

zope.component
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.interface import alsoProvides

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class Persona(object):
...
...     implements(IRegistrar)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = "Pepe"
>>> pepe.colegio = "Nuevo Colegio"
>>> alsoProvides(pepe, IEstudiante)

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IEstudiante in providedBy(pepe)
True

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")
...     email = Attribute("Direccion de email")

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.interface import classImplements

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class Persona(object):
...
...     implements(IRegistrar)
...     nombre = u""
...     colegio = u""

>>> classImplements(Persona, IStudent)
>>> pepe = Persona()
>>> pepe.nombre = "Pepe"
>>> pepe.colegio = "Nuevo Colegio"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IEstudiante in providedBy(pepe)
True

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.interface import classImplementsOnly

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class Persona(object):
...
...     implements(IPersona)
...     colegio = u""

>>> classImplementsOnly(Persona, IEstudiante)
>>> pepe = Persona()
>>> pepe.colegio = "Nuevo Colegio"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(pepe)
False
>>> IEstudiante in providedBy(pepe)
True

classProvides
zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import classProvides

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class Persona(object):
...
...     classProvides(IPersona)
...     name = u"Pepe"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(Persona)
True

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> person = object()
>>> getAdapter(persona, IPersona, 'not-exists') 
Traceback (most recent call last):
...
ComponentLookupError: ...

ComponentLookupError
zope.component
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IBaseDatos(Interface):
...
...     def getConexion():
...         """Devuelve el objecto conexion"""

>>> class FakeDb(object):
...
...     implements(IBaseDatos)
...
...     def getConexion(self):
...         return "conexion"

>>> from zope.component.factory import Factory

>>> factory = Factory(FakeDb, 'FakeDb')

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> from zope.component.interfaces import IFactory
>>> gsm.registerUtility(factory, IFactory, 'fakedb')

>>> from zope.component import createObject
>>> createObject('fakedb') 
<FakeDb object at ...>

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class IPersonaInteligente(Interface):
...     pass

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = u"Pepe"
>>> pepe.colegio = "Nuevo Colegio"
>>> alsoProvides(pepe, IPersonaInteligente, IEstudiante)

>>> from zope.interface import directlyProvidedBy

>>> pepe_dp = directlyProvidedBy(pepe)
>>> IPersona in pepe_dp.interfaces()
False
>>> IEstudiante in pepe_dp.interfaces()
True
>>> IPersonaInteligente in pepe_dp.interfaces()
True

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class IPersonaInteligente(Interface):
...     pass

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = u"Pepe"
>>> pepe.colegio = "Nuevo Colegio"
>>> alsoProvides(pepe, IPersonaInteligente, IEstudiante)

>>> from zope.interface import directlyProvidedBy

>>> pepe_dp = directlyProvidedBy(pepe)
>>> IPersonaInteligente in pepe_dp.interfaces()
True
>>> IPersona in pepe_dp.interfaces()
False
>>> IEstudiante in pepe_dp.interfaces()
True
>>> from zope.interface import providedBy

>>> IPersonaInteligente in providedBy(pepe)
True

>>> from zope.interface import directlyProvides
>>> directlyProvides(pepe, IEstudiante)

>>> pepe_dp = directlyProvidedBy(pepe)
>>> IPersonaInteligente in pepe_dp.interfaces()
False
>>> IPersona in pepe_dp.interfaces()
False
>>> IEstudiante in pepe_dp.interfaces()
True

>>> IPersonaInteligente in providedBy(pepe)
False

ComponentLookupError
zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng')

>>> getAdapter(pepe, IRegistrador, 'ng') 
<RegistradorHuespedNG object at ...>

zope.component
>>> from zope.component.globalregistry import BaseGlobalComponents
>>> from zope.component import IComponentLookup
>>> sm = BaseGlobalComponents()

>>> class Context(object):
...     def __init__(self, sm):
...         self.sm = sm
...     def __conform__(self, interface):
...         if interface.isOrExtends(IComponentLookup):
...             return self.sm

>>> context = Context(sm)

>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> sm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador)

>>> from zope.component import getAdapterInContext

>>> getAdapterInContext(pepe, IRegistrador, sm) 
<RegistradorHuespedNG object at ...>

zope.component
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerAdapter(RegistradorHuespedNG, name='ng')

>>> from zope.component import getAdapters
>>> list(getAdapters((jack,), IRegistrador)) 
[(u'ng', <RegistradorHuespedNG object at ...>)]

zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         print "Hola", name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador)

>>> from zope.component import getAllUtilitiesRegisteredFor

>>> getAllUtilitiesRegisteredFor(ISaludador) 
[<Saludador object at ...>]

zope.component
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IBaseDatos(Interface):
...
...     def getConexion():
...         """Devuelve el objecto conexion"""

>>> class FakeDb(object):
...
...     implements(IBaseDatos)
...
...     def getConexion(self):
...         return "conexion"

>>> from zope.component.factory import Factory

>>> factory = Factory(FakeDb, 'FakeDb')

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> from zope.component.interfaces import IFactory
>>> gsm.registerUtility(factory, IFactory, 'fakedb')

>>> from zope.component import getFactoriesFor

>>> list(getFactoriesFor(IBaseDatos))
[(u'fakedb', <Factory for <class 'FakeDb'>>)]

zope.component
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IBaseDatos(Interface):
...
...     def getConexion():
...         """Devuelve el objecto conexion"""

>>> class FakeDb(object):
...
...     implements(IBaseDatos)
...
...     def getConexion(self):
...         return "conexion"

>>> from zope.component.factory import Factory

>>> factory = Factory(FakeDb, 'FakeDb')

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> from zope.component.interfaces import IFactory
>>> gsm.registerUtility(factory, IFactory, 'fakedb')

>>> from zope.component import getFactoryInterfaces

>>> getFactoryInterfaces('fakedb')
<implementedBy __builtin__.FakeDb>

zope.component
>>> from zope.component import getGlobalSiteManager
>>> from zope.component import globalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm is globalSiteManager
True

zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class IAdaptadoUno(Interface):
...     pass

>>> class IAdaptadoDos(Interface):
...     pass

>>> class IFuncionalidad(Interface):
...     pass

>>> class MiFuncionalidad(object):
...     implements(IFuncionalidad)
...     adapts(IAdaptadoUno, IAdaptadoDos)
...
...     def __init__(self, uno, dos):
...         self.uno = uno
...         self.dos = dos

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerAdapter(MiFuncionalidad)

>>> class Uno(object):
...     implements(IAdaptadoUno)

>>> class Dos(object):
...     implements(IAdaptadoDos)

>>> uno = Uno()
>>> dos = Dos()

>>> from zope.component import getMultiAdapter

>>> getMultiAdapter((uno,dos), IFuncionalidad) 
<MiFuncionalidad object at ...>

>>> mifuncionalidad = getMultiAdapter((uno,dos), IFuncionalidad)
>>> mifuncionalidad.uno 
<Uno object at ...>
>>> mifuncionalidad.dos 
<Dos object at ...>

zope.component
>>> from zope.component.globalregistry import BaseGlobalComponents
>>> from zope.component import IComponentLookup
>>> sm = BaseGlobalComponents()

>>> class Context(object):
...     def __init__(self, sm):
...         self.sm = sm
...     def __conform__(self, interface):
...         if interface.isOrExtends(IComponentLookup):
...             return self.sm

>>> context = Context(sm)

>>> from zope.component import getSiteManager

>>> lsm = getSiteManager(context)
>>> lsm is sm
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> sm = getSiteManager()
>>> gsm is sm
True

zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         print "Hola", name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador)

>>> from zope.component import getUtilitiesFor

>>> list(getUtilitiesFor(ISaludador)) 
[(u'', <Saludador object at ...>)]

ComponentLookupError
zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         return "Hola" + name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador)

>>> from zope.component import getUtility

>>> getUtility(ISaludador).saludar('Jack')
'Hola Pepe'

zope.component
>>> import datetime

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IDocumentoCreado(Interface):
...     doc = Attribute("El documento que fue creado")

>>> class DocumentoCreado(object):
...     implements(IDocumentoCreado)
...
...     def __init__(self, doc):
...         self.doc = doc

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import adapter

>>> @adapter(IDocumentoCreado)
... def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerHandler(documentoCreado)

>>> from zope.component import handle

>>> handle(DocumentCreated(doc))
>>> doc.created.__class__.__name__
'datetime'

zope.interface
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         print "Hola", name

>>> from zope.interface import implementedBy
>>> implementedBy(Saludador)
<implementedBy __builtin__.Greeter>

>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IPersona(Interface):
...     nombre = Attribute("Nombre de persona")

>>> class IEspecial(Interface):
...     pass

>>> class Persona(object):
...     implements(IPersona)
...     nombre = u""

>>> from zope.interface import classImplements
>>> classImplements(Person, IEspecial)

>>> from zope.interface import implementedBy

To get a list of all interfaces implemented by that class::

>>> [x.__name__ for x in implementedBy(Persona)]
['IPersona', 'IEspecial']

zope.interface
>>> from zope.interface import implementer
>>> class IPrueba(Interface):
...     pass
>>> class Prueba(object):
...     implements(IPrueba)

>>> @implementer(IPrueba)
... def creadorprueba():
...     prueba = Prueba()
...     return prueba
>>> list(implementedBy(creadorprueba))
[<InterfaceClass __builtin__.IPrueba>]

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = "Pepe"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(pepe)
True

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.interface import implementsOnly

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> class NuevaPersona(Persona):
...     implementsOnly(IEstudiante)
...     colegio = u""

>>> pepe = NuevaPersona()
>>> pepe.colegio = "Nuevo Colegio"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(pepe)
False
>>> IEstudiante in providedBy(pepe)
True

Interface
zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")
...     email = Attribute("Direccion de email")

>>> from zope.interface import Interface

>>> class IAnfitrion(Interface):
...
...     def buenosdias(huesped):
...         """Le dice buenos dias al huesped"""

directlyProvides
zope.interface
moduleProvides(IComponentArchitecture,
               IComponentRegistrationConvenience)

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.interface import classImplements

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class IEstudiante(Interface):
...
...     colegio = Attribute("Nombre de colegio")

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = "Pepe"
>>> pepe.colegio = "Nuevo Colegio"
>>> directlyProvides(pepe, IEstudiante)

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(pepe)
True
>>> IEstudiante in providedBy(pepe)
True
>>> from zope.interface import noLongerProvides
>>> noLongerProvides(pepe, IEstudiante)
>>> IPersona in providedBy(pepe)
True
>>> IEstudiante in providedBy(pepe)
False

zope.interface
>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IPersona(Interface):
...
...     nombre = Attribute("Nombre de persona")

>>> class Persona(object):
...
...     implements(IPersona)
...     nombre = u""

>>> pepe = Persona()
>>> pepe.nombre = "Pepe"

Usted puede probar con esto: ::

>>> from zope.interface import providedBy
>>> IPersona in providedBy(pepe)
True

>>> from zope.interface import Attribute
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class IPersona(Interface):
...     nombre = Attribute("Nombre de persona")

>>> class IEspecial(Interface):
...     pass

>>> class Persona(object):
...     implements(IPersona)
...     nombre = u""

>>> from zope.interface import classImplements
>>> classImplements(Person, IEspecial)
>>> from zope.interface import providedBy
>>> pepe = Persona()
>>> pepe.nombre = "Pepe"

To get a list of all interfaces provided by that object::

>>> [x.__name__ for x in providedBy(pepe)]
['IPersona', 'IEspecial']

zope.component
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng')

>>> queryAdapter(pepe, IRegistrador, 'ng') 
<RegistradorHuespedNG object at ...>

interface(object, default)

zope.component
>>> from zope.component.globalregistry import BaseGlobalComponents
>>> from zope.component import IComponentLookup
>>> sm = BaseGlobalComponents()

>>> class Context(object):
...     def __init__(self, sm):
...         self.sm = sm
...     def __conform__(self, interface):
...         if interface.isOrExtends(IComponentLookup):
...             return self.sm

>>> context = Context(sm)

>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> sm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador)

>>> from zope.component import queryAdapterInContext

>>> queryAdapterInContext(pepe, IRegistrador, sm) 
<RegistradorHuespedNG object at ...>

zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class IAdaptadoUno(Interface):
...     pass

>>> class IAdaptadoDos(Interface):
...     pass

>>> class IFuncionalidad(Interface):
...     pass

>>> class MiFuncionalidad(object):
...     implements(IFuncionalidad)
...     adapts(IAdaptadoUno, IAdaptadoDos)
...
...     def __init__(self, uno, dos):
...         self.uno = uno
...         self.dos = dos

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerAdapter(MiFuncionalidad)

>>> class Uno(object):
...     implements(IAdaptadoUno)

>>> class Dos(object):
...     implements(IAdaptadoDos)

>>> uno = Uno()
>>> dos = Dos()

>>> from zope.component import queryMultiAdapter

>>> getMultiAdapter((uno,dos), IFuncionalidad) 
<MiFuncionalidad object at ...>

>>> myfunctionality = queryMultiAdapter((uno,dos), IFuncionalidad)
>>> mifuncionalidad.uno 
<Uno object at ...>
>>> mifuncionalidad.dos 
<Dos object at ...>

zope.component
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         return "Hola" + name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, ISaludador)

>>> from zope.component import queryUtility

>>> queryUtility(ISaludador).saludar('Pepe')
'Hola Pepe'

zope.component - IComponentRegistry
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng')

Usted puede probar con esto: ::

>>> queryAdapter(pepe, IRegistrador, 'ng') 
<RegistradorHuespedNG object at ...>

zope.component - IComponentRegistry
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng2')

>>> reg_adapter = list(gsm.registeredAdapters())
>>> 'ng2' in [x.name for x in reg_adapter]
True

zope.component - IComponentRegistry
>>> import datetime

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IDocumentoCreado(Interface):
...     doc = Attribute("El documento que fue creado")

>>> class DocumentoCreado(object):
...     implements(IDocumentoCreado)
...
...     def __init__(self, doc):
...         self.doc = doc

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import adapter

>>> @adapter(IDocumentoCreado)
... def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerHandler(documentoCreado, info='ng3')

>>> reg_adapter = list(gsm.registeredHandlers())
>>> 'ng3' in [x.info for x in reg_adapter]
True

>>> gsm.registerHandler(documentoCreado, name='ng4')
Traceback (most recent call last):
...
TypeError: Named handlers are not yet supported

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IValidar(Interface):
...     def validar(ob):
...         """Determine whether the object is valid
...
...         Return a string describing a validation problem.
...         An empty string is returned to indicate that the
...         object is valid.
...         """

>>> class IDocumento(Interface):
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...     implements(IDocumento)
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> from zope.component import adapts

>>> class LongitudAdecuada(object):
...
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if len(self.doc.cuerpo) < 1000:
...             return 'too short'
...         else:
...             return ''

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerSubscriptionAdapter(LongitudAdecuada, info='ng4')

>>> reg_adapter = list(gsm.registeredSubscriptionAdapters())
>>> 'ng4' in [x.info for x in reg_adapter]
True

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         print "Hola", name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar, info='ng5')

>>> reg_adapter = list(gsm.registeredUtilities())
>>> 'ng5' in [x.info for x in reg_adapter]
True

zope.component - IComponentRegistry
zope.component
>>> import datetime

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IDocumentoCreado(Interface):
...     doc = Attribute("El documento que fue creado")

>>> class DocumentoCreado(object):
...     implements(IDocumentoCreado)
...
...     def __init__(self, doc):
...         self.doc = doc

>>> def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import adapter

>>> @adapter(IDocumentoCreado)
... def documentoCreado(event):
...     event.doc.created = datetime.datetime.utcnow()

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerHandler(documentoCreado)

>>> from zope.component import handle

>>> handle(DocumentCreated(doc))
>>> doc.created.__class__.__name__
'datetime'

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IValidar(Interface):
...     def validar(ob):
...         """Determine whether the object is valid
...
...         Return a string describing a validation problem.
...         An empty string is returned to indicate that the
...         object is valid.
...         """

>>> class IDocumento(Interface):
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...     implements(IDocumento)
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> from zope.component import adapts

>>> class LongitudAdecuada(object):
...
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if len(self.doc.cuerpo) < 1000:
...             return 'too short'
...         else:
...             return ''

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerSubscriptionAdapter(LongitudAdecuada)

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         print "Hola", name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar)

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IValidar(Interface):
...     def validar(ob):
...         """Determine whether the object is valid
...
...         Return a string describing a validation problem.
...         An empty string is returned to indicate that the
...         object is valid.
...         """

>>> class IDocumento(Interface):
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...     implements(IDocumento)
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> from zope.component import adapts

>>> class ResumenLineaSimple:
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if '\n' in self.doc.resumen:
...             return 'Summary should only have one line'
...         else:
...             return ''

>>> class LongitudAdecuada(object):
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if len(self.doc.cuerpo) < 1000:
...             return 'too short'
...         else:
...             return ''

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerSubscriptionAdapter(ResumenLineaSimple)
>>> gsm.registerSubscriptionAdapter(LongitudAdecuada)

>>> from zope.component import subscribers

>>> doc = Document("A\nDocument", "blah")
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['Summary should only have one line', 'too short']

>>> doc = Document("A\nDocument", "blah" * 1000)
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['Summary should only have one line']

>>> doc = Document("A Document", "blah")
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['too short']

zope.component - IComponentRegistry
>>> from zope.interface import Attribute
>>> from zope.interface import Interface

>>> class IRegistrador(Interface):
...     """Un registrador registrará los detalles de un objeto"""
...
...     def registrar():
...         """Registrar detalles de un objeto"""
...

>>> from zope.interface import implements
>>> from zope.component import adapts

>>> class RegistradorHuespedNG(object):
...
...     implements(IRegistrar)
...     adapts(IHuesped)
...
...     def __init__(self, huesped):
...         self.huesped = huesped
...
...     def registrar(self):
...         huesped_id = proximo_id()
...         huespedes_db[huesped_id] = {
...         'nombre': huesped.nombre,
...         'lugar': huesped.lugar,
...         'telefono': huesped.telefono
...         }

>>> class Huesped(object):
...
...     implements(IHuesped)
...
...     def __init__(self, nombre, lugar):
...         self.nombre = nombre
...         self.lugar = lugar

>>> pepe = Huesped("Pepe", "España")
>>> pepe_registradorhuesped = RegistradorHuespedNG(pepe)

>>> IRegistrador.providedBy(pepe_registradorhuesped)
True

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()
>>> gsm.registerAdapter(RegistradorHuespedNG,
...                     (IHuesped,), IRegistrador, 'ng6')

Usted puede probar con esto: ::

>>> queryAdapter(pepe, IRegistrador, 'ng6') 
<RegistradorHuespedNG object at ...>

Now unregister:

>>> gsm.unregisterAdapter(RegistradorHuespedNG, name='ng6')
True

After unregistration:

>>> print queryAdapter(pepe, IRegistrador, 'ng6')
None

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IDocumento(Interface):
...
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...
...     implements(IDocumento)
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> doc = Document("A\nDocument", "blah")

>>> class IDocumentoConsultado(Interface):
...     doc = Attribute("The document that was accessed")

>>> class DocumentoConsultado(object):
...     implements(IDocumentoConsultado)
...
...     def __init__(self, doc):
...         self.doc = doc
...         self.doc.count = 0

>>> from zope.component import adapter

>>> @adapter(IDocumentAccessed)
... def documentAccessed(event):
...     event.doc.count = event.doc.count + 1

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerHandler(documentAccessed)

>>> from zope.component import handle

>>> handle(DocumentAccessed(doc))
>>> doc.count
1

Now unregister:

>>> gsm.unregisterHandler(documentAccessed)
True

After unregistration:

>>> handle(DocumentAccessed(doc))
>>> doc.count
0

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import Attribute
>>> from zope.interface import implements

>>> class IValidar(Interface):
...     def validar(ob):
...         """Determine whether the object is valid
...
...         Return a string describing a validation problem.
...         An empty string is returned to indicate that the
...         object is valid.
...         """

>>> class IDocumento(Interface):
...     resumen = Attribute("Resumen del Documento")
...     cuerpo = Attribute("Texto del Documento")

>>> class Documento(object):
...     implements(IDocumento)
...     def __init__(self, resumen, cuerpo):
...         self.resumen, self.cuerpo = resumen, cuerpo

>>> from zope.component import adapts

>>> class LongitudAdecuada(object):
...
...     adapts(IDocumento)
...     implements(IValidar)
...
...     def __init__(self, doc):
...         self.doc = doc
...
...     def validar(self):
...         if len(self.doc.cuerpo) < 1000:
...             return 'too short'
...         else:
...             return ''

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> gsm.registerSubscriptionAdapter(LongitudAdecuada)

>>> from zope.component import subscribers

>>> doc = Document("A\nDocument", "blah")
>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
['too short']

Now unregister:

>>> gsm.unregisterSubscriptionAdapter(LongitudAdecuada)
True

After unregistration:

>>> [adapter.validate()
...  for adapter in subscribers([doc], IValidar)
...  if adapter.validate()]
[]

zope.component - IComponentRegistry
>>> from zope.interface import Interface
>>> from zope.interface import implements

>>> class ISaludador(Interface):
...     def saludar(name):
...         "decir hola"

>>> class Saludador(object):
...
...     implements(ISaludador)
...
...     def saludar(self, name):
...         return "Hola" + name

>>> from zope.component import getGlobalSiteManager
>>> gsm = getGlobalSiteManager()

>>> saludar = Saludador()
>>> gsm.registerUtility(saludar)

>>> queryUtility(ISaludador).saludar('Pepe')
'Hola Pepe'

Now unregister:

>>> gsm.unregisterUtility(greet)
True

After unregistration:

>>> print queryUtility(ISaludador)
None

Author:	Baiju M
Version:	0.5.6
Printed Book:	http://www.lulu.com/content/1561045
PDF en linea:	http://www.muthukadan.net/docs/zca.pdf
Traductor(es):	Lorenzo Gil Sanchez <lgs@sicem.biz> ; Leonardo J. Caballero G. <leonardocaballero@gmail.com> 2011
URL en español:	http://www.muthukadan.net/docs/zca-es.pdf

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