Python interfaces.ILinkIntegrityInfo類代碼示例

def on_removed_resource(resource, event):
    request = getattr(resource, 'REQUEST', None)

    if request is None:
        return

    info = ILinkIntegrityInfo(request)

    if info.integrityCheckingEnabled():
        if info.getIntegrityBreaches():
            return

        # info.isConfirmedItem simply does not work
        # it is really awful to have to deal with these internals

        if 'form.submitted' not in request:
            return

        if 'form.button.Cancel' in request:
            return

        if getattr(request, 'link_integrity_events_counter', 0) != 2:
            return

    log.info('extinguising resource {}'.format(resource.uuid()))
    db.extinguish_resource(resource.uuid())

def isLinked(obj):
    """ check if the given content object is linked from another one
        WARNING: don't use this function in your code!!
            it is a helper for the link integrity code and will potentially
            abort the ongoing transaction, giving you unexpected results...
    """
    # first check to see if link integrity handling has been enabled at all
    # and if so, if the removal of the object was already confirmed, i.e.
    # while replaying the request;  unfortunately this makes it necessary
    # to import from plone.app.linkintegrity here, hence the try block...
    try:
        from plone.app.linkintegrity.interfaces import ILinkIntegrityInfo
        info = ILinkIntegrityInfo(obj.REQUEST)
    except (ImportError, TypeError):
        # if p.a.li isn't installed the following check can be cut short...
        return False
    if not info.integrityCheckingEnabled():
        return False
    if info.isConfirmedItem(obj):
        return True
    # otherwise, when not replaying the request already, it is tried to
    # delete the object, making it possible to find out if it was referenced,
    # i.e. in case a link integrity exception was raised
    linked = False
    parent = obj.aq_inner.aq_parent
    try:
        parent.manage_delObjects(obj.getId())
    except OFS.ObjectManager.BeforeDeleteException, e:
        linked = True

    def is_relevant(self):
        request = self.obj.REQUEST
        if getattr(request, '_activity_reported', False):
            return False
        else:
            setattr(request, '_activity_reported', True)

        info = ILinkIntegrityInfo(request)
        if not info.integrityCheckingEnabled():
            return True

        elif info.isConfirmedItem(self.obj):
            return True

        if request.URL.endswith('/sl_delete_object'):
            return True

        if request.has_key('form.submitted') and \
                request.URL.endswith('/delete_confirmation'):
            return True

        if request.URL.endswith('/folder_delete'):
            return True

        if request.has_key('form.button.Cancel'):
            return True

        return False

def plonegroup_contact_transition(contact, event):
    """
        React when a IPloneGroupContact transition is done
    """
    if event.transition and event.transition.id == 'deactivate':
        # check if the transition is selected
        registry = getUtility(IRegistry)
        pp = api.portal.get_tool('portal_properties')
        errors = []
        if contact.UID() in registry[ORGANIZATIONS_REGISTRY]:
            errors.append(_('This contact is selected in configuration'))
        elif pp.site_properties.enable_link_integrity_checks:
            search_value_in_objects(contact, contact.UID(), p_types=[], type_fields={})
            storage = ILinkIntegrityInfo(contact.REQUEST)
            breaches = storage.getIntegrityBreaches()
            if contact in breaches:
                errors.append(_("This contact is used in following content: ${items}",
                                mapping={'items': ', '.join(['<a href="%s" target="_blank">%s</a>'
                                                             % (i.absolute_url(), i.Title())
                                                             for i in breaches[contact]])}))
        if errors:
            smi = IStatusMessage(contact.REQUEST)
            smi.addStatusMessage(_('You cannot deactivate this item !'), type='error')
            smi.addStatusMessage(errors[0], type='error')
            view_url = getMultiAdapter((contact, contact.REQUEST), name=u'plone_context_state').view_url()
            # contact.REQUEST['RESPONSE'].redirect(view_url)
            raise Redirect(view_url)

    def delete(self):
        uids = self.request['uids']
        ctool = getToolByName(self.context, 'portal_catalog')
        mtool = getToolByName(self.context, 'portal_membership')
        brains = ctool(UID=uids)
        fails = []
        success = 0
        integrity_info = ILinkIntegrityInfo(self.request)
        for b in brains:
            obj = b.getObject()
            integrity_info.addDeletedItem(obj)
            if not mtool.checkPermission('Delete objects', obj):
                fails.append(translate(_(u"Unauthorized: ${path}",
                                         mapping={'path': b.getPath()}),
                                       context=self.request))
            else:
                try:
                    parent = obj.getParentNode()
                    parent.manage_delObjects([obj.getId()])
                except LinkIntegrityNotificationException:
                    pass
                finally:
                    success += 1

        IStatusMessage(self.request).add(_("msg_objects_deleted",
                                           default="${num} object(s) deleted",
                                           mapping={'num': success}))
        if fails:
            IStatusMessage(self.request).add(
                      _("msg_objects_delete_failed",
                        default="${num} object(s) were not deleted : ${fails}",
                        mapping={'num': len(fails), 'fails': ", ".join(fails)}),
                      'error')

 def test_plonegroupOrganizationRemoved_1(self):
     """ We cannot remove an organization selected in settings and used in an object """
     view = self.portal.restrictedTraverse(
         '{0}/{1}/department1/delete_confirmation'.format(DEFAULT_DIRECTORY_ID, PLONEGROUP_ORG))
     self.assertRaises(LinkIntegrityNotificationException, view.render)
     storage = ILinkIntegrityInfo(view.REQUEST)
     breaches = storage.getIntegrityBreaches()
     self.assertIn(self.contacts[0], breaches)
     self.assertSetEqual(breaches[self.contacts[0]], set([self.portal['acontent1']]))

 def integrityBreaches(self):
     info = ILinkIntegrityInfo(self.request).getIntegrityBreaches()
     byTitle = lambda a, b: cmp(a.Title(), b.Title())
     breaches = []
     for target, sources in info.items():
         breaches.append({
             'title': target.Title(),
             'type': target.getPortalTypeName(),
             'url': target.absolute_url(),
             'sources': sorted(sources, byTitle),
         })
     return sorted(breaches, lambda a, b: cmp(a['title'], b['title']))

 def test_delete_content_succeeds_with_link_integrity_breach(self):
     doc2 = self.portal[self.portal.invokeFactory(
         'Document',
         id='doc2',
         title='My Document',
     )]
     from plone.app.linkintegrity.interfaces import ILinkIntegrityInfo
     info = ILinkIntegrityInfo(self.layer['request'])
     info.addBreach(doc2, self.doc1)
     service = self.traverse('/plone/doc1', method='DELETE')
     service()
     self.assertEqual(204, info.context.response.status)
     self.assertNotIn('doc1', self.portal.objectIds())

def referenceRemoved(obj, event):
    """ store information about the removed link integrity reference """
    assert IReference.providedBy(obj)
    assert obj is event.object          # just making sure...
    if not obj.relationship in get_protected_relationships():
        return                          # skip for other removed references
    # if the object the event was fired on doesn't have a `REQUEST` attribute
    # we can safely assume no direct user action was involved and therefore
    # never raise a link integrity exception...
    request = aq_get(obj, 'REQUEST', None)
    if not request:
        return
    storage = ILinkIntegrityInfo(request)
    storage.addBreach(obj.getSourceObject(), obj.getTargetObject())

def delete_integrity(context, event):
    request = getRequest()
    if request is not None:
        path = context.getPhysicalPath()
        for base in _ignorepaths(request):
            if tuple(path[:len(base)]) == base:
                # allow deletion of Plone site marked by before_site_delete()
                return
        used_by = InUseBy(context, request)
        if len(used_by) > 0:
            info = ILinkIntegrityInfo(request)
            for brain in used_by._brainmap.values():
                info.addBreach(brain._unrestrictedGetObject(), context)
            raise LinkIntegrityNotificationException(context)

 def integrityBreaches(self):
     info = ILinkIntegrityInfo(self.request).getIntegrityBreaches()
     byTitle = lambda a, b: cmp((a.Title(), a.getId()), (b.Title(), b.getId()))
     breaches = []
     for target, sources in info.items():
         breaches.append(
             {
                 "title": target.Title(),
                 "type": target.getPortalTypeName(),
                 "type_title": self.getPortalTypeTitle(target),
                 "url": target.absolute_url(),
                 "sources": sorted(sources, byTitle),
             }
         )
     return sorted(breaches, lambda a, b: cmp(a["title"], b["title"]))

def handle_remove_event(obj, event):
    """If an object will be removed on the senders instance, we need to create a
    publisher delete job.
    """
    # the event is notified for every subobject, but we only want to check
    # the top object which the users tries to delete
    if obj is not event.object:
        return

    workflow = get_workflow_name(obj)
    if not workflow or workflow not in config.PUBLISHING_WORKFLOWS:
        # we don't have a workflow or the workflow does not publish ever - so we
        # don't need to delete anything on the receiver.
        return

    # the event handler is fired twice (once from link integrity check), but
    # we just want to do our stuff once. And we should only do it if the user
    # already did confirm.
    do_delete = False
    request = getattr(obj, 'REQUEST', None)
    if request is None:
        do_delete = True
    else:
        info = ILinkIntegrityInfo(request)
        if not info.integrityCheckingEnabled():
            do_delete = True
        elif info.isConfirmedItem(obj):
            do_delete = True

    if request.URL.endswith('/sl_delete_object'):
        do_delete = True
    if request.has_key('form.submitted') and \
            request.URL.endswith('/delete_confirmation'):
        do_delete = True
    if request.URL.endswith('/folder_delete'):
        do_delete = True
    if request.has_key('form.button.Cancel'):
        do_delete = True

    # register the job
    if do_delete:
        obj.restrictedTraverse('@@publisher.delete')()

def isLinked(obj):
    """ check if the given content object is linked from another one

        WARNING: this function can be time consuming !!

            It deletes the object in a subtransaction that is rollbacked.
            In other words, the object is kept safe.

            Nevertheless, this implies that it also deletes recursively
            all object's subobjects and references, which can be very
            expensive.
    """
    # first check to see if link integrity handling has been enabled at all
    # and if so, if the removal of the object was already confirmed, i.e.
    # while replaying the request;  unfortunately this makes it necessary
    # to import from plone.app.linkintegrity here, hence the try block...
    try:
        from plone.app.linkintegrity.interfaces import ILinkIntegrityInfo

        info = ILinkIntegrityInfo(obj.REQUEST)
    except (ImportError, TypeError):
        # if p.a.li isn't installed the following check can be cut short...
        return False
    if not info.integrityCheckingEnabled():
        return False
    if info.isConfirmedItem(obj):
        return True
    # otherwise, when not replaying the request already, it is tried to
    # delete the object, making it possible to find out if it was referenced,
    # i.e. in case a link integrity exception was raised
    linked = False
    parent = obj.aq_inner.aq_parent
    try:
        savepoint = transaction.savepoint()
        parent.manage_delObjects(obj.getId())
    except OFS.ObjectManager.BeforeDeleteException:
        linked = True
    except:  # ignore other exceptions, not useful to us at this point
        pass
    finally:
        savepoint.rollback()
    return linked

def referenceRemoved(obj, event):
    """ store information about the removed link integrity reference """
    assert IReference.providedBy(obj)
    assert obj is event.object          # just making sure...
    if not obj.relationship == referencedRelationship:
        return                          # skip for other removed references
    # if the object the event was fired on doesn't have a `REQUEST` attribute
    # we can safely assume no direct user action was involved and therefore
    # never raise a link integrity exception...
    request = aq_get(obj, 'REQUEST', None)
    if not request:
        return
    storage = ILinkIntegrityInfo(request)
    source = obj.getSourceObject()
    if not IBaseObject.providedBy(source) and hasattr(source, 'context'):
        source = source.context
    target = obj.getTargetObject()
    if not IBaseObject.providedBy(target) and hasattr(target, 'context'):
        target = target.context
    if source is not None and target is not None:
        storage.addBreach(source, target)

def referencedObjectRemoved(obj, event):
    """ check if the removal was already confirmed or redirect to the form """
    # if the object the event was fired on doesn't have a `REQUEST` attribute
    # we can safely assume no direct user action was involved and therefore
    # never raise a link integrity exception...
    request = aq_get(obj, 'REQUEST', None)
    if not request:
        return
    info = ILinkIntegrityInfo(request)
    # first we check if link integrity checking was enabled
    if not info.integrityCheckingEnabled():
        return

    # since the event gets called for every subobject before it's
    # called for the item deleted directly via _delObject (event.object)
    # itself, but we do not want to present the user with a confirmation
    # form for every (referred) subobject, so we remember and skip them...
    info.addDeletedItem(obj)
    if obj is not event.object:
        return

    # if the number of expected events has been stored to help us prevent
    # multiple forms (i.e. in folder_delete), we wait for the next event
    # if we know there will be another...
    if info.moreEventsToExpect():
        return

    # at this point all subobjects have been removed already, so all
    # link integrity breaches caused by that have been collected as well;
    # if there aren't any (after things have been cleaned up),
    # we keep lurking in the shadows...
    if not info.getIntegrityBreaches():
        return

    # if the user has confirmed to remove the currently handled item in a
    # previous confirmation form we won't need it anymore this time around...
    if info.isConfirmedItem(obj):
        return

    # otherwise we raise an exception and pass the object that is supposed
    # to be removed as the exception value so we can use it as the context
    # for the view triggered by the exception;  this is needed since the
    # view is an adapter for the exception and a request, so it gets the
    # exception object as the context, which is not very useful...
    raise LinkIntegrityNotificationException(obj)