author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 26 Aug 2009 14:45:56 +0200 | |
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parent 2968 | 0e3460341023 |
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permissions | -rw-r--r-- |
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"""CubicWeb is a generic framework to quickly build applications which describes |
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relations between entitites. |
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:organization: Logilab |
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:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2. |
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:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr |
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:license: Library General Public License version 2 - http://www.gnu.org/licenses |
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""" |
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__docformat__ = "restructuredtext en" |
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import __builtin__ |
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# '_' is available in builtins to mark internationalized string but should |
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# not be used to do the actual translation |
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if not hasattr(__builtin__, '_'): |
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__builtin__._ = unicode |
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CW_SOFTWARE_ROOT = __path__[0] |
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import sys, os, logging |
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from StringIO import StringIO |
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from logilab.common.logging_ext import set_log_methods |
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if os.environ.get('APYCOT_ROOT'): |
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logging.basicConfig(level=logging.CRITICAL) |
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else: |
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logging.basicConfig() |
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from cubicweb.__pkginfo__ import version as __version__ |
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set_log_methods(sys.modules[__name__], logging.getLogger('cubicweb')) |
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# make all exceptions accessible from the package |
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from cubicweb._exceptions import * |
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# convert eid to the right type, raise ValueError if it's not a valid eid |
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typed_eid = int |
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#def log_thread(f, w, a): |
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# print f.f_code.co_filename, f.f_code.co_name |
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#import threading |
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#threading.settrace(log_thread) |
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class Binary(StringIO): |
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"""customize StringIO to make sure we don't use unicode""" |
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def __init__(self, buf=''): |
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assert isinstance(buf, (str, buffer)), \ |
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"Binary objects must use raw strings, not %s" % buf.__class__ |
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StringIO.__init__(self, buf) |
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def write(self, data): |
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assert isinstance(data, (str, buffer)), \ |
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"Binary objects must use raw strings, not %s" % data.__class__ |
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StringIO.write(self, data) |
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# XXX 2.45 is allowing nicer entity type names, use this map for bw compat |
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ETYPE_NAME_MAP = {# 3.2 migration |
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'ECache': 'CWCache', |
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'EUser': 'CWUser', |
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'EGroup': 'CWGroup', |
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'EProperty': 'CWProperty', |
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'EFRDef': 'CWAttribute', |
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'ENFRDef': 'CWRelation', |
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'ERType': 'CWRType', |
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'EEType': 'CWEType', |
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'EConstraintType': 'CWConstraintType', |
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'EConstraint': 'CWConstraint', |
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'EPermission': 'CWPermission', |
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# 2.45 migration |
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'Eetype': 'CWEType', |
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'Ertype': 'CWRType', |
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'Efrdef': 'CWAttribute', |
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'Enfrdef': 'CWRelation', |
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'Econstraint': 'CWConstraint', |
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'Econstrainttype': 'CWConstraintType', |
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'Epermission': 'CWPermission', |
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'Egroup': 'CWGroup', |
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'Euser': 'CWUser', |
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'Eproperty': 'CWProperty', |
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'Emailaddress': 'EmailAddress', |
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'Rqlexpression': 'RQLExpression', |
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'Trinfo': 'TrInfo', |
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} |
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# XXX cubic web cube migration map |
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CW_MIGRATION_MAP = {'erudi': 'cubicweb', |
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'eaddressbook': 'addressbook', |
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'ebasket': 'basket', |
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'eblog': 'blog', |
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'ebook': 'book', |
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'ecomment': 'comment', |
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'ecompany': 'company', |
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'econference': 'conference', |
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'eemail': 'email', |
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'eevent': 'event', |
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'eexpense': 'expense', |
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'efile': 'file', |
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'einvoice': 'invoice', |
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'elink': 'link', |
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'emailinglist': 'mailinglist', |
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'eperson': 'person', |
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'eshopcart': 'shopcart', |
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'eskillmat': 'skillmat', |
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'etask': 'task', |
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'eworkcase': 'workcase', |
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'eworkorder': 'workorder', |
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'ezone': 'zone', |
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'i18ncontent': 'i18ncontent', |
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'svnfile': 'vcsfile', |
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'eclassschemes': 'keyword', |
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'eclassfolders': 'folder', |
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'eclasstags': 'tag', |
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'jpl': 'jpl', |
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'jplintra': 'jplintra', |
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'jplextra': 'jplextra', |
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'jplorg': 'jplorg', |
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'jplrecia': 'jplrecia', |
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'crm': 'crm', |
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'agueol': 'agueol', |
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'docaster': 'docaster', |
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'asteretud': 'asteretud', |
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} |
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def neg_role(role): |
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if role == 'subject': |
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return 'object' |
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return 'subject' |
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def role(obj): |
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try: |
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return obj.role |
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except AttributeError: |
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return neg_role(obj.target) |
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def target(obj): |
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try: |
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return obj.target |
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except AttributeError: |
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return neg_role(obj.role) |
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class CubicWebEventManager(object): |
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"""simple event / callback manager. |
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Typical usage to register a callback:: |
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>>> from cubicweb import CW_EVENT_MANAGER |
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>>> CW_EVENT_MANAGER.bind('after-registry-reload', mycallback) |
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Typical usage to emit an event:: |
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>>> from cubicweb import CW_EVENT_MANAGER |
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>>> CW_EVENT_MANAGER.emit('after-registry-reload') |
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emit() accepts an additional context parameter that will be passed |
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to the callback if specified (and only in that case) |
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""" |
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def __init__(self): |
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self.callbacks = {} |
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def bind(self, event, callback, *args, **kwargs): |
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self.callbacks.setdefault(event, []).append( (callback, args, kwargs) ) |
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def emit(self, event, context=None): |
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for callback, args, kwargs in self.callbacks.get(event, ()): |
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if context is None: |
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callback(*args, **kwargs) |
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else: |
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callback(context, *args, **kwargs) |
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CW_EVENT_MANAGER = CubicWebEventManager() |
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def onevent(event): |
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"""decorator to ease event / callback binding |
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>>> from cubicweb import onevent |
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>>> @onevent('before-registry-reload') |
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... def mycallback(): |
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... print 'hello' |
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... |
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>>> |
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""" |
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def _decorator(func): |
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CW_EVENT_MANAGER.bind(event, func) |
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return func |
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return _decorator |