author | Sylvain Thénault <sylvain.thenault@logilab.fr> |
Wed, 03 Feb 2010 10:55:25 +0100 | |
branch | stable |
changeset 4432 | 4281e1e2d76b |
parent 4212 | ab6573088b4a |
child 4252 | 6c4f109c2b03 |
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: 2001-2010 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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from cubicweb.__pkginfo__ import version as __version__ |
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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 urllib import quote as urlquote, unquote as urlunquote |
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from logilab.common.decorators import cached |
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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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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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class RequestSessionMixIn(object): |
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"""mixin class containing stuff shared by server session and web request |
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""" |
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def __init__(self, vreg): |
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self.vreg = vreg |
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try: |
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encoding = vreg.property_value('ui.encoding') |
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except: # no vreg or property not registered |
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encoding = 'utf-8' |
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self.encoding = encoding |
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# cache result of execution for (rql expr / eids), |
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# should be emptied on commit/rollback of the server session / web |
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# connection |
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self.local_perm_cache = {} |
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def property_value(self, key): |
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if self.user: |
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return self.user.property_value(key) |
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return self.vreg.property_value(key) |
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def etype_rset(self, etype, size=1): |
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"""return a fake result set for a particular entity type""" |
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from cubicweb.rset import ResultSet |
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rset = ResultSet([('A',)]*size, '%s X' % etype, |
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description=[(etype,)]*size) |
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def get_entity(row, col=0, etype=etype, req=self, rset=rset): |
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return req.vreg.etype_class(etype)(req, rset, row, col) |
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rset.get_entity = get_entity |
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return self.decorate_rset(rset) |
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def eid_rset(self, eid, etype=None): |
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"""return a result set for the given eid without doing actual query |
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(we have the eid, we can suppose it exists and user has access to the |
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entity) |
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""" |
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from cubicweb.rset import ResultSet |
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eid = typed_eid(eid) |
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if etype is None: |
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etype = self.describe(eid)[0] |
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rset = ResultSet([(eid,)], 'Any X WHERE X eid %(x)s', {'x': eid}, |
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[(etype,)]) |
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return self.decorate_rset(rset) |
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def empty_rset(self): |
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"""return an empty result set. This is used e.g. to substitute |
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to a real result set if the user doesn't have permission to |
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access the results of a query. |
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""" |
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from cubicweb.rset import ResultSet |
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return self.decorate_rset(ResultSet([], 'Any X WHERE X eid -1')) |
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def entity_from_eid(self, eid, etype=None): |
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try: |
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return self.entity_cache(eid) |
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except KeyError: |
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rset = self.eid_rset(eid, etype) |
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entity = rset.get_entity(0, 0) |
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self.set_entity_cache(entity) |
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return entity |
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def entity_cache(self, eid): |
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raise KeyError |
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def set_entity_cache(self, entity): |
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pass |
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def create_entity(self, etype, _cw_unsafe=False, **kwargs): |
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"""add a new entity of the given type |
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Example (in a shell session): |
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c = create_entity('Company', name=u'Logilab') |
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create_entity('Person', works_for=c, firstname=u'John', lastname=u'Doe') |
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""" |
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if _cw_unsafe: |
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execute = self.unsafe_execute |
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else: |
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execute = self.execute |
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rql = 'INSERT %s X' % etype |
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relations = [] |
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restrictions = set() |
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cachekey = [] |
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pending_relations = [] |
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for attr, value in kwargs.items(): |
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145 |
if isinstance(value, (tuple, list, set, frozenset)): |
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146 |
if len(value) == 1: |
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value = iter(value).next() |
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else: |
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del kwargs[attr] |
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pending_relations.append( (attr, value) ) |
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151 |
continue |
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152 |
if hasattr(value, 'eid'): # non final relation |
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rvar = attr.upper() |
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154 |
# XXX safer detection of object relation |
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155 |
if attr.startswith('reverse_'): |
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156 |
relations.append('%s %s X' % (rvar, attr[len('reverse_'):])) |
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157 |
else: |
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158 |
relations.append('X %s %s' % (attr, rvar)) |
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159 |
restriction = '%s eid %%(%s)s' % (rvar, attr) |
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160 |
if not restriction in restrictions: |
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161 |
restrictions.add(restriction) |
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162 |
cachekey.append(attr) |
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163 |
kwargs[attr] = value.eid |
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164 |
else: # attribute |
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165 |
relations.append('X %s %%(%s)s' % (attr, attr)) |
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166 |
if relations: |
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167 |
rql = '%s: %s' % (rql, ', '.join(relations)) |
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168 |
if restrictions: |
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169 |
rql = '%s WHERE %s' % (rql, ', '.join(restrictions)) |
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created = execute(rql, kwargs, cachekey).get_entity(0, 0) |
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for attr, values in pending_relations: |
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if attr.startswith('reverse_'): |
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restr = 'Y %s X' % attr[len('reverse_'):] |
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|
174 |
else: |
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175 |
restr = 'X %s Y' % attr |
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176 |
execute('SET %s WHERE X eid %%(x)s, Y eid IN (%s)' % ( |
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177 |
restr, ','.join(str(r.eid) for r in values)), |
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178 |
{'x': created.eid}, 'x') |
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return created |
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180 |
|
0 | 181 |
# url generation methods ################################################## |
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182 |
|
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|
183 |
def build_url(self, *args, **kwargs): |
0 | 184 |
"""return an absolute URL using params dictionary key/values as URL |
185 |
parameters. Values are automatically URL quoted, and the |
|
186 |
publishing method to use may be specified or will be guessed. |
|
187 |
""" |
|
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|
188 |
# use *args since we don't want first argument to be "anonymous" to |
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|
189 |
# avoid potential clash with kwargs |
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|
190 |
assert len(args) == 1, 'only 0 or 1 non-named-argument expected' |
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|
191 |
method = args[0] |
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|
192 |
base_url = kwargs.pop('base_url', None) |
0 | 193 |
if base_url is None: |
194 |
base_url = self.base_url() |
|
195 |
if '_restpath' in kwargs: |
|
196 |
assert method == 'view', method |
|
197 |
path = kwargs.pop('_restpath') |
|
198 |
else: |
|
199 |
path = method |
|
200 |
if not kwargs: |
|
201 |
return u'%s%s' % (base_url, path) |
|
202 |
return u'%s%s?%s' % (base_url, path, self.build_url_params(**kwargs)) |
|
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|
203 |
|
0 | 204 |
|
205 |
def build_url_params(self, **kwargs): |
|
206 |
"""return encoded params to incorporate them in an URL""" |
|
207 |
args = [] |
|
208 |
for param, values in kwargs.items(): |
|
209 |
if not isinstance(values, (list, tuple)): |
|
210 |
values = (values,) |
|
211 |
for value in values: |
|
212 |
args.append(u'%s=%s' % (param, self.url_quote(value))) |
|
213 |
return '&'.join(args) |
|
214 |
||
215 |
def url_quote(self, value, safe=''): |
|
216 |
"""urllib.quote is not unicode safe, use this method to do the |
|
217 |
necessary encoding / decoding. Also it's designed to quote each |
|
218 |
part of a url path and so the '/' character will be encoded as well. |
|
219 |
""" |
|
220 |
if isinstance(value, unicode): |
|
221 |
quoted = urlquote(value.encode(self.encoding), safe=safe) |
|
222 |
return unicode(quoted, self.encoding) |
|
223 |
return urlquote(str(value), safe=safe) |
|
224 |
||
225 |
def url_unquote(self, quoted): |
|
226 |
"""returns a unicode unquoted string |
|
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227 |
|
0 | 228 |
decoding is based on `self.encoding` which is the encoding |
229 |
used in `url_quote` |
|
230 |
""" |
|
231 |
if isinstance(quoted, unicode): |
|
232 |
quoted = quoted.encode(self.encoding) |
|
233 |
try: |
|
234 |
return unicode(urlunquote(quoted), self.encoding) |
|
235 |
except UnicodeDecodeError: # might occurs on manually typed URLs |
|
236 |
return unicode(urlunquote(quoted), 'iso-8859-1') |
|
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|
237 |
|
0 | 238 |
|
239 |
# session's user related methods ##################################### |
|
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|
240 |
|
0 | 241 |
@cached |
242 |
def user_data(self): |
|
243 |
"""returns a dictionnary with this user's information""" |
|
244 |
userinfo = {} |
|
245 |
if self.is_internal_session: |
|
246 |
userinfo['login'] = "cubicweb" |
|
247 |
userinfo['name'] = "cubicweb" |
|
248 |
userinfo['email'] = "" |
|
249 |
return userinfo |
|
250 |
user = self.actual_session().user |
|
251 |
userinfo['login'] = user.login |
|
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|
252 |
userinfo['name'] = user.name() |
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|
253 |
userinfo['email'] = user.get_email() |
0 | 254 |
return userinfo |
255 |
||
256 |
def is_internal_session(self): |
|
257 |
"""overrided on the server-side""" |
|
258 |
return False |
|
259 |
||
260 |
# abstract methods to override according to the web front-end ############# |
|
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|
261 |
|
0 | 262 |
def base_url(self): |
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|
263 |
"""return the root url of the instance""" |
0 | 264 |
raise NotImplementedError |
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|
265 |
|
0 | 266 |
def decorate_rset(self, rset): |
267 |
"""add vreg/req (at least) attributes to the given result set """ |
|
268 |
raise NotImplementedError |
|
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|
269 |
|
0 | 270 |
def describe(self, eid): |
271 |
"""return a tuple (type, sourceuri, extid) for the entity with id <eid>""" |
|
272 |
raise NotImplementedError |
|
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|
273 |
|
0 | 274 |
|
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|
275 |
# XXX 2.45 is allowing nicer entity type names, use this map for bw compat |
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|
276 |
ETYPE_NAME_MAP = {# 3.2 migration |
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|
277 |
'ECache': 'CWCache', |
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|
278 |
'EUser': 'CWUser', |
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|
279 |
'EGroup': 'CWGroup', |
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|
280 |
'EProperty': 'CWProperty', |
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|
281 |
'EFRDef': 'CWAttribute', |
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changeset
|
282 |
'ENFRDef': 'CWRelation', |
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|
283 |
'ERType': 'CWRType', |
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|
284 |
'EEType': 'CWEType', |
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|
285 |
'EConstraintType': 'CWConstraintType', |
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|
286 |
'EConstraint': 'CWConstraint', |
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|
287 |
'EPermission': 'CWPermission', |
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changeset
|
288 |
# 2.45 migration |
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changeset
|
289 |
'Eetype': 'CWEType', |
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changeset
|
290 |
'Ertype': 'CWRType', |
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changeset
|
291 |
'Efrdef': 'CWAttribute', |
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changeset
|
292 |
'Enfrdef': 'CWRelation', |
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changeset
|
293 |
'Econstraint': 'CWConstraint', |
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changeset
|
294 |
'Econstrainttype': 'CWConstraintType', |
5fe84a5f7035
rename internal entity types to have CW prefix instead of E
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parents:
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changeset
|
295 |
'Epermission': 'CWPermission', |
5fe84a5f7035
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changeset
|
296 |
'Egroup': 'CWGroup', |
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changeset
|
297 |
'Euser': 'CWUser', |
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parents:
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changeset
|
298 |
'Eproperty': 'CWProperty', |
0 | 299 |
'Emailaddress': 'EmailAddress', |
300 |
'Rqlexpression': 'RQLExpression', |
|
301 |
'Trinfo': 'TrInfo', |
|
302 |
} |
|
303 |
||
304 |
||
305 |
||
306 |
# XXX cubic web cube migration map |
|
307 |
CW_MIGRATION_MAP = {'erudi': 'cubicweb', |
|
308 |
||
309 |
'eaddressbook': 'addressbook', |
|
310 |
'ebasket': 'basket', |
|
311 |
'eblog': 'blog', |
|
312 |
'ebook': 'book', |
|
313 |
'ecomment': 'comment', |
|
314 |
'ecompany': 'company', |
|
315 |
'econference': 'conference', |
|
316 |
'eemail': 'email', |
|
317 |
'eevent': 'event', |
|
318 |
'eexpense': 'expense', |
|
319 |
'efile': 'file', |
|
320 |
'einvoice': 'invoice', |
|
321 |
'elink': 'link', |
|
322 |
'emailinglist': 'mailinglist', |
|
323 |
'eperson': 'person', |
|
324 |
'eshopcart': 'shopcart', |
|
325 |
'eskillmat': 'skillmat', |
|
326 |
'etask': 'task', |
|
327 |
'eworkcase': 'workcase', |
|
328 |
'eworkorder': 'workorder', |
|
329 |
'ezone': 'zone', |
|
330 |
'i18ncontent': 'i18ncontent', |
|
331 |
'svnfile': 'vcsfile', |
|
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fix imports, cleanup, repair some ajax calls
sylvain.thenault@logilab.fr
parents:
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diff
changeset
|
332 |
|
0 | 333 |
'eclassschemes': 'keyword', |
334 |
'eclassfolders': 'folder', |
|
335 |
'eclasstags': 'tag', |
|
336 |
||
337 |
'jpl': 'jpl', |
|
338 |
'jplintra': 'jplintra', |
|
339 |
'jplextra': 'jplextra', |
|
340 |
'jplorg': 'jplorg', |
|
341 |
'jplrecia': 'jplrecia', |
|
342 |
'crm': 'crm', |
|
343 |
'agueol': 'agueol', |
|
344 |
'docaster': 'docaster', |
|
345 |
'asteretud': 'asteretud', |
|
346 |
} |
|
231
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
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0
diff
changeset
|
347 |
|
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
348 |
def neg_role(role): |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
349 |
if role == 'subject': |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
350 |
return 'object' |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
351 |
return 'subject' |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
352 |
|
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
353 |
def role(obj): |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
354 |
try: |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
355 |
return obj.role |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
356 |
except AttributeError: |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
357 |
return neg_role(obj.target) |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
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parents:
0
diff
changeset
|
358 |
|
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
359 |
def target(obj): |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
360 |
try: |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
361 |
return obj.target |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
362 |
except AttributeError: |
d740f5f55d30
some mini function to ease role (subject/object) manipulation
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents:
0
diff
changeset
|
363 |
return neg_role(obj.role) |
1498
2c6eec0b46b9
fix imports, cleanup, repair some ajax calls
sylvain.thenault@logilab.fr
parents:
1398
diff
changeset
|
364 |
|
2395
e3093fc12a00
[cw-ctl] improve dialog messages
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
1977
diff
changeset
|
365 |
def underline_title(title, car='-'): |
e3093fc12a00
[cw-ctl] improve dialog messages
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
1977
diff
changeset
|
366 |
return title+'\n'+(car*len(title)) |
e3093fc12a00
[cw-ctl] improve dialog messages
Nicolas Chauvat <nicolas.chauvat@logilab.fr>
parents:
1977
diff
changeset
|
367 |
|
2683
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
368 |
|
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
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2647
diff
changeset
|
369 |
class CubicWebEventManager(object): |
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
370 |
"""simple event / callback manager. |
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
371 |
|
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
372 |
Typical usage to register a callback:: |
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
373 |
|
52b1a86c1913
introduce a new CubicwebEventManager
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2647
diff
changeset
|
374 |
>>> from cubicweb import CW_EVENT_MANAGER |
2705
30bcdbd92820
[events] renamed source-reload into registry-reload to avoid potential confusions with datasources
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
2689
diff
changeset
|
375 |
>>> CW_EVENT_MANAGER.bind('after-registry-reload', mycallback) |
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376 |
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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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382 |
emit() accepts an additional context parameter that will be passed |
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383 |
to the callback if specified (and only in that case) |
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384 |
""" |
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385 |
def __init__(self): |
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self.callbacks = {} |
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387 |
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388 |
def bind(self, event, callback, *args, **kwargs): |
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self.callbacks.setdefault(event, []).append( (callback, args, kwargs) ) |
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390 |
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391 |
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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395 |
else: |
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callback(context, *args, **kwargs) |
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397 |
|
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CW_EVENT_MANAGER = CubicWebEventManager() |
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399 |
|
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def onevent(event): |
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"""decorator to ease event / callback binding |
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402 |
|
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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 |