dbapi.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 15 Apr 2010 12:48:40 +0200
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parent 5271 94e16453a640
child 5321 6bdca255985a
permissions -rw-r--r--
backport stable
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"""DB-API 2.0 compliant module
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Take a look at http://www.python.org/peps/pep-0249.html
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(most parts of this document are reported here in docstrings)
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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: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
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"""
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__docformat__ = "restructuredtext en"
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from logging import getLogger
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from time import time, clock
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from itertools import count
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from warnings import warn
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from logilab.common.logging_ext import set_log_methods
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from logilab.common.decorators import monkeypatch
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from logilab.common.deprecation import deprecated
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from cubicweb import ETYPE_NAME_MAP, ConnectionError, AuthenticationError,\
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     cwvreg, cwconfig
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from cubicweb.req import RequestSessionBase
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_MARKER = object()
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def _fake_property_value(self, name):
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    try:
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        return super(DBAPIRequest, self).property_value(name)
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    except KeyError:
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        return ''
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def multiple_connections_fix():
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    """some monkey patching necessary when an application has to deal with
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    several connections to different repositories. It tries to hide buggy class
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    attributes since classes are not designed to be shared among multiple
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    registries.
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    """
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    defaultcls = cwvreg.VRegistry.REGISTRY_FACTORY[None]
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    etypescls = cwvreg.VRegistry.REGISTRY_FACTORY['etypes']
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    orig_etype_class = etypescls.orig_etype_class = etypescls.etype_class
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    @monkeypatch(defaultcls)
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    def etype_class(self, etype):
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        """return an entity class for the given entity type.
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        Try to find out a specific class for this kind of entity or
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        default to a dump of the class registered for 'Any'
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        """
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        usercls = orig_etype_class(self, etype)
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        if etype == 'Any':
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            return usercls
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        usercls.e_schema = self.schema.eschema(etype)
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        return usercls
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def multiple_connections_unfix():
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    etypescls = cwvreg.VRegistry.REGISTRY_FACTORY['etypes']
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    etypescls.etype_class = etypescls.orig_etype_class
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class ConnectionProperties(object):
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    def __init__(self, cnxtype=None, lang=None, close=True, log=False):
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        self.cnxtype = cnxtype or 'pyro'
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        self.lang = lang
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        self.log_queries = log
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        self.close_on_del = close
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def get_repository(method, database=None, config=None, vreg=None):
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    """get a proxy object to the CubicWeb repository, using a specific RPC method.
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    Only 'in-memory' and 'pyro' are supported for now. Either vreg or config
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    argument should be given
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    """
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    assert method in ('pyro', 'inmemory')
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    assert vreg or config
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    if vreg and not config:
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        config = vreg.config
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    if method == 'inmemory':
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        # get local access to the repository
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        from cubicweb.server.repository import Repository
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        return Repository(config, vreg=vreg)
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    else: # method == 'pyro'
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        # resolve the Pyro object
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        from logilab.common.pyro_ext import ns_get_proxy
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        try:
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            return ns_get_proxy(database,
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                                defaultnsgroup=config['pyro-ns-group'],
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                                nshost=config['pyro-ns-host'])
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        except Exception, ex:
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            raise ConnectionError(str(ex))
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def repo_connect(repo, login, **kwargs):
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    """Constructor to create a new connection to the CubicWeb repository.
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    Returns a Connection instance.
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    """
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    if not 'cnxprops' in kwargs:
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        kwargs['cnxprops'] = ConnectionProperties('inmemory')
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    cnxid = repo.connect(unicode(login), **kwargs)
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    cnx = Connection(repo, cnxid, kwargs['cnxprops'])
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    if kwargs['cnxprops'].cnxtype == 'inmemory':
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        cnx.vreg = repo.vreg
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    return cnx
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def connect(database=None, login=None, host=None, group=None,
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            cnxprops=None, setvreg=True, mulcnx=True, initlog=True, **kwargs):
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    """Constructor for creating a connection to the CubicWeb repository.
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    Returns a Connection object.
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    When method is 'pyro', setvreg is True, try to deal with connections to
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    differents instances in the same process unless specified otherwise by
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    setting the mulcnx to False.
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    """
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    config = cwconfig.CubicWebNoAppConfiguration()
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    if host:
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        config.global_set_option('pyro-ns-host', host)
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    if group:
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        config.global_set_option('pyro-ns-group', group)
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    cnxprops = cnxprops or ConnectionProperties()
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    method = cnxprops.cnxtype
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    repo = get_repository(method, database, config=config)
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    if method == 'inmemory':
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        vreg = repo.vreg
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    elif setvreg:
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        if mulcnx:
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            multiple_connections_fix()
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        vreg = cwvreg.CubicWebVRegistry(config, initlog=initlog)
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        schema = repo.get_schema()
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        for oldetype, newetype in ETYPE_NAME_MAP.items():
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            if oldetype in schema:
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                print 'aliasing', newetype, 'to', oldetype
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                schema._entities[newetype] = schema._entities[oldetype]
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        vreg.set_schema(schema)
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    else:
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        vreg = None
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    cnx = repo_connect(repo, login, cnxprops=cnxprops, **kwargs)
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    cnx.vreg = vreg
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    return cnx
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def in_memory_cnx(config, login, **kwargs):
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    """usefull method for testing and scripting to get a dbapi.Connection
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    object connected to an in-memory repository instance
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    """
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    if isinstance(config, cwvreg.CubicWebVRegistry):
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        vreg = config
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        config = None
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    else:
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        vreg = None
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    # get local access to the repository
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    repo = get_repository('inmemory', config=config, vreg=vreg)
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    # connection to the CubicWeb repository
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    cnxprops = ConnectionProperties('inmemory')
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    cnx = repo_connect(repo, login, cnxprops=cnxprops, **kwargs)
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    return repo, cnx
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class _NeedAuthAccessMock(object):
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    def __getattribute__(self, attr):
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        raise AuthenticationError()
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    def __nonzero__(self):
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        return False
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class DBAPISession(object):
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    def __init__(self, cnx, login=None, authinfo=None):
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        self.cnx = cnx
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        self.data = {}
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        self.login = login
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        self.authinfo = authinfo
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        # dbapi session identifier is the same as the first connection
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        # identifier, but may later differ in case of auto-reconnection as done
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        # by the web authentication manager (in cw.web.views.authentication)
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        if cnx is not None:
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            self.sessionid = cnx.sessionid
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        else:
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            self.sessionid = None
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    @property
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    def anonymous_session(self):
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        return not self.cnx or self.cnx.anonymous_connection
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   184
class DBAPIRequest(RequestSessionBase):
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    def __init__(self, vreg, session=None):
0
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        super(DBAPIRequest, self).__init__(vreg)
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        try:
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            # no vreg or config which doesn't handle translations
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            self.translations = vreg.config.translations
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        except AttributeError:
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            self.translations = {}
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        self.set_default_language(vreg)
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        # cache entities built during the request
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        self._eid_cache = {}
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        if session is not None:
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            self.set_session(session)
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        else:
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            # these args are initialized after a connection is
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            # established
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            self.session = None
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            self.cnx = self.user = _NeedAuthAccessMock()
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    def base_url(self):
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        return self.vreg.config['base-url']
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    def from_controller(self):
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        return 'view'
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    def set_session(self, session, user=None):
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        """method called by the session handler when the user is authenticated
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        or an anonymous connection is open
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        """
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        self.session = session
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        if session.cnx:
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            self.cnx = session.cnx
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            self.execute = session.cnx.cursor(self).execute
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            if user is None:
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                user = self.cnx.user(self, {'lang': self.lang})
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        if user is not None:
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            self.user = user
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            self.set_entity_cache(user)
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    def execute(self, *args, **kwargs):
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        """overriden when session is set. By default raise authentication error
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        so authentication is requested.
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        """
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        raise AuthenticationError()
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    def set_default_language(self, vreg):
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        try:
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            self.lang = vreg.property_value('ui.language')
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        except: # property may not be registered
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            self.lang = 'en'
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        # use req.__ to translate a message without registering it to the catalog
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        try:
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            gettext, pgettext = self.translations[self.lang]
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            self._ = self.__ = gettext
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            self.pgettext = pgettext
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        except KeyError:
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            # this occurs usually during test execution
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            self._ = self.__ = unicode
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            self.pgettext = lambda x, y: y
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        self.debug('request default language: %s', self.lang)
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    # entities cache management ###############################################
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    def entity_cache(self, eid):
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        return self._eid_cache[eid]
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    def set_entity_cache(self, entity):
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        self._eid_cache[entity.eid] = entity
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    def cached_entities(self):
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        return self._eid_cache.values()
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    def drop_entity_cache(self, eid=None):
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        if eid is None:
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            self._eid_cache = {}
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        else:
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            del self._eid_cache[eid]
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    # low level session data management #######################################
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    def get_shared_data(self, key, default=None, pop=False):
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        """return value associated to `key` in shared data"""
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        return self.cnx.get_shared_data(key, default, pop)
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    def set_shared_data(self, key, value, querydata=False):
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        """set value associated to `key` in shared data
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        if `querydata` is true, the value will be added to the repository
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        session's query data which are cleared on commit/rollback of the current
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        transaction, and won't be available through the connexion, only on the
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        repository side.
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        """
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        return self.cnx.set_shared_data(key, value, querydata)
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    # server session compat layer #############################################
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    def describe(self, eid):
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        """return a tuple (type, sourceuri, extid) for the entity with id <eid>"""
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        return self.cnx.describe(eid)
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    def source_defs(self):
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        """return the definition of sources used by the repository."""
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        return self.cnx.source_defs()
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    def hijack_user(self, user):
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        """return a fake request/session using specified user"""
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        req = DBAPIRequest(self.vreg)
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        req.set_session(self.session, user)
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        return req
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    @deprecated('[3.8] use direct access to req.session.data dictionary')
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    def session_data(self):
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        """return a dictionnary containing session data"""
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        return self.session.data
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    @deprecated('[3.8] use direct access to req.session.data dictionary')
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    def get_session_data(self, key, default=None, pop=False):
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        if pop:
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            return self.session.data.pop(key, default)
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        return self.session.data.get(key, default)
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    @deprecated('[3.8] use direct access to req.session.data dictionary')
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    def set_session_data(self, key, value):
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        self.session.data[key] = value
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    @deprecated('[3.8] use direct access to req.session.data dictionary')
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    def del_session_data(self, key):
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        self.session.data.pop(key, None)
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0
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set_log_methods(DBAPIRequest, getLogger('cubicweb.dbapi'))
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0
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# exceptions ##################################################################
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class ProgrammingError(Exception): #DatabaseError):
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    """Exception raised for errors that are related to the database's operation
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    and not necessarily under the control of the programmer, e.g. an unexpected
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    disconnect occurs, the data source name is not found, a transaction could
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    not be processed, a memory allocation error occurred during processing,
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    etc.
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    """
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5223
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# cursor / connection objects ##################################################
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class Cursor(object):
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    """These objects represent a database cursor, which is used to manage the
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    context of a fetch operation. Cursors created from the same connection are
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    not isolated, i.e., any changes done to the database by a cursor are
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    immediately visible by the other cursors. Cursors created from different
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    connections are isolated.
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   337
    """
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   338
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    def __init__(self, connection, repo, req=None):
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        """This read-only attribute return a reference to the Connection
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        object on which the cursor was created.
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   342
        """
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        self.connection = connection
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        """optionnal issuing request instance"""
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        self.req = req
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   346
        self._repo = repo
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        self._sessid = connection.sessionid
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    def close(self):
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        """no effect"""
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        pass
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   352
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    def execute(self, rql, args=None, eid_key=None, build_descr=True):
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        """execute a rql query, return resulting rows and their description in
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        a :class:`~cubicweb.rset.ResultSet` object
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   356
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   357
        * `rql` should be an Unicode string or a plain ASCII string, containing
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   358
          the rql query
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   359
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        * `args` the optional args dictionary associated to the query, with key
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          matching named substitution in `rql`
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   362
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   363
        * `build_descr` is a boolean flag indicating if the description should
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   364
          be built on select queries (if false, the description will be en empty
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   365
          list)
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   366
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        on INSERT queries, there will be one row for each inserted entity,
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        containing its eid
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   369
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   370
        on SET queries, XXX describe
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   371
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   372
        DELETE queries returns no result.
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   373
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   374
        .. Note::
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   375
          to maximize the rql parsing/analyzing cache performance, you should
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          always use substitute arguments in queries, i.e. avoid query such as::
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   377
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   378
            execute('Any X WHERE X eid 123')
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   379
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   380
          use::
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   381
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   382
            execute('Any X WHERE X eid %(x)s', {'x': 123})
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   383
        """
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   384
        if eid_key is not None:
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   385
            warn('[3.8] eid_key is deprecated, you can safely remove this argument',
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   386
                 DeprecationWarning, stacklevel=2)
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   387
        rset = self._repo.execute(self._sessid, rql, args, build_descr)
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   388
        rset.req = self.req
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   389
        return rset
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   390
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   391
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   392
class LogCursor(Cursor):
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   393
    """override the standard cursor to log executed queries"""
0
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parents:
diff changeset
   394
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   395
    def execute(self, operation, parameters=None, eid_key=None, build_descr=True):
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   396
        """override the standard cursor to log executed queries"""
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   397
        if eid_key is not None:
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   398
            warn('[3.8] eid_key is deprecated, you can safely remove this argument',
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   399
                 DeprecationWarning, stacklevel=2)
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   400
        tstart, cstart = time(), clock()
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   401
        rset = Cursor.execute(self, operation, parameters, build_descr=build_descr)
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   402
        self.connection.executed_queries.append((operation, parameters,
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   403
                                                 time() - tstart, clock() - cstart))
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   404
        return rset
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   405
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   406
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   407
class Connection(object):
3258
6536ee4f37f7 update the documentation
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3110
diff changeset
   408
    """DB-API 2.0 compatible Connection object for CubicWeb
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   409
    """
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   410
    # make exceptions available through the connection object
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   411
    ProgrammingError = ProgrammingError
5223
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   412
    # attributes that may be overriden per connection instance
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   413
    anonymous_connection = False
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   414
    cursor_class = Cursor
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   415
    vreg = None
6abd6e3599f4 #773448: refactor session and 'no connection' handling, by introducing proper web session. We should now be able to see page even when no anon is configured, and be redirected to the login form as soon as one tries to do a query.
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   416
    _closed = None
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   417
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   418
    def __init__(self, repo, cnxid, cnxprops=None):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   419
        self._repo = repo
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   420
        self.sessionid = cnxid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   421
        self._close_on_del = getattr(cnxprops, 'close_on_del', True)
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   422
        self._cnxtype = getattr(cnxprops, 'cnxtype', 'pyro')
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   423
        if cnxprops and cnxprops.log_queries:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   424
            self.executed_queries = []
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   425
            self.cursor_class = LogCursor
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   426
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   427
    def __repr__(self):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   428
        if self.anonymous_connection:
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   429
            return '<Connection %s (anonymous)>' % self.sessionid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   430
        return '<Connection %s>' % self.sessionid
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   431
5100
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   432
    def __enter__(self):
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   433
        return self.cursor()
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   434
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   435
    def __exit__(self, exc_type, exc_val, exc_tb):
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   436
        if exc_type is None:
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   437
            self.commit()
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   438
        else:
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   439
            self.rollback()
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   440
            return False #propagate the exception
04c71ebf38a5 Add context management methode to dbapi.Connection
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 5032
diff changeset
   441
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   442
    def request(self):
5223
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5174
diff changeset
   443
        return DBAPIRequest(self.vreg, DBAPISession(self))
0
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parents:
diff changeset
   444
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   445
    def check(self):
5032
e3fa27fc0d9a cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   446
        """raise `BadConnectionId` if the connection is no more valid"""
4768
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   447
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   448
            raise ProgrammingError('Closed connection')
1132
96752791c2b6 pylint cleanup
sylvain.thenault@logilab.fr
parents: 322
diff changeset
   449
        self._repo.check_session(self.sessionid)
0
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parents:
diff changeset
   450
2245
7463e1a748dd new set_session_props method exposed by the repository, use it to be sure session language is in sync the request language
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2111
diff changeset
   451
    def set_session_props(self, **props):
5032
e3fa27fc0d9a cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4913
diff changeset
   452
        """raise `BadConnectionId` if the connection is no more valid"""
4768
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   453
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   454
            raise ProgrammingError('Closed connection')
2245
7463e1a748dd new set_session_props method exposed by the repository, use it to be sure session language is in sync the request language
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2111
diff changeset
   455
        self._repo.set_session_props(self.sessionid, props)
7463e1a748dd new set_session_props method exposed by the repository, use it to be sure session language is in sync the request language
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2111
diff changeset
   456
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   457
    def get_shared_data(self, key, default=None, pop=False):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   458
        """return value associated to `key` in shared data"""
4768
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   459
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   460
            raise ProgrammingError('Closed connection')
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   461
        return self._repo.get_shared_data(self.sessionid, key, default, pop)
1524
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   462
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   463
    def set_shared_data(self, key, value, querydata=False):
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   464
        """set value associated to `key` in shared data
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   465
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   466
        if `querydata` is true, the value will be added to the repository
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   467
        session's query data which are cleared on commit/rollback of the current
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   468
        transaction, and won't be available through the connexion, only on the
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   469
        repository side.
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parents:
diff changeset
   470
        """
4768
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   471
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   472
            raise ProgrammingError('Closed connection')
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   473
        return self._repo.set_shared_data(self.sessionid, key, value, querydata)
1524
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   474
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   475
    def get_schema(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   476
        """Return the schema currently used by the repository.
1524
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sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   477
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   478
        This is NOT part of the DB-API.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   479
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   480
        if self._closed is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   481
            raise ProgrammingError('Closed connection')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   482
        return self._repo.get_schema()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   483
2657
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2650
diff changeset
   484
    def load_appobjects(self, cubes=_MARKER, subpath=None, expand=True,
3707
78596919ede3 [c-c] fixes for shell w/ pyro instance
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3275
diff changeset
   485
                        force_reload=None):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   486
        config = self.vreg.config
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   487
        if cubes is _MARKER:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   488
            cubes = self._repo.get_cubes()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   489
        elif cubes is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   490
            cubes = ()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   491
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   492
            if not isinstance(cubes, (list, tuple)):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   493
                cubes = (cubes,)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   494
            if expand:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   495
                cubes = config.expand_cubes(cubes)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   496
        if subpath is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   497
            subpath = esubpath = ('entities', 'views')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   498
        else:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   499
            esubpath = subpath
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   500
        if 'views' in subpath:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   501
            esubpath = list(subpath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   502
            esubpath.remove('views')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   503
            esubpath.append('web/views')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   504
        cubes = reversed([config.cube_dir(p) for p in cubes])
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   505
        vpath = config.build_vregistry_path(cubes, evobjpath=esubpath,
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   506
                                            tvobjpath=subpath)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   507
        self.vreg.register_objects(vpath, force_reload)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   508
        if self._cnxtype == 'inmemory':
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   509
            # should reinit hooks manager as well
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   510
            hm, config = self._repo.hm, self._repo.config
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   511
            hm.set_schema(hm.schema) # reset structure
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   512
            hm.register_system_hooks(config)
2476
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2266
diff changeset
   513
            # instance specific hooks
1294a6bdf3bf application -> instance where it makes sense
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2266
diff changeset
   514
            if self._repo.config.instance_hooks:
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   515
                hm.register_hooks(config.load_hooks(self.vreg))
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   516
2496
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   517
    def use_web_compatible_requests(self, baseurl, sitetitle=None):
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   518
        """monkey patch DBAPIRequest to fake a cw.web.request, so you should
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   519
        able to call html views using rset from a simple dbapi connection.
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   520
2657
de974465d381 [appobject] kill VObject class, move base selector classes to appobject
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2650
diff changeset
   521
        You should call `load_appobjects` at some point to register those views.
2496
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   522
        """
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   523
        from cubicweb.web.request import CubicWebRequestBase as cwrb
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   524
        DBAPIRequest.build_ajax_replace_url = cwrb.build_ajax_replace_url.im_func
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   525
        DBAPIRequest.list_form_param = cwrb.list_form_param.im_func
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   526
        DBAPIRequest.property_value = _fake_property_value
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   527
        DBAPIRequest.next_tabindex = count().next
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   528
        DBAPIRequest.form = {}
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   529
        DBAPIRequest.data = {}
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   530
        fake = lambda *args, **kwargs: None
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   531
        DBAPIRequest.relative_path = fake
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   532
        DBAPIRequest.url = fake
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   533
        DBAPIRequest.next_tabindex = fake
3832
ce8dd861f442 #473188: missing get_page_data when patching bare db-api request for web compatibility
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3707
diff changeset
   534
        DBAPIRequest.get_page_data = fake
3833
5507aa75f601 add set_page_data as well
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3832
diff changeset
   535
        DBAPIRequest.set_page_data = fake
2496
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   536
        DBAPIRequest.add_js = fake #cwrb.add_js.im_func
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   537
        DBAPIRequest.add_css = fake #cwrb.add_css.im_func
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   538
        # XXX could ask the repo for it's base-url configuration
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   539
        self.vreg.config.set_option('base-url', baseurl)
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   540
        # XXX why is this needed? if really needed, could be fetched by a query
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   541
        if sitetitle is not None:
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   542
            self.vreg['propertydefs']['ui.site-title'] = {'default': sitetitle}
fbd1fd2ca312 #343624: access to ORM and views outside web engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2476
diff changeset
   543
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   544
    def source_defs(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   545
        """Return the definition of sources used by the repository.
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   546
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   547
        This is NOT part of the DB-API.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   548
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   549
        if self._closed is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   550
            raise ProgrammingError('Closed connection')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   551
        return self._repo.source_defs()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   552
322
0d9aca19b3d0 make req argument optional
Sylvain Thenault <sylvain.thenault@logilab.fr>
parents: 169
diff changeset
   553
    def user(self, req=None, props=None):
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   554
        """return the User object associated to this connection"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   555
        # cnx validity is checked by the call to .user_info
4768
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   556
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   557
            raise ProgrammingError('Closed connection')
2245
7463e1a748dd new set_session_props method exposed by the repository, use it to be sure session language is in sync the request language
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2111
diff changeset
   558
        eid, login, groups, properties = self._repo.user_info(self.sessionid,
7463e1a748dd new set_session_props method exposed by the repository, use it to be sure session language is in sync the request language
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2111
diff changeset
   559
                                                              props)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   560
        if req is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   561
            req = self.request()
1923
3802c2e37e72 handle speaking to an instance using old entity types
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 1882
diff changeset
   562
        rset = req.eid_rset(eid, 'CWUser')
2650
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2496
diff changeset
   563
        user = self.vreg['etypes'].etype_class('CWUser')(req, rset, row=0,
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2496
diff changeset
   564
                                                         groups=groups,
18aec79ec3a3 R [vreg] important refactoring of the vregistry, moving behaviour to end dictionnary (and so leaving room for more flexibility ; keep bw compat ; update api usage in cw
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2496
diff changeset
   565
                                                         properties=properties)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   566
        user['login'] = login # cache login
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   567
        return user
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   568
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   569
    def __del__(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   570
        """close the remote connection if necessary"""
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   571
        if self._closed is None and self._close_on_del:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   572
            try:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   573
                self.close()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   574
            except:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   575
                pass
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   576
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   577
    def describe(self, eid):
4768
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   578
        if self._closed is not None:
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   579
            raise ProgrammingError('Closed connection')
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   580
        return self._repo.describe(self.sessionid, eid)
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   581
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   582
    def close(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   583
        """Close the connection now (rather than whenever __del__ is called).
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   584
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   585
        The connection will be unusable from this point forward; an Error (or
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   586
        subclass) exception will be raised if any operation is attempted with
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   587
        the connection. The same applies to all cursor objects trying to use the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   588
        connection.  Note that closing a connection without committing the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   589
        changes first will cause an implicit rollback to be performed.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   590
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   591
        if self._closed:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   592
            raise ProgrammingError('Connection is already closed')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   593
        self._repo.close(self.sessionid)
4768
430b89aed996 delete pyro proxy on connection close, properly raise programming error when working on a closed connection
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4721
diff changeset
   594
        del self._repo # necessary for proper garbage collection
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   595
        self._closed = 1
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   596
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   597
    def commit(self):
4913
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   598
        """Commit pending transaction for this connection to the repository.
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   599
4913
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   600
        may raises `Unauthorized` or `ValidationError` if we attempted to do
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   601
        something we're not allowed to for security or integrity reason.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   602
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   603
        If the transaction is undoable, a transaction id will be returned.
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   604
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   605
        if not self._closed is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   606
            raise ProgrammingError('Connection is already closed')
4913
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   607
        return self._repo.commit(self.sessionid)
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   608
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   609
    def rollback(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   610
        """This method is optional since not all databases provide transaction
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   611
        support.
1524
1d7575f5deaf delete-trailing-whitespaces
sylvain.thenault@logilab.fr
parents: 1398
diff changeset
   612
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   613
        In case a database does provide transactions this method causes the the
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   614
        database to roll back to the start of any pending transaction.  Closing
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   615
        a connection without committing the changes first will cause an implicit
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   616
        rollback to be performed.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   617
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   618
        if not self._closed is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   619
            raise ProgrammingError('Connection is already closed')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   620
        self._repo.rollback(self.sessionid)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   621
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   622
    def cursor(self, req=None):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   623
        """Return a new Cursor Object using the connection.  If the database
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   624
        does not provide a direct cursor concept, the module will have to
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   625
        emulate cursors using other means to the extent needed by this
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   626
        specification.
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   627
        """
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   628
        if self._closed is not None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   629
            raise ProgrammingError('Can\'t get cursor on closed connection')
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   630
        if req is None:
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   631
            req = self.request()
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   632
        return self.cursor_class(self, self._repo, req=req)
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   633
4913
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   634
    # undo support ############################################################
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   635
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   636
    def undoable_transactions(self, ueid=None, req=None, **actionfilters):
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   637
        """Return a list of undoable transaction objects by the connection's
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   638
        user, ordered by descendant transaction time.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   639
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   640
        Managers may filter according to user (eid) who has done the transaction
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   641
        using the `ueid` argument. Others will only see their own transactions.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   642
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   643
        Additional filtering capabilities is provided by using the following
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   644
        named arguments:
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   645
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   646
        * `etype` to get only transactions creating/updating/deleting entities
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   647
          of the given type
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   648
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   649
        * `eid` to get only transactions applied to entity of the given eid
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   650
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   651
        * `action` to get only transactions doing the given action (action in
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   652
          'C', 'U', 'D', 'A', 'R'). If `etype`, action can only be 'C', 'U' or
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   653
          'D'.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   654
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   655
        * `public`: when additional filtering is provided, their are by default
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   656
          only searched in 'public' actions, unless a `public` argument is given
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   657
          and set to false.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   658
        """
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   659
        txinfos = self._repo.undoable_transactions(self.sessionid, ueid,
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   660
                                                   **actionfilters)
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   661
        if req is None:
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   662
            req = self.request()
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   663
        for txinfo in txinfos:
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   664
            txinfo.req = req
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   665
        return txinfos
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   666
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   667
    def transaction_info(self, txuuid, req=None):
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   668
        """Return transaction object for the given uid.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   669
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   670
        raise `NoSuchTransaction` if not found or if session's user is not
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   671
        allowed (eg not in managers group and the transaction doesn't belong to
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   672
        him).
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   673
        """
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   674
        txinfo = self._repo.transaction_info(self.sessionid, txuuid)
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   675
        if req is None:
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   676
            req = self.request()
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   677
        txinfo.req = req
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   678
        return txinfo
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   679
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   680
    def transaction_actions(self, txuuid, public=True):
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   681
        """Return an ordered list of action effectued during that transaction.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   682
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   683
        If public is true, return only 'public' actions, eg not ones triggered
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   684
        under the cover by hooks, else return all actions.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   685
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   686
        raise `NoSuchTransaction` if the transaction is not found or if
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   687
        session's user is not allowed (eg not in managers group and the
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   688
        transaction doesn't belong to him).
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   689
        """
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   690
        return self._repo.transaction_actions(self.sessionid, txuuid, public)
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   691
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   692
    def undo_transaction(self, txuuid):
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   693
        """Undo the given transaction. Return potential restoration errors.
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   694
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   695
        raise `NoSuchTransaction` if not found or if session's user is not
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   696
        allowed (eg not in managers group and the transaction doesn't belong to
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   697
        him).
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   698
        """
083b4d454192 server/web api for accessing to deleted_entites
Katia Saurfelt <katia.saurfelt@logilab.fr>
parents: 4895
diff changeset
   699
        return self._repo.undo_transaction(self.sessionid, txuuid)