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# Copyright (C) 2006-2007 Red Hat, Inc.
# Copyright (C) 2007, One Laptop Per Child
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the
# Free Software Foundation, Inc., 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
"""
UNSTABLE. Should be internal to the datastore module.
"""
import logging
import dbus
import dbus.glib
DS_DBUS_SERVICE = "org.laptop.sugar.DataStore"
DS_DBUS_INTERFACE = "org.laptop.sugar.DataStore"
DS_DBUS_PATH = "/org/laptop/sugar/DataStore"
_data_store = None
def _get_data_store():
global _data_store
if not _data_store:
_bus = dbus.SessionBus()
_data_store = dbus.Interface(_bus.get_object(DS_DBUS_SERVICE,
DS_DBUS_PATH),
DS_DBUS_INTERFACE)
return _data_store
def create(properties, filename, transfer_ownership=False):
object_id = _get_data_store().create(dbus.Dictionary(properties), filename,
transfer_ownership)
logging.debug('dbus_helpers.create: ' + object_id)
return object_id
def update(uid, properties, filename, transfer_ownership=False,
reply_handler=None, error_handler=None, timeout=-1):
debug_props = properties.copy()
if debug_props.has_key("preview"):
debug_props["preview"] = "<omitted>"
logging.debug('dbus_helpers.update: %s, %s, %s, %s' %
(uid, filename, debug_props, transfer_ownership))
if reply_handler and error_handler:
_get_data_store().update(uid, dbus.Dictionary(properties), filename,
transfer_ownership,
reply_handler=reply_handler,
error_handler=error_handler,
timeout=timeout)
else:
_get_data_store().update(uid, dbus.Dictionary(properties),
filename, transfer_ownership)
def delete(uid):
logging.debug('dbus_helpers.delete: %r' % uid)
_get_data_store().delete(uid)
def get_properties(uid):
logging.debug('dbus_helpers.get_properties: %s' % uid)
return _get_data_store().get_properties(uid, byte_arrays=True)
def get_filename(uid):
filename = _get_data_store().get_filename(uid)
logging.debug('dbus_helpers.get_filename: %s, %s' % (uid, filename))
return filename
def find(query, properties, reply_handler, error_handler):
logging.debug('dbus_helpers.find: %r %r' % (query, properties))
if reply_handler and error_handler:
return _get_data_store().find(query, properties,
reply_handler=reply_handler, error_handler=error_handler,
byte_arrays=True)
else:
return _get_data_store().find(query, properties, byte_arrays=True)
def mount(uri, options, timeout=-1):
return _get_data_store().mount(uri, options, timeout=timeout)
def unmount(mount_point_id):
_get_data_store().unmount(mount_point_id)
def mounts():
return _get_data_store().mounts()
def get_unique_values(key):
return _get_data_store().get_uniquevaluesfor(
key, dbus.Dictionary({}, signature='ss'))
def complete_indexing():
return _get_data_store().complete_indexing()
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