92 lines
2.9 KiB
Python
92 lines
2.9 KiB
Python
# Copyright (C) 2007, One Laptop Per Child
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program; if not, write to the Free Software
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# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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import logging
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import gobject
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from sugar.datastore import dbus_helpers
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class DSObject(gobject.GObject):
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__gsignals__ = {
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'updated': (gobject.SIGNAL_RUN_FIRST, gobject.TYPE_NONE,
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([]))
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}
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def __init__(self, object_id, metadata, file_path):
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gobject.GObject.__init__(self)
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self.object_id = object_id
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self._metadata = metadata
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self._file_path = file_path
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def __getitem__(self, key):
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return self.metadata[key]
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def __setitem__(self, key, value):
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if not self.metadata.has_key(key) or self.metadata[key] != value:
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self.metadata[key] = value
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self.emit('updated')
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def get_metadata(self):
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return self._metadata
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def set_metadata(self, metadata):
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if self._metadata != metadata:
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self._metadata = metadata
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self.emit('updated')
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metadata = property(get_metadata, set_metadata)
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def get_file_path(self):
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return self._file_path
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def set_file_path(self, file_path):
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if self._file_path != file_path:
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self._file_path = file_path
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self.emit('updated')
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file_path = property(get_file_path, set_file_path)
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def get(object_id):
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logging.debug('datastore.get')
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metadata = dbus_helpers.get_properties(object_id)
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file_path = dbus_helpers.get_filename(object_id)
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ds_object = DSObject(object_id, metadata, file_path)
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# TODO: register the object for updates
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return ds_object
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def create():
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return DSObject(object_id=None, metadata={}, file_path=None)
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def write(ds_object):
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logging.debug('datastore.write')
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if ds_object.object_id:
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dbus_helpers.update(ds_object.object_id,
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ds_object.metadata,
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ds_object.file_path)
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else:
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ds_object.object_id = dbus_helpers.create(ds_object.metadata,
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ds_object.file_path)
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# TODO: register the object for updates
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logging.debug('Written object %s to the datastore.' % ds_object.object_id)
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def find(query):
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object_ids = dbus_helpers.find({})
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objects = []
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for object_id in object_ids:
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objects.append(get(object_id))
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return objects
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