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# Copyright (C) 2008, Red Hat, Inc.
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program 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 General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
import os
import sqlite3
from datetime import datetime, timedelta
from sugar.activity import activity
_store = None
class Place(object):
def __init__(self, uri=None):
self.uri = uri
self.title = None
self.bookmark = False
self.visits = 0
self.last_visit = datetime.now()
class SqliteStore(object):
MAX_SEARCH_MATCHES = 20
EXPIRE_DAYS = 30
def __init__(self):
db_path = os.path.join(activity.get_activity_root(),
'data', 'places.db')
self._connection = sqlite3.connect(db_path)
cursor = self._connection.cursor()
cursor.execute('select * from sqlite_master where name == "places"')
if cursor.fetchone() == None:
cursor.execute("""create table places (
uri text,
title text,
bookmark boolean,
visits integer,
last_visit timestamp
);
""")
else:
self._cleanup()
def search(self, text):
cursor = self._connection.cursor()
try:
text = '%' + text + '%'
cursor.execute('select uri, title, bookmark, ' \
'visits, last_visit from places ' \
'where uri like ? or title like ? ' \
'order by visits desc limit 0, ?',
(text, text, self.MAX_SEARCH_MATCHES))
result = [self._place_from_row(row) for row in cursor]
finally:
cursor.close()
return result
def add_place(self, place):
cursor = self._connection.cursor()
try:
cursor.execute('insert into places (uri, title, bookmark, ' \
'visits, last_visit) ' \
'values (?, ?, ?, ?, ?)', \
(place.uri, place.title, place.bookmark,
place.visits, place.last_visit))
self._connection.commit()
finally:
cursor.close()
def lookup_place(self, uri):
cursor = self._connection.cursor()
try:
cursor.execute('select uri, title, bookmark, visits, ' \
'last_visit from places where uri=?', (uri,))
row = cursor.fetchone()
if row:
return self._place_from_row(row)
else:
return None
finally:
cursor.close()
def update_place(self, place):
cursor = self._connection.cursor()
try:
cursor.execute('update places set title=?, '
'visits=?, last_visit=?, bookmark=? where uri=?',
(place.title, place.visits,
place.last_visit, place.bookmark, place.uri))
self._connection.commit()
finally:
cursor.close()
def _place_from_row(self, row):
place = Place()
place.uri, place.title, place.bookmark, \
place.visits, place.last_visit = row
return place
def _cleanup(self):
cursor = self._connection.cursor()
try:
date = datetime.now() - timedelta(days=self.EXPIRE_DAYS)
cursor.execute('delete from places where last_visit < ?', (date,))
self._connection.commit()
finally:
cursor.close()
def get_store():
global _store
if _store == None:
_store = SqliteStore()
return _store
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