gramps/gramps2/src/GrampsBSDDB.py

#
# Gramps - a GTK+/GNOME based genealogy program
#
# Copyright (C) 2000-2004  Donald N. Allingham
#
# 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
#

# $Id$

import os

from RelLib import *
from GrampsDbBase import *
from bsddb import dbshelve, db

def find_surname(key,data):
    return str(data[3].get_surname())

def find_idmap(key,data):
    return str(data[1])

def find_eventname(key,data):
    return str(data[1])

#-------------------------------------------------------------------------
#
# GrampsBSDDB
#
#-------------------------------------------------------------------------
class GrampsBSDDB(GrampsDbBase):
    """GRAMPS database object. This object is a base class for other
    objects."""

    def __init__(self):
        """creates a new GrampsDB"""
        GrampsDbBase.__init__(self)

    def load(self,name,callback):
        if self.person_map:
            self.close()

        self.env = db.DBEnv()
        self.env.set_cachesize(0,4*1024*1024) # 2MB
        flags = db.DB_CREATE|db.DB_INIT_MPOOL|db.DB_PRIVATE

        self.undolog = "%s.log" % name
        self.env.open(os.path.dirname(name), flags)
            
        name = os.path.basename(name)
        self.person_map = dbshelve.open(name, dbname="person", dbenv=self.env)
        self.family_map = dbshelve.open(name, dbname="family", dbenv=self.env)
        self.place_map  = dbshelve.open(name, dbname="places", dbenv=self.env)
        self.source_map = dbshelve.open(name, dbname="sources",dbenv=self.env)
        self.media_map  = dbshelve.open(name, dbname="media",  dbenv=self.env)
        self.event_map  = dbshelve.open(name, dbname="events", dbenv=self.env)
        self.metadata   = dbshelve.open(name, dbname="meta",   dbenv=self.env)

        self.surnames = db.DB(self.env)
        self.surnames.set_flags(db.DB_DUP)
        self.surnames.open(name, "surnames", db.DB_HASH, flags=db.DB_CREATE)

        self.id_trans = db.DB(self.env)
        self.id_trans.set_flags(db.DB_DUP)
        self.id_trans.open(name, "idtrans", db.DB_HASH, flags=db.DB_CREATE)

        self.eventnames = db.DB(self.env)
        self.eventnames.set_flags(db.DB_DUP)
        self.eventnames.open(name, "eventnames", db.DB_HASH, flags=db.DB_CREATE)
        self.person_map.associate(self.surnames, find_surname, db.DB_CREATE)
        self.person_map.associate(self.id_trans, find_idmap, db.DB_CREATE)
        self.event_map.associate(self.eventnames, find_eventname, db.DB_CREATE)

        self.undodb = db.DB()
        self.undodb.open(self.undolog, db.DB_RECNO, db.DB_CREATE)
        
        self.bookmarks = self.metadata.get('bookmarks')
        if self.bookmarks == None:
            self.bookmarks = []

        self.genderStats = GenderStats(self.metadata.get('gender_stats'))
        return 1

    def close(self):
        self.person_map.close()
        self.family_map.close()
        self.place_map.close()
        self.source_map.close()
        self.media_map.close()
        self.event_map.close()
        self.metadata['bookmarks'] = self.bookmarks
        self.metadata['gender_stats'] = self.genderStats.save_stats()
        self.metadata.close()
        self.surnames.close()
        self.eventnames.close()
        self.id_trans.close()
        self.env.close()
        self.undodb.close()

        try:
            os.remove(self.undolog)
        except:
            pass
        
        self.person_map = None
        self.family_map = None
        self.place_map  = None
        self.source_map = None
        self.media_map  = None
        self.event_map  = None
        self.surnames   = None
        self.env        = None
        self.metadata   = None

    def get_surnames(self):
        names = self.surnames.keys()
        a = {}
        for name in names:
            a[unicode(name)] = 1
        vals = a.keys()
        vals.sort()
        return vals

    def get_eventnames(self):
        names = self.eventnames.keys()
        a = {}
        for name in names:
            a[unicode(name)] = 1
        vals = a.keys()
        vals.sort()
        return vals

    def remove_person_handle(self,handle,transaction):
        self.genderStats.uncount_person (self.person_map[handle])
        if transaction != None:
            old_data = self.person_map.get(handle)
            transaction.add(PERSON_KEY,handle,old_data)
        self.person_map.delete(handle)

    def remove_source_handle(self,handle,transaction):
        if transaction != None:
            old_data = self.source_map.get(str(handle))
            transaction.add(SOURCE_KEY,handle,old_data)
        self.source_map.delete(str(handle))

    def remove_event_handle(self,handle,transaction):
        if transaction != None:
            old_data = self.event_map.get(str(handle))
            transaction.add(EVENT_KEY,handle,old_data)
        self.event_map.delete(str(handle))