541 lines
28 KiB
Python
541 lines
28 KiB
Python
#
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# Gramps - a GTK+/GNOME based genealogy program
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#
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# Copyright (C) 2000-2007 Donald N. Allingham
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# Copyright (C) 2009 Gary Burton
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# Copyright (C) 2011 Tim G L Lyons
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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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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#
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# $Id$
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"""
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A utility to make a best guess if a person is alive. This is used to provide
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privacy in reports and exports.
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"""
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#-------------------------------------------------------------------------
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#
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# Standard python modules
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#
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#-------------------------------------------------------------------------
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import logging
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LOG = logging.getLogger(".gen.utils.alive")
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#-------------------------------------------------------------------------
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#
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# Gramps modules
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#
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#-------------------------------------------------------------------------
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from ..display.name import displayer as name_displayer
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from ..lib.date import Date, Today
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from ..errors import DatabaseError
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from ..const import GRAMPS_LOCALE as glocale
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_ = glocale.translation.sgettext
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#-------------------------------------------------------------------------
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#
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# Constants from config .ini keys
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#
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#-------------------------------------------------------------------------
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# cache values; use refresh_constants() if they change
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try:
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from ..config import config
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_MAX_AGE_PROB_ALIVE = config.get('behavior.max-age-prob-alive')
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_MAX_SIB_AGE_DIFF = config.get('behavior.max-sib-age-diff')
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_AVG_GENERATION_GAP = config.get('behavior.avg-generation-gap')
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except ImportError:
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# Utils used as module not part of GRAMPS
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_MAX_AGE_PROB_ALIVE = 110
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_MAX_SIB_AGE_DIFF = 20
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_AVG_GENERATION_GAP = 20
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#-------------------------------------------------------------------------
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#
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# ProbablyAlive class
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#
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#-------------------------------------------------------------------------
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class ProbablyAlive(object):
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"""
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An object to hold the parameters for considering someone alive.
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"""
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def __init__(self,
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db,
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max_sib_age_diff=None,
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max_age_prob_alive=None,
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avg_generation_gap=None):
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self.db = db
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if max_sib_age_diff is None:
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max_sib_age_diff = _MAX_SIB_AGE_DIFF
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if max_age_prob_alive is None:
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max_age_prob_alive = _MAX_AGE_PROB_ALIVE
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if avg_generation_gap is None:
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avg_generation_gap = _AVG_GENERATION_GAP
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self.MAX_SIB_AGE_DIFF = max_sib_age_diff
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self.MAX_AGE_PROB_ALIVE = max_age_prob_alive
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self.AVG_GENERATION_GAP = avg_generation_gap
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def probably_alive_range(self, person, is_spouse=False):
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# FIXME: some of these computed dates need to be a span. For
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# example, if a person could be born +/- 20 yrs around
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# a date then it should be a span, and yr_offset should
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# deal with it as well ("between 1920 and 1930" + 10 =
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# "between 1930 and 1940")
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if person is None:
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return (None, None, "", None)
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birth_ref = person.get_birth_ref()
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death_ref = person.get_death_ref()
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death_date = None
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birth_date = None
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explain = ""
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if death_ref and death_ref.get_role().is_primary():
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if death_ref:
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death = self.db.get_event_from_handle(death_ref.ref)
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if death and death.get_date_object().is_valid():
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death_date = death.get_date_object()
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elif death: # has a death event, but it is no valid:
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death_date = Today() # before today
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death_date.set_modifier(Date.MOD_BEFORE)
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explain = _("death event without date")
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# Look for Cause Of Death, Burial or Cremation events.
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# These are fairly good indications that someone's not alive.
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if not death_date:
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for ev_ref in person.get_primary_event_ref_list():
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if ev_ref:
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ev = self.db.get_event_from_handle(ev_ref.ref)
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if ev and ev.type.is_death_fallback():
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death_date = ev.get_date_object()
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if death_date.is_valid():
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explain = _("death-related evidence")
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else:
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death_date = Today() # before today
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death_date.set_modifier(Date.MOD_BEFORE)
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explain = _("death-related evidence without date")
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# If they were born within X years before current year then
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# assume they are alive (we already know they are not dead).
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if not birth_date:
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if birth_ref and birth_ref.get_role().is_primary():
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birth = self.db.get_event_from_handle(birth_ref.ref)
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if birth and birth.get_date_object().get_start_date() != Date.EMPTY:
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birth_date = birth.get_date_object()
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# Look for Baptism, etc events.
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# These are fairly good indications that someone's birth.
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if not birth_date:
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for ev_ref in person.get_primary_event_ref_list():
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ev = self.db.get_event_from_handle(ev_ref.ref)
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if ev and ev.type.is_birth_fallback():
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birth_date = ev.get_date_object()
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explain = _("birth-related evidence")
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if not birth_date and death_date:
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# person died more than MAX after current year
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birth_date = death_date.copy_offset_ymd(year=-self.MAX_AGE_PROB_ALIVE)
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explain = _("death date")
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if not death_date and birth_date:
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# person died more than MAX after current year
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death_date = birth_date.copy_offset_ymd(year=self.MAX_AGE_PROB_ALIVE)
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explain = _("birth date")
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if death_date and birth_date:
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return (birth_date, death_date, explain, person) # direct self evidence
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# Neither birth nor death events are available. Try looking
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# at siblings. If a sibling was born more than X years past,
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# or more than Z future, then probably this person is
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# not alive. If the sibling died more than X years
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# past, or more than X years future, then probably not alive.
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family_list = person.get_parent_family_handle_list()
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for family_handle in family_list:
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family = self.db.get_family_from_handle(family_handle)
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if family is None:
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continue
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for child_ref in family.get_child_ref_list():
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child_handle = child_ref.ref
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child = self.db.get_person_from_handle(child_handle)
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if child is None:
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continue
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# Go through once looking for direct evidence:
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for ev_ref in child.get_primary_event_ref_list():
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ev = self.db.get_event_from_handle(ev_ref.ref)
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if ev and ev.type.is_birth():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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# if sibling birth date too far away, then not alive:
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year = dobj.get_year()
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if year != 0:
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# sibling birth date
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return (Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF),
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Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF + self.MAX_AGE_PROB_ALIVE),
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_("sibling birth date"),
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child)
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elif ev and ev.type.is_death():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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# if sibling death date too far away, then not alive:
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year = dobj.get_year()
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if year != 0:
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# sibling death date
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return (Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF - self.MAX_AGE_PROB_ALIVE),
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Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF - self.MAX_AGE_PROB_ALIVE
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+ self.MAX_AGE_PROB_ALIVE),
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_("sibling death date"),
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child)
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# Go through again looking for fallback:
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for ev_ref in child.get_primary_event_ref_list():
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ev = self.db.get_event_from_handle(ev_ref.ref)
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if ev and ev.type.is_birth_fallback():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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# if sibling birth date too far away, then not alive:
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year = dobj.get_year()
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if year != 0:
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# sibling birth date
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return (Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF),
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Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF + self.MAX_AGE_PROB_ALIVE),
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_("sibling birth-related date"),
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child)
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elif ev and ev.type.is_death_fallback():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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# if sibling death date too far away, then not alive:
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year = dobj.get_year()
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if year != 0:
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# sibling death date
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return (Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF - self.MAX_AGE_PROB_ALIVE),
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Date().copy_ymd(year - self.MAX_SIB_AGE_DIFF - self.MAX_AGE_PROB_ALIVE + self.MAX_AGE_PROB_ALIVE),
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_("sibling death-related date"),
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child)
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if not is_spouse: # if you are not in recursion, let's recurse:
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for family_handle in person.get_family_handle_list():
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family = self.db.get_family_from_handle(family_handle)
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if family:
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mother_handle = family.get_mother_handle()
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father_handle = family.get_father_handle()
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if mother_handle == person.handle and father_handle:
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father = self.db.get_person_from_handle(father_handle)
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date1, date2, explain, other = self.probably_alive_range(father, is_spouse=True)
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if date1 and date1.get_year() != 0:
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return (Date().copy_ymd(date1.get_year() - self.AVG_GENERATION_GAP),
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Date().copy_ymd(date1.get_year() - self.AVG_GENERATION_GAP + self.MAX_AGE_PROB_ALIVE),
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_("a spouse's birth-related date, ") + explain, other)
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elif date2 and date2.get_year() != 0:
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return (Date().copy_ymd(date2.get_year() + self.AVG_GENERATION_GAP - self.MAX_AGE_PROB_ALIVE),
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Date().copy_ymd(date2.get_year() + self.AVG_GENERATION_GAP),
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_("a spouse's death-related date, ") + explain, other)
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elif father_handle == person.handle and mother_handle:
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mother = self.db.get_person_from_handle(mother_handle)
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date1, date2, explain, other = self.probably_alive_range(mother, is_spouse=True)
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if date1 and date1.get_year() != 0:
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return (Date().copy_ymd(date1.get_year() - self.AVG_GENERATION_GAP),
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Date().copy_ymd(date1.get_year() - self.AVG_GENERATION_GAP + self.MAX_AGE_PROB_ALIVE),
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_("a spouse's birth-related date, ") + explain, other)
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elif date2 and date2.get_year() != 0:
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return (Date().copy_ymd(date2.get_year() + self.AVG_GENERATION_GAP - self.MAX_AGE_PROB_ALIVE),
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Date().copy_ymd(date2.get_year() + self.AVG_GENERATION_GAP),
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_("a spouse's death-related date, ") + explain, other)
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# Let's check the family events and see if we find something
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for ref in family.get_event_ref_list():
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if ref:
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event = self.db.get_event_from_handle(ref.ref)
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if event:
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date = event.get_date_object()
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year = date.get_year()
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if year != 0:
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other = None
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if person.handle == mother_handle and father_handle:
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other = self.db.get_person_from_handle(father_handle)
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elif person.handle == father_handle and mother_handle:
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other = self.db.get_person_from_handle(mother_handle)
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return (Date().copy_ymd(year - self.AVG_GENERATION_GAP),
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Date().copy_ymd(year - self.AVG_GENERATION_GAP +
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self.MAX_AGE_PROB_ALIVE),
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_("event with spouse"), other)
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# Try looking for descendants that were born more than a lifespan
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# ago.
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def descendants_too_old (person, years):
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for family_handle in person.get_family_handle_list():
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family = self.db.get_family_from_handle(family_handle)
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if not family:
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# can happen with LivingProxyDb(PrivateProxyDb(db))
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continue
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for child_ref in family.get_child_ref_list():
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child_handle = child_ref.ref
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child = self.db.get_person_from_handle(child_handle)
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child_birth_ref = child.get_birth_ref()
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if child_birth_ref:
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child_birth = self.db.get_event_from_handle(child_birth_ref.ref)
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dobj = child_birth.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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d = Date(dobj)
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val = d.get_start_date()
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val = d.get_year() - years
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d.set_year(val)
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return (d, d.copy_offset_ymd(self.MAX_AGE_PROB_ALIVE),
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_("descendant birth date"),
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child)
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child_death_ref = child.get_death_ref()
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if child_death_ref:
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child_death = self.db.get_event_from_handle(child_death_ref.ref)
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dobj = child_death.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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return (dobj.copy_offset_ymd(- self.AVG_GENERATION_GAP),
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dobj.copy_offset_ymd(- self.AVG_GENERATION_GAP + self.MAX_AGE_PROB_ALIVE),
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_("descendant death date"),
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child)
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date1, date2, explain, other = descendants_too_old (child, years + self.AVG_GENERATION_GAP)
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if date1 and date2:
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return date1, date2, explain, other
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# Check fallback data:
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for ev_ref in child.get_primary_event_ref_list():
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ev = self.db.get_event_from_handle(ev_ref.ref)
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if ev and ev.type.is_birth_fallback():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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d = Date(dobj)
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val = d.get_start_date()
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val = d.get_year() - years
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d.set_year(val)
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return (d, d.copy_offset_ymd(self.MAX_AGE_PROB_ALIVE),
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_("descendant birth-related date"),
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child)
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elif ev and ev.type.is_death_fallback():
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dobj = ev.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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return (dobj.copy_offset_ymd(- self.AVG_GENERATION_GAP),
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dobj.copy_offset_ymd(- self.AVG_GENERATION_GAP + self.MAX_AGE_PROB_ALIVE),
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_("descendant death-related date"),
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child)
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return (None, None, "", None)
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# If there are descendants that are too old for the person to have
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# been alive in the current year then they must be dead.
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date1, date2, explain, other = None, None, "", None
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try:
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date1, date2, explain, other = descendants_too_old(person, self.AVG_GENERATION_GAP)
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except RuntimeError:
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raise DatabaseError(
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_("Database error: %s is defined as his or her own ancestor") %
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name_displayer.display(person))
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if date1 and date2:
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return (date1, date2, explain, other)
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def ancestors_too_old(person, year):
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family_handle = person.get_main_parents_family_handle()
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if family_handle:
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family = self.db.get_family_from_handle(family_handle)
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if not family:
|
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# can happen with LivingProxyDb(PrivateProxyDb(db))
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return (None, None, "", None)
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father_handle = family.get_father_handle()
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if father_handle:
|
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father = self.db.get_person_from_handle(father_handle)
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father_birth_ref = father.get_birth_ref()
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if father_birth_ref and father_birth_ref.get_role().is_primary():
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father_birth = self.db.get_event_from_handle(
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father_birth_ref.ref)
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dobj = father_birth.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
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return (dobj.copy_offset_ymd(- year),
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dobj.copy_offset_ymd(- year + self.MAX_AGE_PROB_ALIVE),
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_("ancestor birth date"),
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father)
|
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father_death_ref = father.get_death_ref()
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if father_death_ref and father_death_ref.get_role().is_primary():
|
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father_death = self.db.get_event_from_handle(
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father_death_ref.ref)
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dobj = father_death.get_date_object()
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if dobj.get_start_date() != Date.EMPTY:
|
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return (dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE),
|
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dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE + self.MAX_AGE_PROB_ALIVE),
|
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_("ancestor death date"),
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father)
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|
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# Check fallback data:
|
|
for ev_ref in father.get_primary_event_ref_list():
|
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ev = self.db.get_event_from_handle(ev_ref.ref)
|
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if ev and ev.type.is_birth_fallback():
|
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dobj = ev.get_date_object()
|
|
if dobj.get_start_date() != Date.EMPTY:
|
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return (dobj.copy_offset_ymd(- year),
|
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dobj.copy_offset_ymd(- year + self.MAX_AGE_PROB_ALIVE),
|
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_("ancestor birth-related date"),
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father)
|
|
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elif ev and ev.type.is_death_fallback():
|
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dobj = ev.get_date_object()
|
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if dobj.get_start_date() != Date.EMPTY:
|
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return (dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE),
|
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dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE + self.MAX_AGE_PROB_ALIVE),
|
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_("ancestor death-related date"),
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father)
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date1, date2, explain, other = ancestors_too_old (father, year - self.AVG_GENERATION_GAP)
|
|
if date1 and date2:
|
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return date1, date2, explain, other
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|
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mother_handle = family.get_mother_handle()
|
|
if mother_handle:
|
|
mother = self.db.get_person_from_handle(mother_handle)
|
|
mother_birth_ref = mother.get_birth_ref()
|
|
if mother_birth_ref and mother_birth_ref.get_role().is_primary():
|
|
mother_birth = self.db.get_event_from_handle(mother_birth_ref.ref)
|
|
dobj = mother_birth.get_date_object()
|
|
if dobj.get_start_date() != Date.EMPTY:
|
|
return (dobj.copy_offset_ymd(- year),
|
|
dobj.copy_offset_ymd(- year + self.MAX_AGE_PROB_ALIVE),
|
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_("ancestor birth date"),
|
|
mother)
|
|
mother_death_ref = mother.get_death_ref()
|
|
if mother_death_ref and mother_death_ref.get_role().is_primary():
|
|
mother_death = self.db.get_event_from_handle(
|
|
mother_death_ref.ref)
|
|
dobj = mother_death.get_date_object()
|
|
if dobj.get_start_date() != Date.EMPTY:
|
|
return (dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE),
|
|
dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE + self.MAX_AGE_PROB_ALIVE),
|
|
_("ancestor death date"),
|
|
mother)
|
|
|
|
# Check fallback data:
|
|
for ev_ref in mother.get_primary_event_ref_list():
|
|
ev = self.db.get_event_from_handle(ev_ref.ref)
|
|
if ev and ev.type.is_birth_fallback():
|
|
dobj = ev.get_date_object()
|
|
if dobj.get_start_date() != Date.EMPTY:
|
|
return (dobj.copy_offset_ymd(- year),
|
|
dobj.copy_offset_ymd(- year + self.MAX_AGE_PROB_ALIVE),
|
|
_("ancestor birth-related date"),
|
|
mother)
|
|
|
|
elif ev and ev.type.is_death_fallback():
|
|
dobj = ev.get_date_object()
|
|
if dobj.get_start_date() != Date.EMPTY:
|
|
return (dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE),
|
|
dobj.copy_offset_ymd(- year - self.MAX_AGE_PROB_ALIVE + self.MAX_AGE_PROB_ALIVE),
|
|
_("ancestor death-related date"),
|
|
mother)
|
|
|
|
date1, date2, explain, other = ancestors_too_old (mother, year - self.AVG_GENERATION_GAP)
|
|
if date1 and date2:
|
|
return (date1, date2, explain, other)
|
|
|
|
return (None, None, "", None)
|
|
|
|
# If there are ancestors that would be too old in the current year
|
|
# then assume our person must be dead too.
|
|
date1, date2, explain, other = ancestors_too_old (person, - self.AVG_GENERATION_GAP)
|
|
if date1 and date2:
|
|
return (date1, date2, explain, other)
|
|
|
|
# If we can't find any reason to believe that they are dead we
|
|
# must assume they are alive.
|
|
|
|
return (None, None, "", None)
|
|
|
|
#-------------------------------------------------------------------------
|
|
#
|
|
# probably_alive
|
|
#
|
|
#-------------------------------------------------------------------------
|
|
def probably_alive(person, db,
|
|
current_date=None,
|
|
limit=0,
|
|
max_sib_age_diff=None,
|
|
max_age_prob_alive=None,
|
|
avg_generation_gap=None,
|
|
return_range=False):
|
|
"""
|
|
Return true if the person may be alive on current_date.
|
|
|
|
This works by a process of elimination. If we can't find a good
|
|
reason to believe that someone is dead then we assume they must
|
|
be alive.
|
|
|
|
:param current_date: a date object that is not estimated or modified
|
|
(defaults to today)
|
|
:param limit: number of years to check beyond death_date
|
|
:param max_sib_age_diff: maximum sibling age difference, in years
|
|
:param max_age_prob_alive: maximum age of a person, in years
|
|
:param avg_generation_gap: average generation gap, in years
|
|
"""
|
|
# First, get the real database to use all people
|
|
# for determining alive status:
|
|
basedb = db.basedb
|
|
# Now, we create a wrapper for doing work:
|
|
pb = ProbablyAlive(basedb, max_sib_age_diff,
|
|
max_age_prob_alive,
|
|
avg_generation_gap)
|
|
birth, death, explain, relative = pb.probably_alive_range(person)
|
|
if current_date is None:
|
|
current_date = Today()
|
|
if not birth or not death:
|
|
# no evidence, must consider alive
|
|
return (True, None, None, _("no evidence"), None)
|
|
# must have dates from here:
|
|
if limit:
|
|
death += limit # add these years to death
|
|
# Finally, check to see if current_date is between dates
|
|
result = (current_date.match(birth, ">=") and
|
|
current_date.match(death, "<<"))
|
|
if return_range:
|
|
return (result, birth, death, explain, relative)
|
|
else:
|
|
return result
|
|
|
|
def probably_alive_range(person, db,
|
|
max_sib_age_diff=None,
|
|
max_age_prob_alive=None,
|
|
avg_generation_gap=None):
|
|
"""
|
|
Computes estimated birth and death dates.
|
|
Returns: (birth_date, death_date, explain_text, related_person)
|
|
"""
|
|
# First, find the real database to use all people
|
|
# for determining alive status:
|
|
from ..proxy.proxybase import ProxyDbBase
|
|
basedb = db
|
|
while isinstance(basedb, ProxyDbBase):
|
|
basedb = basedb.db
|
|
# Now, we create a wrapper for doing work:
|
|
pb = ProbablyAlive(basedb, max_sib_age_diff,
|
|
max_age_prob_alive, avg_generation_gap)
|
|
return pb.probably_alive_range(person)
|
|
|
|
def update_constants():
|
|
"""
|
|
Used to update the constants that are cached in this module.
|
|
"""
|
|
from ..config import config
|
|
global _MAX_AGE_PROB_ALIVE, _MAX_SIB_AGE_DIFF, _AVG_GENERATION_GAP
|
|
_MAX_AGE_PROB_ALIVE = config.get('behavior.max-age-prob-alive')
|
|
_MAX_SIB_AGE_DIFF = config.get('behavior.max-sib-age-diff')
|
|
_AVG_GENERATION_GAP = config.get('behavior.avg-generation-gap')
|