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98 lines
3.3 KiB
98 lines
3.3 KiB
#-- encoding: UTF-8
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#-- copyright
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# OpenProject is a project management system.
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# Copyright (C) 2012-2018 the OpenProject Foundation (OPF)
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License version 3.
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#
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# OpenProject is a fork of ChiliProject, which is a fork of Redmine. The copyright follows:
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# Copyright (C) 2006-2017 Jean-Philippe Lang
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# Copyright (C) 2010-2013 the ChiliProject Team
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#
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# This program is free software; you can redistribute it and/or
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# modify it under the terms of the GNU General Public License
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# as published by the Free Software Foundation; either version 2
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# of the License, or (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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
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#
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# See docs/COPYRIGHT.rdoc for more details.
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#++
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module WorkPackage::SchedulingRules
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extend ActiveSupport::Concern
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def reschedule_after(date)
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WorkPackages::RescheduleService
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.new(user: User.current,
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work_package: self)
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.call(date)
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end
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# Calculates the minimum date that
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# will not violate the precedes relations (max(due date, start date) + delay)
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# of this work package or its ancestors
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# e.g.
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# AP(due_date: 2017/07/24, delay: 1)-precedes-A
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# |
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# parent
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# |
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# BP(due_date: 2017/07/22, delay: 2)-precedes-B
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# |
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# parent
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# |
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# CP(due_date: 2017/07/25, delay: 2)-precedes-C
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#
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# Then soonest_start for:
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# C is 2017/07/27
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# B is 2017/07/25
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# A is 2017/07/25
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def soonest_start
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# Using a hand crafted union here instead of the alternative
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# Relation.from_work_package_or_ancestors(self).follows
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# as the performance of the above would be several orders of magnitude worse on MySql
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sql = Relation.connection.unprepared_statement do
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"((#{ancestors_follows_relations.to_sql}) UNION (#{own_follows_relations.to_sql})) AS relations"
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end
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@soonest_start ||=
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Relation.from(sql)
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.map(&:successor_soonest_start)
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.compact
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.max
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end
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# Returns the time scheduled for this work package.
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#
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# Example:
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# Start Date: 2/26/09, Due Date: 3/04/09, duration => 7
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# Start Date: 2/26/09, Due Date: 2/26/09, duration => 1
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# Start Date: 2/26/09, Due Date: - , duration => 1
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# Start Date: - , Due Date: 2/26/09, duration => 1
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def duration
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if start_date && due_date
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due_date - start_date + 1
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else
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1
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end
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end
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private
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def ancestors_follows_relations
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Relation.where(from_id: self.ancestors_relations.select(:from_id)).follows
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end
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def own_follows_relations
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Relation.where(from_id: self.id).follows
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end
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end
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