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# redMine - project management software
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# Copyright (C) 2006-2007 Jean-Philippe Lang
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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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class IssueRelation < ActiveRecord::Base
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belongs_to :issue_from, :class_name => 'Issue', :foreign_key => 'issue_from_id'
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belongs_to :issue_to, :class_name => 'Issue', :foreign_key => 'issue_to_id'
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TYPE_RELATES = "relates"
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TYPE_DUPLICATES = "duplicates"
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TYPE_DUPLICATED = "duplicated"
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TYPE_BLOCKS = "blocks"
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TYPE_BLOCKED = "blocked"
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TYPE_PRECEDES = "precedes"
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TYPE_FOLLOWS = "follows"
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TYPES = { TYPE_RELATES => { :name => :label_relates_to, :sym_name => :label_relates_to, :order => 1, :sym => TYPE_RELATES },
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TYPE_DUPLICATES => { :name => :label_duplicates, :sym_name => :label_duplicated_by, :order => 2, :sym => TYPE_DUPLICATED },
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TYPE_DUPLICATED => { :name => :label_duplicated_by, :sym_name => :label_duplicates, :order => 3, :sym => TYPE_DUPLICATES, :reverse => TYPE_DUPLICATES },
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TYPE_BLOCKS => { :name => :label_blocks, :sym_name => :label_blocked_by, :order => 4, :sym => TYPE_BLOCKED },
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TYPE_BLOCKED => { :name => :label_blocked_by, :sym_name => :label_blocks, :order => 5, :sym => TYPE_BLOCKS, :reverse => TYPE_BLOCKS },
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TYPE_PRECEDES => { :name => :label_precedes, :sym_name => :label_follows, :order => 6, :sym => TYPE_FOLLOWS },
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TYPE_FOLLOWS => { :name => :label_follows, :sym_name => :label_precedes, :order => 7, :sym => TYPE_PRECEDES, :reverse => TYPE_PRECEDES }
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}.freeze
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validates_presence_of :issue_from, :issue_to, :relation_type
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validates_inclusion_of :relation_type, :in => TYPES.keys
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validates_numericality_of :delay, :allow_nil => true
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validates_uniqueness_of :issue_to_id, :scope => :issue_from_id
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attr_protected :issue_from_id, :issue_to_id
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def validate
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if issue_from && issue_to
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errors.add :issue_to_id, :invalid if issue_from_id == issue_to_id
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errors.add :issue_to_id, :not_same_project unless issue_from.project_id == issue_to.project_id || Setting.cross_project_issue_relations?
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errors.add_to_base :circular_dependency if issue_to.all_dependent_issues.include? issue_from
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errors.add_to_base :cant_link_an_issue_with_a_descendant if issue_from.is_descendant_of?(issue_to) || issue_from.is_ancestor_of?(issue_to)
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end
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end
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def other_issue(issue)
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(self.issue_from_id == issue.id) ? issue_to : issue_from
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end
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# Returns the relation type for +issue+
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def relation_type_for(issue)
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if TYPES[relation_type]
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if self.issue_from_id == issue.id
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relation_type
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else
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TYPES[relation_type][:sym]
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end
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end
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end
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def label_for(issue)
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TYPES[relation_type] ? TYPES[relation_type][(self.issue_from_id == issue.id) ? :name : :sym_name] : :unknow
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end
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def before_save
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reverse_if_needed
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if TYPE_PRECEDES == relation_type
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self.delay ||= 0
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else
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self.delay = nil
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end
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set_issue_to_dates
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end
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def set_issue_to_dates
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soonest_start = self.successor_soonest_start
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if soonest_start && issue_to
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issue_to.reschedule_after(soonest_start)
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end
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end
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def successor_soonest_start
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if (TYPE_PRECEDES == self.relation_type) && delay && issue_from && (issue_from.start_date || issue_from.due_date)
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(issue_from.due_date || issue_from.start_date) + 1 + delay
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end
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end
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def <=>(relation)
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TYPES[self.relation_type][:order] <=> TYPES[relation.relation_type][:order]
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end
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private
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# Reverses the relation if needed so that it gets stored in the proper way
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def reverse_if_needed
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if TYPES.has_key?(relation_type) && TYPES[relation_type][:reverse]
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issue_tmp = issue_to
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self.issue_to = issue_from
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self.issue_from = issue_tmp
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self.relation_type = TYPES[relation_type][:reverse]
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end
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end
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end
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