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# Redmine - project management software
# Copyright (C) 2006-2011 Jean-Philippe Lang
#
# 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 Street, Fifth Floor, Boston, MA 02110-1301, USA.
class IssueRelation < ActiveRecord::Base
belongs_to :issue_from, :class_name => 'Issue', :foreign_key => 'issue_from_id'
belongs_to :issue_to, :class_name => 'Issue', :foreign_key => 'issue_to_id'
TYPE_RELATES = "relates"
TYPE_DUPLICATES = "duplicates"
TYPE_DUPLICATED = "duplicated"
TYPE_BLOCKS = "blocks"
TYPE_BLOCKED = "blocked"
TYPE_PRECEDES = "precedes"
TYPE_FOLLOWS = "follows"
TYPES = { TYPE_RELATES => { :name => :label_relates_to, :sym_name => :label_relates_to, :order => 1, :sym => TYPE_RELATES },
TYPE_DUPLICATES => { :name => :label_duplicates, :sym_name => :label_duplicated_by, :order => 2, :sym => TYPE_DUPLICATED },
TYPE_DUPLICATED => { :name => :label_duplicated_by, :sym_name => :label_duplicates, :order => 3, :sym => TYPE_DUPLICATES, :reverse => TYPE_DUPLICATES },
TYPE_BLOCKS => { :name => :label_blocks, :sym_name => :label_blocked_by, :order => 4, :sym => TYPE_BLOCKED },
TYPE_BLOCKED => { :name => :label_blocked_by, :sym_name => :label_blocks, :order => 5, :sym => TYPE_BLOCKS, :reverse => TYPE_BLOCKS },
TYPE_PRECEDES => { :name => :label_precedes, :sym_name => :label_follows, :order => 6, :sym => TYPE_FOLLOWS },
TYPE_FOLLOWS => { :name => :label_follows, :sym_name => :label_precedes, :order => 7, :sym => TYPE_PRECEDES, :reverse => TYPE_PRECEDES }
}.freeze
validates_presence_of :issue_from, :issue_to, :relation_type
validates_inclusion_of :relation_type, :in => TYPES.keys
validates_numericality_of :delay, :allow_nil => true
validates_uniqueness_of :issue_to_id, :scope => :issue_from_id
attr_protected :issue_from_id, :issue_to_id
def after_initialize
if new_record?
if relation_type.blank?
self.relation_type = IssueRelation::TYPE_RELATES
end
end
end
def validate
if issue_from && issue_to
errors.add :issue_to_id, :invalid if issue_from_id == issue_to_id
errors.add :issue_to_id, :not_same_project unless issue_from.project_id == issue_to.project_id || Setting.cross_project_issue_relations?
#detect circular dependencies depending wether the relation should be reversed
if TYPES.has_key?(relation_type) && TYPES[relation_type][:reverse]
errors.add_to_base :circular_dependency if issue_from.all_dependent_issues.include? issue_to
else
errors.add_to_base :circular_dependency if issue_to.all_dependent_issues.include? issue_from
end
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)
end
end
def other_issue(issue)
(self.issue_from_id == issue.id) ? issue_to : issue_from
end
# Returns the relation type for +issue+
def relation_type_for(issue)
if TYPES[relation_type]
if self.issue_from_id == issue.id
relation_type
else
TYPES[relation_type][:sym]
end
end
end
def label_for(issue)
TYPES[relation_type] ? TYPES[relation_type][(self.issue_from_id == issue.id) ? :name : :sym_name] : :unknow
end
def before_save
reverse_if_needed
if TYPE_PRECEDES == relation_type
self.delay ||= 0
else
self.delay = nil
end
set_issue_to_dates
end
def set_issue_to_dates
soonest_start = self.successor_soonest_start
if soonest_start && issue_to
issue_to.reschedule_after(soonest_start)
end
end
def successor_soonest_start
if (TYPE_PRECEDES == self.relation_type) && delay && issue_from && (issue_from.start_date || issue_from.due_date)
(issue_from.due_date || issue_from.start_date) + 1 + delay
end
end
def <=>(relation)
TYPES[self.relation_type][:order] <=> TYPES[relation.relation_type][:order]
end
private
# Reverses the relation if needed so that it gets stored in the proper way
def reverse_if_needed
if TYPES.has_key?(relation_type) && TYPES[relation_type][:reverse]
issue_tmp = issue_to
self.issue_to = issue_from
self.issue_from = issue_tmp
self.relation_type = TYPES[relation_type][:reverse]
end
end
end
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