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# frozen_string_literal: true
class UpdateResourceStateEventsConstraintToSupportEpicId < ActiveRecord :: Migration [ 6 . 0 ]
include Gitlab :: Database :: MigrationHelpers
DOWNTIME = false
disable_ddl_transaction!
OLD_CONSTRAINT = 'resource_state_events_must_belong_to_issue_or_merge_request'
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CONSTRAINT_NAME = 'resource_state_events_must_belong_to_issue_or_merge_request_or_'
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def up
remove_check_constraint :resource_state_events , OLD_CONSTRAINT
add_check_constraint :resource_state_events , " (issue_id != NULL AND merge_request_id IS NULL AND epic_id IS NULL) OR " \
" (issue_id IS NULL AND merge_request_id != NULL AND epic_id IS NULL) OR " \
" (issue_id IS NULL AND merge_request_id IS NULL AND epic_id != NULL) " , CONSTRAINT_NAME
end
def down
remove_check_constraint :resource_state_events , CONSTRAINT_NAME
add_check_constraint :resource_state_events , '(issue_id != NULL AND merge_request_id IS NULL) OR (merge_request_id != NULL AND issue_id IS NULL)' , OLD_CONSTRAINT
end
end