121 lines
4.2 KiB
Ruby
121 lines
4.2 KiB
Ruby
class ImproveAsvGroupPerformance < ActiveRecord::Migration[5.1]
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tag :postdeploy
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def up
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# find the groups first and then worry about group memberships
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self.connection.execute %(CREATE OR REPLACE VIEW #{connection.quote_table_name('assignment_student_visibilities')} AS
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SELECT DISTINCT a.id as assignment_id,
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e.user_id as user_id,
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c.id as course_id
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FROM #{Assignment.quoted_table_name} a
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JOIN #{Course.quoted_table_name} c
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ON a.context_id = c.id
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AND a.context_type = 'Course'
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JOIN #{Enrollment.quoted_table_name} e
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ON e.course_id = c.id
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AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
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AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
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JOIN #{CourseSection.quoted_table_name} cs
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ON cs.course_id = c.id
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AND e.course_section_id = cs.id
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LEFT JOIN #{Group.quoted_table_name} g
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ON g.context_type = 'Course'
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AND g.context_id = c.id
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AND g.workflow_state = 'available'
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LEFT JOIN #{GroupMembership.quoted_table_name} gm
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ON gm.user_id = e.user_id
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AND gm.workflow_state = 'accepted'
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AND gm.group_id = g.id
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LEFT JOIN #{AssignmentOverrideStudent.quoted_table_name} aos
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ON aos.assignment_id = a.id
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AND aos.user_id = e.user_id
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AND aos.workflow_state = 'active'
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LEFT JOIN #{AssignmentOverride.quoted_table_name} ao
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ON ao.assignment_id = a.id
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AND ao.workflow_state = 'active'
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AND (
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(ao.set_type = 'CourseSection' AND ao.set_id = cs.id)
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OR (ao.set_type = 'ADHOC' AND ao.set_id IS NULL AND ao.id = aos.assignment_override_id)
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OR (ao.set_type = 'Group' AND ao.set_id = g.id AND gm.id IS NOT NULL)
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)
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LEFT JOIN #{Submission.quoted_table_name} s
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ON s.user_id = e.user_id
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AND s.assignment_id = a.id
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AND s.workflow_state NOT IN ('deleted', 'unsubmitted')
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WHERE a.workflow_state NOT IN ('deleted','unpublished')
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AND(
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( a.only_visible_to_overrides = 'true' AND (ao.id IS NOT NULL OR s.id IS NOT NULL))
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OR (COALESCE(a.only_visible_to_overrides, 'false') = 'false')
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)
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)
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end
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def down
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self.connection.execute %(CREATE OR REPLACE VIEW #{connection.quote_table_name('assignment_student_visibilities')} AS
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SELECT DISTINCT a.id as assignment_id,
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e.user_id as user_id,
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c.id as course_id
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FROM #{Assignment.quoted_table_name} a
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JOIN #{Course.quoted_table_name} c
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ON a.context_id = c.id
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AND a.context_type = 'Course'
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JOIN #{Enrollment.quoted_table_name} e
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ON e.course_id = c.id
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AND e.type IN ('StudentEnrollment', 'StudentViewEnrollment')
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AND e.workflow_state NOT IN ('deleted', 'rejected', 'inactive')
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JOIN #{CourseSection.quoted_table_name} cs
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ON cs.course_id = c.id
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AND e.course_section_id = cs.id
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LEFT JOIN #{GroupMembership.quoted_table_name} gm
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ON gm.user_id = e.user_id
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AND gm.workflow_state = 'accepted'
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LEFT JOIN #{Group.quoted_table_name} g
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ON g.context_type = 'Course'
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AND g.context_id = c.id
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AND g.workflow_state = 'available'
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AND gm.group_id = g.id
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LEFT JOIN #{AssignmentOverrideStudent.quoted_table_name} aos
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ON aos.assignment_id = a.id
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AND aos.user_id = e.user_id
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AND aos.workflow_state = 'active'
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LEFT JOIN #{AssignmentOverride.quoted_table_name} ao
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ON ao.assignment_id = a.id
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AND ao.workflow_state = 'active'
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AND (
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(ao.set_type = 'CourseSection' AND ao.set_id = cs.id)
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OR (ao.set_type = 'ADHOC' AND ao.set_id IS NULL AND ao.id = aos.assignment_override_id)
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OR (ao.set_type = 'Group' AND ao.set_id = g.id)
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)
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LEFT JOIN #{Submission.quoted_table_name} s
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ON s.user_id = e.user_id
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AND s.assignment_id = a.id
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AND s.workflow_state NOT IN ('deleted', 'unsubmitted')
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WHERE a.workflow_state NOT IN ('deleted','unpublished')
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AND(
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( a.only_visible_to_overrides = 'true' AND (ao.id IS NOT NULL OR s.id IS NOT NULL))
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OR (COALESCE(a.only_visible_to_overrides, 'false') = 'false')
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)
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)
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end
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end
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