liquid_feedback_core

view update/core-update.v3.0.0-v3.0.1.sql @ 593:e7f772ca0621

Removed an index on table "initiative"
author jbe
date Sat Dec 08 01:37:23 2018 +0100 (20 months ago)
parents 044a2b65c707
children
line source
1 -- NOTICE: This update script disables the "no_reserve_beat_path" setting for
2 -- all policies. If this is not intended, please edit this script
3 -- before applying it to your database.
5 BEGIN;
7 CREATE OR REPLACE VIEW "liquid_feedback_version" AS
8 SELECT * FROM (VALUES ('3.0.1', 3, 0, 1))
9 AS "subquery"("string", "major", "minor", "revision");
11 ALTER TABLE "policy" ALTER COLUMN "no_reverse_beat_path" SET DEFAULT FALSE;
13 UPDATE "policy" SET "no_reverse_beat_path" = FALSE; -- recommended
15 COMMENT ON COLUMN "policy"."no_reverse_beat_path" IS 'EXPERIMENTAL FEATURE: Causes initiatives with "reverse_beat_path" flag to not be "eligible", thus disallowing them to be winner. See comment on column "initiative"."reverse_beat_path". This option ensures both that a winning initiative is never tied in a (weak) condorcet paradox with the status quo and a winning initiative always beats the status quo directly with a simple majority.';
17 COMMENT ON COLUMN "policy"."no_multistage_majority" IS 'EXPERIMENTAL FEATURE: Causes initiatives with "multistage_majority" flag to not be "eligible", thus disallowing them to be winner. See comment on column "initiative"."multistage_majority". This disqualifies initiatives which could cause an instable result. An instable result in this meaning is a result such that repeating the ballot with same preferences but with the winner of the first ballot as status quo would lead to a different winner in the second ballot. If there are no direct majorities required for the winner, or if in direct comparison only simple majorities are required and "no_reverse_beat_path" is true, then results are always stable and this flag does not have any effect on the winner (but still affects the "eligible" flag of an "initiative").';
19 ALTER TABLE "initiative" ADD COLUMN "first_preference_votes" INT4;
21 ALTER TABLE "initiative" DROP CONSTRAINT "non_admitted_initiatives_cant_contain_voting_results";
22 ALTER TABLE "initiative" ADD CONSTRAINT "non_admitted_initiatives_cant_contain_voting_results" CHECK (
23 ( "admitted" NOTNULL AND "admitted" = TRUE ) OR
24 ( "first_preference_votes" ISNULL AND
25 "positive_votes" ISNULL AND "negative_votes" ISNULL AND
26 "direct_majority" ISNULL AND "indirect_majority" ISNULL AND
27 "schulze_rank" ISNULL AND
28 "better_than_status_quo" ISNULL AND "worse_than_status_quo" ISNULL AND
29 "reverse_beat_path" ISNULL AND "multistage_majority" ISNULL AND
30 "eligible" ISNULL AND "winner" ISNULL AND "rank" ISNULL ) );
32 COMMENT ON COLUMN "initiative"."first_preference_votes" IS 'Number of direct and delegating voters who ranked this initiative as their first choice';
33 COMMENT ON COLUMN "initiative"."positive_votes" IS 'Number of direct and delegating voters who ranked this initiative better than the status quo';
34 COMMENT ON COLUMN "initiative"."negative_votes" IS 'Number of direct and delegating voters who ranked this initiative worse than the status quo';
36 -- UPDATE TABLE "vote" SET "grade" = 0 WHERE "grade" ISNULL; -- should not be necessary
37 ALTER TABLE "vote" ALTER COLUMN "grade" SET NOT NULL;
39 ALTER TABLE "vote" ADD COLUMN "first_preference" BOOLEAN;
41 ALTER TABLE "vote" ADD
42 CONSTRAINT "first_preference_flag_only_set_on_positive_grades"
43 CHECK ("grade" > 0 OR "first_preference" ISNULL);
45 COMMENT ON COLUMN "vote"."first_preference" IS 'Value is automatically set after voting is finished. For positive grades, this value is set to true for the highest (i.e. best) grade.';
47 INSERT INTO "temporary_transaction_data" ("key", "value")
48 VALUES ('override_protection_triggers', TRUE::TEXT);
50 UPDATE "vote" SET "first_preference" = "subquery"."first_preference"
51 FROM (
52 SELECT
53 "vote"."initiative_id",
54 "vote"."member_id",
55 CASE WHEN "vote"."grade" > 0 THEN
56 CASE WHEN "vote"."grade" = max("agg"."grade") THEN TRUE ELSE FALSE END
57 ELSE NULL
58 END AS "first_preference"
59 FROM "vote"
60 JOIN "initiative" -- NOTE: due to missing index on issue_id
61 ON "vote"."issue_id" = "initiative"."issue_id"
62 JOIN "vote" AS "agg"
63 ON "initiative"."id" = "agg"."initiative_id"
64 AND "vote"."member_id" = "agg"."member_id"
65 GROUP BY "vote"."initiative_id", "vote"."member_id"
66 ) AS "subquery"
67 WHERE "vote"."initiative_id" = "subquery"."initiative_id"
68 AND "vote"."member_id" = "subquery"."member_id";
70 DELETE FROM "temporary_transaction_data"
71 WHERE "key" = 'override_protection_triggers';
73 UPDATE "initiative"
74 SET "first_preference_votes" = coalesce("subquery"."sum", 0)
75 FROM (
76 SELECT "vote"."initiative_id", sum("direct_voter"."weight")
77 FROM "vote" JOIN "direct_voter"
78 ON "vote"."issue_id" = "direct_voter"."issue_id"
79 AND "vote"."member_id" = "direct_voter"."member_id"
80 WHERE "vote"."first_preference"
81 GROUP BY "vote"."initiative_id"
82 ) AS "subquery"
83 WHERE "initiative"."admitted"
84 AND "initiative"."id" = "subquery"."initiative_id";
86 -- reconstruct battle data (originating from LiquidFeedback Core before v2.0.0)
87 -- to avoid future data loss when executing "clean_issue" to delete voting data:
88 INSERT INTO "battle" (
89 "issue_id",
90 "winning_initiative_id",
91 "losing_initiative_id",
92 "count"
93 ) SELECT
94 "battle_view"."issue_id",
95 "battle_view"."winning_initiative_id",
96 "battle_view"."losing_initiative_id",
97 "battle_view"."count"
98 FROM (
99 SELECT
100 "issue"."id" AS "issue_id",
101 "winning_initiative"."id" AS "winning_initiative_id",
102 "losing_initiative"."id" AS "losing_initiative_id",
103 sum(
104 CASE WHEN
105 coalesce("better_vote"."grade", 0) >
106 coalesce("worse_vote"."grade", 0)
107 THEN "direct_voter"."weight" ELSE 0 END
108 ) AS "count"
109 FROM "issue"
110 LEFT JOIN "direct_voter"
111 ON "issue"."id" = "direct_voter"."issue_id"
112 JOIN "battle_participant" AS "winning_initiative"
113 ON "issue"."id" = "winning_initiative"."issue_id"
114 JOIN "battle_participant" AS "losing_initiative"
115 ON "issue"."id" = "losing_initiative"."issue_id"
116 LEFT JOIN "vote" AS "better_vote"
117 ON "direct_voter"."member_id" = "better_vote"."member_id"
118 AND "winning_initiative"."id" = "better_vote"."initiative_id"
119 LEFT JOIN "vote" AS "worse_vote"
120 ON "direct_voter"."member_id" = "worse_vote"."member_id"
121 AND "losing_initiative"."id" = "worse_vote"."initiative_id"
122 WHERE "issue"."state" IN ('finished_with_winner', 'finished_without_winner')
123 AND "winning_initiative"."id" != "losing_initiative"."id"
124 -- NOTE: comparisons with status-quo are intentionally omitted to mark
125 -- issues that were counted prior LiquidFeedback Core v2.0.0
126 GROUP BY
127 "issue"."id",
128 "winning_initiative"."id",
129 "losing_initiative"."id"
130 ) AS "battle_view"
131 LEFT JOIN "battle"
132 ON "battle_view"."winning_initiative_id" = "battle"."winning_initiative_id"
133 AND "battle_view"."losing_initiative_id" = "battle"."losing_initiative_id"
134 WHERE "battle" ISNULL;
136 CREATE OR REPLACE FUNCTION "close_voting"("issue_id_p" "issue"."id"%TYPE)
137 RETURNS VOID
138 LANGUAGE 'plpgsql' VOLATILE AS $$
139 DECLARE
140 "area_id_v" "area"."id"%TYPE;
141 "unit_id_v" "unit"."id"%TYPE;
142 "member_id_v" "member"."id"%TYPE;
143 BEGIN
144 PERFORM "require_transaction_isolation"();
145 SELECT "area_id" INTO "area_id_v" FROM "issue" WHERE "id" = "issue_id_p";
146 SELECT "unit_id" INTO "unit_id_v" FROM "area" WHERE "id" = "area_id_v";
147 -- override protection triggers:
148 INSERT INTO "temporary_transaction_data" ("key", "value")
149 VALUES ('override_protection_triggers', TRUE::TEXT);
150 -- delete timestamp of voting comment:
151 UPDATE "direct_voter" SET "comment_changed" = NULL
152 WHERE "issue_id" = "issue_id_p";
153 -- delete delegating votes (in cases of manual reset of issue state):
154 DELETE FROM "delegating_voter"
155 WHERE "issue_id" = "issue_id_p";
156 -- delete votes from non-privileged voters:
157 DELETE FROM "direct_voter"
158 USING (
159 SELECT
160 "direct_voter"."member_id"
161 FROM "direct_voter"
162 JOIN "member" ON "direct_voter"."member_id" = "member"."id"
163 LEFT JOIN "privilege"
164 ON "privilege"."unit_id" = "unit_id_v"
165 AND "privilege"."member_id" = "direct_voter"."member_id"
166 WHERE "direct_voter"."issue_id" = "issue_id_p" AND (
167 "member"."active" = FALSE OR
168 "privilege"."voting_right" ISNULL OR
169 "privilege"."voting_right" = FALSE
170 )
171 ) AS "subquery"
172 WHERE "direct_voter"."issue_id" = "issue_id_p"
173 AND "direct_voter"."member_id" = "subquery"."member_id";
174 -- consider delegations:
175 UPDATE "direct_voter" SET "weight" = 1
176 WHERE "issue_id" = "issue_id_p";
177 PERFORM "add_vote_delegations"("issue_id_p");
178 -- mark first preferences:
179 UPDATE "vote" SET "first_preference" = "subquery"."first_preference"
180 FROM (
181 SELECT
182 "vote"."initiative_id",
183 "vote"."member_id",
184 CASE WHEN "vote"."grade" > 0 THEN
185 CASE WHEN "vote"."grade" = max("agg"."grade") THEN TRUE ELSE FALSE END
186 ELSE NULL
187 END AS "first_preference"
188 FROM "vote"
189 JOIN "initiative" -- NOTE: due to missing index on issue_id
190 ON "vote"."issue_id" = "initiative"."issue_id"
191 JOIN "vote" AS "agg"
192 ON "initiative"."id" = "agg"."initiative_id"
193 AND "vote"."member_id" = "agg"."member_id"
194 GROUP BY "vote"."initiative_id", "vote"."member_id"
195 ) AS "subquery"
196 WHERE "vote"."issue_id" = "issue_id_p"
197 AND "vote"."initiative_id" = "subquery"."initiative_id"
198 AND "vote"."member_id" = "subquery"."member_id";
199 -- finish overriding protection triggers (avoids garbage):
200 DELETE FROM "temporary_transaction_data"
201 WHERE "key" = 'override_protection_triggers';
202 -- materialize battle_view:
203 -- NOTE: "closed" column of issue must be set at this point
204 DELETE FROM "battle" WHERE "issue_id" = "issue_id_p";
205 INSERT INTO "battle" (
206 "issue_id",
207 "winning_initiative_id", "losing_initiative_id",
208 "count"
209 ) SELECT
210 "issue_id",
211 "winning_initiative_id", "losing_initiative_id",
212 "count"
213 FROM "battle_view" WHERE "issue_id" = "issue_id_p";
214 -- set voter count:
215 UPDATE "issue" SET
216 "voter_count" = (
217 SELECT coalesce(sum("weight"), 0)
218 FROM "direct_voter" WHERE "issue_id" = "issue_id_p"
219 )
220 WHERE "id" = "issue_id_p";
221 -- calculate "first_preference_votes":
222 UPDATE "initiative"
223 SET "first_preference_votes" = coalesce("subquery"."sum", 0)
224 FROM (
225 SELECT "vote"."initiative_id", sum("direct_voter"."weight")
226 FROM "vote" JOIN "direct_voter"
227 ON "vote"."issue_id" = "direct_voter"."issue_id"
228 AND "vote"."member_id" = "direct_voter"."member_id"
229 WHERE "vote"."first_preference"
230 GROUP BY "vote"."initiative_id"
231 ) AS "subquery"
232 WHERE "initiative"."issue_id" = "issue_id_p"
233 AND "initiative"."admitted"
234 AND "initiative"."id" = "subquery"."initiative_id";
235 -- copy "positive_votes" and "negative_votes" from "battle" table:
236 UPDATE "initiative" SET
237 "positive_votes" = "battle_win"."count",
238 "negative_votes" = "battle_lose"."count"
239 FROM "battle" AS "battle_win", "battle" AS "battle_lose"
240 WHERE
241 "battle_win"."issue_id" = "issue_id_p" AND
242 "battle_win"."winning_initiative_id" = "initiative"."id" AND
243 "battle_win"."losing_initiative_id" ISNULL AND
244 "battle_lose"."issue_id" = "issue_id_p" AND
245 "battle_lose"."losing_initiative_id" = "initiative"."id" AND
246 "battle_lose"."winning_initiative_id" ISNULL;
247 END;
248 $$;
250 COMMIT;

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