jbe@383: BEGIN;
jbe@383: 
jbe@383: CREATE OR REPLACE VIEW "liquid_feedback_version" AS
jbe@383:   SELECT * FROM (VALUES ('2.2.2', 2, 2, 2))
jbe@383:   AS "subquery"("string", "major", "minor", "revision");
jbe@383: 
jbe@383: CREATE TABLE "internal_session_store" (
jbe@383:         PRIMARY KEY ("backend_pid", "key"),
jbe@383:         "backend_pid"           INT4,
jbe@383:         "key"                   TEXT,
jbe@383:         "value"                 TEXT            NOT NULL );
jbe@383: 
jbe@383: COMMENT ON TABLE "internal_session_store" IS 'Table to store session variables; shall be emptied before a transaction is committed';
jbe@383: 
jbe@383: COMMENT ON COLUMN "internal_session_store"."backend_pid" IS 'Value returned by function pg_backend_pid()';
jbe@383: 
jbe@383: CREATE OR REPLACE FUNCTION "forbid_changes_on_closed_issue_trigger"()
jbe@383:   RETURNS TRIGGER
jbe@383:   LANGUAGE 'plpgsql' VOLATILE AS $$
jbe@383:     DECLARE
jbe@383:       "issue_id_v" "issue"."id"%TYPE;
jbe@383:       "issue_row"  "issue"%ROWTYPE;
jbe@383:     BEGIN
jbe@383:       IF EXISTS (
jbe@383:         SELECT NULL FROM "internal_session_store"
jbe@383:         WHERE "backend_pid" = pg_backend_pid()
jbe@383:         AND "key" = 'override_protection_triggers'
jbe@383:         AND "value" = TRUE::TEXT
jbe@383:       ) THEN
jbe@383:         RETURN NULL;
jbe@383:       END IF;
jbe@383:       IF TG_OP = 'DELETE' THEN
jbe@383:         "issue_id_v" := OLD."issue_id";
jbe@383:       ELSE
jbe@383:         "issue_id_v" := NEW."issue_id";
jbe@383:       END IF;
jbe@383:       SELECT INTO "issue_row" * FROM "issue"
jbe@383:         WHERE "id" = "issue_id_v" FOR SHARE;
jbe@383:       IF (
jbe@383:         "issue_row"."closed" NOTNULL OR (
jbe@383:           "issue_row"."state" = 'voting' AND
jbe@383:           "issue_row"."phase_finished" NOTNULL
jbe@383:         )
jbe@383:       ) THEN
jbe@383:         IF
jbe@383:           TG_RELID = 'direct_voter'::regclass AND
jbe@383:           TG_OP = 'UPDATE'
jbe@383:         THEN
jbe@383:           IF
jbe@383:             OLD."issue_id"  = NEW."issue_id"  AND
jbe@383:             OLD."member_id" = NEW."member_id" AND
jbe@383:             OLD."weight" = NEW."weight"
jbe@383:           THEN
jbe@383:             RETURN NULL;  -- allows changing of voter comment
jbe@383:           END IF;
jbe@383:         END IF;
jbe@383:         RAISE EXCEPTION 'Tried to modify data after voting has been closed.';
jbe@383:       END IF;
jbe@383:       RETURN NULL;
jbe@383:     END;
jbe@383:   $$;
jbe@383: 
jbe@383: CREATE OR REPLACE FUNCTION "close_voting"("issue_id_p" "issue"."id"%TYPE)
jbe@383:   RETURNS VOID
jbe@383:   LANGUAGE 'plpgsql' VOLATILE AS $$
jbe@383:     DECLARE
jbe@383:       "area_id_v"   "area"."id"%TYPE;
jbe@383:       "unit_id_v"   "unit"."id"%TYPE;
jbe@383:       "member_id_v" "member"."id"%TYPE;
jbe@383:     BEGIN
jbe@383:       PERFORM "require_transaction_isolation"();
jbe@383:       SELECT "area_id" INTO "area_id_v" FROM "issue" WHERE "id" = "issue_id_p";
jbe@383:       SELECT "unit_id" INTO "unit_id_v" FROM "area"  WHERE "id" = "area_id_v";
jbe@383:       -- override protection triggers:
jbe@383:       DELETE FROM "internal_session_store";
jbe@383:       INSERT INTO "internal_session_store" ("backend_pid", "key", "value")
jbe@383:         VALUES (pg_backend_pid(), 'override_protection_triggers', TRUE::TEXT);
jbe@383:       -- delete timestamp of voting comment:
jbe@383:       UPDATE "direct_voter" SET "comment_changed" = NULL
jbe@383:         WHERE "issue_id" = "issue_id_p";
jbe@383:       -- delete delegating votes (in cases of manual reset of issue state):
jbe@383:       DELETE FROM "delegating_voter"
jbe@383:         WHERE "issue_id" = "issue_id_p";
jbe@383:       -- delete votes from non-privileged voters:
jbe@383:       DELETE FROM "direct_voter"
jbe@383:         USING (
jbe@383:           SELECT
jbe@383:             "direct_voter"."member_id"
jbe@383:           FROM "direct_voter"
jbe@383:           JOIN "member" ON "direct_voter"."member_id" = "member"."id"
jbe@383:           LEFT JOIN "privilege"
jbe@383:           ON "privilege"."unit_id" = "unit_id_v"
jbe@383:           AND "privilege"."member_id" = "direct_voter"."member_id"
jbe@383:           WHERE "direct_voter"."issue_id" = "issue_id_p" AND (
jbe@383:             "member"."active" = FALSE OR
jbe@383:             "privilege"."voting_right" ISNULL OR
jbe@383:             "privilege"."voting_right" = FALSE
jbe@383:           )
jbe@383:         ) AS "subquery"
jbe@383:         WHERE "direct_voter"."issue_id" = "issue_id_p"
jbe@383:         AND "direct_voter"."member_id" = "subquery"."member_id";
jbe@383:       -- consider delegations:
jbe@383:       UPDATE "direct_voter" SET "weight" = 1
jbe@383:         WHERE "issue_id" = "issue_id_p";
jbe@383:       PERFORM "add_vote_delegations"("issue_id_p");
jbe@383:       -- finish overriding protection triggers (mandatory, as pids may be reused):
jbe@383:       DELETE FROM "internal_session_store";
jbe@383:       -- materialize battle_view:
jbe@383:       -- NOTE: "closed" column of issue must be set at this point
jbe@383:       DELETE FROM "battle" WHERE "issue_id" = "issue_id_p";
jbe@383:       INSERT INTO "battle" (
jbe@383:         "issue_id",
jbe@383:         "winning_initiative_id", "losing_initiative_id",
jbe@383:         "count"
jbe@383:       ) SELECT
jbe@383:         "issue_id",
jbe@383:         "winning_initiative_id", "losing_initiative_id",
jbe@383:         "count"
jbe@383:         FROM "battle_view" WHERE "issue_id" = "issue_id_p";
jbe@383:       -- set voter count:
jbe@383:       UPDATE "issue" SET
jbe@383:         "voter_count" = (
jbe@383:           SELECT coalesce(sum("weight"), 0)
jbe@383:           FROM "direct_voter" WHERE "issue_id" = "issue_id_p"
jbe@383:         )
jbe@383:         WHERE "id" = "issue_id_p";
jbe@383:       -- copy "positive_votes" and "negative_votes" from "battle" table:
jbe@383:       UPDATE "initiative" SET
jbe@383:         "positive_votes" = "battle_win"."count",
jbe@383:         "negative_votes" = "battle_lose"."count"
jbe@383:         FROM "battle" AS "battle_win", "battle" AS "battle_lose"
jbe@383:         WHERE
jbe@383:           "battle_win"."issue_id" = "issue_id_p" AND
jbe@383:           "battle_win"."winning_initiative_id" = "initiative"."id" AND
jbe@383:           "battle_win"."losing_initiative_id" ISNULL AND
jbe@383:           "battle_lose"."issue_id" = "issue_id_p" AND
jbe@383:           "battle_lose"."losing_initiative_id" = "initiative"."id" AND
jbe@383:           "battle_lose"."winning_initiative_id" ISNULL;
jbe@383:     END;
jbe@383:   $$;
jbe@383: 
jbe@383: COMMIT;