structured-liquibase-files (#29)

Co-authored-by: Michael Hoennig <michael@hoennig.de>
Reviewed-on: https://dev.hostsharing.net/hostsharing/hs.hsadmin.ng/pulls/29
Reviewed-by: Timotheus Pokorra <timotheus.pokorra@hostsharing.net>

src/main/resources/db/changelog/5-hs-office/511-coopshares/5116-hs-office-coopshares-migration.sql

@@ -0,0 +1,96 @@
+--liquibase formatted sql
+
+-- TODO: These changesets are just for the external remote views to simulate the legacy tables.
+--  Once we don't need the external remote views anymore, create revert changesets.
+
+-- ============================================================================
+--changeset hs-office-coopshares-MIGRATION-mapping:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+CREATE TABLE hs_office_coopsharestransaction_legacy_id
+(
+    uuid            uuid NOT NULL REFERENCES hs_office_coopsharestransaction(uuid),
+    member_share_id  integer NOT NULL
+);
+--//
+
+
+-- ============================================================================
+--changeset hs-office-coopshares-MIGRATION-sequence:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+CREATE SEQUENCE IF NOT EXISTS hs_office_coopsharestransaction_legacy_id_seq
+    AS integer
+    START 1000000000
+    OWNED BY hs_office_coopsharestransaction_legacy_id.member_share_id;
+--//
+
+
+-- ============================================================================
+--changeset hs-office-coopshares-MIGRATION-default:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+ALTER TABLE hs_office_coopsharestransaction_legacy_id
+    ALTER COLUMN member_share_id
+        SET DEFAULT nextVal('hs_office_coopsharestransaction_legacy_id_seq');
+
+--/
+
+-- ============================================================================
+--changeset hs-office-coopshares-MIGRATION-insert:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+
+CALL defineContext('schema-migration');
+INSERT INTO hs_office_coopsharestransaction_legacy_id(uuid, member_share_id)
+    SELECT uuid, nextVal('hs_office_coopsharestransaction_legacy_id_seq') FROM hs_office_coopsharestransaction;
+--/
+
+
+-- ============================================================================
+--changeset hs-office-coopShares-MIGRATION-insert-trigger:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+create or replace function insertCoopSharesLegacyIdMapping()
+    returns trigger
+    language plpgsql
+    strict as $$
+begin
+    if TG_OP <> 'INSERT' then
+        raise exception 'invalid usage of trigger';
+    end if;
+
+    INSERT INTO hs_office_coopsharestransaction_legacy_id VALUES
+        (NEW.uuid, nextVal('hs_office_coopsharestransaction_legacy_id_seq'));
+
+    return NEW;
+end; $$;
+
+create trigger createCoopSharesLegacyIdMapping
+    after insert on hs_office_coopsharestransaction
+        for each row
+            execute procedure insertCoopSharesLegacyIdMapping();
+--/
+
+
+-- ============================================================================
+--changeset hs-office-coopShares-MIGRATION-delete-trigger:1 endDelimiter:--//
+-- ----------------------------------------------------------------------------
+create or replace function deleteCoopSharesLegacyIdMapping()
+    returns trigger
+    language plpgsql
+    strict as $$
+begin
+    if TG_OP <> 'DELETE' then
+        raise exception 'invalid usage of trigger';
+    end if;
+
+    DELETE FROM hs_office_coopsharestransaction_legacy_id
+           WHERE uuid = OLD.uuid;
+
+    return OLD;
+end; $$;
+
+create trigger removeCoopSharesLegacyIdMapping
+    before delete on hs_office_coopsharestransaction
+        for each row
+            execute procedure deleteCoopSharesLegacyIdMapping();
+--/