From 9580dd19c23e5591cc022dce717eca7bc745c5b0 Mon Sep 17 00:00:00 2001
From: Christian Grothoff <christian@grothoff.org>
Date: Sun, 27 Nov 2022 00:16:00 +0100
Subject: intermediate step in major SQL refactoring (not done at all)

---
 src/exchangedb/0003-purse_deletion.sql | 94 ++++++++++++++++++++++++++++++++++
 1 file changed, 94 insertions(+)
 create mode 100644 src/exchangedb/0003-purse_deletion.sql

(limited to 'src/exchangedb/0003-purse_deletion.sql')

diff --git a/src/exchangedb/0003-purse_deletion.sql b/src/exchangedb/0003-purse_deletion.sql
new file mode 100644
index 000000000..e655ee613
--- /dev/null
+++ b/src/exchangedb/0003-purse_deletion.sql
@@ -0,0 +1,94 @@
+--
+-- This file is part of TALER
+-- Copyright (C) 2014--2022 Taler Systems SA
+--
+-- TALER is free software; you can redistribute it and/or modify it under the
+-- terms of the GNU General Public License as published by the Free Software
+-- Foundation; either version 3, or (at your option) any later version.
+--
+-- TALER is distributed in the hope that it will be useful, but WITHOUT ANY
+-- WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
+-- A PARTICULAR PURPOSE.  See the GNU General Public License for more details.
+--
+-- You should have received a copy of the GNU General Public License along with
+-- TALER; see the file COPYING.  If not, see <http://www.gnu.org/licenses/>
+--
+
+CREATE OR REPLACE FUNCTION create_table_purse_deletion(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(purse_deletion_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
+      ',purse_sig BYTEA CHECK (LENGTH(purse_sig)=64)'
+      ',XXX VARCHAR NOT NULL'
+    ') %s ;'
+    ,'purse_deletion'
+    ,'PARTITION BY HASH (XXX)'
+    ,shard_suffix
+  );
+  COMMENT ON TABLE purse_deletion
+    IS 'signatures affirming explicit purse deletions';
+  COMMENT ON COLUMN purse_deletion.purse_sig
+    IS 'signature of type XXX';
+END
+$$;
+COMMENT ON FUNCTION create_table_purse_deletion
+  IS 'Creates the purse_deletion table';
+
+CREATE OR REPLACE FUNCTION constrain_table_purse_deletion(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE purse_deletion_' || partition_suffix || ' '
+      'ADD CONSTRAINT purse_deletion_' || partition_suffix || '_XXX '
+        'UNIQUE (XXX)'
+  );
+END
+$$;
+
+CREATE OR REPLACE FUNCTION alter_create_was_deleted_table_purse_requests (
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE purse_requests_' || partition_suffix ||
+    ' ADD COLUMN'
+    ' was_deleted BOOLEAN NOT NULL DEFAULT(FALSE)'
+  );
+END
+$$;
+
+INSERT INTO exchange_tables
+    (name
+    ,version
+    ,action
+    ,partitioned
+    ,by_range)
+  VALUES
+    ('purse_deletion'
+    ,'exchange-0002'
+    ,'create'
+    ,TRUE
+    ,FALSE),
+    ('purse_deletion'
+    ,'exchange-0002'
+    ,'constrain'
+    ,TRUE
+    ,FALSE),
+    ('purse_requests'
+    ,'exchange-0002'
+    ,'alter_create_was_deleted'
+    ,TRUE
+    ,FALSE);
-- 
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