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/0002-reserves_in.sql | 83 +++++++++++++++++++++++++++++++++++++
 1 file changed, 83 insertions(+)
 create mode 100644 src/exchangedb/0002-reserves_in.sql

(limited to 'src/exchangedb/0002-reserves_in.sql')

diff --git a/src/exchangedb/0002-reserves_in.sql b/src/exchangedb/0002-reserves_in.sql
new file mode 100644
index 000000000..0b3c37e54
--- /dev/null
+++ b/src/exchangedb/0002-reserves_in.sql
@@ -0,0 +1,83 @@
+--
+-- 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_reserves_in(
+  IN shard_suffix VARCHAR DEFAULT NULL
+)
+RETURNS VOID
+LANGUAGE plpgsql
+AS $$
+DECLARE
+  table_name VARCHAR default 'reserves_in';
+BEGIN
+
+  PERFORM create_partitioned_table(
+    'CREATE TABLE IF NOT EXISTS %I'
+      '(reserve_in_serial_id BIGINT GENERATED BY DEFAULT AS IDENTITY' -- UNIQUE'
+      ',reserve_pub BYTEA PRIMARY KEY' -- REFERENCES reserves (reserve_pub) ON DELETE CASCADE'
+      ',wire_reference INT8 NOT NULL'
+      ',credit_val INT8 NOT NULL'
+      ',credit_frac INT4 NOT NULL'
+      ',wire_source_h_payto BYTEA CHECK (LENGTH(wire_source_h_payto)=32)'
+      ',exchange_account_section TEXT NOT NULL'
+      ',execution_date INT8 NOT NULL'
+    ') %s ;'
+    ,table_name
+    ,'PARTITION BY HASH (reserve_pub)'
+    ,shard_suffix
+  );
+
+  table_name = concat_ws('_', table_name, shard_suffix);
+
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_reserve_in_serial_id_index '
+    'ON ' || table_name || ' '
+    '(reserve_in_serial_id);'
+  );
+  -- FIXME: where do we need this index? Can we do better?
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_exch_accnt_section_execution_date_idx '
+    'ON ' || table_name || ' '
+    '(exchange_account_section '
+    ',execution_date'
+    ');'
+  );
+  -- FIXME: where do we need this index? Can we do better?
+  EXECUTE FORMAT (
+    'CREATE INDEX IF NOT EXISTS ' || table_name || '_by_exch_accnt_reserve_in_serial_id_idx '
+    'ON ' || table_name || ' '
+    '(exchange_account_section,'
+    'reserve_in_serial_id DESC'
+    ');'
+  );
+
+END
+$$;
+
+CREATE OR REPLACE FUNCTION add_constraints_to_reserves_in_partition(
+  IN partition_suffix VARCHAR
+)
+RETURNS void
+LANGUAGE plpgsql
+AS $$
+BEGIN
+  EXECUTE FORMAT (
+    'ALTER TABLE reserves_in_' || partition_suffix || ' '
+      'ADD CONSTRAINT reserves_in_' || partition_suffix || '_reserve_in_serial_id_key '
+        'UNIQUE (reserve_in_serial_id)'
+  );
+END
+$$;
-- 
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