merge branch.sql

liberapay · Oct 30, 2019 · 0cb2952 · 0cb2952
1 parent 07bd1dc
commit 0cb2952
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Showing 4 changed files with 59 additions and 30 deletions.
diff --git a/sql/branch.sql b/sql/branch.sql
diff --git a/sql/currencies.sql b/sql/currencies.sql
@@ -70,6 +70,36 @@ CREATE OPERATOR * (
     commutator = *
 );
 
+CREATE FUNCTION currency_amount_mul(numeric, currency_amount)
+RETURNS currency_amount AS $$
+    BEGIN
+        RETURN ($2.amount * $1, $2.currency);
+    END;
+$$ LANGUAGE plpgsql IMMUTABLE STRICT;
+
+CREATE OPERATOR * (
+    leftarg = numeric,
+    rightarg = currency_amount,
+    procedure = currency_amount_mul,
+    commutator = *
+);
+
+CREATE FUNCTION currency_amount_div(currency_amount, currency_amount)
+RETURNS numeric AS $$
+    BEGIN
+        IF ($1.currency <> $2.currency) THEN
+            RAISE 'currency mistmatch: % != %', $1.currency, $2.currency;
+        END IF;
+        RETURN $1.amount / $2.amount;
+    END;
+$$ LANGUAGE plpgsql IMMUTABLE STRICT;
+
+CREATE OPERATOR / (
+    leftarg = currency_amount,
+    rightarg = currency_amount,
+    procedure = currency_amount_div
+);
+
 
 -- Aggregate functions
 

diff --git a/sql/migrations.sql b/sql/migrations.sql
@@ -2397,3 +2397,31 @@ UPDATE participants
 
 -- migration #110
 DELETE FROM notifications WHERE event = 'identity_required';
+
+-- migration #111
+CREATE FUNCTION currency_amount_mul(numeric, currency_amount)
+RETURNS currency_amount AS $$
+    BEGIN
+        RETURN ($2.amount * $1, $2.currency);
+    END;
+$$ LANGUAGE plpgsql IMMUTABLE STRICT;
+CREATE OPERATOR * (
+    leftarg = numeric,
+    rightarg = currency_amount,
+    procedure = currency_amount_mul,
+    commutator = *
+);
+CREATE FUNCTION currency_amount_div(currency_amount, currency_amount)
+RETURNS numeric AS $$
+    BEGIN
+        IF ($1.currency <> $2.currency) THEN
+            RAISE 'currency mistmatch: % != %', $1.currency, $2.currency;
+        END IF;
+        RETURN $1.amount / $2.amount;
+    END;
+$$ LANGUAGE plpgsql IMMUTABLE STRICT;
+CREATE OPERATOR / (
+    leftarg = currency_amount,
+    rightarg = currency_amount,
+    procedure = currency_amount_div
+);
diff --git a/sql/schema.sql b/sql/schema.sql
@@ -14,7 +14,7 @@ COMMENT ON EXTENSION pg_stat_statements IS 'track execution statistics of all SQ
 
 -- database metadata
 CREATE TABLE db_meta (key text PRIMARY KEY, value jsonb);
-INSERT INTO db_meta (key, value) VALUES ('schema_version', '110'::jsonb);
+INSERT INTO db_meta (key, value) VALUES ('schema_version', '111'::jsonb);
 
 
 -- app configuration