added db.QueryStructSlice

ungerik · ungerik · commit 055a7bde00ed · 2022-06-15T14:40:26.000+02:00
diff --git a/db/query.go b/db/query.go
@@ -118,3 +118,12 @@ func pkColumnsOfStruct(conn sqldb.Connection, t reflect.Type) (table string, col
 	}
 	return table, columns, nil
 }
+
+// QueryStructSlice returns queried rows as slice of pointers to the generic struct type S
+func QueryStructSlice[S any](ctx context.Context, query string, args ...any) (rows []*S, err error) {
+	err = Conn(ctx).QueryRows(query, args...).ScanStructSlice(&rows)
+	if err != nil {
+		return nil, err
+	}
+	return rows, nil
+}

Original file line number	Diff line number	Diff line change
`@@ -118,3 +118,12 @@ func pkColumnsOfStruct(conn sqldb.Connection, t reflect.Type) (table string, col`
`118`	`118`	`}`
`119`	`119`	`return table, columns, nil`
`120`	`120`	`}`
	`121`	`+`
	`122`	`+// QueryStructSlice returns queried rows as slice of pointers to the generic struct type S`
	`123`	`+func QueryStructSlice[S any](ctx context.Context, query string, args ...any) (rows []*S, err error) {`
	`124`	`+ err = Conn(ctx).QueryRows(query, args...).ScanStructSlice(&rows)`
	`125`	`+ if err != nil {`
	`126`	`+ return nil, err`
	`127`	`+ }`
	`128`	`+ return rows, nil`
	`129`	`+}`