From 79cb2f05559e1ed9e724efd4f5dbceca794e7162 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Thu, 29 Apr 2021 12:37:09 +0200
Subject: Add serial_connection_factory

This factory can be used when the database access is guaranteed to be serial.
---
 odb/sqlite/connection-factory.cxx | 34 ++++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

(limited to 'odb/sqlite/connection-factory.cxx')

diff --git a/odb/sqlite/connection-factory.cxx b/odb/sqlite/connection-factory.cxx
index 1269db3..1a1f85a 100644
--- a/odb/sqlite/connection-factory.cxx
+++ b/odb/sqlite/connection-factory.cxx
@@ -17,6 +17,40 @@ namespace odb
   namespace sqlite
   {
     //
+    // serial_connection_factory
+    //
+
+    serial_connection_factory::
+    ~serial_connection_factory ()
+    {
+      // We should hold the last reference to the connection.
+      //
+      if (connection_ != 0)
+        assert (connection_.count () == 1);
+    }
+
+    connection_ptr serial_connection_factory::
+    create ()
+    {
+      return connection_ptr (new (shared) connection (*this));
+    }
+
+    connection_ptr serial_connection_factory::
+    connect ()
+    {
+      return connection_;
+    }
+
+    void serial_connection_factory::
+    database (database_type& db)
+    {
+      connection_factory::database (db);
+
+      if (!connection_)
+        connection_ = create ();
+    }
+
+    //
     // single_connection_factory
     //
 
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