From 5b6649e6f7dd256147b48197a007c23001cef647 Mon Sep 17 00:00:00 2001
From: Boris Kolpackov <boris@codesynthesis.com>
Date: Sun, 21 Aug 2011 16:27:34 +0200
Subject: Add odb::connection class

This abstract class represents a connection to the database. One can
use it to start a transaction or to execute a native statement out
of a transaction.

Before we had concrete connection classes in the database runtime
libraries (e.g., odb::mysql::connection). Now these classes derive
from odb::connection.
---
 odb/connection.hxx | 74 ++++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 74 insertions(+)
 create mode 100644 odb/connection.hxx

(limited to 'odb/connection.hxx')

diff --git a/odb/connection.hxx b/odb/connection.hxx
new file mode 100644
index 0000000..db8635c
--- /dev/null
+++ b/odb/connection.hxx
@@ -0,0 +1,74 @@
+// file      : odb/connection.hxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_CONNECTION_HXX
+#define ODB_CONNECTION_HXX
+
+#include <odb/pre.hxx>
+
+#include <string>
+#include <cstddef> // std::size_t
+
+#include <odb/forward.hxx>
+
+#include <odb/details/export.hxx>
+#include <odb/details/shared-ptr.hxx>
+
+namespace odb
+{
+  class transaction_impl;
+
+  class connection;
+  typedef details::shared_ptr<connection> connection_ptr;
+
+  class LIBODB_EXPORT connection: public details::shared_base
+  {
+  public:
+    typedef odb::database database_type;
+
+    database_type&
+    database ();
+
+    // Transactions.
+    //
+  public:
+    virtual transaction_impl*
+    begin () = 0;
+
+    // Native database statement execution. Note that unlike the
+    // versions in the database class, these can be executed
+    // without a transaction.
+    //
+  public:
+    unsigned long long
+    execute (const char* statement);
+
+    unsigned long long
+    execute (const std::string& statement);
+
+    virtual unsigned long long
+    execute (const char* statement, std::size_t length) = 0;
+
+  public:
+    virtual
+    ~connection ();
+
+  protected:
+    connection (database_type&);
+
+  private:
+    connection (const connection&);
+    connection& operator= (const connection&);
+
+  private:
+    database_type& database_;
+  };
+}
+
+#include <odb/connection.ixx>
+
+#include <odb/post.hxx>
+
+#endif // ODB_MYSQL_CONNECTION_HXX
-- 
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