Add support for creating connection from existing handle

This will allow for custom connection establishment and configuration.

2 files changed, 26 insertions, 2 deletions

diff --git a/odb/sqlite/connection.cxx b/odb/sqlite/connection.cxx
index 1e9ff6f..68b57f9 100644
--- a/odb/sqlite/connection.cxx
+++ b/odb/sqlite/connection.cxx
@@ -66,16 +66,35 @@ namespace odb
         translate_error (e, *this);
       }
 
+      init ();
+    }
+
+    connection::
+    connection (database_type& db, sqlite3* handle)
+        : odb::connection (db),
+          db_ (db),
+          handle_ (handle),
+          unlock_cond_ (unlock_mutex_),
+          statements_ (0)
+    {
+      init ();
+    }
+
+    void connection::
+    init ()
+    {
       // Enable/disable foreign key constraints.
       //
       simple_statement st (
         *this,
-        db.foreign_keys ()
+        db_.foreign_keys ()
         ? "PRAGMA foreign_keys=ON"
         : "PRAGMA foreign_keys=OFF",
-        db.foreign_keys () ? 22 : 23);
+        db_.foreign_keys () ? 22 : 23);
       st.execute ();
 
+      // Create statement cache.
+      //
       statement_cache_.reset (new statement_cache_type (*this));
     }
 
diff --git a/odb/sqlite/connection.hxx b/odb/sqlite/connection.hxx
index e069ce9..e487e6b 100644
--- a/odb/sqlite/connection.hxx
+++ b/odb/sqlite/connection.hxx
@@ -43,6 +43,7 @@ namespace odb
       ~connection ();
 
       connection (database_type&, int extra_flags = 0);
+      connection (database_type&, sqlite3* handle);
 
       database_type&
       database ()
@@ -96,6 +97,10 @@ namespace odb
       connection& operator= (const connection&);
 
     private:
+      void
+      init ();
+
+    private:
       database_type& db_;
       sqlite3* handle_;