1 files changed, 107 insertions, 0 deletions
diff --git a/libodb-pgsql/odb/pgsql/transaction-impl.cxx b/libodb-pgsql/odb/pgsql/transaction-impl.cxx
new file mode 100644
index 0000000..012fe18
--- /dev/null
+++ b/libodb-pgsql/odb/pgsql/transaction-impl.cxx
@@ -0,0 +1,107 @@
+// file      : odb/pgsql/transaction-impl.cxx
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <cassert>
+
+#include <libpq-fe.h>
+
+#include <odb/tracer.hxx>
+
+#include <odb/pgsql/database.hxx>
+#include <odb/pgsql/connection.hxx>
+#include <odb/pgsql/error.hxx>
+#include <odb/pgsql/exceptions.hxx>
+#include <odb/pgsql/transaction-impl.hxx>
+#include <odb/pgsql/auto-handle.hxx>
+
+namespace odb
+{
+  namespace pgsql
+  {
+    transaction_impl::
+    transaction_impl (database_type& db)
+        : odb::transaction_impl (db)
+    {
+    }
+
+    transaction_impl::
+    transaction_impl (connection_ptr c)
+        : odb::transaction_impl (c->database (), *c), connection_ (c)
+    {
+    }
+
+    transaction_impl::
+    ~transaction_impl ()
+    {
+    }
+
+    void transaction_impl::
+    start ()
+    {
+      // Grab a connection if we don't already have one.
+      //
+      if (connection_ == 0)
+      {
+        connection_ = static_cast<database_type&> (database_).connection ();
+        odb::transaction_impl::connection_ = connection_.get ();
+      }
+
+      {
+        odb::tracer* t;
+        if ((t = connection_->tracer ()) || (t = database_.tracer ()))
+          t->execute (*connection_, "BEGIN");
+      }
+
+      auto_handle<PGresult> h (PQexec (connection_->handle (), "begin"));
+
+      if (!h || PGRES_COMMAND_OK != PQresultStatus (h))
+        translate_error (*connection_, h);
+    }
+
+    void transaction_impl::
+    commit ()
+    {
+      // Invalidate query results.
+      //
+      connection_->invalidate_results ();
+
+      {
+        odb::tracer* t;
+        if ((t = connection_->tracer ()) || (t = database_.tracer ()))
+          t->execute (*connection_, "COMMIT");
+      }
+
+      auto_handle<PGresult> h (PQexec (connection_->handle (), "commit"));
+
+      if (!h || PGRES_COMMAND_OK != PQresultStatus (h))
+        translate_error (*connection_, h);
+
+      // Release the connection.
+      //
+      connection_.reset ();
+    }
+
+    void transaction_impl::
+    rollback ()
+    {
+      // Invalidate query results.
+      //
+      connection_->invalidate_results ();
+
+      {
+        odb::tracer* t;
+        if ((t = connection_->tracer ()) || (t = database_.tracer ()))
+          t->execute (*connection_, "ROLLBACK");
+      }
+
+      auto_handle<PGresult> h (PQexec (connection_->handle (), "rollback"));
+
+      if (!h || PGRES_COMMAND_OK != PQresultStatus (h))
+        translate_error (*connection_, h);
+
+      // Release the connection.
+      //
+      connection_.reset ();
+    }
+  }
+}