Add support for SQL statement tracing

1 files changed, 58 insertions, 0 deletions

diff --git a/odb/tracer.cxx b/odb/tracer.cxx
new file mode 100644
index 0000000..aa33822
--- /dev/null
+++ b/odb/tracer.cxx
@@ -0,0 +1,58 @@
+// file      : odb/tracer.cxx
+// author    : Boris Kolpackov <boris@codesynthesis.com>
+// copyright : Copyright (c) 2009-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#include <iostream>
+
+#include <odb/tracer.hxx>
+#include <odb/statement.hxx>
+
+using namespace std;
+
+namespace odb
+{
+  //
+  // tracer
+  //
+
+  tracer::
+  ~tracer ()
+  {
+  }
+
+  void tracer::
+  prepare (connection&, const statement&)
+  {
+  }
+
+  void tracer::
+  execute (connection& c, const statement& s)
+  {
+    execute (c, s.text ());
+  }
+
+  void tracer::
+  deallocate (connection&, const statement&)
+  {
+  }
+
+  //
+  // stderr_tracer
+  //
+
+  class stderr_tracer_type: public tracer
+  {
+    virtual void
+    execute (connection&, const char* statement);
+  };
+
+  void stderr_tracer_type::
+  execute (connection&, const char* s)
+  {
+    cerr << s << endl;
+  }
+
+  static stderr_tracer_type stderr_tracer_;
+  tracer& stderr_tracer = stderr_tracer_;
+}