1 files changed, 95 insertions, 0 deletions
diff --git a/libodb/odb/tracer.cxx b/libodb/odb/tracer.cxx
new file mode 100644
index 0000000..1e636a7
--- /dev/null
+++ b/libodb/odb/tracer.cxx
@@ -0,0 +1,95 @@
+// file      : odb/tracer.cxx
+// 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
+  {
+  public:
+    stderr_tracer_type (bool full): full_ (full) {}
+
+    virtual void
+    prepare (connection&, const statement&);
+
+    virtual void
+    execute (connection&, const char* statement);
+
+    virtual void
+    deallocate (connection&, const statement&);
+
+    // Override the other version to get rid of a Sun CC warning.
+    //
+    virtual void
+    execute (connection&, const statement&);
+
+  private:
+    bool full_;
+  };
+
+  void stderr_tracer_type::
+  prepare (connection&, const statement& s)
+  {
+    if (full_)
+      cerr << "PREPARE " << s.text () << endl;
+  }
+
+  void stderr_tracer_type::
+  execute (connection&, const char* s)
+  {
+    cerr << s << endl;
+  }
+
+  void stderr_tracer_type::
+  deallocate (connection&, const statement& s)
+  {
+    if (full_)
+      cerr << "DEALLOCATE " << s.text () << endl;
+  }
+
+  void stderr_tracer_type::
+  execute (connection& c, const statement& s)
+  {
+    execute (c, s.text ());
+  }
+
+  static stderr_tracer_type stderr_tracer_ (false);
+  static stderr_tracer_type stderr_full_tracer_ (true);
+  tracer& stderr_tracer = stderr_tracer_;
+  tracer& stderr_full_tracer = stderr_full_tracer_;
+}