Add statement-cache and enable relevant functionality in connection

1 files changed, 67 insertions, 0 deletions

diff --git a/odb/pgsql/statement-cache.hxx b/odb/pgsql/statement-cache.hxx
new file mode 100644
index 0000000..8164cd8
--- /dev/null
+++ b/odb/pgsql/statement-cache.hxx
@@ -0,0 +1,67 @@
+// file      : odb/pgsql/statement-cache.hxx
+// author    : Constantin Michael <constantin@codesynthesis.com>
+// copyright : Copyright (c) 2005-2011 Code Synthesis Tools CC
+// license   : GNU GPL v2; see accompanying LICENSE file
+
+#ifndef ODB_PGSQL_STATEMENT_CACHE_HXX
+#define ODB_PGSQL_STATEMENT_CACHE_HXX
+
+#include <odb/pre.hxx>
+
+#include <map>
+#include <typeinfo>
+
+#include <odb/forward.hxx>
+
+#include <odb/pgsql/version.hxx>
+#include <odb/pgsql/object-statements.hxx>
+
+#include <odb/details/shared-ptr.hxx>
+#include <odb/details/type-info.hxx>
+
+#include <odb/pgsql/details/export.hxx>
+
+namespace odb
+{
+  namespace pgsql
+  {
+    class connection;
+
+    class LIBODB_PGSQL_EXPORT statement_cache
+    {
+    public:
+      statement_cache (connection& conn)
+          : conn_ (conn)
+      {
+      }
+
+      template <typename T>
+      object_statements<T>&
+      find ()
+      {
+        map::iterator i (map_.find (&typeid (T)));
+
+        if (i != map_.end ())
+          return static_cast<object_statements<T>&> (*i->second);
+
+        details::shared_ptr<object_statements<T> > p (
+          new (details::shared) object_statements<T> (conn_));
+
+        map_.insert (map::value_type (&typeid (T), p));
+        return *p;
+      }
+
+    private:
+      typedef std::map<const std::type_info*,
+                       details::shared_ptr<object_statements_base>,
+                       details::type_info_comparator> map;
+
+      connection& conn_;
+      map map_;
+    };
+  }
+}
+
+#include <odb/post.hxx>
+
+#endif // ODB_PGSQL_STATEMENT_CACHE_HXX