added date_type_t, time_type_t and timestamp, ensure allocated postgres resources are released, split repository into basic_repository and repository.

include/matador/object/repository_node_iterator.hpp

@@ -1,19 +1,19 @@
-#ifndef SCHEMA_NODE_ITERATOR_HPP
-#define SCHEMA_NODE_ITERATOR_HPP
-
-#include "matador/object/repository_node.hpp"
+#ifndef REPOSITORY_NODE_ITERATOR_HPP
+#define REPOSITORY_NODE_ITERATOR_HPP
 
 #include <iterator>
 
 namespace matador::object {
 
+class repository_node;
+
 class const_repository_node_iterator {
 public:
   using iterator_category = std::bidirectional_iterator_tag;
   using difference_type = std::ptrdiff_t;
-  using value_type = std::shared_ptr<repository_node>;
+  using value_type = repository_node;
   using pointer = repository_node*;
-  using reference = value_type;
+  using reference = value_type&;
 
   /**
    * Creates an empty iterator
@@ -28,7 +28,7 @@ public:
    *
    * @param node The schema node of the object
    */
-  explicit const_repository_node_iterator(const value_type& node);
+  explicit const_repository_node_iterator(value_type* node);
 
   /**
    * Copy from a given const_object_view_iterator.
@@ -123,8 +123,8 @@ private:
   void decrement();
 
 private:
-  value_type node_{};
+  pointer node_{nullptr};
 };
 
 }
-#endif //SCHEMA_NODE_ITERATOR_HPP
+#endif //REPOSITORY_NODE_ITERATOR_HPP