implemented sqlite fetch

include/matador/utils/constraints.hpp

@@ -26,6 +26,9 @@ inline constraints operator&(constraints a, constraints b)
   return static_cast<constraints>(static_cast<unsigned int>(a) & static_cast<unsigned int>(b));
 }
 
+inline constraints& operator|= (constraints& a, constraints b) { return (constraints&)((int&)a |= (int)b); }
+inline constraints& operator&= (constraints& a, constraints b) { return (constraints&)((int&)a &= (int)b); }
+
 inline bool is_constraint_set(constraints source, constraints needle)
 {
   return static_cast<int>(source & needle) > 0;

include/matador/utils/identifiable.hpp

@@ -1,50 +0,0 @@
-#ifndef QUERY_IDENTIFIABLE_HPP
-#define QUERY_IDENTIFIABLE_HPP
-
-#include "matador/utils/identifier.hpp"
-
-namespace matador::utils {
-
-/**
- * Base class for all pointer object
- * which can contain an identifiable
- */
-class identifiable
-{
-public:
-  virtual ~identifiable() = default;
-
-  /**
-   * Resets the object_holder with the given
-   * identifier. If the type of identifier differs
-   * from internal type an exception is thrown
-   *
-   * @param id The identifier to set
-   */
-  virtual void reset(const identifier &id) = 0;
-
-  /**
-   * Returns true if serializable has a primary key
-   *
-   * @return true if serializable has a primary key
-   */
-  [[nodiscard]] virtual bool has_primary_key() const = 0;
-
-  /**
-   * Gets the primary key of the foreign serializable
-   *
-   * @return The primary key of the foreign serializable
-   */
-  [[nodiscard]] virtual const identifier& primary_key() const = 0;
-  virtual identifier& primary_key() = 0;
-
-  /**
-   * Creates a new identifier object.
-   *
-   * @return Returns a new identifier object.
-   */
-  [[nodiscard]] virtual identifier create_identifier() const = 0;
-};
-
-}
-#endif //QUERY_IDENTIFIABLE_HPP