// file : relationship/employee.hxx // copyright : not copyrighted - public domain #ifndef EMPLOYEE_HXX #define EMPLOYEE_HXX #include <vector> #include <string> #include <odb/core.hxx> // Include TR1 <memory> header in a compiler-specific fashion. Fall back // on the Boost implementation if the compiler does not support TR1. // #include <odb/tr1/memory.hxx> using std::tr1::shared_ptr; // The "pointer architecture" in this object model is as follows: All // object pointers are eager. The employee class holds shared pointers // to employer and projects. // // The following unidirectional relationships are used: // // to-one : employee -> employer // to-many : employee -> project // // Forward declarations. // class employer; class project; class employee; typedef std::vector<shared_ptr<project> > projects; #pragma db object class employer { public: employer (const std::string& name) : name_ (name) { } const std::string& name () const { return name_; } private: friend class odb::access; employer () {} #pragma db id std::string name_; }; #pragma db object class project { public: project (const std::string& name) : name_ (name) { } const std::string& name () const { return name_; } private: friend class odb::access; project () {} #pragma db id std::string name_; }; #pragma db object class employee { public: typedef ::employer employer_type; employee (const std::string& first, const std::string& last, shared_ptr<employer_type> employer) : first_ (first), last_ (last), employer_ (employer) { } // Name. // const std::string& first () const { return first_; } const std::string& last () const { return last_; } // Employer. // shared_ptr<employer_type> employer () const { return employer_; } void employer (shared_ptr<employer_type> employer) { employer_ = employer; } // Projects. // typedef ::projects projects_type; const projects_type& projects () const { return projects_; } projects_type& projects () { return projects_; } private: friend class odb::access; employee () {} #pragma db id auto unsigned long id_; std::string first_; std::string last_; #pragma db not_null shared_ptr<employer_type> employer_; #pragma db value_not_null unordered projects_type projects_; }; #endif // EMPLOYEE_HXX