• 1- qxBlog project - blog management in C++
• 2- all files in qxBlog project
• 3- qxBlog.pro file
• 4- export.h file
• 5- precompiled.h file
• 6- author.h and author.cpp (relationship one-to-many)
• 7- comment.h and comment.cpp (relationship many-to-one)
• 8- category.h and category.cpp (relationship many-to-many)
• 9- blog.h and blog.cpp (relationship one-to-many, many-to-one and many-to-many)
• 10- main.cpp file
• 11- relationship one-to-one with person class

#ifndef _QX_BLOG_EXPORT_H_
#define _QX_BLOG_EXPORT_H_

#ifdef _BUILDING_QX_BLOG
#define QX_BLOG_DLL_EXPORT QX_DLL_EXPORT_HELPER
#else // _BUILDING_QX_BLOG
#define QX_BLOG_DLL_EXPORT QX_DLL_IMPORT_HELPER
#endif // _BUILDING_QX_BLOG

#ifdef _BUILDING_QX_BLOG
#define QX_REGISTER_HPP_QX_BLOG QX_REGISTER_HPP_EXPORT_DLL
#define QX_REGISTER_CPP_QX_BLOG QX_REGISTER_CPP_EXPORT_DLL
#else // _BUILDING_QX_BLOG
#define QX_REGISTER_HPP_QX_BLOG QX_REGISTER_HPP_IMPORT_DLL
#define QX_REGISTER_CPP_QX_BLOG QX_REGISTER_CPP_IMPORT_DLL
#endif // _BUILDING_QX_BLOG

#endif // _QX_BLOG_EXPORT_H_

#ifndef _QX_BLOG_PRECOMPILED_HEADER_H_
#define _QX_BLOG_PRECOMPILED_HEADER_H_

#include <QxOrm.h>

#include "export.h"

#endif // _QX_BLOG_PRECOMPILED_HEADER_H_

#ifndef _QX_BLOG_AUTHOR_H_
#define _QX_BLOG_AUTHOR_H_

class blog;

class QX_BLOG_DLL_EXPORT author
{
public:
// -- typedef
   typedef boost::shared_ptr<blog> blog_ptr;
   typedef std::vector<blog_ptr> list_blog;
// -- enum
   enum enum_sex { male, female, unknown };
// -- properties
   QString     m_id;
   QString     m_name;
   QDate       m_birthdate;
   enum_sex    m_sex;
   list_blog   m_blogX;
// -- contructor, virtual destructor
   author() : m_id(0), m_sex(unknown) { ; }
   virtual ~author() { ; }
// -- methods
   int age() const;
};

QX_REGISTER_PRIMARY_KEY(author, QString)
QX_REGISTER_HPP_QX_BLOG(author, qx::trait::no_base_class_defined, 0)

typedef boost::shared_ptr<author> author_ptr;
typedef qx::QxCollection<QString, author_ptr> list_author;

#endif // _QX_BLOG_AUTHOR_H_

#include "../include/precompiled.h"

#include "../include/author.h"
#include "../include/blog.h"

#include <QxOrm_Impl.h>

QX_REGISTER_CPP_QX_BLOG(author)

namespace qx {
template <> void register_class(QxClass<author> & t)
{
   t.id(& author::m_id, "author_id");

   t.data(& author::m_name, "name");
   t.data(& author::m_birthdate, "birthdate");
   t.data(& author::m_sex, "sex");

   t.relationOneToMany(& author::m_blogX, "list_blog", "author_id");

   t.fct_0<int>(& author::age, "age");
}}

int author::age() const
{
   if (! m_birthdate.isValid()) { return -1; }
   return (QDate::currentDate().year() - m_birthdate.year());
}

#ifndef _QX_BLOG_COMMENT_H_
#define _QX_BLOG_COMMENT_H_

class blog;

class QX_BLOG_DLL_EXPORT comment
{
public:
// -- typedef
   typedef boost::shared_ptr<blog> blog_ptr;
// -- properties
   long        m_id;
   QString     m_text;
   QDateTime   m_dt_create;
   blog_ptr    m_blog;
// -- contructor, virtual destructor
   comment() : m_id(0) { ; }
   virtual ~comment() { ; }
};

QX_REGISTER_HPP_QX_BLOG(comment, qx::trait::no_base_class_defined, 0)

typedef boost::shared_ptr<comment> comment_ptr;
typedef QList<comment_ptr> list_comment;

#endif // _QX_BLOG_COMMENT_H_

#include "../include/precompiled.h"

#include "../include/comment.h"
#include "../include/blog.h"

#include <QxOrm_Impl.h>

QX_REGISTER_CPP_QX_BLOG(comment)

namespace qx {
template <> void register_class(QxClass<comment> & t)
{
   t.id(& comment::m_id, "comment_id");

   t.data(& comment::m_text, "comment_text");
   t.data(& comment::m_dt_create, "date_creation");

   t.relationManyToOne(& comment::m_blog, "blog_id");
}}

#ifndef _QX_BLOG_CATEGORY_H_
#define _QX_BLOG_CATEGORY_H_

class blog;

class QX_BLOG_DLL_EXPORT category
{
public:
// -- typedef
   typedef boost::shared_ptr<blog> blog_ptr;
   typedef qx::QxCollection<long, blog_ptr> list_blog;
// -- properties
   long        m_id;
   QString     m_name;
   QString     m_desc;
   list_blog   m_blogX;
// -- contructor, virtual destructor
   category() : m_id(0) { ; }
   virtual ~category() { ; }
};

QX_REGISTER_HPP_QX_BLOG(category, qx::trait::no_base_class_defined, 0)

typedef QSharedPointer<category> category_ptr;
typedef qx::QxCollection<long, category_ptr> list_category;

#endif // _QX_BLOG_CATEGORY_H_

#include "../include/precompiled.h"

#include "../include/category.h"
#include "../include/blog.h"

#include <QxOrm_Impl.h>

QX_REGISTER_CPP_QX_BLOG(category)

namespace qx {
template <> void register_class(QxClass<category> & t)
{
   t.id(& category::m_id, "category_id");

   t.data(& category::m_name, "name");
   t.data(& category::m_desc, "description");

   t.relationManyToMany(& category::m_blogX, "list_blog", "category_blog", "category_id", "blog_id");
}}

#ifndef _QX_BLOG_BLOG_H_
#define _QX_BLOG_BLOG_H_

#include "author.h"
#include "comment.h"
#include "category.h"

class QX_BLOG_DLL_EXPORT blog
{
public:
// -- properties
   long           m_id;
   QString        m_text;
   QDateTime      m_dt_creation;
   author_ptr     m_author;
   list_comment   m_commentX;
   list_category  m_categoryX;
// -- contructor, virtual destructor
   blog() : m_id(0) { ; }
   virtual ~blog() { ; }
};

QX_REGISTER_HPP_QX_BLOG(blog, qx::trait::no_base_class_defined, 0)

typedef boost::shared_ptr<blog> blog_ptr;
typedef std::vector<blog_ptr> list_blog;

#endif // _QX_BLOG_BLOG_H_

#include "../include/precompiled.h"

#include "../include/blog.h"

#include <QxOrm_Impl.h>

QX_REGISTER_CPP_QX_BLOG(blog)

namespace qx {
template <> void register_class(QxClass<blog> & t)
{
   t.id(& blog::m_id, "blog_id");

   t.data(& blog::m_text, "blog_text");
   t.data(& blog::m_dt_creation, "date_creation");

   t.relationManyToOne(& blog::m_author, "author_id");
   t.relationOneToMany(& blog::m_commentX, "list_comment", "blog_id");
   t.relationManyToMany(& blog::m_categoryX, "list_category", "category_blog", "blog_id", "category_id");
}}

#include "../include/precompiled.h"

#include <QtGui/qapplication.h>

#include "../include/blog.h"
#include "../include/author.h"
#include "../include/comment.h"
#include "../include/category.h"

#include <QxOrm_Impl.h>

int main(int argc, char * argv[])
{
   // Qt application
   QApplication app(argc, argv);

   // Parameters to connect to database
   qx::QxSqlDatabase::getSingleton()->setDriverName("QSQLITE");
   qx::QxSqlDatabase::getSingleton()->setDatabaseName("./qxBlog.sqlite");
   qx::QxSqlDatabase::getSingleton()->setHostName("localhost");
   qx::QxSqlDatabase::getSingleton()->setUserName("root");
   qx::QxSqlDatabase::getSingleton()->setPassword("");

   // Ensure there is no element in database
   QSqlError daoError = qx::dao::delete_all<author>();
   daoError = qx::dao::delete_all<comment>();
   daoError = qx::dao::delete_all<category>();
   daoError = qx::dao::delete_all<blog>();

   // Create a list of 3 author
   author_ptr author_1; author_1.reset(new author());
   author_ptr author_2; author_2.reset(new author());
   author_ptr author_3; author_3.reset(new author());

   author_1->m_id = "author_id_1"; author_1->m_name = "author_1";
   author_1->m_sex = author::male; author_1->m_birthdate = QDate::currentDate();
   author_2->m_id = "author_id_2"; author_2->m_name = "author_2";
   author_2->m_sex = author::female; author_2->m_birthdate = QDate::currentDate();
   author_3->m_id = "author_id_3"; author_3->m_name = "author_3";
   author_3->m_sex = author::female; author_3->m_birthdate = QDate::currentDate();

   list_author authorX;
   authorX.insert(author_1->m_id, author_1);
   authorX.insert(author_2->m_id, author_2);
   authorX.insert(author_3->m_id, author_3);

   // Insert list of 3 author into database
   daoError = qx::dao::insert(authorX);
   qAssert(qx::dao::count<author>() == 3);

   // Clone author n°2 : 'author_id_2'
   author_ptr author_clone = qx::clone(* author_2);
   qAssert(author_clone->m_id == "author_id_2");
   qAssert(author_clone->m_sex == author::female);

   // Create a query to fetch only female author : 'author_id_2' and 'author_id_3'
   qx::QxSqlQuery query("WHERE author.sex = :sex");
   query.bind(":sex", author::female);

   list_author list_of_female_author;
   daoError = qx::dao::fetch_by_query(query, list_of_female_author);
   qAssert(list_of_female_author.count() == 2);

   // Dump list of female author (XML or JSON serialization)
   qx::dump(list_of_female_author);

   // Create 3 categories
   category_ptr category_1 = category_ptr(new category());
   category_ptr category_2 = category_ptr(new category());
   category_ptr category_3 = category_ptr(new category());

   category_1->m_name = "category_1"; category_1->m_desc = "desc_1";
   category_2->m_name = "category_2"; category_2->m_desc = "desc_2";
   category_3->m_name = "category_3"; category_3->m_desc = "desc_3";

   { // Create a scope to destroy temporary connexion to database

   // Open a transaction to database
   QSqlDatabase db = qx::QxSqlDatabase::getDatabase();
   bool bCommit = db.transaction();

   // Insert 3 categories into database, use 'db' parameter for the transaction
   daoError = qx::dao::insert(category_1, (& db));    bCommit = (bCommit && ! daoError.isValid());
   daoError = qx::dao::insert(category_2, (& db));    bCommit = (bCommit && ! daoError.isValid());
   daoError = qx::dao::insert(category_3, (& db));    bCommit = (bCommit && ! daoError.isValid());

   qAssert(bCommit);
   qAssert(category_1->m_id != 0);
   qAssert(category_2->m_id != 0);
   qAssert(category_3->m_id != 0);

   // Terminate transaction => commit or rollback if there is error
   if (bCommit) { db.commit(); }
   else { db.rollback(); }

   } // End of scope : 'db' is destroyed

   // Create a blog with the class name (factory)
   boost::any blog_any = qx::create("blog");
   blog_ptr blog_1 = boost::any_cast<blog_ptr>(blog_any);
   blog_1->m_text = "blog_text_1";
   blog_1->m_dt_creation = QDateTime::currentDateTime();
   blog_1->m_author = author_1;

   // Insert 'blog_1' into database with 'save()' method
   daoError = qx::dao::save(blog_1);

   // Modify 'blog_1' properties and save into database
   blog_1->m_text = "update blog_text_1";
   blog_1->m_author = author_2;
   daoError = qx::dao::save(blog_1);

   // Add 2 comments to 'blog_1'
   comment_ptr comment_1; comment_1.reset(new comment());
   comment_ptr comment_2; comment_2.reset(new comment());

   comment_1->m_text = "comment_1 text";
   comment_1->m_dt_create = QDateTime::currentDateTime();
   comment_1->m_blog = blog_1;
   comment_2->m_text = "comment_2 text";
   comment_2->m_dt_create = QDateTime::currentDateTime();
   comment_2->m_blog = blog_1;

   daoError = qx::dao::insert(comment_1);
   daoError = qx::dao::insert(comment_2);
   qAssert(qx::dao::count<comment>() == 2);

   // Add 2 categories to 'blog_1' => must insert into extra-table 'category_blog'
   blog_1->m_categoryX.insert(category_1->m_id, category_1);
   blog_1->m_categoryX.insert(category_3->m_id, category_3);
   daoError = qx::dao::save_with_relation("list_category", blog_1);

   // Fetch blog into a new variable with all relation : 'author', 'comment' and 'category'
   blog_ptr blog_tmp; blog_tmp.reset(new blog());
   blog_tmp->m_id = blog_1->m_id;
   daoError = qx::dao::fetch_by_id_with_all_relation(blog_tmp);

   qAssert(blog_tmp->m_commentX.count() == 2);
   qAssert(blog_tmp->m_categoryX.count() == 2);
   qAssert(blog_tmp->m_text == "update blog_text_1");
   qAssert(blog_tmp->m_author && blog_tmp->m_author->m_id == "author_id_2");

   // Dump 'blog_tmp' result from database (XML or JSON serialization)
   qx::dump(blog_tmp);

   // Call 'age()' method with class name and method name (reflection)
   qx_bool bInvokeOk = qx::QxClassX::invoke("author", "age", author_1);
   qAssert(bInvokeOk);

   return 0;
}