QxOrm  1.4.3
C++ Object Relational Mapping library
generic_container.h
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00001 /****************************************************************************
00002 **
00003 ** http://www.qxorm.com/
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00005 **
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00018 ** GNU General Public License Usage
00019 ** Alternatively, this file may be used under the terms of the GNU
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00031 
00032 #ifndef _QX_GENERIC_CONTAINER_H_
00033 #define _QX_GENERIC_CONTAINER_H_
00034 
00035 #ifdef _MSC_VER
00036 #pragma once
00037 #endif
00038 
00046 #include <boost/type_traits/is_pointer.hpp>
00047 
00048 #include <boost/unordered_set.hpp>
00049 #include <boost/unordered_map.hpp>
00050 
00051 #include <QxTraits/is_smart_ptr.h>
00052 #include <QxTraits/remove_attr.h>
00053 #include <QxTraits/remove_smart_ptr.h>
00054 #include <QxTraits/construct_ptr.h>
00055 
00056 namespace qx {
00057 namespace trait {
00058 
00059 class no_type
00060 { private: void dummy() const { ; } };
00061 
00066 template <class T>
00067 struct generic_container
00068 { typedef no_type type_item; typedef no_type type_key; typedef no_type type_value; typedef no_type type_value_qx; typedef no_type type_iterator; };
00069 
00070 template <typename Key, typename Value>
00071 struct generic_container_item
00072 {
00073 
00074    typedef Key type_key;
00075    typedef Value type_value;
00076    typedef typename qx::trait::remove_attr<Value>::type type_value_qx_tmp;
00077    typedef typename qx::trait::remove_smart_ptr<type_value_qx_tmp>::type type_value_qx;
00078 
00079    enum { is_key_pointer = (boost::is_pointer<type_key>::value || qx::trait::is_smart_ptr<type_key>::value) };
00080    enum { is_value_pointer = (boost::is_pointer<type_value>::value || qx::trait::is_smart_ptr<type_value>::value) };
00081 
00082 private:
00083 
00084    std::pair<type_key, type_value> m_pair;
00085 
00086 public:
00087 
00088    generic_container_item() { ; }
00089    generic_container_item(const Key & key, const Value & value) { m_pair = std::make_pair(key, value); }
00090    ~generic_container_item() { ; }
00091 
00092    inline type_key & key()                         { return m_pair.first; }
00093    inline type_value & value()                     { return m_pair.second; }
00094    inline const type_key & key() const             { return m_pair.first; }
00095    inline const type_value & value() const         { return m_pair.second; }
00096    inline type_value_qx & value_qx()               { return value_qx_Helper<is_value_pointer, type_value, type_value_qx, 0>::get(m_pair.second); }
00097    inline const type_value_qx & value_qx() const   { return value_qx_Helper<is_value_pointer, type_value, type_value_qx, 0>::get(m_pair.second); }
00098 
00099    inline void key(const Key & key)                { m_pair.first = key; }
00100    inline void value(const Value & value)          { m_pair.second = value; }
00101 
00102    static inline type_key newKey()     { return new_Helper<is_key_pointer, type_key, 0>::get(); }
00103    static inline type_value newValue() { return new_Helper<is_value_pointer, type_value, 0>::get(); }
00104 
00105 private:
00106 
00107    template <bool bIsPointer /* = true */, typename T, int dummy>
00108    struct new_Helper
00109    { static inline T get() { T t; qx::trait::construct_ptr<T>::get(t); return t; } };
00110 
00111    template <typename T, int dummy>
00112    struct new_Helper<false, T, dummy>
00113    { static inline T get() { return T(); } };
00114 
00115    template <bool bIsPointer /* = true */, typename T, typename U, int dummy>
00116    struct value_qx_Helper
00117    { static inline U & get(T & t) { return (* t); } };
00118 
00119    template <typename T, typename U, int dummy>
00120    struct value_qx_Helper<false, T, U, dummy>
00121    { static inline U & get(T & t) { return t; } };
00122 
00123 };
00124 
00125 } // namespace trait
00126 } // namespace qx
00127 
00128 #define QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(TypeContainer, TypeKey, TypeValue) \
00129 typedef qx::trait::generic_container_item< TypeKey, TypeValue > type_item; \
00130 typedef typename type_item::type_key type_key; \
00131 typedef typename type_item::type_value type_value; \
00132 typedef typename type_item::type_value_qx type_value_qx; \
00133 typedef typename TypeContainer::iterator type_iterator;
00134 
00135 namespace qx {
00136 namespace trait {
00137 namespace detail {
00138 
00139 template <typename Container, typename Item>
00140 struct generic_container_base
00141 {
00142 
00143    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
00144 
00145    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00146    static inline void clear(Container & t)                           { t.clear(); }
00147    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
00148    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00149    static inline Item * insertItem(Container & t, type_item & item)  { t.push_back(item.value()); return (& t.back()); }
00150    static inline type_iterator end(Container & t)                    { return t.end(); }
00151 
00152    static inline type_iterator begin(Container & t, type_item & item)
00153    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
00154 
00155    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00156    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
00157 
00158 };
00159 
00160 template <typename Container, typename Item>
00161 struct generic_container_base_without_reserve
00162 {
00163 
00164    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
00165 
00166    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00167    static inline void clear(Container & t)                           { t.clear(); }
00168    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
00169    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00170    static inline Item * insertItem(Container & t, type_item & item)  { t.push_back(item.value()); return (& t.back()); }
00171    static inline type_iterator end(Container & t)                    { return t.end(); }
00172 
00173    static inline type_iterator begin(Container & t, type_item & item)
00174    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
00175 
00176    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00177    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
00178 
00179 };
00180 
00181 template <typename Container, typename Item>
00182 struct generic_container_base_set
00183 {
00184 
00185    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
00186 
00187    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00188    static inline void clear(Container & t)                           { t.clear(); }
00189    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
00190    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00191    static inline Item * insertItem(Container & t, type_item & item)  { return const_cast<Item *>(& (* (t.insert(item.value()).first))); }
00192    static inline type_iterator end(Container & t)                    { return t.end(); }
00193 
00194    static inline type_iterator begin(Container & t, type_item & item)
00195    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
00196 
00197    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00198    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
00199 
00200 };
00201 
00202 template <typename Container, typename Item>
00203 struct generic_container_base_multi_set
00204 {
00205 
00206    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, qx::trait::no_type, Item)
00207 
00208    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00209    static inline void clear(Container & t)                           { t.clear(); }
00210    static inline void reserve(Container & t, long l)                 { Q_UNUSED(t); Q_UNUSED(l); }
00211    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00212    static inline Item * insertItem(Container & t, type_item & item)  { return const_cast<Item *>(& (* (t.insert(item.value())))); }
00213    static inline type_iterator end(Container & t)                    { return t.end(); }
00214 
00215    static inline type_iterator begin(Container & t, type_item & item)
00216    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin()); return t.begin(); }
00217 
00218    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00219    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr); return itr; }
00220 
00221 };
00222 
00223 template <typename Container, typename Key, typename Value>
00224 struct generic_container_base_key_value_std_style
00225 {
00226 
00227    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
00228 
00229    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00230    static inline void clear(Container & t)                           { t.clear(); }
00231    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
00232    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00233    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(std::make_pair(item.key(), item.value())).first->second)); }
00234    static inline type_iterator end(Container & t)                    { return t.end(); }
00235 
00236    static inline type_iterator begin(Container & t, type_item & item)
00237    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().second); item.key(* t.begin().first); return t.begin(); }
00238 
00239    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00240    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.second); item.key(* itr.first); return itr; }
00241 
00242 };
00243 
00244 template <typename Container, typename Key, typename Value>
00245 struct generic_container_base_key_value_multi_std_style
00246 {
00247 
00248    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
00249 
00250    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00251    static inline void clear(Container & t)                           { t.clear(); }
00252    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
00253    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00254    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(std::make_pair(item.key(), item.value()))->second)); }
00255    static inline type_iterator end(Container & t)                    { return t.end(); }
00256 
00257    static inline type_iterator begin(Container & t, type_item & item)
00258    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().second); item.key(* t.begin().first); return t.begin(); }
00259 
00260    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00261    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.second); item.key(* itr.first); return itr; }
00262 
00263 };
00264 
00265 template <typename Container, typename Key, typename Value>
00266 struct generic_container_base_key_value_qt_style
00267 {
00268 
00269    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(Container, Key, Value)
00270 
00271    static inline long size(const Container & t)                      { return static_cast<long>(t.size()); }
00272    static inline void clear(Container & t)                           { t.clear(); }
00273    static inline void reserve(Container & t, long l)                 { t.reserve(l); }
00274    static inline type_item createItem()                              { return type_item(type_item::newKey(), type_item::newValue()); }
00275    static inline Value * insertItem(Container & t, type_item & item) { return (& (t.insert(item.key(), item.value()).value())); }
00276    static inline type_iterator end(Container & t)                    { return t.end(); }
00277 
00278    static inline type_iterator begin(Container & t, type_item & item)
00279    { if (t.size() <= 0) { return t.end(); }; item.value(* t.begin().value()); item.key(* t.begin().key()); return t.begin(); }
00280 
00281    static inline type_iterator next(Container & t, type_iterator itr, type_item & item)
00282    { itr++; if (itr == t.end()) { return t.end(); }; item.value(* itr.value()); item.key(* itr.key()); return itr; }
00283 
00284 };
00285 
00286 } // namespace detail
00287 
00288 template <typename T>
00289 struct generic_container< std::vector<T> > : public qx::trait::detail::generic_container_base< std::vector<T>, T >
00290 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::vector, T), qx::trait::no_type, T) };
00291 
00292 template <typename T>
00293 struct generic_container< std::list<T> > : public qx::trait::detail::generic_container_base_without_reserve< std::list<T>, T >
00294 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::list, T), qx::trait::no_type, T) };
00295 
00296 template <typename T>
00297 struct generic_container< std::set<T> > : public qx::trait::detail::generic_container_base_set< std::set<T>, T >
00298 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::set, T), qx::trait::no_type, T) };
00299 
00300 template <typename Key, typename Value>
00301 struct generic_container< std::map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< std::map<Key, Value>, Key, Value >
00302 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::map, Key, Value), Key, Value) };
00303 
00304 template <typename T>
00305 struct generic_container< boost::unordered_set<T> > : public qx::trait::detail::generic_container_base_set< boost::unordered_set<T>, T >
00306 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(boost::unordered_set, T), qx::trait::no_type, T) };
00307 
00308 template <typename T>
00309 struct generic_container< boost::unordered_multiset<T> > : public qx::trait::detail::generic_container_base_multi_set< boost::unordered_multiset<T>, T >
00310 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(boost::unordered_multiset, T), qx::trait::no_type, T) };
00311 
00312 template <typename Key, typename Value>
00313 struct generic_container< boost::unordered_map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< boost::unordered_map<Key, Value>, Key, Value >
00314 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(boost::unordered_map, Key, Value), Key, Value) };
00315 
00316 template <typename Key, typename Value>
00317 struct generic_container< boost::unordered_multimap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_multi_std_style< boost::unordered_multimap<Key, Value>, Key, Value >
00318 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(boost::unordered_multimap, Key, Value), Key, Value) };
00319 
00320 #ifdef _QX_CPP_11_CONTAINER
00321 #ifndef BOOST_NO_CXX11_STD_UNORDERED
00322 
00323 template <typename T>
00324 struct generic_container< std::unordered_set<T> > : public qx::trait::detail::generic_container_base_set< std::unordered_set<T>, T >
00325 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::unordered_set, T), qx::trait::no_type, T) };
00326 
00327 template <typename T>
00328 struct generic_container< std::unordered_multiset<T> > : public qx::trait::detail::generic_container_base_multi_set< std::unordered_multiset<T>, T >
00329 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(std::unordered_multiset, T), qx::trait::no_type, T) };
00330 
00331 template <typename Key, typename Value>
00332 struct generic_container< std::unordered_map<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_std_style< std::unordered_map<Key, Value>, Key, Value >
00333 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::unordered_map, Key, Value), Key, Value) };
00334 
00335 template <typename Key, typename Value>
00336 struct generic_container< std::unordered_multimap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_multi_std_style< std::unordered_multimap<Key, Value>, Key, Value >
00337 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(std::unordered_multimap, Key, Value), Key, Value) };
00338 
00339 #endif // BOOST_NO_CXX11_STD_UNORDERED
00340 #endif // _QX_CPP_11_CONTAINER
00341 
00342 template <typename T>
00343 struct generic_container< QVector<T> > : public qx::trait::detail::generic_container_base< QVector<T>, T >
00344 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QVector, T), qx::trait::no_type, T) };
00345 
00346 #if (QT_VERSION >= 0x040700)
00347 
00348 template <typename T>
00349 struct generic_container< QList<T> > : public qx::trait::detail::generic_container_base< QList<T>, T >
00350 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QList, T), qx::trait::no_type, T) };
00351 
00352 #else // (QT_VERSION >= 0x040700)
00353 
00354 template <typename T>
00355 struct generic_container< QList<T> > : public qx::trait::detail::generic_container_base_without_reserve< QList<T>, T >
00356 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QList, T), qx::trait::no_type, T) };
00357 
00358 #endif // (QT_VERSION >= 0x040700)
00359 
00360 template <typename T>
00361 struct generic_container< QLinkedList<T> > : public qx::trait::detail::generic_container_base_without_reserve< QLinkedList<T>, T >
00362 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QLinkedList, T), qx::trait::no_type, T) };
00363 
00364 template <typename T>
00365 struct generic_container< QSet<T> > : public qx::trait::detail::generic_container_base_multi_set< QSet<T>, T >
00366 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1(QSet, T), qx::trait::no_type, T) };
00367 
00368 template <typename Key, typename Value>
00369 struct generic_container< QMap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMap<Key, Value>, Key, Value >
00370 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMap, Key, Value), Key, Value) };
00371 
00372 template <typename Key, typename Value>
00373 struct generic_container< QMultiMap<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMultiMap<Key, Value>, Key, Value >
00374 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMultiMap, Key, Value), Key, Value) };
00375 
00376 template <typename Key, typename Value>
00377 struct generic_container< QHash<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QHash<Key, Value>, Key, Value >
00378 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QHash, Key, Value), Key, Value) };
00379 
00380 template <typename Key, typename Value>
00381 struct generic_container< QMultiHash<Key, Value> > : public qx::trait::detail::generic_container_base_key_value_qt_style< QMultiHash<Key, Value>, Key, Value >
00382 { QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(QMultiHash, Key, Value), Key, Value) };
00383 
00384 template <typename Key, typename Value>
00385 struct generic_container< qx::QxCollection<Key, Value> >
00386 {
00387 
00388    QX_TRAIT_GENERIC_CONTAINER_TYPEDEF(QX_TEMPLATE_T_P1_P2(qx::QxCollection, Key, Value), Key, Value)
00389 
00390    static inline long size(const qx::QxCollection<Key, Value> & t)                        { return static_cast<long>(t.size()); }
00391    static inline void clear(qx::QxCollection<Key, Value> & t)                             { t.clear(); }
00392    static inline void reserve(qx::QxCollection<Key, Value> & t, long l)                   { t.reserve(l); }
00393    static inline type_item createItem()                                                   { return type_item(type_item::newKey(), type_item::newValue()); }
00394    static inline Value * insertItem(qx::QxCollection<Key, Value> & t, type_item & item)   { t.insert(item.key(), item.value()); return const_cast<Value *>(& t.getByKey(item.key())); }
00395    static inline type_iterator end(qx::QxCollection<Key, Value> & t)                      { return t.end(); }
00396 
00397    static inline type_iterator begin(qx::QxCollection<Key, Value> & t, type_item & item)
00398    { if (t.size() <= 0) { return t.end(); }; item.value(t.getByIndex(0)); item.key(t.getKeyByIndex(0)); return t.begin(); }
00399 
00400    static inline type_iterator next(qx::QxCollection<Key, Value> & t, type_iterator itr, type_item & item)
00401    { itr++; if (itr == t.end()) { return t.end(); }; long l = (itr - t.begin()); item.value(t.getByIndex(l)); item.key(t.getKeyByIndex(l)); return itr; }
00402 
00403 };
00404 
00405 } // namespace trait
00406 } // namespace qx
00407 
00408 #endif // _QX_GENERIC_CONTAINER_H_