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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
#include "tidentifiable.h"
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Toshihiro Shimizu |
890ddd |
#include <set></set>
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
namespace {
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
class IdentifierTable { // singleton
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
unsigned long m_lastId;
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Shinya Kitaoka |
120a6e |
std::map<unsigned *="" long,="" tidentifiable=""> m_table;</unsigned>
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Shinya Kitaoka |
120a6e |
std::set<tidentifiable *=""> m_objects;</tidentifiable>
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
IdentifierTable() : m_lastId(0) {}
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Toshihiro Shimizu |
890ddd |
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Toshihiro Shimizu |
890ddd |
public:
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Shinya Kitaoka |
120a6e |
static IdentifierTable *instance() {
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Shinya Kitaoka |
120a6e |
// NON DEVE MORIRE
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Shinya Kitaoka |
120a6e |
// static IdentifierTable _instance;
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Shinya Kitaoka |
120a6e |
// return &_instance;
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Shinya Kitaoka |
120a6e |
static IdentifierTable *_instance = 0;
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Shinya Kitaoka |
120a6e |
if (!_instance) _instance = new IdentifierTable;
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Shinya Kitaoka |
120a6e |
return _instance;
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Shinya Kitaoka |
120a6e |
}
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Shinya Kitaoka |
120a6e |
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Shinya Kitaoka |
120a6e |
unsigned long getNextId() { return ++m_lastId; }
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Shinya Kitaoka |
120a6e |
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Shinya Kitaoka |
120a6e |
void insert(TIdentifiable *o) {
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Shinya Kitaoka |
120a6e |
unsigned long id = o->getIdentifier();
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Shinya Kitaoka |
120a6e |
std::map<unsigned *="" long,="" tidentifiable="">::iterator it = m_table.find(id);</unsigned>
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Shinya Kitaoka |
120a6e |
if (it != m_table.end()) {
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Shinya Kitaoka |
120a6e |
if (it->second == o) return;
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Shinya Kitaoka |
120a6e |
m_objects.erase(it->second);
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Shinya Kitaoka |
120a6e |
it->second = o;
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Shinya Kitaoka |
120a6e |
} else {
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Shinya Kitaoka |
120a6e |
m_table[id] = o;
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Shinya Kitaoka |
120a6e |
}
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Shinya Kitaoka |
120a6e |
m_objects.insert(o);
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Shinya Kitaoka |
120a6e |
}
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Shinya Kitaoka |
120a6e |
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Shinya Kitaoka |
120a6e |
void erase(TIdentifiable *o) {
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Shinya Kitaoka |
120a6e |
unsigned long id = o->getIdentifier();
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Shinya Kitaoka |
120a6e |
m_table.erase(id);
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Shinya Kitaoka |
120a6e |
m_objects.erase(o);
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Shinya Kitaoka |
120a6e |
}
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Shinya Kitaoka |
120a6e |
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Shinya Kitaoka |
120a6e |
TIdentifiable *fetch(unsigned long id) {
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Shinya Kitaoka |
120a6e |
std::map<unsigned *="" long,="" tidentifiable="">::iterator it = m_table.find(id);</unsigned>
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Shinya Kitaoka |
120a6e |
return it == m_table.end() ? 0 : it->second;
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Shinya Kitaoka |
120a6e |
}
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Toshihiro Shimizu |
890ddd |
};
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
} // namespace
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
TIdentifiable::TIdentifiable() : m_id(0) {}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
TIdentifiable::~TIdentifiable() {
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Shinya Kitaoka |
120a6e |
if (m_id != 0) IdentifierTable::instance()->erase(this);
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
TIdentifiable::TIdentifiable(const TIdentifiable &src) : m_id(src.m_id) {}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
const TIdentifiable &TIdentifiable::operator=(const TIdentifiable &src) {
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Shinya Kitaoka |
120a6e |
if (src.m_id != m_id && m_id != 0) IdentifierTable::instance()->erase(this);
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Shinya Kitaoka |
120a6e |
m_id = src.m_id;
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Shinya Kitaoka |
120a6e |
return *this;
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
void TIdentifiable::setIdentifier(unsigned long id) {
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Shinya Kitaoka |
120a6e |
bool wasStored = m_id > 0 && IdentifierTable::instance()->fetch(m_id) == this;
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Shinya Kitaoka |
120a6e |
if (m_id != id && m_id != 0) IdentifierTable::instance()->erase(this);
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Shinya Kitaoka |
120a6e |
m_id = id;
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Shinya Kitaoka |
120a6e |
if (wasStored) IdentifierTable::instance()->insert(this);
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
void TIdentifiable::setNewIdentifier() {
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Shinya Kitaoka |
120a6e |
setIdentifier(IdentifierTable::instance()->getNextId());
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
void TIdentifiable::storeByIdentifier() {
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Shinya Kitaoka |
120a6e |
assert(getIdentifier() >= 1);
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Shinya Kitaoka |
120a6e |
IdentifierTable::instance()->insert(this);
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Toshihiro Shimizu |
890ddd |
}
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Toshihiro Shimizu |
890ddd |
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Shinya Kitaoka |
120a6e |
TIdentifiable *TIdentifiable::fetchByIdentifier(unsigned long id) {
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Shinya Kitaoka |
120a6e |
return IdentifierTable::instance()->fetch(id);
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Toshihiro Shimizu |
890ddd |
}
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