void IndexFactory::dropIndex(const listAlgorithmsTypePtr& algs, const std::set<std::string>& keys) {
IndexAlgorithm* result = NULL;
for (listAlgorithmsType::iterator i = algs->begin(); i != algs->end(); i++) {
IndexAlgorithm* impl = *i;
std::set<std::string> implKeys = impl->keys();
std::set<std::string>::const_iterator iKeys = keys.begin();
std::set<std::string>::const_iterator implItKeys = implKeys.begin();
while (true) {
if ((iKeys != keys.end()) && (implItKeys != implKeys.end())) {
std::string key1 = *iKeys;
std::string key2 = *implItKeys;
if (key1.compare(key2) != 0) {
break;
}
iKeys++;
implItKeys++;
// get to the end of both sides and all the keys are equal
if ((iKeys == keys.end()) && (implItKeys == implKeys.end())) {
algs->erase(i);
delete impl;
break;
}
}
}
}
}
IndexAlgorithm* IndexFactory::findIndex(const listAlgorithmsTypePtr& algs, const std::set<std::string>& keys) {
IndexAlgorithm* result = NULL;
for (listAlgorithmsType::const_iterator i = algs->begin(); i != algs->end(); i++) {
IndexAlgorithm* impl = *i;
std::set<std::string> implKeys = impl->keys();
std::set<std::string>::const_iterator iKeys = keys.begin();
std::set<std::string>::const_iterator implItKeys = implKeys.begin();
bool found = true;
while (true) {
if ((iKeys != keys.end()) && (implItKeys != implKeys.end())) {
std::string key1 = *iKeys;
std::string key2 = *implItKeys;
if (key1.compare(key2) != 0) {
found = false;
break;
}
iKeys++;
implItKeys++;
// get to the end of both sides and all the keys are equal
if ((iKeys == keys.end()) && (implItKeys == implKeys.end())) {
break;
}
} else {
found = false;
break;
}
}
// If all the keys match the implementation keys then this is an exact index
if (found) {
result = impl;
break;
}
}
return result;
}
