Method GetArrayDeletedValues

lib/icingadb/icingadb-utility.cpp:454–485

Returns the items that exist in "arrayOld" but not in "arrayNew"

// Returns the items that exist in "arrayOld" but not in "arrayNew"
std::vector<Value> IcingaDB::GetArrayDeletedValues(const Array::Ptr& arrayOld, const Array::Ptr& arrayNew) {
	std::vector<Value> deletedValues;

	if (!arrayOld) {
		return deletedValues;
	}

	if (!arrayNew) {
		ObjectLock olock (arrayOld);
		return std::vector<Value>(arrayOld->Begin(), arrayOld->End());
	}

	std::vector<Value> vectorOld;
	{
		ObjectLock olock (arrayOld);
		vectorOld.assign(arrayOld->Begin(), arrayOld->End());
	}
	std::sort(vectorOld.begin(), vectorOld.end());
	vectorOld.erase(std::unique(vectorOld.begin(), vectorOld.end()), vectorOld.end());

	std::vector<Value> vectorNew;
	{
		ObjectLock olock (arrayNew);
		vectorNew.assign(arrayNew->Begin(), arrayNew->End());
	}
	std::sort(vectorNew.begin(), vectorNew.end());
	vectorNew.erase(std::unique(vectorNew.begin(), vectorNew.end()), vectorNew.end());

	std::set_difference(vectorOld.begin(), vectorOld.end(), vectorNew.begin(), vectorNew.end(), std::back_inserter(deletedValues));

	return deletedValues;
}

// Returns the keys that exist in "dictOld" but not in "dictNew"
std::vector<String> IcingaDB::GetDictionaryDeletedKeys(const Dictionary::Ptr& dictOld, const Dictionary::Ptr& dictNew) {