C++ SharedPtr::selector方法代码示例

bool MongoAuthentication::authenticateMongoCR(const std::string &user, const std::string &pwd)
{
	bool ret = false;
	_user = user;
	_pwd = pwd;

	try {
		std::string nonce;
		Poco::SharedPtr<Poco::MongoDB::QueryRequest> command = _db.createCommand();
		command->selector().add<Poco::Int32>("getnonce", 1);
		command->setNumberToReturn(1);

		Poco::MongoDB::ResponseMessage response;
		_conn.sendRequest(*command, response);

		if (response.documents().size() > 0) {
			Poco::MongoDB::Document::Ptr doc = response.documents()[0];
			nonce = doc->get<std::string>("nonce", "");

			std::string password = _user + ":mongo:" + _pwd;

			Poco::MD5Engine md5;
			md5.update(password);
			std::string hashedPassword(Poco::DigestEngine::digestToHex(md5.digest()));
			std::string key = nonce + _user + hashedPassword;
			md5.reset();
			md5.update(key);
			std::string hashedKey(Poco::DigestEngine::digestToHex(md5.digest()));


			Poco::SharedPtr<Poco::MongoDB::QueryRequest> command = _db.createCommand();
			command->selector()
				.add<Poco::Int32>("authenticate", 1)
				.add<std::string>("user", _user)
				.add<std::string>("nonce", nonce)
				.add<std::string>("key", hashedKey);      // hex_md5( n.nonce + username + hex_md5( username + ":mongo:" + password ) )

			_conn.sendRequest(*command, response);

			if (response.documents().size() > 0 && response.documents()[0]->get<double>("ok")) {
				ret = true;
			}
		}
	} catch (Poco::Exception &) {
		throw Poco::ApplicationException("auth failed.");
	}

	return ret;
}

Poco::SharedPtr<Poco::MongoDB::QueryRequest> Database::createCountRequest(const std::string& collectionName) const
{
	Poco::SharedPtr<Poco::MongoDB::QueryRequest> request = createQueryRequest("$cmd");
	request->setNumberToReturn(1);
	request->selector().add("count", collectionName);
	return request;
}

// SELECT DISTINCT birthyear FROM players WHERE birthyear > 1980
void sample10(Poco::MongoDB::Connection& connection)
{
	std::cout << "*** SAMPLE 10 ***" << std::endl;

	Poco::MongoDB::Database db("sample");
	Poco::SharedPtr<Poco::MongoDB::QueryRequest> command = db.createCommand();

	command->selector()
		.add("distinct", "players")
		.add("key", "birthyear")
		.addNewDocument("query")
		.addNewDocument("birthyear")
		.add("$gt", 1980);

	Poco::MongoDB::ResponseMessage response;
	connection.sendRequest(*command, response);
	if ( response.hasDocuments() )
	{
		Poco::MongoDB::Array::Ptr values = response.documents()[0]->get<Poco::MongoDB::Array::Ptr>("values");
		for(int i = 0; i < values->size(); ++i )
		{
			std::cout << values->get<int>(i) << std::endl;
		}
	}

}

//DELETE players WHERE firstname = 'Victor'
void sample13(Poco::MongoDB::Connection& connection)
{
	std::cout << "*** SAMPLE 13 ***" << std::endl;

	Poco::MongoDB::Database db("sample");
	Poco::SharedPtr<Poco::MongoDB::DeleteRequest> request = db.createDeleteRequest("players");
	request->selector().add("firstname", "Victor");

	connection.sendRequest(*request);

	Poco::MongoDB::Document::Ptr lastError = db.getLastErrorDoc(connection);
	std::cout << "LastError: " << lastError->toString(2) << std::endl;
}

Document::Ptr Database::getLastErrorDoc(Connection& connection) const
{
	Document::Ptr errorDoc;

	Poco::SharedPtr<Poco::MongoDB::QueryRequest> request = createQueryRequest("$cmd");
	request->setNumberToReturn(1);
	request->selector().add("getLastError", 1);

	Poco::MongoDB::ResponseMessage response;
	connection.sendRequest(*request, response);

	if ( response.documents().size() > 0 )
	{
		errorDoc = response.documents()[0];
	}

	return errorDoc;
}

// SELECT COUNT(*) FROM players WHERE birthyear > 1980
void sample11(Poco::MongoDB::Connection& connection)
{
	std::cout << "*** SAMPLE 11 ***" << std::endl;

	Poco::MongoDB::Database db("sample");
	Poco::SharedPtr<Poco::MongoDB::QueryRequest> count = db.createCountRequest("players");
	count->selector().addNewDocument("query")
		.addNewDocument("birthyear")
			.add("$gt", 1980);

	Poco::MongoDB::ResponseMessage response;
	connection.sendRequest(*count, response);

	if ( response.hasDocuments() )
	{
		std::cout << "Count: " << response.documents()[0]->get<double>("n") << std::endl;
	}
}

void MongoDBTest::testDBQueryRequest()
{
	if (!_connected)
	{
		std::cout << "Not connected, test skipped." << std::endl;
		return;
	}

	Database db("team");
	Poco::SharedPtr<Poco::MongoDB::QueryRequest> request = db.createQueryRequest("players");
	request->selector().add("lastname" , std::string("Braem"));

	Poco::MongoDB::ResponseMessage response;
	_mongo.sendRequest(*request, response);

	if ( response.documents().size() > 0 )
	{
		Poco::MongoDB::Document::Ptr doc = response.documents()[0];

		try
		{
			std::string lastname = doc->get<std::string>("lastname");
			assert(lastname.compare("Braem") == 0);
			std::string firstname = doc->get<std::string>("firstname");
			assert(firstname.compare("Franky") == 0);
			Poco::Timestamp birthDateTimestamp = doc->get<Poco::Timestamp>("birthdate");
			Poco::DateTime birthDate(birthDateTimestamp);
			assert(birthDate.year() == 1969 && birthDate.month() == 3 && birthDate.day() == 9);
			Poco::Timestamp lastupdatedTimestamp = doc->get<Poco::Timestamp>("lastupdated");
			assert(doc->isType<NullValue>("unknown"));

			std::string id = doc->get("_id")->toString();
			std::cout << id << std::endl;
		}
		catch(Poco::NotFoundException& nfe)
		{
			fail(nfe.message() + " not found.");
		}
	}
	else
	{
		fail("No document returned");
	}
}

void MongoDBTest::testCommand() {
	Poco::MongoDB::Database db("team");
	Poco::SharedPtr<Poco::MongoDB::QueryRequest> command = db.createCommand();
	command->selector().add("create", "fixCol")
		.add("capped", true)
		.add("max", 1024*1024)
		.add("size", 1024);

	Poco::MongoDB::ResponseMessage response;
	_mongo->sendRequest(*command, response);
	if ( response.documents().size() > 0 )
	{
		Poco::MongoDB::Document::Ptr doc = response.documents()[0];
	}
	else
	{
		Poco::MongoDB::Document::Ptr lastError = db.getLastErrorDoc(*_mongo);
		fail(lastError->toString(2));
	}
}