polardbxengine/plugin/x/client/validator/descriptor.h

70 lines
2.4 KiB
C++

/*
* Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License, version 2.0,
* as published by the Free Software Foundation.
*
* This program is also distributed with certain software (including
* but not limited to OpenSSL) that is licensed under separate terms,
* as designated in a particular file or component or in included license
* documentation. The authors of MySQL hereby grant you an additional
* permission to link the program and your derivative works with the
* separately licensed software that they have included with MySQL.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License, version 2.0, for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
*/
#ifndef PLUGIN_X_CLIENT_VALIDATOR_DESCRIPTOR_H_
#define PLUGIN_X_CLIENT_VALIDATOR_DESCRIPTOR_H_
#include <cassert>
#include <memory>
#include <string>
#include <utility>
#include "plugin/x/client/mysqlxclient/mysqlxclient_error.h"
#include "plugin/x/client/mysqlxclient/xerror.h"
#include "plugin/x/client/validator/value_validator.h"
namespace xcl {
class Descriptor {
public:
Descriptor() = default;
explicit Descriptor(Validator *validator) : m_validator(validator) {}
Descriptor(Descriptor &&descpriptor) = default;
virtual ~Descriptor() = default;
template <typename Value_type>
XError is_valid(void *context, const Value_type &value) {
Argument_value argument_value{value};
if (!m_validator || !m_validator->valid_type(argument_value))
return get_supported_error();
if (!m_validator->valid_value(argument_value))
return get_wrong_value_error(argument_value);
m_validator->store(context, argument_value);
return {};
}
virtual XError get_supported_error() const = 0;
virtual XError get_wrong_value_error(const Argument_value &value) const = 0;
private:
std::unique_ptr<Validator> m_validator;
};
} // namespace xcl
#endif // PLUGIN_X_CLIENT_VALIDATOR_DESCRIPTOR_H_