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// Copyright (c) 2012 The Chromium OS Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
#ifndef SHILL_KEY_VALUE_STORE_
#define SHILL_KEY_VALUE_STORE_
#include <map>
#include <string>
#include <base/basictypes.h>
namespace shill {
class KeyValueStore {
// A simple store for key-value pairs, which supports (a limited set of)
// heterogenous value types.
//
// Compare to PropertyStore, which enables a class to (selectively)
// expose its instance members as properties accessible via
// RPC. (RPC support for ProperyStore is implemented in a
// protocol-specific adaptor. e.g. dbus_adpator.)
//
// Implemented separately from PropertyStore, to avoid complicating
// the PropertyStore interface. In particular, objects implementing the
// PropertyStore interface always provide the storage themselves. In
// contrast, users of KeyValueStore expect KeyValueStore to provide
// storage.
public:
KeyValueStore();
void Clear();
bool ContainsBool(const std::string &name) const;
bool ContainsInt(const std::string &name) const;
bool ContainsString(const std::string &name) const;
bool ContainsUint(const std::string &name) const;
bool GetBool(const std::string &name) const;
int32 GetInt(const std::string &name) const;
const std::string &GetString(const std::string &name) const;
uint32 GetUint(const std::string &name) const;
void SetBool(const std::string &name, bool value);
void SetInt(const std::string &name, int32 value);
void SetString(const std::string& name, const std::string& value);
void SetUint(const std::string &name, uint32 value);
void RemoveString(const std::string &name);
void RemoveInt(const std::string &name);
// If |name| is in this store returns its value, otherwise returns
// |default_value|.
bool LookupBool(const std::string &name, bool default_value) const;
std::string LookupString(const std::string &name,
const std::string &default_value) const;
const std::map<std::string, bool> &bool_properties() const {
return bool_properties_;
}
const std::map<std::string, int32> &int_properties() const {
return int_properties_;
}
const std::map<std::string, std::string> &string_properties() const {
return string_properties_;
}
const std::map<std::string, uint32> &uint_properties() const {
return uint_properties_;
}
private:
std::map<std::string, bool> bool_properties_;
std::map<std::string, int32> int_properties_;
std::map<std::string, std::string> string_properties_;
std::map<std::string, uint32> uint_properties_;
};
} // namespace shill
#endif // SHILL_KEY_VALUE_STORE_