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/*
* Copyright (C) 2015, 2016 "IoT.bzh"
* Author "Romain Forlot" <romain.forlot@iot.bzh>
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#pragma once
#include <map>
#include <string>
#include <vector>
#include <ctl-config.h>
class bindingApp;
class Signal
{
private:
std::string id_;
std::vector<std::string> signalSigList_;
long long int timestamp_;
double value_;
std::map<long long int, double> history_; ///< history_ - Hold signal value history in map with <timestamp, value>
double frequency_;
std::string unit_;
CtlActionT* onReceived_;
std::vector<Signal*> Observers_;
void attach(Signal *obs);
int recursionCheck(const std::string& origId);
public:
Signal(const std::string& id, std::vector<std::string>& sources, const std::string& unit, double frequency, CtlActionT* onReceived);
explicit operator bool() const;
bool operator==(const Signal& other) const;
bool operator==(const std::string& aName) const;
const std::string id() const;
json_object* toJSON() const;
void update(long long int timestamp, double value);
int onReceivedCB(json_object *queryJ);
void attachToSourceSignals(bindingApp& bApp);
void notify();
//virtual double average() const;
//virtual double min() const;
//virtual double max() const;
//double lastValue() const;
int recursionCheck();
};
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