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/*
Author: Juan Rada-Vilela, Ph.D.
Copyright (C) 2010-2014 FuzzyLite Limited
All rights reserved
This file is part of fuzzylite.
fuzzylite is free software: you can redistribute it and/or modify it under
the terms of the GNU Lesser General Public License as published by the Free
Software Foundation, either version 3 of the License, or (at your option)
any later version.
fuzzylite 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 Lesser General Public License
for more details.
You should have received a copy of the GNU Lesser General Public License
along with fuzzylite. If not, see <http://www.gnu.org/licenses/>.
fuzzylite™ is a trademark of FuzzyLite Limited.
*/
#include "fl/rule/RuleBlock.h"
#include "fl/imex/FllExporter.h"
#include "fl/norm/TNorm.h"
#include "fl/norm/SNorm.h"
#include "fl/rule/Rule.h"
#include <sstream>
namespace fl {
RuleBlock::RuleBlock(const std::string& name)
: _name(name), _enabled(true) {
}
RuleBlock::RuleBlock(const RuleBlock& other) : _name(other._name),
_enabled(true) {
copyFrom(other);
}
RuleBlock& RuleBlock::operator=(const RuleBlock& other) {
if (this != &other) {
for (std::size_t i = 0; i < _rules.size(); ++i) {
delete _rules.at(i);
}
_rules.clear();
_conjunction.reset(fl::null);
_disjunction.reset(fl::null);
_activation.reset(fl::null);
copyFrom(other);
}
return *this;
}
void RuleBlock::copyFrom(const RuleBlock& source) {
_name = source._name;
_enabled = source._enabled;
if (source._activation.get()) _activation.reset(source._activation->clone());
if (source._conjunction.get()) _conjunction.reset(source._conjunction->clone());
if (source._disjunction.get()) _disjunction.reset(source._disjunction->clone());
for (std::size_t i = 0; i < source._rules.size(); ++i) {
_rules.push_back(source._rules.at(i)->clone());
}
}
RuleBlock::~RuleBlock() {
for (std::size_t i = 0; i < _rules.size(); ++i) {
delete _rules.at(i);
}
_rules.clear();
}
void RuleBlock::activate() {
FL_DBG("===================");
FL_DBG("ACTIVATING RULEBLOCK " << _name);
for (std::size_t i = 0; i < _rules.size(); ++i) {
Rule* rule = _rules.at(i);
if (rule->isLoaded()) {
scalar activationDegree = rule->activationDegree(_conjunction.get(), _disjunction.get());
FL_DBG("[degree=" << Op::str(activationDegree) << "] " << rule->toString());
if (Op::isGt(activationDegree, 0.0)) {
rule->activate(activationDegree, _activation.get());
}
} else {
FL_DBG("Rule not loaded: " << rule->toString());
}
}
}
void RuleBlock::unloadRules() const {
for (std::size_t i = 0; i < _rules.size(); ++i) {
_rules.at(i)->unload();
}
}
void RuleBlock::loadRules(const Engine* engine) {
std::ostringstream exceptions;
bool throwException = false;
for (std::size_t i = 0; i < _rules.size(); ++i) {
Rule* rule = _rules.at(i);
if (rule->isLoaded()) {
rule->unload();
}
try {
rule->load(engine);
} catch (std::exception& ex) {
throwException = true;
exceptions << ex.what() << "\n";
}
}
if (throwException) {
fl::Exception exception("[ruleblock error] the following "
"rules could not be loaded:\n" + exceptions.str(), FL_AT);
throw exception;
}
}
void RuleBlock::reloadRules(const Engine* engine) {
unloadRules();
loadRules(engine);
}
void RuleBlock::setName(std::string name) {
this->_name = name;
}
std::string RuleBlock::getName() const {
return this->_name;
}
void RuleBlock::setConjunction(TNorm* tnorm) {
this->_conjunction.reset(tnorm);
}
TNorm* RuleBlock::getConjunction() const {
return this->_conjunction.get();
}
void RuleBlock::setDisjunction(SNorm* snorm) {
this->_disjunction.reset(snorm);
}
SNorm* RuleBlock::getDisjunction() const {
return this->_disjunction.get();
}
void RuleBlock::setActivation(TNorm* activation) {
this->_activation.reset(activation);
}
TNorm* RuleBlock::getActivation() const {
return this->_activation.get();
}
void RuleBlock::setEnabled(bool enabled) {
this->_enabled = enabled;
}
bool RuleBlock::isEnabled() const {
return this->_enabled;
}
std::string RuleBlock::toString() const {
return FllExporter().toString(this);
}
/**
* Operations for std::vector _rules
*/
void RuleBlock::addRule(Rule* rule) {
this->_rules.push_back(rule);
}
void RuleBlock::insertRule(Rule* rule, int index) {
this->_rules.insert(this->_rules.begin() + index, rule);
}
Rule* RuleBlock::getRule(int index) const {
return this->_rules.at(index);
}
Rule* RuleBlock::removeRule(int index) {
Rule* result = this->_rules.at(index);
this->_rules.erase(this->_rules.begin() + index);
return result;
}
int RuleBlock::numberOfRules() const {
return this->_rules.size();
}
const std::vector<Rule*>& RuleBlock::rules() const {
return this->_rules;
}
void RuleBlock::setRules(const std::vector<Rule*>& rules) {
this->_rules = rules;
}
std::vector<Rule*>& RuleBlock::rules() {
return this->_rules;
}
}
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