//Drools file

package com.sample;

import org.kie.api.KieServices;
import org.kie.api.runtime.KieContainer;
import org.kie.api.runtime.KieSession;

/**
 * This is a sample class to launch a rule.
 */
public class DroolsTest {

    public static final void main(String[] args) {
        try {
            // load up the knowledge base
	        KieServices ks = KieServices.Factory.get();
    	    KieContainer kContainer = ks.getKieClasspathContainer();
        	KieSession kSession = kContainer.newKieSession("ksession-rules");

            // Kreiranje novog objekta i unos cinjenica
        	KlimaUredjaj k = new KlimaUredjaj();
        	k.setKvadratura(62);
        	k.setBrojProstorija("vise");
        	k.setRadNaNiskimTemperaturama(true);
            k.setMogucaUgradnjaNaZid(false);
        	
        	//Unosenje objekta u ES
            kSession.insert(k);
            
            //Pokretanje ES
            kSession.fireAllRules();
            
            //Ispis resenja
            System.out.println(k);
        } catch (Throwable t) {
            t.printStackTrace();
        }
    }

}

_________________________________________________________________________________________________________________________

//Klasa koja se pravi u skladu sa zadatkom

package com.sample;

public class KlimaUredjaj {
	
	//Pravila 9 i 10 navode da je preporuceni tip "zidna" klima, osim u 
	//nekim slucajevima pa se to postavlja za pocetnu vrednost atributa tip
	private String tip = "zidna";
	private int snaga;
	private boolean imaInverter;
	
	private int kvadratura;
	private String brojProstorija;
	private boolean mogucaUgradnjaNaZid;
	private boolean podjednakoZaGrejanje;
	private boolean radNaNiskimTemperaturama;
	
	public String getTip() {
		return tip;
	}
	
	public void setTip(String tip) {
		this.tip = tip;
	}
	
	public int getSnaga() {
		return snaga;
	}
	
	public void setSnaga(int snaga) {
		this.snaga = snaga;
	}
	
	public boolean isImaInverter() {
		return imaInverter;
	}
	
	public void setImaInverter(boolean imaInverter) {
		this.imaInverter = imaInverter;
	}
	
	public int getKvadratura() {
		return kvadratura;
	}
	
	public void setKvadratura(int kvadratura) {
		this.kvadratura = kvadratura;
	}
	
	public String getBrojProstorija() {
		return brojProstorija;
	}
	
	public void setBrojProstorija(String brojProstorija) {
		this.brojProstorija = brojProstorija;
	}
	
	public boolean isMogucaUgradnjaNaZid() {
		return mogucaUgradnjaNaZid;
	}
	
	public void setMogucaUgradnjaNaZid(boolean mogucaUgradnjaNaZid) {
		this.mogucaUgradnjaNaZid = mogucaUgradnjaNaZid;
	}
	
	public boolean isPodjednakoZaGrejanje() {
		return podjednakoZaGrejanje;
	}
	
	public void setPodjednakoZaGrejanje(boolean podjednakoZaGrejanje) {
		this.podjednakoZaGrejanje = podjednakoZaGrejanje;
	}
	
	public boolean isRadNaNiskimTemperaturama() {
		return radNaNiskimTemperaturama;
	}
	
	public void setRadNaNiskimTemperaturama(boolean radNaNiskimTemperaturama) {
		this.radNaNiskimTemperaturama = radNaNiskimTemperaturama;
	}

	//Trazi se samo ispis resenja a ne i ulaznih cinjenica, tako da toString vraca
	//tip, snagu i da li ima inverter
	@Override
	public String toString() {
		return "KlimaUredjaj [tip=" + tip + ", snaga=" + snaga + ", imaInverter=" + imaInverter + "]";
	}
	
	

}

__________________________________________________________________________________________________________\

//RULES

package com.sample
 
import com.sample.KlimaUredjaj;
 
rule "Pravilo 4"
    when
        k : KlimaUredjaj( kvadratura <= 50 && brojProstorija == "jedna" && snaga == 0 )
    then
    	k.setSnaga(9000);
        update( k );
end

rule "Pravilo 5"
    when
        k : KlimaUredjaj( kvadratura <= 50 && brojProstorija == "vise" && snaga == 0 )
    then
    	k.setSnaga(12000);
        update( k );
end

rule "Pravilo 6"
    when
        k : KlimaUredjaj( kvadratura > 50 && kvadratura < 75 && brojProstorija == "jedna" && snaga == 0 )
    then
    	k.setSnaga(12000);
        update( k );
end

rule "Pravilo 7"
    when
        k : KlimaUredjaj( kvadratura > 50 && kvadratura < 75 && brojProstorija == "vise" && snaga == 0 )
    then
    	k.setSnaga(18000);
        update( k );
end

rule "Pravilo 8"
    when
        k : KlimaUredjaj( kvadratura >= 75 && snaga == 0 )
    then
    	k.setSnaga(18000);
        update( k );
end

rule "Pravilo 9"
    when
        k : KlimaUredjaj( brojProstorija == "vise" && mogucaUgradnjaNaZid == false && tip == "zidna" )
    then
    	k.setTip("pokretna");
        update( k );
end

rule "Pravilo 10"
    when
        k : KlimaUredjaj( brojProstorija == "jedna" && mogucaUgradnjaNaZid == false && tip == "zidna" )
    then
    	k.setTip("prozorska");
        update( k );
end

rule "Pravilo 11"
    when
        k : KlimaUredjaj( podjednakoZaGrejanje == true && imaInverter == false )
    then
    	k.setImaInverter(true);
        update( k );
end

rule "Pravilo 12"
    when
        k : KlimaUredjaj( radNaNiskimTemperaturama == true && imaInverter == false )
    then
    	k.setImaInverter(true);
        update( k );
end