package org.drools.compiler.integrationtests.manners;
import org.kie.api.io.ResourceType;
import org.kie.api.runtime.KieSession;
import org.kie.internal.KnowledgeBase;
import org.kie.internal.KnowledgeBaseFactory;
import org.kie.internal.builder.KnowledgeBuilder;
import org.kie.internal.builder.KnowledgeBuilderFactory;
import org.kie.internal.io.ResourceFactory;
import java.io.*;
import java.util.*;
public class MannersBenchmark {
/**
* Number of guests at the dinner (default: 16).
*/
private int numGuests = 16;
/**
* Number of seats at the table (default: 16).
*/
private int numSeats = 16;
/**
* Minimum number of hobbies each guest should have (defaJavaCompilerFactoryult: 2).
*/
private int minHobbies = 2;
/**
* Maximun number of hobbies each guest should have (default: 3).
*/
private int maxHobbies = 3;
public static void main(final String[] args) throws Exception {
KnowledgeBuilder kbuilder = KnowledgeBuilderFactory.newKnowledgeBuilder();
kbuilder.add(ResourceFactory.newInputStreamResource(MannersBenchmark.class.getResourceAsStream("manners.drl")), ResourceType.DRL);
KnowledgeBase kbase = KnowledgeBaseFactory.newKnowledgeBase();
kbase.addKnowledgePackages(kbuilder.getKnowledgePackages());
String filename;
if (args.length != 0) {
String arg = args[0];
filename = arg;
} else {
filename = "manners5.dat";
}
for (int i = 0; i < 3; ++i) {
InputStream is = MannersBenchmark.class.getResourceAsStream(filename);
List list = getInputObjects(is);
KieSession session = kbase.newStatefulKnowledgeSession();
for (Iterator it = list.iterator(); it.hasNext();) {
Object object = it.next();
session.insert(object);
}
session.insert(new Count(1));
long start = System.currentTimeMillis();
session.fireAllRules();
System.err.println(System.currentTimeMillis() - start);
session.dispose();
}
}
/**
* Convert the facts from the <code>InputStream</code> to a list of
* objects.
*/
protected static List getInputObjects(InputStream inputStream) throws IOException {
List list = new ArrayList();
BufferedReader br = new BufferedReader(new InputStreamReader(inputStream));
String line;
while ((line = br.readLine()) != null) {
if (line.trim().length() == 0 || line.trim().startsWith(";")) {
continue;
}
StringTokenizer st = new StringTokenizer(line,
"() ");
String type = st.nextToken();
if ("guest".equals(type)) {
if (!"name".equals(st.nextToken())) {
throw new IOException("expected 'name' in: " + line);
}
String name = st.nextToken();
if (!"sex".equals(st.nextToken())) {
throw new IOException("expected 'sex' in: " + line);
}
String sex = st.nextToken();
if (!"hobby".equals(st.nextToken())) {
throw new IOException("expected 'hobby' in: " + line);
}
String hobby = st.nextToken();
Guest guest = new Guest(name,
Sex.resolve(sex),
Hobby.resolve(hobby));
list.add(guest);
}
if ("last_seat".equals(type)) {
if (!"seat".equals(st.nextToken())) {
throw new IOException("expected 'seat' in: " + line);
}
list.add(new LastSeat(new Integer(st.nextToken()).intValue()));
}
if ("context".equals(type)) {
if (!"state".equals(st.nextToken())) {
throw new IOException("expected 'state' in: " + line);
}
list.add(new Context(st.nextToken()));
}
}
inputStream.close();
return list;
}
private InputStream generateData() {
final String LINE_SEPARATOR = System.getProperty("line.separator");
StringWriter writer = new StringWriter();
int maxMale = numGuests / 2;
int maxFemale = numGuests / 2;
int maleCount = 0;
int femaleCount = 0;
// init hobbies
List hobbyList = new ArrayList();
for (int i = 1; i <= maxHobbies; i++) {
hobbyList.add("h" + i);
}
Random rnd = new Random();
for (int i = 1; i <= numGuests; i++) {
char sex = rnd.nextBoolean() ? 'm' : 'f';
if (sex == 'm' && maleCount == maxMale) {
sex = 'f';
}
if (sex == 'f' && femaleCount == maxFemale) {
sex = 'm';
}
if (sex == 'm') {
maleCount++;
}
if (sex == 'f') {
femaleCount++;
}
List guestHobbies = new ArrayList(hobbyList);
int numHobbies = minHobbies + rnd.nextInt(maxHobbies - minHobbies + 1);
for (int j = 0; j < numHobbies; j++) {
int hobbyIndex = rnd.nextInt(guestHobbies.size());
String hobby = (String) guestHobbies.get(hobbyIndex);
writer.write("(guest (name n" + i + ") (sex " + sex + ") (hobby " + hobby + "))" + LINE_SEPARATOR);
guestHobbies.remove(hobbyIndex);
}
}
writer.write("(last_seat (seat " + numSeats + "))" + LINE_SEPARATOR);
writer.write(LINE_SEPARATOR);
writer.write("(context (state start))" + LINE_SEPARATOR);
return new ByteArrayInputStream(writer.getBuffer().toString().getBytes());
}
}