/**
*
* Copyright (c) 2006-2017, Speedment, Inc. All Rights Reserved.
*
* 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.
*/
package com.speedment.example.basic_example;
import com.company.sakila.SakilaApplication;
import com.company.sakila.db0.sakila.film.Film;
import com.company.sakila.db0.sakila.film.FilmManager;
import com.speedment.oracle_java_magazine.util.ExampleUtil;
import static com.speedment.oracle_java_magazine.util.ExampleUtil.buildApplication;
import java.util.Optional;
/**
*
* @author Per Minborg
*/
public class Optimization {
private final SakilaApplication app;
private final FilmManager films;
public Optimization() {
app = buildApplication();
films = app.getOrThrow(FilmManager.class);
}
public static void main(String[] args) {
new Optimization().run();
}
private void run() {
findALongFilm();
countPg13Films();
understandingOptimization();
}
private void findALongFilm() {
ExampleUtil.log("findALongFilm");
Optional<Film> longFilm = films.stream()
.filter(Film.LENGTH.greaterThan(120))
.findAny();
longFilm.ifPresent(System.out::println);
}
private void countPg13Films() {
ExampleUtil.log("countPg13Films");
long count = films.stream()
.filter(Film.RATING.equal("PG-13"))
.count();
System.out.format(
"There are %d films rated 'PG-13'%n", count
);
}
private void understandingOptimization() {
ExampleUtil.log("understandingOptimization");
long count = films.stream()
.filter(Film.RATING.equal("PG-13"))
.filter(Film.LENGTH.greaterThan(75))
.map(Film::getTitle)
.sorted()
.count();
System.out.format("Found %d films%n", count);
}
}