/*
* Copyright 2015, The Querydsl Team (http://www.querydsl.com/team)
*
* 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.querydsl.collections;
import static org.junit.Assert.assertEquals;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.junit.Test;
import org.junit.experimental.categories.Category;
import com.querydsl.core.DefaultQueryMetadata;
import com.querydsl.core.QueryMetadata;
import com.querydsl.core.testutil.Performance;
@Category(Performance.class)
public class LoadTest {
private QCat cat = QCat.cat;
private DefaultEvaluatorFactory evaluatorFactory = new DefaultEvaluatorFactory(CollQueryTemplates.DEFAULT);
private QueryMetadata metadata = new DefaultQueryMetadata();
@Test
public void creation() {
System.out.println("Evaluator creation #1");
for (int i = 0; i < 5; i++) {
long s = System.currentTimeMillis();
evaluatorFactory.create(metadata, Collections.singletonList(cat), cat.name.startsWith("Bob"));
long e = System.currentTimeMillis();
System.out.println(" " + (e - s) + "ms");
}
System.out.println();
System.out.println("Evaluator creation #2");
for (int i = 0; i < 5; i++) {
long s = System.currentTimeMillis();
evaluatorFactory.create(metadata, Collections.singletonList(cat), cat.name.startsWith("Bob" + i));
long e = System.currentTimeMillis();
System.out.println(" " + (e - s) + "ms");
}
System.out.println();
}
@Test
public void test() {
List<Cat> data = new ArrayList<Cat>(5000);
for (int i = 0; i < 1000; i++) {
data.addAll(Arrays.asList(
new Cat("Bob" + i),
new Cat("Ruth" + i),
new Cat("Felix" + i),
new Cat("Allen" + i),
new Cat("Mary" + i)
));
}
// #1
System.out.println("Querydsl iteration");
for (int i = 0; i < 5; i++) {
long s1 = System.currentTimeMillis();
List<Cat> bobs1 = CollQueryFactory.from(cat, data).where(cat.name.startsWith("Bob")).fetch();
assertEquals(1000, bobs1.size());
long e1 = System.currentTimeMillis();
System.out.println(" " + (e1 - s1) + "ms");
}
System.out.println();
// #2
System.out.println("Normal iteration");
for (int i = 0; i < 5; i++) {
long s2 = System.currentTimeMillis();
List<Cat> bobs2 = new ArrayList<Cat>();
for (Cat c : data) {
if (c.getName().startsWith("Bob")) {
bobs2.add(c);
}
}
assertEquals(1000, bobs2.size());
long e2 = System.currentTimeMillis();
System.out.println(" " + (e2 - s2) + "ms");
}
System.out.println();
}
}