/*
* Copyright 2013-2014 the original author or authors.
*
* 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 org.springframework.data.jpa.repository;
import static org.hamcrest.CoreMatchers.*;
import static org.junit.Assert.*;
import java.util.List;
import java.util.Set;
import javax.persistence.criteria.CriteriaBuilder;
import javax.persistence.criteria.CriteriaQuery;
import javax.persistence.criteria.Path;
import javax.persistence.criteria.Predicate;
import javax.persistence.criteria.Root;
import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.PageRequest;
import org.springframework.data.domain.Sort;
import org.springframework.data.jpa.domain.Specification;
import org.springframework.data.jpa.domain.sample.Child;
import org.springframework.data.jpa.domain.sample.Parent;
import org.springframework.data.jpa.repository.sample.ParentRepository;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
import org.springframework.transaction.annotation.Transactional;
@Transactional
@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration("classpath:config/namespace-application-context.xml")
public class ParentRepositoryIntegrationTests {
@Autowired ParentRepository repository;
@Before
public void setUp() {
repository.save(new Parent().add(new Child()));
repository.save(new Parent().add(new Child()).add(new Child()));
repository.save(new Parent().add(new Child()));
repository.save(new Parent());
repository.flush();
}
/**
* @see DATAJPA-287
*/
@Test
public void testWithoutJoin() throws Exception {
Page<Parent> page = repository.findAll(new Specification<Parent>() {
public Predicate toPredicate(Root<Parent> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
Path<Set<Child>> childrenPath = root.get("children");
query.distinct(true);
return cb.isNotEmpty(childrenPath);
}
}, new PageRequest(0, 5, new Sort(Sort.Direction.ASC, "id")));
List<Parent> content = page.getContent();
assertThat(content.size(), is(3));
assertThat(page.getSize(), is(5));
assertThat(page.getNumber(), is(0));
assertThat(page.getTotalElements(), is(3L));
assertThat(page.getTotalPages(), is(1));
}
/**
* @see DATAJPA-287
*/
@Test
public void testWithJoin() throws Exception {
Page<Parent> page = repository.findAll(new Specification<Parent>() {
public Predicate toPredicate(Root<Parent> root, CriteriaQuery<?> query, CriteriaBuilder cb) {
root.join("children");
// we are interesting in distinct items, especially when join presents in query
query.distinct(true);
return cb.isNotEmpty(root.<Set<Child>> get("children"));
}
}, new PageRequest(0, 5, new Sort(Sort.Direction.ASC, "id")));
List<Parent> content = page.getContent();
// according to the initial setup there should be
// 3 parents which children collection is not empty
assertThat(content.size(), is(3));
assertThat(page.getSize(), is(5));
assertThat(page.getNumber(), is(0));
// we get here wrong total elements number since
// count query doesn't take into account the distinct marker of query
assertThat(page.getTotalElements(), is(3L));
assertThat(page.getTotalPages(), is(1));
}
}