Java tutorial
/* * Copyright 2016 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 example.springdata.mongodb.querybyexample; import static org.hamcrest.CoreMatchers.*; import static org.junit.Assert.*; import static org.springframework.data.domain.ExampleMatcher.*; import static org.springframework.data.domain.ExampleMatcher.GenericPropertyMatchers.*; import static org.springframework.data.domain.ExampleMatcher.GenericPropertyMatchers.startsWith; import org.junit.Before; import org.junit.Test; import org.junit.runner.RunWith; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; import org.springframework.data.domain.Example; import org.springframework.data.domain.ExampleMatcher.StringMatcher; import org.springframework.test.context.junit4.SpringRunner; /** * Integration test showing the usage of MongoDB Query-by-Example support through Spring Data repositories. * * @author Mark Paluch * @author Oliver Gierke */ @SuppressWarnings("unused") @RunWith(SpringRunner.class) @SpringBootTest public class UserRepositoryIntegrationTests { @Autowired UserRepository repository; Person skyler, walter, flynn, marie, hank; @Before public void setUp() { repository.deleteAll(); this.skyler = repository.save(new Person("Skyler", "White", 45)); this.walter = repository.save(new Person("Walter", "White", 50)); this.flynn = repository.save(new Person("Walter Jr. (Flynn)", "White", 17)); this.marie = repository.save(new Person("Marie", "Schrader", 38)); this.hank = repository.save(new Person("Hank", "Schrader", 43)); } /** * @see #153 */ @Test public void countBySimpleExample() { Example<Person> example = Example.of(new Person(null, "White", null)); assertThat(repository.count(example), is(3L)); } /** * @see #153 */ @Test public void ignorePropertiesAndMatchByAge() { Example<Person> example = Example.of(flynn, matching(). // withIgnorePaths("firstname", "lastname")); assertThat(repository.findOne(example), is(flynn)); } /** * @see #153 */ @Test public void substringMatching() { Example<Person> example = Example.of(new Person("er", null, null), matching().// withStringMatcher(StringMatcher.ENDING)); assertThat(repository.findAll(example), hasItems(skyler, walter)); } /** * @see #153 */ @Test public void regexMatching() { Example<Person> example = Example.of(new Person("(Skyl|Walt)er", null, null), matching().// withMatcher("firstname", matcher -> matcher.regex())); assertThat(repository.findAll(example), hasItems(skyler, walter)); } /** * @see #153 */ @Test public void matchStartingStringsIgnoreCase() { Example<Person> example = Example.of(new Person("Walter", "WHITE", null), matching().// withIgnorePaths("age").// withMatcher("firstname", startsWith()).// withMatcher("lastname", ignoreCase())); assertThat(repository.findAll(example), hasItems(flynn, walter)); } /** * @see #153 */ @Test public void configuringMatchersUsingLambdas() { Example<Person> example = Example.of(new Person("Walter", "WHITE", null), matching().// withIgnorePaths("age").// withMatcher("firstname", matcher -> matcher.startsWith()).// withMatcher("lastname", matcher -> matcher.ignoreCase())); assertThat(repository.findAll(example), hasItems(flynn, walter)); } /** * @see #153 */ @Test public void valueTransformer() { Example<Person> example = Example.of(new Person(null, "White", 99), matching(). // withMatcher("age", matcher -> matcher.transform(value -> Integer.valueOf(50)))); assertThat(repository.findAll(example), hasItems(walter)); } }