Merge branch 'master' of https://github.com/eugenp/tutorials into BAEL-10897

2019-03-29 00:08:00 +05:30
parent 3e926d56be 580ed9f626
commit 0b7d4a4d64
154 changed files with 2937 additions and 186 deletions
@@ -7,3 +7,4 @@
 - [Batch Processing in JDBC](http://www.baeldung.com/jdbc-batch-processing)
 - [Introduction to the JDBC RowSet Interface in Java](http://www.baeldung.com/java-jdbc-rowset)
 - [A Simple Guide to Connection Pooling in Java](https://www.baeldung.com/java-connection-pooling)
+- [Guide to the JDBC ResultSet Interface](https://www.baeldung.com/jdbc-resultset)
@@ -6,3 +6,4 @@
 - [JPA Entity Graph](https://www.baeldung.com/jpa-entity-graph)
 - [JPA 2.2 Support for Java 8 Date/Time Types](https://www.baeldung.com/jpa-java-time)
 - [Converting Between LocalDate and SQL Date](https://www.baeldung.com/java-convert-localdate-sql-date)
+- [Combining JPA And/Or Criteria Predicates](https://www.baeldung.com/jpa-and-or-criteria-predicates)
@@ -1,3 +1,4 @@
 # Relevant Articles

 - [Auto-Generated Field for MongoDB using Spring Boot](https://www.baeldung.com/spring-boot-mongodb-auto-generated-field)
+- [Spring Boot Integration Testing with Embedded MongoDB](http://www.baeldung.com/spring-boot-embedded-mongodb)
@@ -25,6 +25,11 @@
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-mongodb</artifactId>
        </dependency>
+        <dependency>
+            <groupId>de.flapdoodle.embed</groupId>
+            <artifactId>de.flapdoodle.embed.mongo</artifactId>
+            <scope>test</scope>
+        </dependency>
        <!-- JUnit Jupiter dependencies -->
        <dependency>
            <groupId>org.junit.jupiter</groupId>
@@ -102,4 +107,4 @@
    </profiles>


-</project>
+</project>
@@ -0,0 +1,63 @@
+package com.baeldung.mongodb;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.AfterEach;
+import org.junit.jupiter.api.BeforeEach;
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.util.SocketUtils;
+
+import com.mongodb.BasicDBObjectBuilder;
+import com.mongodb.DBObject;
+import com.mongodb.MongoClient;
+
+import de.flapdoodle.embed.mongo.MongodExecutable;
+import de.flapdoodle.embed.mongo.MongodStarter;
+import de.flapdoodle.embed.mongo.config.IMongodConfig;
+import de.flapdoodle.embed.mongo.config.MongodConfigBuilder;
+import de.flapdoodle.embed.mongo.config.Net;
+import de.flapdoodle.embed.mongo.distribution.Version;
+import de.flapdoodle.embed.process.runtime.Network;
+
+class ManualEmbeddedMongoDbIntegrationTest {
+    private MongodExecutable mongodExecutable;
+    private MongoTemplate mongoTemplate;
+
+    @AfterEach
+    void clean() {
+        mongodExecutable.stop();
+    }
+
+    @BeforeEach
+    void setup() throws Exception {
+        String ip = "localhost";
+        int randomPort = SocketUtils.findAvailableTcpPort();
+
+        IMongodConfig mongodConfig = new MongodConfigBuilder().version(Version.Main.PRODUCTION)
+            .net(new Net(ip, randomPort, Network.localhostIsIPv6()))
+            .build();
+
+        MongodStarter starter = MongodStarter.getDefaultInstance();
+        mongodExecutable = starter.prepare(mongodConfig);
+        mongodExecutable.start();
+        mongoTemplate = new MongoTemplate(new MongoClient(ip, randomPort), "test");
+    }
+
+    @DisplayName("Given object When save object using MongoDB template Then object can be found")
+    @Test
+    void test() throws Exception {
+        // given
+        DBObject objectToSave = BasicDBObjectBuilder.start()
+            .add("key", "value")
+            .get();
+
+        // when
+        mongoTemplate.save(objectToSave, "collection");
+
+        // then
+        assertThat(mongoTemplate.findAll(DBObject.class, "collection")).extracting("key")
+            .containsOnly("value");
+    }
+}
@@ -0,0 +1,37 @@
+package com.baeldung.mongodb;
+
+import static org.assertj.core.api.Assertions.assertThat;
+
+import org.junit.jupiter.api.DisplayName;
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.test.autoconfigure.data.mongo.DataMongoTest;
+import org.springframework.data.mongodb.core.MongoTemplate;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit.jupiter.SpringExtension;
+
+import com.baeldung.SpringBootPersistenceApplication;
+import com.mongodb.BasicDBObjectBuilder;
+import com.mongodb.DBObject;
+
+@ContextConfiguration(classes = SpringBootPersistenceApplication.class)
+@DataMongoTest
+@ExtendWith(SpringExtension.class)
+public class MongoDbSpringIntegrationTest {
+    @DisplayName("Given object When save object using MongoDB template Then object can be found")
+    @Test
+    public void test(@Autowired MongoTemplate mongoTemplate) {
+        // given
+        DBObject objectToSave = BasicDBObjectBuilder.start()
+            .add("key", "value")
+            .get();
+
+        // when
+        mongoTemplate.save(objectToSave, "collection");
+
+        // then
+        assertThat(mongoTemplate.findAll(DBObject.class, "collection")).extracting("key")
+            .containsOnly("value");
+    }
+}
@@ -0,0 +1,48 @@
+package com.baeldung.exists;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.Id;
+
+/**
+ * @author paullatzelsperger
+ * @since 2019-03-20
+ */
+@Entity
+public class Car {
+
+    @Id
+    @GeneratedValue
+    private int id;
+    private Integer power;
+    private String model;
+
+    Car() {
+
+    }
+
+    public Car(int power, String model) {
+        this.power = power;
+        this.model = model;
+    }
+
+    public Integer getPower() {
+        return power;
+    }
+
+    public void setPower(Integer power) {
+        this.power = power;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public int getId() {
+        return id;
+    }
+}
@@ -0,0 +1,24 @@
+package com.baeldung.exists;
+
+import org.springframework.data.jpa.repository.JpaRepository;
+import org.springframework.data.jpa.repository.Query;
+import org.springframework.data.repository.query.Param;
+import org.springframework.stereotype.Repository;
+
+/**
+ * @author paullatzelsperger
+ * @since 2019-03-20
+ */
+@Repository
+public interface CarRepository extends JpaRepository<Car, Integer> {
+
+    boolean existsCarByPower(int power);
+
+    boolean existsCarByModel(String model);
+
+    @Query("select case when count(c)> 0 then true else false end from Car c where c.model = :model")
+    boolean existsCarExactCustomQuery(@Param("model") String model);
+
+    @Query("select case when count(c)> 0 then true else false end from Car c where lower(c.model) like lower(:model)")
+    boolean existsCarLikeCustomQuery(@Param("model") String model);
+}
@@ -0,0 +1,86 @@
+package com.baeldung.exists;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.springframework.data.domain.ExampleMatcher.GenericPropertyMatchers.ignoreCase;
+
+import org.junit.After;
+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;
+import org.springframework.test.context.junit4.SpringRunner;
+
+import java.util.Arrays;
+import java.util.List;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+public class CarRepositoryIntegrationTest {
+
+    @Autowired
+    private CarRepository repository;
+    private int searchId;
+
+    @Before
+    public void setup() {
+        List<Car> cars = repository.saveAll(Arrays.asList(new Car(200, "BMW"), new Car(300, "Audi")));
+        searchId = cars.get(0).getId();
+    }
+
+    @After
+    public void teardown() {
+        repository.deleteAll();
+    }
+
+    @Test
+    public void whenIdIsCorrect_thenExistsShouldReturnTrue() {
+        assertThat(repository.existsById(searchId)).isTrue();
+    }
+
+    @Test
+    public void givenExample_whenExists_thenIsTrue() {
+        ExampleMatcher modelMatcher = ExampleMatcher.matching()
+                .withIgnorePaths("id") // must explicitly ignore -> PK
+                .withMatcher("model", ignoreCase());
+        Car probe = new Car();
+        probe.setModel("bmw");
+
+        Example<Car> example = Example.of(probe, modelMatcher);
+
+        assertThat(repository.exists(example)).isTrue();
+    }
+
+    @Test
+    public void givenPower_whenExists_thenIsFalse() {
+        assertThat(repository.existsCarByPower(200)).isTrue();
+        assertThat(repository.existsCarByPower(800)).isFalse();
+    }
+
+    @Test
+    public void existsByDerivedQuery_byModel() {
+        assertThat(repository.existsCarByModel("Audi")).isTrue();
+        assertThat(repository.existsCarByModel("audi")).isFalse();
+        assertThat(repository.existsCarByModel("AUDI")).isFalse();
+        assertThat(repository.existsCarByModel("")).isFalse();
+    }
+
+    @Test
+    public void givenModelName_whenExistsExact_thenIsTrue() {
+        assertThat(repository.existsCarExactCustomQuery("BMW")).isTrue();
+        assertThat(repository.existsCarExactCustomQuery("Bmw")).isFalse();
+        assertThat(repository.existsCarExactCustomQuery("bmw")).isFalse();
+        assertThat(repository.existsCarExactCustomQuery("")).isFalse();
+    }
+
+    @Test
+    public void givenModelName_whenExistsLike_thenIsTrue() {
+        assertThat(repository.existsCarLikeCustomQuery("BMW")).isTrue();
+        assertThat(repository.existsCarLikeCustomQuery("Bmw")).isTrue();
+        assertThat(repository.existsCarLikeCustomQuery("bmw")).isTrue();
+        assertThat(repository.existsCarLikeCustomQuery("")).isFalse();
+    }
+
+}
@@ -22,6 +22,7 @@
 - [Spring Data JPA Query by Example](https://www.baeldung.com/spring-data-query-by-example)
 - [DB Integration Tests with Spring Boot and Testcontainers](https://www.baeldung.com/spring-boot-testcontainers-integration-test)
 - [Spring Data JPA @Modifying Annotation](https://www.baeldung.com/spring-data-jpa-modifying-annotation)
+- [Spring Data JPA Batch Inserts](https://www.baeldung.com/spring-data-jpa-batch-inserts)

 ### Eclipse Config 
 After importing the project into Eclipse, you may see the following error:  
@@ -53,6 +53,15 @@
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+        <dependency>
+        <groupId>org.springframework.boot</groupId>
+           <artifactId>spring-boot-starter-test</artifactId>
+           <scope>test</scope>
+        </dependency>

        <dependency>
            <groupId>com.google.guava</groupId>
@@ -0,0 +1,43 @@
+package com.baeldung.batchinserts;
+
+import java.net.URISyntaxException;
+import java.util.Arrays;
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.http.ResponseEntity;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+import com.baeldung.batchinserts.model.Customer;
+import com.baeldung.batchinserts.repository.CustomerRepository;
+
+/**
+ * A simple controller to test the JPA CrudRepository operations
+ * controllers
+ * 
+ * @author ysharma2512
+ *
+ */
+@RestController
+public class CustomerController {
+
+    @Autowired
+    CustomerRepository customerRepository;
+
+    public CustomerController(CustomerRepository customerRepository2) {
+        this.customerRepository = customerRepository2;
+    }
+
+    @PostMapping("/customers")
+    public ResponseEntity<List<Customer>> insertCustomers() throws URISyntaxException {
+        Customer c1 = new Customer("James", "Gosling");
+        Customer c2 = new Customer("Doug", "Lea");
+        Customer c3 = new Customer("Martin", "Fowler");
+        Customer c4 = new Customer("Brian", "Goetz");
+        List<Customer> customers = Arrays.asList(c1, c2, c3, c4);
+        customerRepository.saveAll(customers);
+        return ResponseEntity.ok(customers);
+    }
+
+}
@@ -0,0 +1,56 @@
+package com.baeldung.batchinserts.model;
+
+import javax.persistence.Entity;
+import javax.persistence.GeneratedValue;
+import javax.persistence.GenerationType;
+import javax.persistence.Id;
+
+/**
+ * Customer Entity class
+ * @author ysharma2512
+ *
+ */
+@Entity
+public class Customer {
+
+    @Id
+    @GeneratedValue(strategy = GenerationType.AUTO)
+    private Long id;
+    private String firstName;
+    private String lastName;
+
+    public Customer(String firstName, String lastName) {
+        this.firstName = firstName;
+        this.lastName = lastName;
+    }
+
+    public Long getId() {
+        return id;
+    }
+
+    public void setId(Long id) {
+        this.id = id;
+    }
+
+    public String getFirstName() {
+        return firstName;
+    }
+
+    public void setFirstName(String firstName) {
+        this.firstName = firstName;
+    }
+
+    public String getLastName() {
+        return lastName;
+    }
+
+    public void setLastName(String lastName) {
+        this.lastName = lastName;
+    }
+
+    @Override
+    public String toString() {
+        return String.format("Customer[id=%d, firstName='%s', lastName='%s']", id, firstName, lastName);
+    }
+
+}
@@ -0,0 +1,15 @@
+package com.baeldung.batchinserts.repository;
+
+import org.springframework.data.repository.CrudRepository;
+
+import com.baeldung.batchinserts.model.Customer;
+
+/**
+ * JPA CrudRepository interface
+ * 
+ * @author ysharma2512
+ *
+ */
+public interface CustomerRepository extends CrudRepository<Customer, Long>{
+
+}
@@ -14,4 +14,9 @@ hibernate.cache.region.factory_class=org.hibernate.cache.ehcache.EhCacheRegionFa

 spring.datasource.data=import_entities.sql

-spring.main.allow-bean-definition-overriding=true
+spring.main.allow-bean-definition-overriding=true
+
+spring.jpa.properties.hibernate.jdbc.batch_size=4
+spring.jpa.properties.hibernate.order_inserts=true
+spring.jpa.properties.hibernate.order_updates=true
+spring.jpa.properties.hibernate.generate_statistics=true
@@ -0,0 +1,44 @@
+package com.baeldung.batchinserts;
+
+import static org.springframework.test.web.servlet.request.MockMvcRequestBuilders.post;
+import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.status;
+
+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.autoconfigure.web.servlet.AutoConfigureMockMvc;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringRunner;
+import org.springframework.test.web.servlet.MockMvc;
+import org.springframework.test.web.servlet.setup.MockMvcBuilders;
+
+import com.baeldung.batchinserts.CustomerController;
+import com.baeldung.batchinserts.repository.CustomerRepository;
+import com.baeldung.config.PersistenceConfiguration;
+import com.baeldung.config.PersistenceProductConfiguration;
+import com.baeldung.config.PersistenceUserConfiguration;
+
+@RunWith(SpringRunner.class)
+@SpringBootTest
+@AutoConfigureMockMvc
+@ContextConfiguration(classes = { PersistenceConfiguration.class, PersistenceProductConfiguration.class, PersistenceUserConfiguration.class })
+public class BatchInsertIntegrationTest {
+
+    @Autowired
+    private CustomerRepository customerRepository;
+    private MockMvc mockMvc;
+    @Before
+    public void setUp() throws Exception {
+        mockMvc = MockMvcBuilders.standaloneSetup( new CustomerController(customerRepository))
+            .build();
+    }
+
+    @Test
+    public void whenInsertingCustomers_thenCustomersAreCreated() throws Exception {
+        this.mockMvc.perform(post("/customers"))
+            .andExpect(status().isOk());
+    }    
+   
+}