Annotation Config was added

repository/src/main/java/com/iluwatar/repository/AppConfig.java

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+package com.iluwatar.repository;
+
+import java.sql.SQLException;
+import java.util.List;
+import java.util.Properties;
+
+import javax.sql.DataSource;
+
+import org.apache.commons.dbcp.BasicDataSource;
+import org.hibernate.jpa.HibernatePersistenceProvider;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
+import org.springframework.orm.jpa.JpaTransactionManager;
+import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
+
+/**
+ * Annotations based configuration for Spring
+ *
+ */
+@EnableJpaRepositories
+public class AppConfig {
+
+	/**
+	 * Creation of H2 db
+	 * 
+	 * @return A new Instance of DataSource
+	 */
+	@Bean(destroyMethod = "close")
+	public DataSource dataSource() {
+		BasicDataSource basicDataSource = new BasicDataSource();
+		basicDataSource.setDriverClassName("org.h2.Driver");
+		basicDataSource.setUrl("jdbc:h2:~/databases/person");
+		basicDataSource.setUsername("sa");
+		basicDataSource.setPassword("sa");
+		return (DataSource) basicDataSource;
+	}
+
+	/**
+	 * Factory to create a especific instance of Entity Manager
+	 * @return
+	 */
+	@Bean
+	public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
+		LocalContainerEntityManagerFactoryBean entityManager = new LocalContainerEntityManagerFactoryBean();
+		entityManager.setDataSource(dataSource());
+		entityManager.setPackagesToScan("com.iluwatar");
+		entityManager.setPersistenceProvider(new HibernatePersistenceProvider());
+		entityManager.setJpaProperties(jpaProperties());
+
+		return entityManager;
+	}
+
+	/**
+	 * Properties for Jpa
+	 * @return
+	 */
+	private Properties jpaProperties() {
+		Properties properties = new Properties();
+		properties.setProperty("hibernate.dialect", "org.hibernate.dialect.H2Dialect");
+		properties.setProperty("hibernate.hbm2ddl.auto", "create-drop");
+		return properties;
+	}
+
+    @Bean
+    public JpaTransactionManager transactionManager() throws SQLException {
+        JpaTransactionManager transactionManager = new JpaTransactionManager();
+        transactionManager.setEntityManagerFactory(entityManagerFactory().getObject());
+        return transactionManager;
+    }
+
+	  /**
+	   * Program entry point
+	   * 
+	   * @param args command line args
+	   */
+	  public static void main(String[] args) {
+
+		AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
+	    PersonRepository repository = context.getBean(PersonRepository.class);
+
+	    Person peter = new Person("Peter", "Sagan", 17);
+	    Person nasta = new Person("Nasta", "Kuzminova", 25);
+	    Person john = new Person("John", "lawrence", 35);
+	    Person terry = new Person("Terry", "Law", 36);
+
+	    // Add new Person records
+	    repository.save(peter);
+	    repository.save(nasta);
+	    repository.save(john);
+	    repository.save(terry);
+
+	    // Count Person records
+	    System.out.println("Count Person records: " + repository.count());
+
+	    // Print all records
+	    List<Person> persons = (List<Person>) repository.findAll();
+	    for (Person person : persons) {
+	      System.out.println(person);
+	    }
+
+	    // Update Person
+	    nasta.setName("Barbora");
+	    nasta.setSurname("Spotakova");
+	    repository.save(nasta);
+
+	    System.out.println("Find by id 2: " + repository.findOne(2L));
+
+	    // Remove record from Person
+	    repository.delete(2L);
+
+	    // count records
+	    System.out.println("Count Person records: " + repository.count());
+
+	    // find by name
+	    Person p = repository.findOne(new PersonSpecifications.NameEqualSpec("John"));
+	    System.out.println("Find by John is " + p);
+
+	    // find by age
+	    persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
+
+	    System.out.println("Find Person with age between 20,40: ");
+	    for (Person person : persons) {
+	      System.out.println(person);
+	    }
+
+	    context.close();
+
+	  }
+
+}

repository/src/test/java/com/iluwatar/repository/AnnotationBasedRepositoryTest.java

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+package com.iluwatar.repository;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertNull;
+import static org.junit.Assert.assertTrue;
+
+import java.util.Arrays;
+import java.util.List;
+
+import javax.annotation.Resource;
+
+import org.junit.After;
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+
+import com.google.common.collect.Lists;
+
+/**
+ * Test case to test the functions of {@link PersonRepository}, beside the CRUD functions, the query
+ * by {@link org.springframework.data.jpa.domain.Specification} are also test.
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { AppConfig.class}, loader = AnnotationConfigContextLoader.class)
+public class AnnotationBasedRepositoryTest {
+
+  @Resource
+  private PersonRepository repository;
+
+  Person peter = new Person("Peter", "Sagan", 17);
+  Person nasta = new Person("Nasta", "Kuzminova", 25);
+  Person john = new Person("John", "lawrence", 35);
+  Person terry = new Person("Terry", "Law", 36);
+
+  List<Person> persons = Arrays.asList(peter, nasta, john, terry);
+
+  /**
+   * Prepare data for test
+   */
+  @Before
+  public void setup() {
+
+    repository.save(persons);
+  }
+
+  @Test
+  public void testFindAll() {
+
+    List<Person> actuals = Lists.newArrayList(repository.findAll());
+    assertTrue(actuals.containsAll(persons) && persons.containsAll(actuals));
+  }
+
+  @Test
+  public void testSave() {
+
+    Person terry = repository.findByName("Terry");
+    terry.setSurname("Lee");
+    terry.setAge(47);
+    repository.save(terry);
+
+    terry = repository.findByName("Terry");
+    assertEquals(terry.getSurname(), "Lee");
+    assertEquals(47, terry.getAge());
+  }
+
+  @Test
+  public void testDelete() {
+
+    Person terry = repository.findByName("Terry");
+    repository.delete(terry);
+
+    assertEquals(3, repository.count());
+    assertNull(repository.findByName("Terry"));
+  }
+
+  @Test
+  public void testCount() {
+
+    assertEquals(4, repository.count());
+  }
+
+  @Test
+  public void testFindAllByAgeBetweenSpec() {
+
+    List<Person> persons = repository.findAll(new PersonSpecifications.AgeBetweenSpec(20, 40));
+
+    assertEquals(3, persons.size());
+    assertTrue(persons.stream().allMatch((item) -> {
+      return item.getAge() > 20 && item.getAge() < 40;
+    }));
+  }
+
+  @Test
+  public void testFindOneByNameEqualSpec() {
+
+    Person actual = repository.findOne(new PersonSpecifications.NameEqualSpec("Terry"));
+    assertEquals(terry, actual);
+  }
+
+  @After
+  public void cleanup() {
+
+    repository.deleteAll();
+  }
+
+}
+

repository/src/test/java/com/iluwatar/repository/AppConfigTest.java

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+package com.iluwatar.repository;
+
+import static org.junit.Assert.*;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+
+import javax.sql.DataSource;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+import org.springframework.test.context.support.AnnotationConfigContextLoader;
+import org.springframework.transaction.annotation.Transactional;
+
+/**
+ * This case is Just for test the Annotation Based configuration
+ * 
+ */
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(classes = { AppConfig.class}, loader = AnnotationConfigContextLoader.class)
+public class AppConfigTest {
+
+	@Autowired
+	DataSource dataSource;
+
+	/**
+	 * Test for bean instance
+	 */
+	@Test
+	public void testDataSource() {
+		assertNotNull(dataSource);
+	}
+
+	/**
+	 * Test for correct query execution 
+	 * @throws SQLException 
+	 */
+	@Test
+	@Transactional
+	public void testQuery() throws SQLException{
+		ResultSet resultSet =  dataSource.getConnection().createStatement().executeQuery("SELECT 1");
+		String result = null;
+		String expected = "1";
+		while (resultSet.next()) {
+			result = resultSet.getString(1);
+
+		}
+		assertTrue(result.equals(expected));
+	}
+
+}