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tboychuktboychuk
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Add Tx manager with JPA tutorial
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14 files changed

+283
-10
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14 files changed

+283
-10
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‎jpa-tx-management/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<parent>
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<artifactId>spring-framework-tutorial</artifactId>
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<groupId>com.bobocode</groupId>
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<version>1.0-SNAPSHOT</version>
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</parent>
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<modelVersion>4.0.0</modelVersion>
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<artifactId>jpa-tx-management</artifactId>
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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-orm</artifactId>
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<version>5.0.7.RELEASE</version>
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</dependency>
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<dependency>
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<groupId>com.h2database</groupId>
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<artifactId>h2</artifactId>
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<version>1.4.197</version>
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</dependency>
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<dependency>
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<groupId>org.slf4j</groupId>
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<artifactId>slf4j-simple</artifactId>
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<version>1.7.24</version>
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</dependency>
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<dependency>
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<groupId>org.hibernate.javax.persistence</groupId>
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<artifactId>hibernate-jpa-2.1-api</artifactId>
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<version>1.0.2.Final</version>
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</dependency>
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<dependency>
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<groupId>org.hibernate</groupId>
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<artifactId>hibernate-core</artifactId>
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<version>5.3.2.Final</version>
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</dependency>
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<!--Since JAXB APIs is no longer in default classpath in JDK 1.9 -->
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<dependency>
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<groupId>javax.xml.bind</groupId>
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<artifactId>jaxb-api</artifactId>
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<version>2.2.11</version>
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</dependency>
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<dependency>
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<groupId>com.bobocode</groupId>
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<artifactId>spring-framework-tutorial-util</artifactId>
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<version>1.0-SNAPSHOT</version>
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</dependency>
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</dependencies>
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</project>

‎jpa-tx-management/src/main/java/com/bobocode/AccountApp.java

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package com.bobocode;
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import com.bobocode.config.RootConfig;
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import com.bobocode.model.Account;
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import com.bobocode.service.AccountService;
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import com.bobocode.util.TestDataGenerator;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import java.math.BigDecimal;
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import java.util.List;
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/**
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* This this code snipped shows Spring Transaction Manager with JPA example
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*/
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public class AccountApp {
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private static AccountService accountService;
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public static void main(String[] args) {
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init();
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accountService.printAllAccounts();
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accountService.withdraw(1L, BigDecimal.valueOf(1_000_000));
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accountService.printAllAccounts();
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}
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private static void init() {
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ApplicationContext context = new AnnotationConfigApplicationContext(RootConfig.class);
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accountService = context.getBean(AccountService.class);
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List<Account> accountList = TestDataGenerator.getAccountList(5);
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accountList.forEach(accountService::save);
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}
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}

‎jpa-tx-management/src/main/java/com/bobocode/config/JpaConfig.java

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package com.bobocode.config;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
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import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
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import org.springframework.orm.jpa.JpaVendorAdapter;
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import org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean;
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import org.springframework.orm.jpa.vendor.Database;
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import org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter;
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import javax.sql.DataSource;
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@Configuration
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public class JpaConfig {
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@Bean
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DataSource testDataSource() {
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return new EmbeddedDatabaseBuilder()
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.setType(EmbeddedDatabaseType.H2)
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.setName("bobocodeDB")
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.build();
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}
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@Bean
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JpaVendorAdapter testJpaVendorAdapter() {
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HibernateJpaVendorAdapter adapter = new HibernateJpaVendorAdapter();
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adapter.setDatabase(Database.H2);
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adapter.setShowSql(true);
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adapter.setGenerateDdl(true);
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adapter.setDatabasePlatform("org.hibernate.dialect.H2Dialect");
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return adapter;
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}
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@Bean("entityManagerFactory")
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LocalContainerEntityManagerFactoryBean localContainerEMF(DataSource dataSource, JpaVendorAdapter jpaVendorAdapter) {
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LocalContainerEntityManagerFactoryBean lcmfb = new LocalContainerEntityManagerFactoryBean();
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lcmfb.setDataSource(dataSource);
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lcmfb.setJpaVendorAdapter(jpaVendorAdapter);
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lcmfb.setPersistenceUnitName("bobocode");
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lcmfb.setPackagesToScan("com.bobocode.model");
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return lcmfb;
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}
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// todo: instead of configuring previous three beans you can use file META-INF/persistence.xml and the following bean
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/*@Bean("entityManagerFactory")
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public LocalEntityManagerFactoryBean entityManagerFactoryBean() {
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LocalEntityManagerFactoryBean emfb = new LocalEntityManagerFactoryBean();
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emfb.setPersistenceUnitName("bobocode");
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return emfb;
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}*/
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}

‎jpa-tx-management/src/main/java/com/bobocode/config/RootConfig.java

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package com.bobocode.config;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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import org.springframework.orm.jpa.JpaTransactionManager;
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import org.springframework.transaction.PlatformTransactionManager;
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import org.springframework.transaction.annotation.EnableTransactionManagement;
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import javax.persistence.EntityManagerFactory;
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@Configuration
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@ComponentScan("com.bobocode")
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@EnableTransactionManagement
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public class RootConfig {
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@Bean
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public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory){
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return new JpaTransactionManager(entityManagerFactory);
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}
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}

‎jpa-tx-management/src/main/java/com/bobocode/dao/AccountDao.java

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package com.bobocode.dao;
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import com.bobocode.model.Account;
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import java.util.List;
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public interface AccountDao {
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List<Account> findAll();
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Account findById(long id);
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void save(Account account);
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}

‎jpa-tx-management/src/main/java/com/bobocode/dao/impl/JpaAccountDao.java

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package com.bobocode.dao.impl;
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import com.bobocode.dao.AccountDao;
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import com.bobocode.model.Account;
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import org.springframework.stereotype.Repository;
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import org.springframework.transaction.annotation.Transactional;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import java.util.List;
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@Repository
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@Transactional
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public class JpaAccountDao implements AccountDao {
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@PersistenceContext
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private EntityManager entityManager;
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@Override
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public List<Account> findAll() {
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return entityManager.createQuery("select a from Account a", Account.class).getResultList();
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}
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@Override
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public Account findById(long id) {
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return entityManager.find(Account.class, id);
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}
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@Override
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public void save(Account account) {
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entityManager.persist(account);
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}
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}

‎jpa-tx-management/src/main/java/com/bobocode/service/AccountService.java

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package com.bobocode.service;
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import com.bobocode.dao.AccountDao;
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import com.bobocode.model.Account;
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import org.springframework.stereotype.Service;
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import org.springframework.transaction.annotation.Transactional;
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import java.math.BigDecimal;
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import java.util.List;
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@Service
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@Transactional
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public class AccountService {
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private AccountDao accountDao;
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public AccountService(AccountDao accountDao) {
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this.accountDao = accountDao;
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}
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public void save(Account account) {
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accountDao.save(account);
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}
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public void withdraw(long accountId, BigDecimal value) {
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Account account = accountDao.findById(accountId);
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account.setBalance(account.getBalance().add(value));
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}
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@Transactional(readOnly = true)
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public void printAllAccounts() {
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List<Account> accounts = accountDao.findAll();
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accounts.forEach(System.out::println);
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}
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}

‎mvc-basics/src/main/java/com/bobocode/web/controller/WelcomeController.java

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package com.bobocode.web.controller;
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import org.springframework.stereotype.Controller;
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import org.springframework.ui.Model;
45
import org.springframework.web.bind.annotation.GetMapping;
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@Controller

‎mvc-basics/src/main/webapp/WEB-INF/views/welcome.jsp

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<%@ page contentType="text/html;charset=UTF-8" language="java" %>
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Ú<%@ page contentType="text/html;charset=UTF-8" language="java" %>
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<html>
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<head>
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<meta charset="UTF-8">

‎pom.xml

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<module>aop-basics</module>
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<module>mvc-basics</module>
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<module>rest-basics</module>
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<module>jpa-tx-management</module>
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</modules>
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<properties>
@@ -34,6 +35,11 @@
3435
<artifactId>spring-context</artifactId>
3536
<version>5.0.7.RELEASE</version>
3637
</dependency>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-tx</artifactId>
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<version>5.0.7.RELEASE</version>
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</dependency>
3743
<dependency>
3844
<groupId>javax.annotation</groupId>
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<artifactId>javax.annotation-api</artifactId>

‎rest-basics/src/main/java/com/bobocode/web/controller/AccountRestController.java

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import com.bobocode.model.Account;
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import com.bobocode.service.AccountService;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.HttpStatus;
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import org.springframework.web.bind.annotation.*;
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import java.util.Collection;
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import java.util.List;
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import java.util.Objects;
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‎spring-framework-tutorial-model/pom.xml

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</parent>
1212
<artifactId>spring-framework-tutorial-model</artifactId>
1313

14+
<dependencies>
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<dependency>
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<groupId>org.hibernate.javax.persistence</groupId>
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<artifactId>hibernate-jpa-2.1-api</artifactId>
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<version>1.0.2.Final</version>
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</dependency>
20+
<dependency>
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<groupId>org.hibernate</groupId>
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<artifactId>hibernate-core</artifactId>
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<version>5.3.2.Final</version>
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</dependency>
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</dependencies>
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1527

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</project>

‎spring-framework-tutorial-model/src/main/java/com/bobocode/model/Account.java

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package com.bobocode.model;
22

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import com.bobocode.model.Gender;
34
import lombok.*;
45

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import javax.persistence.*;
57
import java.math.BigDecimal;
68
import java.time.LocalDate;
79
import java.time.LocalDateTime;
810

911
@NoArgsConstructor
10-
@Getter
11-
@Setter
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@Getter @Setter
1213
@ToString
1314
@EqualsAndHashCode(of = "email")
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@Entity
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@Table(name = "accounts")
1417
public class Account {
18+
@Id
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@GeneratedValue
1520
private Long id;
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@Column(name = "first_name")
1623
private String firstName;
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@Column(name = "last_name")
1726
private String lastName;
27+
28+
@Column(name = "email", unique = true)
1829
private String email;
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31+
@Column(name = "birthday")
1932
private LocalDate birthday;
33+
34+
@Column(name = "gender")
35+
@Enumerated(EnumType.STRING)
2036
private Gender gender;
21-
private LocalDateTime creationDate;
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@Column(name = "creation_time")
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private LocalDateTime creationTime;
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41+
@Column(name = "balance")
2242
private BigDecimal balance = BigDecimal.ZERO;
2343
}

‎spring-framework-tutorial-util/src/main/java/com/bobocode/util/TestDataGenerator.java

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115115
person.getDateOfBirth().getDayOfMonth()));
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fakeAccount.setGender(Gender.valueOf(person.getSex().name()));
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fakeAccount.setBalance(BigDecimal.valueOf(random.nextInt(200_000)));
118-
fakeAccount.setCreationDate(LocalDateTime.now());
118+
fakeAccount.setCreationTime(LocalDateTime.now());
119119

120120
return fakeAccount;
121121
}
122122

123123
public static List<Account> getAccountList(int size){
124-
return range(0, size)
125-
.mapToObj(i -> getAccount())
124+
return Stream.generate(TestDataGenerator::getAccount)
125+
.limit(size)
126126
.collect(toList());
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}
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