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‎Chapter 3/jpa-complex-demo/.gitignore

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/target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
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.settings
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.springBeans
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.sts4-cache
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### IntelliJ IDEA ###
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.idea
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*.iws
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*.iml
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*.ipr
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### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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/build/

‎Chapter 3/jpa-complex-demo/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" 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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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-parent</artifactId>
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<version>2.1.2.RELEASE</version>
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<relativePath/> <!-- lookup parent from repository -->
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</parent>
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<groupId>geektime.spring.springbucks</groupId>
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<artifactId>jpa-complex-demo</artifactId>
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<version>0.0.1-SNAPSHOT</version>
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<name>jpa-complex-demo</name>
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<description>Demo project for Spring Boot</description>
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<properties>
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<java.version>1.8</java.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-data-jpa</artifactId>
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</dependency>
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<dependency>
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<groupId>org.joda</groupId>
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<artifactId>joda-money</artifactId>
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<version>1.0.1</version>
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</dependency>
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<dependency>
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<groupId>org.jadira.usertype</groupId>
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<artifactId>usertype.core</artifactId>
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<version>6.0.1.GA</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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<scope>runtime</scope>
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</dependency>
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<dependency>
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<groupId>org.projectlombok</groupId>
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<artifactId>lombok</artifactId>
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<optional>true</optional>
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</dependency>
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<dependency>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-starter-test</artifactId>
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<scope>test</scope>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>org.springframework.boot</groupId>
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<artifactId>spring-boot-maven-plugin</artifactId>
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</plugin>
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</plugins>
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</build>
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</project>

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/JpaDemoApplication.java

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package geektime.spring.springbucks.jpademo;
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import geektime.spring.springbucks.jpademo.model.Coffee;
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import geektime.spring.springbucks.jpademo.model.CoffeeOrder;
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import geektime.spring.springbucks.jpademo.model.OrderState;
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import geektime.spring.springbucks.jpademo.repository.CoffeeOrderRepository;
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import geektime.spring.springbucks.jpademo.repository.CoffeeRepository;
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import lombok.extern.slf4j.Slf4j;
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import org.joda.money.CurrencyUnit;
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import org.joda.money.Money;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.boot.ApplicationArguments;
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import org.springframework.boot.ApplicationRunner;
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import org.springframework.boot.SpringApplication;
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import org.springframework.boot.autoconfigure.SpringBootApplication;
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import org.springframework.data.domain.Sort;
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import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
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import org.springframework.transaction.annotation.EnableTransactionManagement;
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import javax.transaction.Transactional;
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import java.util.Arrays;
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import java.util.Collections;
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import java.util.List;
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import java.util.stream.Collectors;
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@SpringBootApplication
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@EnableJpaRepositories
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@EnableTransactionManagement
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@Slf4j
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public class JpaDemoApplication implements ApplicationRunner {
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@Autowired
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private CoffeeRepository coffeeRepository;
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@Autowired
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private CoffeeOrderRepository orderRepository;
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public static void main(String[] args) {
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SpringApplication.run(JpaDemoApplication.class, args);
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}
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@Override
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@Transactional
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public void run(ApplicationArguments args) throws Exception {
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initOrders();
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findOrders();
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}
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private void initOrders() {
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Coffee latte = Coffee.builder().name("latte")
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.price(Money.of(CurrencyUnit.of("CNY"), 30.0))
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.build();
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coffeeRepository.save(latte);
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log.info("Coffee: {}", latte);
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Coffee espresso = Coffee.builder().name("espresso")
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.price(Money.of(CurrencyUnit.of("CNY"), 20.0))
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.build();
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coffeeRepository.save(espresso);
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log.info("Coffee: {}", espresso);
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CoffeeOrder order = CoffeeOrder.builder()
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.customer("Li Lei")
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.items(Collections.singletonList(espresso))
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.state(OrderState.INIT)
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.build();
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orderRepository.save(order);
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log.info("Order: {}", order);
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order = CoffeeOrder.builder()
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.customer("Li Lei")
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.items(Arrays.asList(espresso, latte))
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.state(OrderState.INIT)
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.build();
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orderRepository.save(order);
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log.info("Order: {}", order);
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}
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private void findOrders() {
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coffeeRepository
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.findAll(Sort.by(Sort.Direction.DESC, "id"))
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.forEach(c -> log.info("Loading {}", c));
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List<CoffeeOrder> list = orderRepository.findTop3ByOrderByUpdateTimeDescIdAsc();
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log.info("findTop3ByOrderByUpdateTimeDescIdAsc: {}", getJoinedOrderId(list));
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list = orderRepository.findByCustomerOrderById("Li Lei");
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log.info("findByCustomerOrderById: {}", getJoinedOrderId(list));
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// 不开启事务会因为没Session而报LazyInitializationException
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list.forEach(o -> {
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log.info("Order {}", o.getId());
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o.getItems().forEach(i -> log.info(" Item {}", i));
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});
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list = orderRepository.findByItems_Name("latte");
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log.info("findByItems_Name: {}", getJoinedOrderId(list));
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}
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private String getJoinedOrderId(List<CoffeeOrder> list) {
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return list.stream().map(o -> o.getId().toString())
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.collect(Collectors.joining(","));
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}
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}
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‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/model/BaseEntity.java

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package geektime.spring.springbucks.jpademo.model;
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import lombok.AllArgsConstructor;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import org.hibernate.annotations.CreationTimestamp;
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import org.hibernate.annotations.UpdateTimestamp;
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import javax.persistence.Column;
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import javax.persistence.GeneratedValue;
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import javax.persistence.Id;
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import javax.persistence.MappedSuperclass;
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import java.io.Serializable;
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import java.util.Date;
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@MappedSuperclass
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@Data
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@NoArgsConstructor
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@AllArgsConstructor
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public class BaseEntity implements Serializable {
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@Id
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@GeneratedValue
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private Long id;
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@Column(updatable = false)
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@CreationTimestamp
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private Date createTime;
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@UpdateTimestamp
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private Date updateTime;
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/model/Coffee.java

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package geektime.spring.springbucks.jpademo.model;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.ToString;
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import org.hibernate.annotations.Type;
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import org.joda.money.Money;
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import javax.persistence.Entity;
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import javax.persistence.Table;
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import java.io.Serializable;
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@Entity
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@Table(name = "T_MENU")
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@Builder
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@Data
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@ToString(callSuper = true)
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@NoArgsConstructor
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@AllArgsConstructor
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public class Coffee extends BaseEntity implements Serializable {
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private String name;
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@Type(type = "org.jadira.usertype.moneyandcurrency.joda.PersistentMoneyAmount",
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parameters = {@org.hibernate.annotations.Parameter(name = "currencyCode", value = "CNY")})
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private Money price;
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/model/CoffeeOrder.java

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package geektime.spring.springbucks.jpademo.model;
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import lombok.AllArgsConstructor;
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import lombok.Builder;
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import lombok.Data;
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import lombok.NoArgsConstructor;
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import lombok.ToString;
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import javax.persistence.Column;
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import javax.persistence.Entity;
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import javax.persistence.Enumerated;
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import javax.persistence.JoinTable;
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import javax.persistence.ManyToMany;
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import javax.persistence.OrderBy;
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import javax.persistence.Table;
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import java.io.Serializable;
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import java.util.List;
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@Entity
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@Table(name = "T_ORDER")
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@Data
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@ToString(callSuper = true)
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@NoArgsConstructor
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@AllArgsConstructor
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@Builder
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public class CoffeeOrder extends BaseEntity implements Serializable {
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private String customer;
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@ManyToMany
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@JoinTable(name = "T_ORDER_COFFEE")
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@OrderBy("id")
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private List<Coffee> items;
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@Enumerated
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@Column(nullable = false)
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private OrderState state;
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/model/OrderState.java

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package geektime.spring.springbucks.jpademo.model;
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public enum OrderState {
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INIT, PAID, BREWING, BREWED, TAKEN, CANCELLED
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/repository/BaseRepository.java

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package geektime.spring.springbucks.jpademo.repository;
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import org.springframework.data.repository.NoRepositoryBean;
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import org.springframework.data.repository.PagingAndSortingRepository;
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import java.util.List;
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@NoRepositoryBean
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public interface BaseRepository<T, Long> extends PagingAndSortingRepository<T, Long> {
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List<T> findTop3ByOrderByUpdateTimeDescIdAsc();
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/repository/CoffeeOrderRepository.java

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package geektime.spring.springbucks.jpademo.repository;
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import geektime.spring.springbucks.jpademo.model.CoffeeOrder;
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import java.util.List;
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public interface CoffeeOrderRepository extends BaseRepository<CoffeeOrder, Long> {
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List<CoffeeOrder> findByCustomerOrderById(String customer);
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List<CoffeeOrder> findByItems_Name(String name);
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}

‎Chapter 3/jpa-complex-demo/src/main/java/geektime/spring/springbucks/jpademo/repository/CoffeeRepository.java

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package geektime.spring.springbucks.jpademo.repository;
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import geektime.spring.springbucks.jpademo.model.Coffee;
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public interface CoffeeRepository extends BaseRepository<Coffee, Long> {
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}

‎Chapter 3/jpa-complex-demo/src/main/resources/application.properties

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spring.jpa.hibernate.ddl-auto=create-drop
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spring.jpa.properties.hibernate.show_sql=true
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spring.jpa.properties.hibernate.format_sql=true

‎Chapter 3/jpa-complex-demo/src/test/java/geektime/spring/springbucks/jpademo/JpaDemoApplicationTests.java

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package geektime.spring.springbucks.jpademo;
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import org.junit.Test;
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import org.junit.runner.RunWith;
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import org.springframework.boot.test.context.SpringBootTest;
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import org.springframework.test.context.junit4.SpringRunner;
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@RunWith(SpringRunner.class)
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@SpringBootTest
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public class JpaDemoApplicationTests {
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@Test
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public void contextLoads() {
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}
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}
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‎Chapter 3/jpa-demo/.gitignore

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/target/
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!.mvn/wrapper/maven-wrapper.jar
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### STS ###
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.apt_generated
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.classpath
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.factorypath
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.project
9+
.settings
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.springBeans
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.sts4-cache
12+
13+
### IntelliJ IDEA ###
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.idea
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*.iws
16+
*.iml
17+
*.ipr
18+
19+
### NetBeans ###
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/nbproject/private/
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/nbbuild/
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/dist/
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/nbdist/
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/.nb-gradle/
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/build/

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