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Commit 332bf40

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Spring Datos con Hibernate JPA
Integración del ORM Hibernate con Spring usando la API JPA.
1 parent 6b95ca4 commit 332bf40

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<?xml version="1.0" encoding="UTF-8"?>
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<project-shared-configuration>
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<!--
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This file contains additional configuration written by modules in the NetBeans IDE.
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The configuration is intended to be shared among all the users of project and
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therefore it is assumed to be part of version control checkout.
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Without this configuration present, some functionality in the IDE may be limited or fail altogether.
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-->
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<spring-data xmlns="http://www.netbeans.org/ns/spring-data/1">
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<config-files>
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<config-file>src/main/resources/springXMLConfig.xml</config-file>
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<config-file>src/main/resources/beans.xml</config-file>
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</config-files>
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<config-file-groups/>
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</spring-data>
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</project-shared-configuration>

‎tutorial_hibernate_jpa/nbactions.xml

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<?xml version="1.0" encoding="UTF-8"?>
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<actions>
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<action>
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<actionName>run</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-classpath %classpath carmelo.spring.jpa.SpringHibernateJpa</exec.args>
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<exec.executable>java</exec.executable>
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</properties>
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</action>
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<action>
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<actionName>debug</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-Xdebug -Xrunjdwp:transport=dt_socket,server=n,address=${jpda.address} -classpath %classpath carmelo.spring.jpa.SpringHibernateJpa</exec.args>
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<exec.executable>java</exec.executable>
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<jpda.listen>true</jpda.listen>
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</properties>
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</action>
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<action>
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<actionName>profile</actionName>
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<packagings>
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<packaging>jar</packaging>
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</packagings>
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<goals>
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<goal>process-classes</goal>
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<goal>org.codehaus.mojo:exec-maven-plugin:1.2.1:exec</goal>
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</goals>
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<properties>
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<exec.args>-classpath %classpath carmelo.spring.jpa.SpringHibernateJpa</exec.args>
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<exec.executable>java</exec.executable>
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</properties>
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</action>
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</actions>

‎tutorial_hibernate_jpa/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" 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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<groupId>carmelo.spring</groupId>
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<artifactId>tutorial_hibernate_jpa</artifactId>
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<version>1.0</version>
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<packaging>jar</packaging>
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<dependencies>
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<dependency>
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<groupId>org.springframework</groupId>
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<artifactId>spring-context</artifactId>
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<version>4.3.6.RELEASE</version>
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</dependency>
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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>4.3.6.RELEASE</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>4.3.11.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-entitymanager</artifactId>
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<version>4.3.11.Final</version>
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</dependency>
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<dependency>
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<groupId>org.hsqldb</groupId>
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<artifactId>hsqldb</artifactId>
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<version>2.3.3</version>
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<scope>runtime</scope>
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</dependency>
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</dependencies>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.8</maven.compiler.source>
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<maven.compiler.target>1.8</maven.compiler.target>
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</properties>
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</project>
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package carmelo.spring.jpa;
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import java.util.HashMap;
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import java.util.Map;
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import javax.persistence.EntityManagerFactory;
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import javax.sql.DataSource;
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import org.springframework.beans.factory.annotation.Autowired;
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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.jdbc.datasource.embedded.EmbeddedDatabaseBuilder;
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import org.springframework.jdbc.datasource.embedded.EmbeddedDatabaseType;
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import org.springframework.orm.jpa.JpaTransactionManager;
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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 org.springframework.transaction.PlatformTransactionManager;
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import org.springframework.transaction.annotation.EnableTransactionManagement;
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@Configuration
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@ComponentScan(basePackages = "carmelo.spring.jpa.dao")
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@EnableTransactionManagement
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public class SpringConfiguration {
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@Bean
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public DataSource dataSource() {
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return new EmbeddedDatabaseBuilder()
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.setType(EmbeddedDatabaseType.HSQL)
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.addScript("classpath:schema.sql")
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.addScript("classpath:data.sql")
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.generateUniqueName(true)
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.build();
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}
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@Bean
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public LocalContainerEntityManagerFactoryBean entityManagerFactory() {
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LocalContainerEntityManagerFactoryBean factoryBean
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= new LocalContainerEntityManagerFactoryBean();
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factoryBean.setDataSource(dataSource());
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factoryBean.setJpaVendorAdapter(jpaVendorAdapter());
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factoryBean.setPackagesToScan("carmelo.spring.jpa.model");
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factoryBean.setPersistenceUnitName("pun-hibernate-jpa");
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Map<String, String> props = new HashMap<>();
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props.put("hibernate.format_sql", "true");
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factoryBean.setJpaPropertyMap(props);
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return factoryBean;
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}
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@Bean
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public JpaVendorAdapter jpaVendorAdapter() {
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HibernateJpaVendorAdapter jpaVendorAdapter = new HibernateJpaVendorAdapter();
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jpaVendorAdapter.setGenerateDdl(false);
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jpaVendorAdapter.setDatabase(Database.HSQL);
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jpaVendorAdapter.setShowSql(false);
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return jpaVendorAdapter;
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}
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@Bean
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@Autowired
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public PlatformTransactionManager transactionManager(EntityManagerFactory entityManagerFactory) {
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JpaTransactionManager transactionManager = new JpaTransactionManager();
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transactionManager.setEntityManagerFactory(entityManagerFactory);
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return transactionManager;
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}
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}
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package carmelo.spring.jpa;
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import java.sql.SQLException;
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import carmelo.spring.jpa.dao.ProductDao;
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import carmelo.spring.jpa.model.Product;
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import org.springframework.context.annotation.AnnotationConfigApplicationContext;
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import org.springframework.context.support.AbstractApplicationContext;
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public class SpringHibernateJpa {
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public static void main(String[] args) throws SQLException {
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AbstractApplicationContext ctx
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= new AnnotationConfigApplicationContext(SpringConfiguration.class);
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// obtener bean DAO
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ProductDao product = ctx.getBean("productDaoJpa", ProductDao.class);
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// contar los productos
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System.out.println("Cantidad de productos: " + product.cantidad());
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// buscar el producto con ID = 5
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Product p_5 = product.buscar(5);
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System.out.println("ID = 5: " + p_5);
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// insertar nuevo producto
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product.insertar(new Product(11, "Computer", 800.25));
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// eliminar el producto con ID = 5
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product.eliminar(p_5.getId());
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// actualizar precio de un producto
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Product p_3 = product.buscar(3);
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p_3.setPrice(1111.0);
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product.actualizar(p_3);
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// listar todos los productos
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product.todos().forEach(System.out::println);
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ctx.close();
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}
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}
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package carmelo.spring.jpa.dao;
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import carmelo.spring.jpa.model.Product;
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import java.util.List;
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public interface ProductDao {
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List<Product> todos();
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Integer cantidad();
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Product buscar(Integer id);
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void insertar(Product product);
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void actualizar(Product product);
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void eliminar(Integer id);
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}
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package carmelo.spring.jpa.dao;
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import carmelo.spring.jpa.model.Product;
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import java.sql.ResultSet;
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import java.sql.SQLException;
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import java.util.List;
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import javax.sql.DataSource;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.jdbc.core.JdbcTemplate;
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import org.springframework.jdbc.core.RowMapper;
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import org.springframework.stereotype.Repository;
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@Repository("productDaoJdbc")
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public class ProductDaoImpl implements ProductDao {
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private JdbcTemplate jdbcTemplate;
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@Autowired
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public void setDataSource(DataSource dataSource) {
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this.jdbcTemplate = new JdbcTemplate(dataSource);
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}
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@Override
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public List<Product> todos() {
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String sql = "select * from product";
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return this.jdbcTemplate.query(sql, new RowMapper<Product>() {
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@Override
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public Product mapRow(ResultSet rs, int i) throws SQLException {
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Product p = new Product();
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p.setId(rs.getInt("ID"));
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p.setName(rs.getString("NAME"));
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p.setPrice(rs.getDouble("PRICE"));
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return p;
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}
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});
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}
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@Override
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public Integer cantidad() {
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String sql = "select count(*) from product";
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return this.jdbcTemplate.queryForObject(sql, Integer.class);
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}
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@Override
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public Product buscar(Integer id) {
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String sql = "select * from product where ID = ?";
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return this.jdbcTemplate.queryForObject(sql, new ProductRowMapper(), id);
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}
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@Override
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public void insertar(Product product) {
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String sql = "insert into product (ID, NAME, PRICE) values (?, ?, ?)";
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this.jdbcTemplate.update(sql,
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product.getId(),
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product.getName(),
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product.getPrice());
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}
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@Override
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public void actualizar(Product product) {
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String sql = "update product set NAME = ?, PRICE = ? where ID = ?";
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this.jdbcTemplate.update(sql,
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product.getName(),
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product.getPrice(),
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product.getId());
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}
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@Override
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public void eliminar(Integer id) {
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String sql = "delete from product where ID = ?";
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this.jdbcTemplate.update(sql, id);
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}
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class ProductRowMapper implements RowMapper<Product> {
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@Override
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public Product mapRow(ResultSet rs, int i) throws SQLException {
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Product p = new Product();
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p.setId(rs.getInt("ID"));
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p.setName(rs.getString("NAME"));
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p.setPrice(rs.getDouble("PRICE"));
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return p;
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}
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}
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}
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package carmelo.spring.jpa.dao;
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import carmelo.spring.jpa.model.Product;
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import java.util.List;
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import javax.persistence.EntityManager;
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import javax.persistence.PersistenceContext;
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import javax.persistence.Query;
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import org.springframework.stereotype.Repository;
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import org.springframework.transaction.annotation.Transactional;
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@Repository("productDaoJpa")
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@Transactional
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public class ProductDaoJpaImpl implements ProductDao {
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private EntityManager entityManager;
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@PersistenceContext
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public void setEntityManager(EntityManager entityManager) {
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this.entityManager = entityManager;
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}
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@Override
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public List<Product> todos() {
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String query = "from Product";
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return entityManager.createQuery(query).getResultList();
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}
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@Override
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public Integer cantidad() {
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return entityManager
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.createQuery("select count(p) from Product p", Long.class)
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.getSingleResult().intValue();
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}
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@Override
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public Product buscar(Integer id) {
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return entityManager.find(Product.class, id);
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}
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@Override
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public void insertar(Product product) {
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entityManager.persist(product);
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}
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@Override
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public void actualizar(Product product) {
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entityManager.merge(product);
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}
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@Override
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public void eliminar(Integer id) {
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String jpql = "select p from Product p where p.id = :id";
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Query query = entityManager.createQuery(jpql);
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query.setParameter("id", id);
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Product p = (Product) query.getSingleResult();
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if(p != null) {
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entityManager.remove(p);
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}
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}
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}

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