Add Lesson 29 code

Lesson29.JdbcTemplateBatchUpdate/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+
+<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">
+  <modelVersion>4.0.0</modelVersion>
+
+  <groupId>ru.alishev.springcourse</groupId>
+  <artifactId>spring-jdbc-template</artifactId>
+  <version>1.0-SNAPSHOT</version>
+  <packaging>war</packaging>
+
+  <name>spring-mvc-app1 Maven Webapp</name>
+  <!-- FIXME change it to the project's website -->
+  <url>http://www.example.com</url>
+
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    <maven.compiler.source>1.7</maven.compiler.source>
+    <maven.compiler.target>1.7</maven.compiler.target>
+
+    <spring.version>5.2.1.RELEASE</spring.version>
+  </properties>
+
+  <dependencies>
+    <dependency>
+      <groupId>junit</groupId>
+      <artifactId>junit</artifactId>
+      <version>4.11</version>
+      <scope>test</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-core</artifactId>
+      <version>${spring.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-context</artifactId>
+      <version>${spring.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-web</artifactId>
+      <version>${spring.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-webmvc</artifactId>
+      <version>${spring.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.springframework</groupId>
+      <artifactId>spring-jdbc</artifactId>
+      <version>${spring.version}</version>
+    </dependency>
+
+    <dependency>
+      <groupId>org.thymeleaf</groupId>
+      <artifactId>thymeleaf-spring5</artifactId>
+      <version>3.0.11.RELEASE</version>
+    </dependency>
+
+    <dependency>
+      <groupId>javax.servlet</groupId>
+      <artifactId>javax.servlet-api</artifactId>
+      <version>4.0.1</version>
+      <scope>provided</scope>
+    </dependency>
+
+    <dependency>
+      <groupId>org.hibernate.validator</groupId>
+      <artifactId>hibernate-validator</artifactId>
+      <version>6.1.6.Final</version>
+    </dependency>
+
+    <!-- https://mvnrepository.com/artifact/org.postgresql/postgresql -->
+    <dependency>
+      <groupId>org.postgresql</groupId>
+      <artifactId>postgresql</artifactId>
+      <version>42.2.18</version>
+    </dependency>
+  </dependencies>
+
+  <build>
+    <finalName>spring-mvc-app1</finalName>
+    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
+      <plugins>
+        <plugin>
+          <artifactId>maven-clean-plugin</artifactId>
+          <version>3.1.0</version>
+        </plugin>
+        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
+        <plugin>
+          <artifactId>maven-resources-plugin</artifactId>
+          <version>3.0.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-compiler-plugin</artifactId>
+          <version>3.8.0</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-surefire-plugin</artifactId>
+          <version>2.22.1</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-war-plugin</artifactId>
+          <version>3.2.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-install-plugin</artifactId>
+          <version>2.5.2</version>
+        </plugin>
+        <plugin>
+          <artifactId>maven-deploy-plugin</artifactId>
+          <version>2.8.2</version>
+        </plugin>
+      </plugins>
+    </pluginManagement>
+      <plugins>
+          <plugin>
+              <groupId>org.apache.maven.plugins</groupId>
+              <artifactId>maven-compiler-plugin</artifactId>
+              <configuration>
+                  <source>8</source>
+                  <target>8</target>
+              </configuration>
+          </plugin>
+      </plugins>
+  </build>
+</project>

Lesson29.JdbcTemplateBatchUpdate/src/main/java/ru/alishev/springcourse/config/MySpringMvcDispatcherSerlvetIntitializer.java

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+package ru.alishev.springcourse.config;
+
+import org.springframework.web.filter.HiddenHttpMethodFilter;
+import org.springframework.web.servlet.support.AbstractAnnotationConfigDispatcherServletInitializer;
+
+import javax.servlet.ServletContext;
+import javax.servlet.ServletException;
+
+/**
+ * @author Neil Alishev
+ */
+public class MySpringMvcDispatcherSerlvetIntitializer extends AbstractAnnotationConfigDispatcherServletInitializer {
+    @Override
+    protected Class<?>[] getRootConfigClasses() {
+        return null;
+    }
+
+    @Override
+    protected Class<?>[] getServletConfigClasses() {
+        return new Class[]{SpringConfig.class};
+    }
+
+    @Override
+    protected String[] getServletMappings() {
+        return new String[]{"/"};
+    }
+
+    @Override
+    public void onStartup(ServletContext aServletContext) throws ServletException {
+        super.onStartup(aServletContext);
+        registerHiddenFieldFilter(aServletContext);
+    }
+
+    private void registerHiddenFieldFilter(ServletContext aContext) {
+        aContext.addFilter("hiddenHttpMethodFilter",
+                new HiddenHttpMethodFilter()).addMappingForUrlPatterns(null ,true, "/*");
+    }
+}

Lesson29.JdbcTemplateBatchUpdate/src/main/java/ru/alishev/springcourse/config/SpringConfig.java

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+package ru.alishev.springcourse.config;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.jdbc.datasource.DriverManagerDataSource;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.config.annotation.ViewResolverRegistry;
+import org.springframework.web.servlet.config.annotation.WebMvcConfigurer;
+import org.thymeleaf.spring5.SpringTemplateEngine;
+import org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver;
+import org.thymeleaf.spring5.view.ThymeleafViewResolver;
+
+import javax.sql.DataSource;
+
+/**
+ * @author Neil Alishev
+ */
+@Configuration
+@ComponentScan("ru.alishev.springcourse")
+@EnableWebMvc
+public class SpringConfig implements WebMvcConfigurer {
+
+    private final ApplicationContext applicationContext;
+
+    @Autowired
+    public SpringConfig(ApplicationContext applicationContext) {
+        this.applicationContext = applicationContext;
+    }
+
+    @Bean
+    public SpringResourceTemplateResolver templateResolver() {
+        SpringResourceTemplateResolver templateResolver = new SpringResourceTemplateResolver();
+        templateResolver.setApplicationContext(applicationContext);
+        templateResolver.setPrefix("/WEB-INF/views/");
+        templateResolver.setSuffix(".html");
+        return templateResolver;
+    }
+
+    @Bean
+    public SpringTemplateEngine templateEngine() {
+        SpringTemplateEngine templateEngine = new SpringTemplateEngine();
+        templateEngine.setTemplateResolver(templateResolver());
+        templateEngine.setEnableSpringELCompiler(true);
+        return templateEngine;
+    }
+
+    @Override
+    public void configureViewResolvers(ViewResolverRegistry registry) {
+        ThymeleafViewResolver resolver = new ThymeleafViewResolver();
+        resolver.setTemplateEngine(templateEngine());
+        registry.viewResolver(resolver);
+    }
+
+    @Bean
+    public DataSource dataSource() {
+        DriverManagerDataSource dataSource = new DriverManagerDataSource();
+
+        dataSource.setDriverClassName("org.postgresql.Driver");
+        dataSource.setUrl("jdbc:postgresql://localhost:5432/first_db");
+        dataSource.setUsername("postgres");
+        dataSource.setPassword("postgres");
+
+        return dataSource;
+    }
+
+    @Bean
+    public JdbcTemplate jdbcTemplate() {
+        return new JdbcTemplate(dataSource());
+    }
+}

Lesson29.JdbcTemplateBatchUpdate/src/main/java/ru/alishev/springcourse/controllers/BatchController.java

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+package ru.alishev.springcourse.controllers;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import ru.alishev.springcourse.dao.PersonDAO;
+
+/**
+ * @author Neil Alishev
+ */
+@Controller
+@RequestMapping("/test-batch-update")
+public class BatchController {
+    private final PersonDAO personDAO;
+
+    @Autowired
+    public BatchController(PersonDAO personDAO) {
+        this.personDAO = personDAO;
+    }
+
+    @GetMapping()
+    public String index() {
+        return "batch/index";
+    }
+
+    @GetMapping("/without")
+    public String withoutBatch() {
+        personDAO.testMultipleUpdate();
+        return "redirect:/people";
+    }
+
+    @GetMapping("/with")
+    public String withBatch() {
+        personDAO.testBatchUpdate();
+        return "redirect:/people";
+    }
+}

Lesson29.JdbcTemplateBatchUpdate/src/main/java/ru/alishev/springcourse/controllers/PeopleController.java

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+package ru.alishev.springcourse.controllers;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.validation.BindingResult;
+import org.springframework.web.bind.annotation.*;
+import ru.alishev.springcourse.dao.PersonDAO;
+import ru.alishev.springcourse.models.Person;
+
+import javax.validation.Valid;
+
+/**
+ * @author Neil Alishev
+ */
+@Controller
+@RequestMapping("/people")
+public class PeopleController {
+
+    private final PersonDAO personDAO;
+
+    @Autowired
+    public PeopleController(PersonDAO personDAO) {
+        this.personDAO = personDAO;
+    }
+
+    @GetMapping()
+    public String index(Model model) {
+        model.addAttribute("people", personDAO.index());
+        return "people/index";
+    }
+
+    @GetMapping("/{id}")
+    public String show(@PathVariable("id") int id, Model model) {
+        model.addAttribute("person", personDAO.show(id));
+        return "people/show";
+    }
+
+    @GetMapping("/new")
+    public String newPerson(@ModelAttribute("person") Person person) {
+        return "people/new";
+    }
+
+    @PostMapping()
+    public String create(@ModelAttribute("person") @Valid Person person,
+                         BindingResult bindingResult) {
+        if (bindingResult.hasErrors())
+            return "people/new";
+
+        personDAO.save(person);
+        return "redirect:/people";
+    }
+
+    @GetMapping("/{id}/edit")
+    public String edit(Model model, @PathVariable("id") int id) {
+        model.addAttribute("person", personDAO.show(id));
+        return "people/edit";
+    }
+
+    @PatchMapping("/{id}")
+    public String update(@ModelAttribute("person") @Valid Person person, BindingResult bindingResult,
+                         @PathVariable("id") int id) {
+        if (bindingResult.hasErrors())
+            return "people/edit";
+
+        personDAO.update(id, person);
+        return "redirect:/people";
+    }
+
+    @DeleteMapping("/{id}")
+    public String delete(@PathVariable("id") int id) {
+        personDAO.delete(id);
+        return "redirect:/people";
+    }
+}