Changing code to use interfaces instead of implementations.
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leogtzr
parent
d6fc28e120
commit
e26215578c
@ -1,16 +0,0 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<beansProjectDescription>
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<version>1</version>
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<pluginVersion><![CDATA[3.8.2.201610040608-RELEASE]]></pluginVersion>
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<configSuffixes>
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<configSuffix><![CDATA[xml]]></configSuffix>
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</configSuffixes>
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<enableImports><![CDATA[false]]></enableImports>
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<configs>
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<config>src/main/resources/beans.xml</config>
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</configs>
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<autoconfigs>
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</autoconfigs>
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<configSets>
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</configSets>
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</beansProjectDescription>
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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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<groupId>com.memory.dao</groupId>
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<artifactId>memory-dao-test</artifactId>
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<version>0.0.1</version>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<maven.compiler.source>1.7</maven.compiler.source>
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<maven.compiler.target>1.7</maven.compiler.target>
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</properties>
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<dependencies>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.12</version>
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</dependency>
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<dependency>
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<groupId>org.apache.commons</groupId>
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<artifactId>commons-lang3</artifactId>
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<version>3.0</version>
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</dependency>
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<dependency>
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<groupId>mysql</groupId>
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<artifactId>mysql-connector-java</artifactId>
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<version>5.1.25</version>
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</dependency>
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<!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
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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>1.4.193</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-core</artifactId>
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<version>4.2.5.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-beans</artifactId>
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<version>4.2.5.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-context</artifactId>
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<version>4.2.5.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-jdbc</artifactId>
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<version>4.2.5.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-test</artifactId>
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<version>4.2.5.RELEASE</version>
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<scope>test</scope>
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</dependency>
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</dependencies>
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</project>
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@ -1,22 +0,0 @@
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package com.memory.dao;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.support.ClassPathXmlApplicationContext;
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import com.memory.dao.db.UserDAO;
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import com.memory.dao.pojo.User;
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public class App {
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public static void main(String[] args) {
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final ApplicationContext context = new ClassPathXmlApplicationContext(
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"file:src/main/resources/beans.xml");
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final UserDAO dao = (UserDAO)context.getBean("userDao");
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for (final User user : dao.findAll()) {
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System.out.println(user);
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}
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((ClassPathXmlApplicationContext)context).close();
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}
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}
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@ -1,9 +0,0 @@
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package com.memory.dao;
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import org.springframework.context.annotation.ComponentScan;
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import org.springframework.context.annotation.Configuration;
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@Configuration
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@ComponentScan(basePackages = {"com.memory.dao"})
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public class AppConfig {
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}
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package com.memory.dao.db;
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public enum Queries {
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GET_USER("SELECT * FROM users WHERE name = :name"),
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GET_ALL_USERS("SELECT * FROM users")
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;
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private final String query;
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Queries(final String query) {
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this.query = query;
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}
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public String get() {
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return this.query;
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}
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}
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package com.memory.dao.db;
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import com.memory.dao.pojo.User;
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import java.util.List;
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public interface UserDAO {
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User findByName(String name);
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List<User> findAll();
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}
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@ -1,61 +0,0 @@
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package com.memory.dao.db;
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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 java.util.Map;
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import java.util.HashMap;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.springframework.jdbc.core.RowMapper;
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import org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate;
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import org.springframework.stereotype.Repository;
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import com.memory.dao.pojo.User;
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@Repository
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public class UserDAOImpl implements UserDAO {
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private NamedParameterJdbcTemplate namedParameterJDBCTemplate;
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@Autowired
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public void setNamedParameterJDBCTemplate(final NamedParameterJdbcTemplate namedParameterJDBCTemplate) {
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this.namedParameterJDBCTemplate = namedParameterJDBCTemplate;
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}
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@Override
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public User findByName(final String name) {
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final Map<String, Object> params = new HashMap<>();
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params.put("name", name);
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final User user = namedParameterJDBCTemplate.
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queryForObject(Queries.GET_USER.get(), params, new UserMapper());
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System.out.println("Found: " + user);
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return user;
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}
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@Override
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public List<User> findAll() {
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Map<String, Object> params = new HashMap<String, Object>();
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final List<User> result = namedParameterJDBCTemplate.query(Queries.GET_ALL_USERS.get(), params, new UserMapper());
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return result;
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}
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private static final class UserMapper implements RowMapper<User> {
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@Override
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public User mapRow(final ResultSet rs, final int rowNum) throws SQLException {
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final User user = new User();
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user.setId(rs.getInt("id"));
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user.setName(rs.getString("name"));
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user.setEmail(rs.getString("email"));
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return user;
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}
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}
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}
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@ -1,38 +0,0 @@
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package com.memory.dao.pojo;
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public class User {
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private int id;
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private String name;
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private String email;
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public int getId() {
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return id;
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}
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public void setId(final int id) {
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this.id = id;
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}
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public String getName() {
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return name;
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}
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public void setName(final String name) {
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this.name = name;
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}
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public String getEmail() {
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return email;
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}
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public void setEmail(final String email) {
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this.email = email;
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}
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@Override
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public String toString() {
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return "User [id=" + id + ", name=" + name + ", email=" + email + "]";
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}
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}
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@ -1,20 +0,0 @@
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<?xml version="1.0" encoding="UTF-8"?>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans.xsd">
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<import resource="db-h2-config.xml" />
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<bean id="userDao" class="com.memory.dao.db.UserDAOImpl">
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<property name="namedParameterJDBCTemplate" ref="jdbcTemplate" />
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</bean>
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<bean id="jdbcTemplate"
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class="org.springframework.jdbc.core.namedparam.NamedParameterJdbcTemplate"> <!-- <property name="dataSource" ref="dataSource" /> -->
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<!-- <constructor-arg ref="dbcpDataSource" /> -->
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<constructor-arg ref="dataSource" />
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</bean>
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</beans>
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<beans xmlns="http://www.springframework.org/schema/beans"
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xmlns:context="http://www.springframework.org/schema/context"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:jdbc="http://www.springframework.org/schema/jdbc"
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xsi:schemaLocation="
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http://www.springframework.org/schema/beans
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http://www.springframework.org/schema/beans/spring-beans-4.1.xsd
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http://www.springframework.org/schema/jdbc
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http://www.springframework.org/schema/jdbc/spring-jdbc-4.1.xsd
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http://www.springframework.org/schema/context
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http://www.springframework.org/schema/context/spring-context-4.1.xsd">
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<jdbc:embedded-database id="dataSource" type="H2">
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<jdbc:script location="classpath:db/sql/create-db.sql" />
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<jdbc:script location="classpath:db/sql/insert-data.sql" />
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</jdbc:embedded-database>
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</beans>
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@ -1,7 +0,0 @@
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--DROP TABLE users IF EXISTS;
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CREATE TABLE users (
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id INTEGER PRIMARY KEY,
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name VARCHAR(30),
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email VARCHAR(50)
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);
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@ -1,3 +0,0 @@
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INSERT INTO users VALUES (1, 'mkyong', 'mkyong@gmail.com');
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INSERT INTO users VALUES (2, 'alex', 'alex@yahoo.com');
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INSERT INTO users VALUES (3, 'joel', 'joel@gmail.com');
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@ -1,30 +0,0 @@
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package com.memory.dao;
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import static org.junit.Assert.assertTrue;
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import org.junit.Before;
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import org.junit.Test;
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import org.springframework.beans.factory.annotation.Autowired;
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import org.junit.runner.RunWith;
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import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
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import org.springframework.test.context.ContextConfiguration;
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import com.memory.dao.db.UserDAO;
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@RunWith(SpringJUnit4ClassRunner.class)
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@ContextConfiguration("/beans.xml")
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public class AppTest {
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@Autowired
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private UserDAO dao;
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@Before
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public void setUp() {
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System.out.println(String.format("Dao is: %s", dao));
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}
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@Test
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public void testApp() {
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assertTrue(true);
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}
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}
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