Adding Chapter02 module.

Author: sivaprasadreddy

mybatisdemo-parent/chapter02/pom.xml

@@ -0,0 +1,26 @@
+<?xml version="1.0"?>
+<project xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 
+	http://maven.apache.org/xsd/maven-4.0.0.xsd" 
+	xmlns="http://maven.apache.org/POM/4.0.0"
+    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
+  <modelVersion>4.0.0</modelVersion>
+  
+  <parent>
+    <artifactId>mybatisdemo-parent</artifactId>
+    <groupId>com.mybatisdemo</groupId>
+    <version>0.0.1</version>
+  </parent>
+  
+  <artifactId>chapter02</artifactId>
+  <name>chapter02</name>
+  <url>http://maven.apache.org</url>
+  
+  <properties>
+    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+  </properties>
+  
+  <dependencies>
+    
+  </dependencies>
+  
+</project>

mybatisdemo-parent/chapter02/src/main/java/chapter02/MyBatisUtil.java

@@ -0,0 +1,66 @@
+package chapter02;
+
+import java.io.IOException;
+import java.io.InputStream;
+
+import org.apache.ibatis.datasource.pooled.PooledDataSource;
+import org.apache.ibatis.io.Resources;
+import org.apache.ibatis.mapping.Environment;
+import org.apache.ibatis.session.Configuration;
+import org.apache.ibatis.session.SqlSessionFactory;
+import org.apache.ibatis.session.SqlSessionFactoryBuilder;
+import org.apache.ibatis.transaction.TransactionFactory;
+import org.apache.ibatis.transaction.jdbc.JdbcTransactionFactory;
+
+/**
+ * @author Siva
+ *
+ */
+public class MyBatisUtil
+{
+	private static SqlSessionFactory xmlSqlSessionFactory;
+	private static SqlSessionFactory javaSqlSessionFactory;
+	
+	public static SqlSessionFactory getSqlSessionFactoryUsingXML()
+	{
+		if(xmlSqlSessionFactory==null) 
+		{
+			InputStream inputStream;
+			try
+			{
+				inputStream = Resources.getResourceAsStream("mybatis-config.xml");
+				xmlSqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
+			}catch (IOException e)
+			{
+				throw new RuntimeException(e);
+			}
+		}
+		return xmlSqlSessionFactory;
+	}
+	
+	public static SqlSessionFactory getSqlSessionFactoryUsingJavaAPI()
+	{
+		if(javaSqlSessionFactory==null) 
+		{
+			try
+			{
+				String driver = "com.mysql.jdbc.Driver";
+				String url = "jdbc:mysql://localhost:3306/mybatisdemo";
+				String username = "root";
+				String password = "admin";
+				PooledDataSource dataSource = new PooledDataSource(driver, url, username, password);
+				TransactionFactory transactionFactory = new JdbcTransactionFactory();
+				Environment environment = new Environment("development", transactionFactory, dataSource);
+				Configuration configuration = new Configuration(environment);
+				configuration.getTypeAliasRegistry().registerAliases("chapter02");
+				configuration.addMapper(StudentMapper.class);
+				javaSqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
+				
+			}catch (Exception e)
+			{
+				throw new RuntimeException(e);
+			}
+		}
+		return javaSqlSessionFactory;
+	}
+}

mybatisdemo-parent/chapter02/src/main/java/chapter02/Student.java

@@ -0,0 +1,65 @@
+package chapter02;
+
+import java.util.Date;
+
+
+/**
+ * @author Siva
+ *
+ */
+public class Student
+{
+	private Integer id;
+	private String name;
+	private String email;
+	private Date dob;
+	
+	
+	@Override
+	public String toString()
+	{
+		return "Student [id=" + id + ", name=" + name + ", email=" + email
+				+ ", dob=" + dob + "]";
+	}
+	public Student()
+	{
+	}
+	public Student(Integer id)
+	{
+		this.id = id;
+	}
+	public Integer getId()
+	{
+		return id;
+	}
+	public void setId(Integer id)
+	{
+		this.id = id;
+	}
+	public String getName()
+	{
+		return name;
+	}
+	public void setName(String name)
+	{
+		this.name = name;
+	}
+	public String getEmail()
+	{
+		return email;
+	}
+	public void setEmail(String email)
+	{
+		this.email = email;
+	}
+	public Date getDob()
+	{
+		return dob;
+	}
+	public void setDob(Date dob)
+	{
+		this.dob = dob;
+	}
+	
+	
+}

mybatisdemo-parent/chapter02/src/main/java/chapter02/StudentMapper.java

@@ -0,0 +1,20 @@
+package chapter02;
+
+import java.util.List;
+
+/**
+ * @author Siva
+ *
+ */
+public interface StudentMapper
+{
+
+	List<Student> findAllStudents();
+
+	Student findStudentById(Integer id);
+
+	void insertStudent(Student student);
+
+	void updateStudent(Student student);
+
+}

mybatisdemo-parent/chapter02/src/main/java/chapter02/StudentService.java

@@ -0,0 +1,65 @@
+package chapter02;
+
+import java.util.List;
+
+import org.apache.ibatis.session.SqlSession;
+import org.slf4j.Logger;
+import org.slf4j.LoggerFactory;
+
+public class StudentService 
+{
+	private Logger logger = LoggerFactory.getLogger(getClass());
+	
+	protected SqlSession openSqlSession()
+	{
+		//return MyBatisUtil.getSqlSessionFactoryUsingXML().openSession();
+		return MyBatisUtil.getSqlSessionFactoryUsingJavaAPI().openSession();
+	}
+	public List<Student> findAllStudents()
+	{
+		SqlSession sqlSession = openSqlSession();
+		try {
+			StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);
+			return studentMapper.findAllStudents();
+		} finally {
+			sqlSession.close();
+		}
+	}
+	
+	public Student findStudentById(Integer studId)
+	{
+		logger.debug("Select Student By ID :{}", studId);
+		SqlSession sqlSession = openSqlSession();
+		try {
+			StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);
+			return studentMapper.findStudentById(studId);
+			//return sqlSession.selectOne("chapter01.StudentMapper.findStudentById", studId);
+		} finally {
+			sqlSession.close();
+		}
+	}
+	
+	public void createStudent(Student student)
+	{
+		SqlSession sqlSession = openSqlSession();
+		try {
+			StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);
+			studentMapper.insertStudent(student);
+			sqlSession.commit();
+		} finally {
+			sqlSession.close();
+		}
+	}
+	
+	public void updateStudent(Student student)
+	{
+		SqlSession sqlSession = openSqlSession();
+		try {
+			StudentMapper studentMapper = sqlSession.getMapper(StudentMapper.class);
+			studentMapper.updateStudent(student);
+			sqlSession.commit();
+		} finally {
+			sqlSession.close();
+		}
+	}
+}

mybatisdemo-parent/chapter02/src/main/resources/application.properties

@@ -0,0 +1,8 @@
+
+
+################### DataSource Configuration ##########################
+
+jdbc.driverClassName=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://localhost:3306/mybatisdemo
+jdbc.username=root
+jdbc.password=admin

mybatisdemo-parent/chapter02/src/main/resources/chapter02/StudentMapper.xml

@@ -0,0 +1,31 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE mapper
+  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"
+  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
+  
+<mapper namespace="chapter02.StudentMapper">
+	
+	<resultMap type="Student" id="StudentResult">
+		<id 	property="id" column="student_id"/>
+		<result property="name" column="name"/>
+		<result property="email" column="email"/>
+		<result property="dob" column="dob"/>
+	</resultMap>
+  
+  	<select id="findAllStudents" resultMap="StudentResult">
+    	select * from Students
+  	</select>
+  	
+  	<select id="findStudentById" parameterType="int" resultType="Student">
+    	select stud_id as id, name, email, dob from Students where stud_id=#{Id}
+  	</select>
+  	
+  	<insert id="insertStudent" parameterType="Student" useGeneratedKeys="true" keyProperty="id">
+  		INSERT INTO STUDENTS(NAME,EMAIL,DOB) VALUES(#{name},#{email},#{dob})
+  	</insert>
+  	
+  	<update id="updateStudent" parameterType="Student">
+  		UPDATE STUDENTS SET NAME=#{name}, EMAIL=#{email}, DOB=#{dob} WHERE STUD_ID=#{id}
+  	</update>
+  	
+</mapper>

mybatisdemo-parent/chapter02/src/main/resources/log4j.properties

@@ -0,0 +1,15 @@
+log4j.rootLogger=INFO, stdout
+
+log4j.appender.stdout=org.apache.log4j.ConsoleAppender
+log4j.appender.stdout.layout=org.apache.log4j.PatternLayout
+log4j.appender.stdout.layout.ConversionPattern=%d [%-5p] %c - %m%n
+
+log4j.appender.file=org.apache.log4j.RollingFileAppender
+log4j.appender.file.File=mybatisapp.log
+log4j.appender.R.MaxFileSize=100KB
+# Keep one backup file
+log4j.appender.R.MaxBackupIndex=10
+log4j.appender.file.layout=org.apache.log4j.PatternLayout
+log4j.appender.file.layout.ConversionPattern=%d [%-5p] %c - %m%n
+
+log4j.logger.chapter02=DEBUG

mybatisdemo-parent/chapter02/src/main/resources/mybatis-config.xml

@@ -0,0 +1,30 @@
+<?xml version="1.0" encoding="UTF-8" ?>
+<!DOCTYPE configuration
+  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
+  "http://mybatis.org/dtd/mybatis-3-config.dtd">
+<configuration>
+
+	  <properties resource="application.properties"/>
+		
+	  <typeAliases>
+	  	<package name="chapter02"/>
+	  </typeAliases>
+	
+	  <environments default="development">
+	    <environment id="development">
+	      <transactionManager type="JDBC"/>
+	      <dataSource type="POOLED">
+	        <property name="driver" value="${jdbc.driverClassName}"/>
+	        <property name="url" value="${jdbc.url}"/>
+	        <property name="username" value="${jdbc.username}"/>
+	        <property name="password" value="${jdbc.password}"/>
+	      </dataSource>
+	    </environment>
+	  </environments>
+	  
+	  <mappers>
+	    <mapper resource="chapter02/StudentMapper.xml"/>
+	  </mappers>
+  	
+  	
+</configuration>