springdao : RowMapper

Employee.java
=============

package springDAO;

public class Employee {
    private int id;
    private String name;
    private float salary;
    
    public Employee(){}
    public Employee(int id,String name,float salary){
    this.id = id;
    this.name = name;
    this.salary = salary;
       
    }

    public int getId() {
        return id;
    }

    public void setId(int id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public float getSalary() {
        return salary;
    }

    public void setSalary(float salary) {
        this.salary = salary;
    }
    public String toString(){  
    return id+" "+name+" "+salary;  
}   
}


EmployeeDAO.java
=================

package springDAO;
import java.sql.ResultSet;  
import java.sql.SQLException;  
import java.util.List;  
import org.springframework.jdbc.core.JdbcTemplate;  
import org.springframework.jdbc.core.RowMapper;
class A implements RowMapper<Employee>{
    @Override
    public Employee mapRow(ResultSet rs, int i) throws SQLException {
        Employee e=new Employee();  
        e.setId(rs.getInt(1));  
        e.setName(rs.getString(2));  
        e.setSalary(rs.getInt(3));  
        return e;  
    }
}

public class EmployeeDAO {
    private JdbcTemplate jdbcTemplate;  
  
public void setJdbcTemplate(JdbcTemplate jdbcTemplate) {  
    this.jdbcTemplate = jdbcTemplate;  
} 
public List<Employee> getAllEmployeesRowMapper1(){  
 return jdbcTemplate.query("select * from employee",new A());  
}  
public List<Employee> getAllEmployeesRowMapper(){  
 return jdbcTemplate.query("select * from employee",new RowMapper<Employee>(){  
    @Override  
    public Employee mapRow(ResultSet rs, int rownumber) throws SQLException {  
        Employee e=new Employee();  
        e.setId(rs.getInt(1));  
        e.setName(rs.getString(2));  
        e.setSalary(rs.getInt(3));  
        return e;  
    }  
    });  
}      
}


Beans.xml
=========

<?xml version="1.0" encoding="UTF-8"?>
<beans  
    xmlns="http://www.springframework.org/schema/beans"  
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"  
    xmlns:p="http://www.springframework.org/schema/p"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
http://www.springframework.org/schema/beans/spring-beans-4.0.xsd"> 
    
    <bean id="ds" class="org.springframework.jdbc.datasource.DriverManagerDataSource"> 
        <property name="driverClassName" value="org.apache.derby.jdbc.ClientDriver" />  
        <property name="url" value="jdbc:derby://localhost:1527/myemp" />  
        <property name="username" value="app" />  
        <property name="password" value="app" /> 
    
    </bean>
    <bean id="jdbcTemplate" class="org.springframework.jdbc.core.JdbcTemplate">  
    <property name="dataSource" ref="ds"></property>  
    </bean>  
  
    <bean id="empdao" class="springDAO.EmployeeDAO">  
    <property name="jdbcTemplate" ref="jdbcTemplate"></property>  
    </bean>  
     
    
</beans>


Test.java
=========
package springDAO;

import java.util.List;
import org.springframework.context.ApplicationContext;  
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class Test {

    public static void main(String[] args) {
        
        ApplicationContext ctx = new ClassPathXmlApplicationContext("Beans.xml");
        EmployeeDAO empDAO = ctx.getBean("empdao", EmployeeDAO.class);
      
        List<Employee> list = empDAO.getAllEmployeesRowMapper1();
        for(Employee e: list){
            System.out.println(e);        
        }
    }    
}