mybatis文件映射之利用延迟加载解决collection分布查询（六）

public class Employee {
    private Integer id;
    private String lastName;
    private String gender;
    private String email;
    Department dept;
}

public class Department {
    private Integer id;
    private String deptName;
    private List<Employee> employee;
}

public interface EmployeeMapperPlus {
    public List<Employee> getEmpsByDeptId(Integer id);
}

    <select id="getEmpsByDeptId" resultType="com.gong.mybatis.bean.Employee">
        select * from tbl_employee where d_id=#{deptId}
    </select>

public interface DepartmentMapper {    
    public Department getDeptByIdStep(Integer id);
}

    <resultMap type="com.gong.mybatis.bean.Department" id="MyDeptStep">
        <id column="id" property="id"/>
        <result column="dept_name" property="deptName"/>
        <collection property="employee" select="com.gong.mybatis.dao.EmployeeMapperPlus.getEmpsByDeptId"
        column="id">    
        </collection>
    </resultMap>
    <select id="getDeptByIdStep" resultMap="MyDeptStep">
        select id,dept_name from tbl_department where id=#{id}
    </select>

    <settings>
        <setting name="lazyLoadingEnabled" value="true"/>
        <setting name="aggressiveLazyLoading" value="false"/>
    </settings>

package com.gong.mybatis.test;

import java.io.IOException;
import java.io.InputStream;
import java.util.List;
import java.util.Map;

import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;

import com.gong.mybatis.bean.Department;
import com.gong.mybatis.bean.Employee;
import com.gong.mybatis.dao.DepartmentMapper;
import com.gong.mybatis.dao.EmployeeMapperPlus;

public class TestMybatis2 {
    
    public SqlSessionFactory getSqlSessionFactory() throws IOException {
        String resource = "mybatis-config.xml";
        InputStream is = Resources.getResourceAsStream(resource);
        return new SqlSessionFactoryBuilder().build(is);
    }

    @Test
    public void test2() throws IOException {
        SqlSessionFactory sqlSessionFactory = getSqlSessionFactory();
        SqlSession openSession = sqlSessionFactory.openSession();
        try {
            DepartmentMapper mapper = openSession.getMapper(DepartmentMapper.class);
            Department department = mapper.getDeptByIdStep(1);
            System.out.println(department.getDeptName());
            openSession.commit();
        } finally {
            openSession.close();
        }
        
    }

}

System.out.println(department.getEmployee());