服务端/course_mgmt/src/com/common/dao/impl/StudentDaoImpl.java

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package com.common.dao.impl;

import java.util.List;

import com.common.dao.StudentDAO;
import com.common.dao.SubjectDAO;
import com.common.model.Student;
import com.common.model.Subject;
import com.common.model.Teacher;

public class StudentDaoImpl extends BaseDAO implements StudentDAO {

	@Override
	public boolean save(Student employee) {
		return saveOrUpdate(employee);
	}

	@Override
	public boolean del(Student employee) {
		// TODO Auto-generated method stub
		return deleteById(Student.class, employee.getId());
	}

	@Override
	public List<Student> list() {
		StringBuffer sb = new StringBuffer();
		sb = new StringBuffer("FROM Student ");

		List<Student> lst = findByHQL(sb.toString());
		return lst;
	}

	@Override
	public Student load(int id) {
		// TODO Auto-generated method stub
		return get(Student.class, id);
	}

	@Override
	public Student load_(String studentno) {
		StringBuffer sb = new StringBuffer();
		sb = new StringBuffer("FROM Student where stu_id='").append(studentno)
				.append("'");

		List<Student> lst = findByHQL(sb.toString());
		if (lst.size() > 0) {
			return lst.get(0);
		} else {
			return null;
		}

	}

	@Override
	public List<Student> list(String stu_college) {
		StringBuffer sb = new StringBuffer();
		sb = new StringBuffer("FROM Student where class_='").append(
				stu_college).append("'");

		List<Student> lst = findByHQL(sb.toString());