src/edu/school/service/impl/TeacherServiceImpl.java

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package edu.school.service.impl;

import edu.school.dao.StudentDao;
import edu.school.dao.TeacherDao;
import edu.school.dao.impl.StudentDaoImpl;
import edu.school.dao.impl.TeacherDaoImpl;
import edu.school.entity.PageTool;
import edu.school.entity.Student;
import edu.school.entity.Teacher;
import edu.school.service.StudentService;
import edu.school.service.TeacherService;

import java.util.List;


public class TeacherServiceImpl implements TeacherService {
    private TeacherDao dao=new TeacherDaoImpl();

    @Override
    public int addTeacher(Teacher teacher) {
        return dao.addTeacher(teacher);
    }

    @Override
    public boolean existsTno(String tno) {
        if(dao.queryByTno(tno)==null){
            return false;//表示不可以用
        }
        return true;//表示可以用
    }

    @Override
    public int queryCount() {
        return dao.queryCount();
    }

    @Override
    public List<Teacher> findAllByPage(PageTool pageTool) {
        return dao.findAllByPage(pageTool);
    }

    @Override
    public int delete(Integer id) {
        return dao.delete(id);
    }

    @Override
    public List<Teacher> findByTeacher(String tno, String realname) {
        return dao.findByTeacher(tno,realname);
    }

    @Override
    public Teacher login(String tno, String pwd) {
        return dao.queryByTnoAndPwd(tno,pwd);
    }

    @Override
    public Teacher queryById(Integer id) {
        return dao.query(id);
    }