classserviceimpl.java

菲律宾的一个大学的图书管理系统 spring+hibernate+velocity

/*
 * 创建日期 2005-4-18
 */
package biz.bluesky.pts.service.impl;

import java.util.List;

import biz.bluesky.pts.model.TClass;
import biz.bluesky.pts.model.TTestClass;
import biz.bluesky.pts.model.TTeacherClass;
import biz.bluesky.pts.service.IClassService;
import biz.bluesky.pts.service.dao.IClassDAO;
import biz.bluesky.pts.util.ErrorCode;

import org.springframework.dao.DataIntegrityViolationException;
import org.springframework.orm.ObjectRetrievalFailureException;
import org.springframework.dao.DataAccessException;

public class ClassServiceImpl implements IClassService {
    
    private IClassDAO classDAO;

    public void setClassDAO(IClassDAO classDAO) {
        this.classDAO = classDAO;
    }

    public IClassDAO getClassDAO() {
        return this.classDAO;
    }

    //根据班级编号查询班级
    public TClass findClass(int classId) {
        TClass aClass = null;
        try {
            aClass = classDAO.findClass(classId);
        }
        catch(ObjectRetrievalFailureException excp) {
            
        }
        
        return aClass;
    }

    //根据学习编号班级名称查询班级
    public TClass findClass(String className, int schoolId) {
        return classDAO.findClass(className,schoolId);
    }

    //模糊查询学校内的班级
    public List findClasses(String className, int schoolId) {
        return classDAO.findClasses(className,schoolId);
    }
    
    //根据学校编号查询班级
    public List findClasses(int schoolId) {
        return classDAO.findClasses(schoolId);
    }
    
    //根据教师编号查询班级*
    public List findClassesByTeacherId(int teacherId){
    	return classDAO.findClassesByTeacherId(teacherId);
    } 
    
    //新增班级
    public int saveClass(TClass aClass) {
        if((aClass == null)||(aClass.getClassName() == "")) {
            return ErrorCode.ERR_CLASS_EMPTY;
        }
        
        try {
            classDAO.saveClass(aClass);
        }
        catch(DataIntegrityViolationException excp) {
            return ErrorCode.ERR_CLASS_REPEAT;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }

    //新增班级测试
    public int saveTestToClass(int testId, int classId, String year) {
        TTestClass testClass = new TTestClass(testId,classId,year);
        
        try {
            classDAO.saveTestToClass(testClass);
        }
        catch(DataIntegrityViolationException excp) {
            return ErrorCode.ERR_ADD_CLASS_TEST_RELATIONSHIP;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }

    //新增班级的教师
    public int saveTeacherToClass(int teacherId, int classId) {
        TTeacherClass teacherClass = new TTeacherClass(teacherId,classId);
        
        try {
            classDAO.saveTeacherToClass(teacherClass);
        }
        catch(DataIntegrityViolationException excp) {
            return ErrorCode.ERR_ADD_TEACHER_CLASS_RELATETIONSHIP;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }
    
    //删除班级
    public int removeClass(int classId) {
        try {
            classDAO.removeClass(classId);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_CLASS_NOT_FIND;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }

    //删除班级的测试
    public int removeTestFromClass(int testId, int classId, String year) {
        try {
            classDAO.removeTestFromClass(testId,classId,year);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_CLASS_TEST_RELATETIONSHIP_NOT_FIND;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }
    
    //删除班级的教师
    public int removeTeacherFromClass(int teacherId, int classId) {
        try {
            classDAO.removeTeacherFromClass(teacherId,classId);
        }
        catch(ObjectRetrievalFailureException excp) {
            return ErrorCode.ERR_TEACHER_CLASS_RELATETIONSHIP_NOT_FIND;
        }
        catch(DataAccessException excp) {
            return ErrorCode.ERR_UNKNOW;
        }
        
        return ErrorCode.ERR_UNDISCOVERED;
    }
    
}