Java tutorial
/* * To change this license header, choose License Headers in Project Properties. * To change this template file, choose Tools | Templates * and open the template in the editor. */ package chiron.maxscore.service.impl; import chiron.maxscore.dao.GradeDAO; import chiron.maxscore.entity.Grade; import chiron.maxscore.service.GradeService; import java.util.List; import java.util.Map; import org.hibernate.criterion.DetachedCriteria; import org.hibernate.criterion.MatchMode; import org.hibernate.criterion.Restrictions; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.stereotype.Service; import org.springframework.transaction.annotation.Transactional; @Service public class GradeServiceImpl implements GradeService { @Autowired private GradeDAO gradeDAO; @Override public Grade getById(int id) { return gradeDAO.getById(id); } @Transactional @Override public void save(Grade e) { gradeDAO.save(e); } @Transactional @Override public void delete(Grade e) { gradeDAO.delete(e); } @Override public List<Grade> getAll() { return gradeDAO.getAll(); } @Override public List<Grade> search(int page, int pageSize, Map<String, Object> condition) { return gradeDAO.search((page - 1) * pageSize, pageSize, makeCriteria(condition)); } @Override public int count(Map<String, Object> condition) { return gradeDAO.count(makeCriteria(condition)); } private DetachedCriteria makeCriteria(Map<String, Object> condition) { DetachedCriteria criteria = DetachedCriteria.forClass(Grade.class); if (condition == null) { return criteria; } criteria.createAlias("specialty", "s"); criteria.createAlias("s.college", "c"); if (condition.containsKey("college_id")) { criteria.add(Restrictions.eq("c.id", condition.get("college_id"))); } else if (condition.containsKey("specialty_id")) { criteria.add(Restrictions.eq("s.id", condition.get("specialty_id"))); } if (condition.containsKey("grade_name")) { criteria.add( Restrictions.ilike("gradeName", condition.get("grade_name").toString(), MatchMode.ANYWHERE)); } return criteria; } }