Dorado 9 : 13.3.2.2 准备后台服务

package com.bstek.dorado.sample.standardlesson.service;

import java.util.Collection;
import java.util.HashMap;
import java.util.Map;
import javax.annotation.Resource;
import org.springframework.stereotype.Component;
import org.springframework.transaction.annotation.Transactional;
import com.bstek.dorado.annotation.DataProvider;
import com.bstek.dorado.annotation.DataResolver;
import com.bstek.dorado.data.provider.Page;
import com.bstek.dorado.sample.standardlesson.dao.SlEmployeeDao;
import com.bstek.dorado.sample.standardlesson.dao.SlMessageDao;
import com.bstek.dorado.sample.standardlesson.entity.SlEmployee;
import com.bstek.dorado.sample.standardlesson.entity.SlMessage;

@Component
public class MessageService {
    @Resource
    private SlMessageDao slMessageDao;
    
    @Resource
    private SlEmployeeDao slEmployeeDao;
    
    @DataResolver
    @Transactional
    public void saveMessages(Collection<SlEmployee> slEmployees){
        for(SlEmployee employee:slEmployees){
            Collection<SlMessage> messages = employee.getSlMessageSet();
            for(SlMessage message:messages){
                //维护关联关系
                message.setSlEmployee(employee);
            }
            slMessageDao.persistEntities(messages);
        }
    }
    
    @DataProvider
    public void getMessageByEmployeeId(Page<SlMessage> page, Integer employeeId){
        String hql = "from SlMessage where slEmployee.employeeId = :employeeId";
        Map param = new HashMap();
        param.put("employeeId", employeeId);
        slMessageDao.find(page,hql,param);
    }
}