backend/src/main/java/nju/seec/helper/dao/MessageDAO.java

package nju.seec.helper.dao;

import nju.seec.helper.entity.Message;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Modifying;
import org.springframework.data.jpa.repository.Query;
import org.springframework.stereotype.Repository;
import org.springframework.transaction.annotation.Transactional;

import java.util.Set;

/**
 * @author cst
 */
@Repository
public interface MessageDAO extends JpaRepository<Message, Long> {
    /**
     * 更新消息已读
     *
     * @param toUserId
     * @param messageIds
     */
    @Transactional(rollbackFor = Exception.class)
    @Modifying
    @Query("update Message m " +
            "set m.read=true " +
            "where m.toUserId=?1 " +
            "and m.id in ?2 ")
    void updateRead(Long toUserId, Set<Long> messageIds);

    /**
     * 删除消息
     *
     * @param toUserId
     * @param messageIds
     */
    void deleteByToUserIdAndIdIn(Long toUserId, Set<Long> messageIds);

    /**
     * 获取消息
     *
     * @param toUserId
     * @param read
     * @param key
     * @param pageable
     * @return
     */
    Page<Message> findByToUserIdAndReadAndContentContains(Long toUserId, Boolean read, String key, Pageable pageable);

//    /**
//     * 基于关联数据删除
//     *
//     * @param refId
//     * @param messageType
//     */
//    void deleteByRefIdAndType(Long refId, MessageType messageType);
}