Mybatis使用collection标签进行树形结构数据查询时携带外部参数查询

    <resultMap type="com.stonewu.blog.core.entity.custom.ReplyTree" id="replyTree">
        <id column="id" property="id"/>
        <result column="content" property="content"/>
        <result column="article_id" property="articleId"/>
        <result column="author_id" property="authorId"/>
        <result column="parent_reply_id" property="parentReplyId"/>
        <result column="check_reply" property="checkReply"/>
        <collection column="id=id,authorId=author_id" property="children" ofType="com.stonewu.blog.core.entity.custom.ReplyTree" javaType="java.util.ArrayList" select="getReplyChildren">
        </collection>
    </resultMap>
    <resultMap type="com.stonewu.blog.core.entity.custom.ReplyTree" id="replyTreeChild">
        <id column="id" property="id"/>
        <result column="content" property="content"/>
        <result column="article_id" property="articleId"/>
        <result column="author_id" property="authorId"/>
        <result column="parent_reply_id" property="parentReplyId"/>
        <result column="check_reply" property="checkReply"/>
        <collection column="id=id,authorId=author_id" property="children" ofType="com.stonewu.blog.core.entity.custom.ReplyTree" javaType="java.util.ArrayList" select="getReplyChildren">
        </collection>
    </resultMap>

    <select id="findReplyTreeByParam" parameterType="com.stonewu.blog.core.entity.custom.ReplyTree"
            resultMap="replyTree">
        SELECT
        r.*, a.title article_title,
        m.nick_name author_name
        FROM
        reply r
        LEFT JOIN article a ON r.article_id = a.id
        LEFT JOIN menber m ON m.id = r.author_id
        WHERE 1 = 1
        <if test="param.id != null">
            AND a.id = #{param.id}
        </if>
        <if test="param.articleId != null">
            AND article_id = #{param.articleId}
        </if>
        <if test="param.topReplyId != null">
            AND top_reply_id = #{param.topReplyId}
        </if>
        AND parent_reply_id is null
        <if test="param.checkReply != null">
            AND ( check_reply = #{param.checkReply}
            <if test="param.authorId != null">
                or m.id = #{param.authorId}
            </if>
            )
        </if>
        <if test="param.replyType != null">
            AND reply_type = #{param.replyType}
        </if>
    </select>

    <select id="getReplyChildren" resultMap="replyTreeChild">
        SELECT
        r.*, a.title article_title,
        m.nick_name author_name
        FROM
        reply r
        LEFT JOIN article a ON r.article_id = a.id
        LEFT JOIN menber m ON m.id = r.author_id
        WHERE 1 = 1
        AND parent_reply_id = #{id}
        AND (
            check_reply = 1
            <if test="authorId != null">
                or m.id = #{authorId}
            </if>
        )
    </select>

   /**
     * 父查询
     * @param page
     * @param param
     * @return
     */
    @Override
    @Cacheable(cacheResolver = BlogCacheConfig.CACHE_RESOLVER_NAME, key = "'findReplyTreeByParam_'+#param.articleId+'_'+#param.checkReply+'_'+#param.authorId+'_page_'+#page.current+'_'+#page.size")
    public Page<ReplyTree> findReplyTreeByParam(Page<ReplyTree> page, ReplyTree param) {
        Page<ReplyTree> result = mapper.findReplyResultByParam(page, param);
        getChildReply(new Page<>(1, 9999), param, result.getRecords());
        return result;
    }
    /**
     * 子查询
     * @param page
     * @param param
     * @param result
     */
    private void getChildReply(Page<ReplyTree> page, ReplyTree param, List<ReplyTree> result) {
        result.forEach(replyTree -> {
            Integer id = replyTree.getId();
            param.setParentReplyId(id);
            Page<ReplyTree> childReply = mapper.findReplyResultByParam(page, param);
            replyTree.setChildren(childReply.getRecords());
            getChildReply(page, param, childReply.getRecords());
        });
    }