错误:“缺少必填字段"在Solr的DIH配置文件中使用嵌入式实体 [英] Error: "Missing required field" using embedded entities in Solr's DIH Configuration File

问题描述

我正在尝试使用Solr的数据导入处理程序(DIH)从MySQL数据库导入多个表. DIH不会从第二个表详细信息"中导入数据.

I am trying to import multiple tables from a MySQL database using Solr's Data Import Handler (DIH). The DIH does not import data from the second table, 'detail'.

我的数据库配置文件是

<document>
    <entity name="item" pk="ListingId" query="SELECT * FROM item as item where listingid=360245270">
        <entity name="detail" pk="ListingId" query="SELECT Body FROM detail where listingid='${item.listingid}'">
            <field column="Body" name="Body" />
        </entity>
     </entity>
</document>

我监视了MySQL查询日志，执行的两个重要查询是:

I monitored the MySQL query log, and the two important queries that are executed are:

SELECT * FROM item as item where listingid=360245270

SELECT Body FROM listeditemdetail where listeditemdetail.listingid=''

很显然，配置文件中的'$ {item.listingid}'部分无法按要求工作.我为表名和列名尝试了不同的拼写，但无法正常工作.

Clearly, the '${item.listingid}' part in the configuration file is not working as required. I have tried different spellings for the table and column names but cannot get it to work.

推荐答案

(只需尝试)尝试删除主键并使用大写字母，例如:-

(Just a Try) Try removing the primary key and using the upper case e.g. :-

<document name="items">
    <entity name="item" query="SELECT * FROM item as item where listingid=360245270">
        <field column="LISTINGID" name="listingid" />
        <entity name="detail" query="SELECT Body FROM detail where listingid='${item.LISTINGID}'">
            <field column="Body" name="Body" />
        </entity>
    </entity>
</document>

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