在 5.x 中，默认情况下，多值存储在 solr 文档中 [英] multi values are getting stored in solr document by default in 5.x

问题描述

我对 Solr 很陌生，我有一个 schema.xml 文件，我在其中定义了所有字段.但这里的问题是字段存储为多个值.我在 Solr 4.x 中尝试过同样的方法，一切都按预期工作.我在这里遗漏了什么吗?

I am quite new to Solr and I have a schema.xml file where i have defined all the fields. But the problem here is the fields are storing as multiple values. I have tried the same in Solr 4.x and everything is working as expected. Am I missing something here?

<schema name="aem-solr" version="1.5">
<field name="body" type="text_general" indexed="true" stored="true" />
<field name="description" type="text_general" indexed="true" stored="true" />
<field name="contentType" type="text_general" indexed="true" stored="true" />
<field name="lastModified" type="date" indexed="true" stored="true" />
<field name="id" type="string" indexed="true" stored="true" multiValued="false" required="true" />
<field name="title" type="text_general" indexed="true" stored="true" />
<field name="url" type="text_general" indexed="true" stored="true" />
<field name="publishDate" type="tdate" indexed="true" stored="true" />
<field name="sling_resource_type" type="string" indexed="true" stored="true" multiValued="true" />
<field name="tags" type="text_general" indexed="true" stored="true" multiValued="true" />
<field name="text" type="text_general" indexed="true" stored="false" multiValued="true" />

虽然我使用的是 1.5 版架构，但所有内容都存储为多值，如下所示

Though i am using schema version 1.5 everything is storing as a multivalues as shown below

 {
    "id": "/content/geometrixx/en/company/bod",
    "title": [
      "Board of Directors"
    ],
    "url": [
      "/content/geometrixx/en/company/bod.html"
    ],
    "lastModified": [
      "2010-11-312T06:17:30Z"
    ],
    "contentType": [
      "page"
    ],
    "tags": [
      "Investor",
      "Business"
    ],
    "_version_": 1536322934890561500
  }

我尝试向字段添加 multiValued= false 属性，但仍然没有运气.我正在使用 SolrJ api 在 Solr 服务器中连接和创建文档.

I tried to add multiValued= false attribute to fields but still no luck. I am using SolrJ api for connection and creating documents in Solr server.

推荐答案

这可能是由于 5.x 默认使用托管架构 - 如果正确的 schema.xml 文件不存在时您第一次启动 Solr，创建的架构将接近(如果不是)无架构模式.

This might be caused by 5.x using Managed Schema by default - if the correct schema.xml file wasn't present when you started Solr for the first time, the created schema will be close to (if not) a Schemaless mode.

当 a 未在 solrconfig.xml 文件中显式声明时，Solr 隐式使用 ManagedIndexSchemaFactory，默认情况下它是可变的"并将架构信息保存在托管架构文件中.

When a is not explicitly declared in a solrconfig.xml file, Solr implicitly uses a ManagedIndexSchemaFactory, which is by default "mutable" and keeps schema information in a managed-schema file.

您可以通过更改模式工厂回到(或添加定义)solrconfig.xml中的ClassicIndexSchemaFactory.如果您想改用新的托管架构工厂，该链接还包含如何让 Solr 导入旧架构的说明:

You can revert to the old behavior by changing the Schema Factory back to (or add a definition for) ClassicIndexSchemaFactory in solrconfig.xml. The link also contains instruction on how you can make Solr import the old schema if you want to use the new Managed Schema factory instead:

如果您现有的 Solr 集合使用ClassicIndexSchemaFactory，并且您希望转换为使用托管schema，可以简化修改solrconfig.xml来指定使用的 ManagedIndexSchemaFactory.一旦 Solr 重新启动，它检测到 schema.xml 文件存在，但managedSchemaResourceName 文件(即:managed-schema")不存在，现有的 schema.xml 文件将重命名为 schema.xml.bak 并且内容被重新写入托管架构文件.

If you have an existing Solr collection that uses ClassicIndexSchemaFactory, and you wish to convert to use a managed schema, you can simplify modify the solrconfig.xml to specify the use of the ManagedIndexSchemaFactory. Once Solr is restarted and it detects that a schema.xml file exists, but the managedSchemaResourceName file (ie: "managed-schema") does not exist, the existing schema.xml file will be renamed to schema.xml.bak and the contents are re-written to the managed schema file.

这篇关于在 5.x 中，默认情况下，多值存储在 solr 文档中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！