[英]solr index nested document
Does solr support nested documents? Solr是否支持嵌套文档? And is there a better way to achieve this sort of document?
有没有更好的方法来实现此类文档?
<doc>
<field name="name">Mr. Test</field>
<field name="case">
<field name="link">http://foo.com</field>
<field name="date">1-2-1234</filed>
<field name="title">My title</filed>
</field>
<field name="case">
<field name="link">http://foo.com/2/</field>
<field name="date">1-2-1234</filed>
<field name="title">My title 2</filed>
</field>
</doc>
What I have is a person that has been part of multiple cases. 我所拥有的人是多个案件的一部分。 Is this form of schema legal with solr?
这种形式的架构对solr合法吗? A different person can also be part of the same case.
不同的人也可以属于同一案件。 So it does look like a task for a relational database, but I'm using solr for this project.
因此,它看起来确实像是关系数据库的任务,但是我在该项目中使用solr。
No, Solr doesn't support that nested structure. 不,Solr不支持该嵌套结构。 Have a look at this other question too.
也看看其他问题 。
Newer versions of Solr provides support for Nested Documents 较新版本的Solr提供对嵌套文档的支持
Index this Json 索引这个杰森
[
{
"id": "1",
"title": "Solr adds block join support",
"content_type": "parentDocument",
"_childDocuments_": [
{
"id": "2",
"comments": "SolrCloud supports it too!"
}
]
},
{
"id": "3",
"title": "Lucene and Solr 4.5 is out",
"content_type": "parentDocument",
"_childDocuments_": [
{
"id": "4",
"comments": "Lots of new features"
}
]
}
]
Into schema.xml, u have to add all the fields which are getting used here that is "title","content_type","comments". 您必须在schema.xml中添加正在使用的所有字段,即“ title”,“ content_type”,“ comments”。 The parameter " childDocuments " is the parameter which solr takes care and with which it understands this is a child document and "content_type": "parentDocument" is the identifier for solr to understand that this is parent document.
参数“ childDocuments ”是solr会注意的参数,它可以理解为这是一个子文档,而“ content_type”:“ parentDocument”是solr的标识符,以了解这是父文档。 After indexing this Json if we query
在索引此Json后,如果我们查询
"*":"*"
We should see 4 documents in all. 我们应该总共看4个文件。 Now we can get parent or child documents with the help of Block and join query parsers .
现在,我们可以在Block的帮助下获取父文档或子文档, 并加入查询解析器 。 Try this queries
试试这个查询
http://localhost:8983/solr/collection_test/select?q={!child%20of=%22content_type:parentDocument%22}title:lucene
and this one 还有这个
http://localhost:8983/solr/collection_test/select?q={!parent%20which=%22content_type:parentDocument%22}comments:SolrCloud
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