Indexing documents using XML
In Solr, we can index XML messages to the update handler using the content-type tag: for example application/xml or text/xml. In the following subsections, we'll see how we can perform add, update, or delete commands.
Adding and updating documents
Solr provides an easy-to-use XML schema; this schema can be used to index data in Solr. The XML schema mainly contains the following elements:
<add>: This element is the parent element, and it tells Solr that we're adding a document for indexing<doc>: This element contains all the fields that are going to be indexed<field>: This element contains the content, name, and value of the field that is going to be indexed
For example, the sample XML document looks like the following code:
<add>
<doc>
<field name="songId">100000010</field>
<field name="songName">(Oh No) What You Got</field>
<field name="artistName">Justin...
