1.6.4 uploading structured data store data with the data import Handler

1. Use DIH to upload structured data

Many search applications index structured data, such as relational databases. DIH provides a mechanism for storing and indexing structured data. apart from relational databases, SOLR can index content from HTTP, based on data sources such as RSS and atom feeds, e-mail libraries, and structured XML (fields can be generated using XPath)

For more information, see https://wiki.apache.org/solr/DataImportHandler.

1.1 concepts and terminology

Concepts and terms

The description of data import handler uses several similar terms, such as entity and processor.

Terms	Definition
Datasource	For a database, it is a DNS, and for an HTTP data source, it is a basic URL.
Entity	Conceptually, an object generates a group of documents. For an RDBMS data source, an object is a view or table.
Processor	An entity processor is used to extract content from the data source, convert the content, and add it to the index. A custom entity processor can inherit or replace the entity processor it supports.
Transformer	Each set of fields obtained by the object can be converted. this conversion process can be to modify a field, create a new field, or generate multiple lines/documents from one line. DIH has several built-in converters that can modify dates and filter HTML tags. you can also use public available interfaces to customize the converter.

 

 

 

 

 

 

 

1.2 configuration 1.2.1 sorting ing solrconfig. xml

 

1.6.4 uploading structured data store data with the data import Handler