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How Can I access Voyager's Index and Search Results Outside of Voyager?

 In some circumstances, developers may need to access Voyager’s search results without having having direct access to Voyager. For example, they may need access to exported search results for use in another application, or they may need to integrate Voyager’s data directly with another application via a raw Solr query or an RSS/Atom feed.

Exporting Search Results 

You can export Voyager’s search results in several formats (CSV, SHP and XML) that can be opened and analyzed in other applications. You can also compress (zip) exported files to reduce file sizes.

How to Export Data
Select Tools > Export Result List from Voyager’s main menu bar

You can use Voyager’s UI to specify the result fields to include, the file format and whether or not to use data compression.

Because it relies on Voyager’s UI, exporting data is not accessible programmatically.

Using Raw Solr Queries

Voyager is built on Apache Solr (http://lucene.apache.org/solr/), which stores the data index, enables searching and responds to query requests made through its REST API.

How to Access the Solr REST API

    • Viewing the Raw Solr Query for the Current Search
      To see the raw query, go to Admin Options > Show Raw Query from the list of Admin Tools located below the filter list at the bottom right of the main Voyager UI. This will display the raw query in either JSON or XML formats.

    • Accessing the Solr Query API directly
      To access the API directly, go to http://localhost:8888/solr/v0/select?<parameters> 

Solr queries are the most flexible in terms of input parameter specification, output response type and content.

Solr query results require another application for analysis. For more information, see the Solr documentation at: http://lucene.apache.org/solr/documentation.html

Using Atom/RSS Feeds

Voyager’s built-in Atom and RSS feeds provide the same level of flexibility as do raw Solr queries, but return results exclusively in Atom or (Geo) RSS formats.

See Using RSS and Atom to Access a Voyager Index for information about feeds.

Feed formats allow a high degree of flexibly through programmatic access to Voyager’s search results.

Like Solr queries, RSS/Atom query results require another application for analysis . Unlike Solr queries, feed results are tied to specific schema which many, but not all, external applications will be able to read.

Usage Notes

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