Compass Project

Compass

Developer(s)	Shay Banon
Stable release	2.2.0 / April 7, 2009; 2 years ago (2009-04-07)
Written in	Java
Operating system	Cross-platform
Type	Search and index
License	Apache License 2.0
Website	http://www.compass-project.org

Compass is a free/open source Java Search Engine Framework built on top of Lucene created by Shay Banon.

Compass provides a simple API for working with Lucene (similar to API provided by ORM libraries). It has built in support for mapping different data "formats" into the search engine such as OSEM - Object to Search Engine Mapping (using annotations or xml), XSEM - XML to Search Engine Mapping (using simple xpath expressions), JSEM - JSON to Search Engine Mapping and the low level RSEM - Resource to Search Engine Mapping.

Compass integrates with ORM frameworks allowing for a single API to index all the content mapped by both the ORM and Compass. It also allows to automatically mirror changes done through the ORM API into the Search Engine. Compass has generic support for JPA and embedded support for Hibernate, OpenJPA, TopLink, and EclipseLink.

Distributed Lucene index (both pure Lucene and using Compass) support by allowing to store the Lucene index within Data Grid products such as GigaSpaces, Oracle Coherence Data Grid, and Terracotta. There is also support for distributed and collocated indexing and searching.

Compass provides extensive integration with Spring Framework including transaction management, Spring MVC, and Spring aspects for reflecting operations to the search engine.

See also

Free software portal

• Lucene

External links

• Compass Project homepage
• Lucene homepage
• Shay Banon. "The Birth Of Compass". http://www.kimchy.org/the_birth_of_compass/. 
• Shay Banon. "Shay Banon Blog". http://www.kimchy.org/.