8 June, 2005 at 05:28 Leave a comment

 

Project Archive: Harland is no longer an active project, but we still welcome contacts about this technology.

We are exploring the use and implementation of a flexible attribute storage model for persistent application data.  By exploiting regularities in attribute usage we seek to provide excellent performance while offering a level of flexibility that enables new kinds of applications.

Harland is

  • a persistent storage library for Java™ language programs
  • an early prototype for experimentation with our flexible storage model
 

Harland provides

  • persistent document objects that can hold application data in a dynamically-extensible set of named property values
  • a query facility for retrieving these objects based on the values of their properties
  • enforcement of application-supplied constraints
  • automatic manipulation of a relational database for storage and query processing without a fixed schema for the application data

Harland documents

Contact us

  • we want to hear about potential applications, challenges, and opportunities for this technology
  • please send questions and comments by email to harland-support@parc.xerox.com

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