Hewlett-packard Development Company, L.p.

Hewlett-packard Company

W Kevin Wilkinson

Harumi Kuno

Kannan Govindarajan

Kei Yuasa

Kevin Smathers

Marie-Anne Neimat

To implement at least one functionality, a template having one or more logic components corresponding to the at least one functionality is provided. The template and a data collection are accessed to load the one or more logic components and data into a closure document. The closure document is provided to enable updating of data in the closure document using the one or more logic components.

Providing a functionality by loading logic into a document

A method of maintaining the consistency of cached data in a client-server database system. Three new locks--a cache lock, a pending lock and an out-of-date lock--are added to a two-lock concurrency control system. A new long-running envelope transaction holds a cache lock on each object cached by a given client. A working transaction of the client works only with the cached object until commit time. If a second client's working transaction acquires an 'X' lock on the object the cache lock is changed to a pending lock; if the transaction thereafter commits the pending lock is changed to an out-of-date lock. If the first client's working transaction thereafter attempts to commit, it waits for a pending lock to change; it aborts if it encounters an out-of-date lock; and otherwise it commits.

Method of maintaining consistency of cached data in a database system

Growing community of inventors

Sunnyvale, CA, United States of America

W Kevin Wilkinson