Scalable access to data in an arbitrarily large document

G - Physics – 06 – F

Patent

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Details

G06F 17/00 (2006.01) G06F 17/20 (2006.01)

Patent

CA 2504141

Techniques for accessing data that resides in a document on a computer- readable medium by a device with device resources of limited resource amount include determining usage for each portion of the document that consumes the device resources of a plurality of portions of the document. Each portion may be accessed independently of a different portion of the document. Based on the usage, a particular portion of the document is selected to cease consuming the device resources. The device resources consumed by the particular portion are released. The techniques allow a document-processing device with limited resources to scale up to process a large document that would otherwise exceed the available resources. This capability is an advantage when first inserting a large XML document, which cannot be fully manifested in available memory, as multiple loadable units into a database or other persistent store.

L'invention concerne des techniques permettant à un dispositif à ressources limitées d'accéder à des données contenues dans un document enregistré sur un support lisible par ordinateur, consistant à déterminer la fonction de chaque partie du document utilisant des ressources du dispositif. Ces techniques permettent d'accéder indépendamment à chaque partie du document et de sélectionner certaines parties du document sur la base de leur taux d'utilisation pour qu'elles cessent d'exploiter les ressources du dispositif. Les ressources libérées deviennent ainsi disponibles. Les techniques de l'invention permettent à un dispositif de traitement de documents à ressources limitées de traiter un document volumineux qui dans le cas contraire ne pourrait pas être traité par manque de ressources disponibles. Ces techniques constituent un avantage, car elles permettent de charger sous forme d'unités, un document XML volumineux qui ne pourrait pas être présenté dans son intégralité avec la mémoire disponible, dans une base de données ou tout autre dispositif de stockage persistant.

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