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| Implementing Placeless Documents With Java |
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posted by Editor on Monday June 24, @12:42PM
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Harland is a Java API developed by Xerox PARC that provides a persistent attribute store for document-based applications written in Java. Harland works in combination with a relational database by providing a layer on top of the relational model to simplify attribute storage and retrieval, while retaining the performance and aspects of data structuring that make RDBs so powerful. Document properties are statements about documents that make sense to the user, and affect what they can do with the documents. Harland is the latest implementation of Placeless Documents, an architecture developed by Xerox in which documents are organized and managed according to their properties, rather than according to their location, as in traditional hierarchical file systems (see online presentation). A 90-day trial version of Harland can be downloaded.
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