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Techniques for partial rewrite of XPath queries in a relational database

  • US 7,386,568 B2
  • Filed: 11/08/2004
  • Issued: 06/10/2008
  • Est. Priority Date: 05/01/2003
  • Status: Active Grant
First Claim
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1. A computer-implemented method for processing a database command that includes section that specifies an operation to be performed on an unmappable path, which when executed by a computer causes the computer to perform the method which comprises the steps of:

  • splitting the unmappable path into a plurality of path fragments, wherein the plurality of path fragments includes a mappable path fragment and an unmappable path fragment; and

    replacing the section with a replacement section that specifies operations involving path fragments from the plurality of path fragments, wherein the operations include;

    a mappable operation whose target is defined by the mappable path fragment; and

    an unmappable operation whose target is defined by the unmappable path fragment.

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