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  1. Spatial Information Systems
  2. SIS-305

Shapefile reader should be able to use .SHX (shapefile index)

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    Details

    • Type: Improvement
    • Status: Resolved
    • Priority: Minor
    • Resolution: Fixed
    • Affects Version/s: 0.7
    • Fix Version/s: 0.7
    • Component/s: Shapefile
    • Labels:

      Description

      Being able to read .SHX (shapefile index) that often accompany a shapefile is useful for two reasons :
      1) Currently when the JDBC driver runs an SQL request with a condition it go through the Shapefile and the DBase III file sequentially, from the start to the end. It costs a lot.
      Reading the shapefile index open a way to :

      • first read DBase III content for matching records,
      • then do direct access to the shapefile features and return them.

      2) If a shapefile is provided with a .SHX file and that we become able to INSERT or DELETE records on it, we are expected to update this index file.

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            • Assignee:
              mlebihan Marc Le Bihan
              Reporter:
              mlebihan Marc Le Bihan
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                Updated:
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