Changes between Version 8 and Version 9 of ApertureDataSource


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Timestamp:
10/12/05 13:24:33 (19 years ago)
Author:
anonymous
Comment:

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  • ApertureDataSource

    v8 v9  
    5050scheme(s) it supports. 
    5151 
     52== Incremental Scanning == 
     53 
    5254The !AccessData instance used in !DataCrawlerBase maintains the information 
    5355about which objects have been scanned before. This instance is passed to the 
    54 !DataAccessor as this is the best class to do this detection. For example, 
    55 this allows the !HttpDataAccessor to use HTTP-specific functionality to let 
     56!DataAccessor as this is the best place to do this detection. First, this prevents object creation when the resource has not been modified since the last scan (DataAccessor returns null). Furthermore, this allows the !HttpDataAccessor to use HTTP-specific functionality to let 
    5657the webserver decide on whether the resource has changed since the last scan, 
    5758preventing an unchanged file from being transported to the crawling side in