Changes between Version 5 and Version 6 of S3/S3ResourceFilter


Ignore:
Timestamp:
01/31/12 12:22:45 (13 years ago)
Author:
Dominic König
Comment:

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  • S3/S3ResourceFilter

    v5 v6  
    3232  - S3ResourceQuery instances represent virtual field filters ("vfltr")
    3333
     34It is possible to define S3ResourceQueries even for real fields. When extracting rows from the database table, those parts of a S3ResourceQuery which (only) concern real fields get automatically converted into Query instances and added to the DAL query. Furthermore, where S3ResourceQueries need joins, those get automatically added to the real query as well.
     35
    3436The process for the extraction of rows from the database is as follows:
    3537
    3638[[Image(rfilter_process.png)]]
    37 [[Image(rfilter_process.png)]]
     39
     40This process supports pagination (slicing), although that would necessarily not only retrieve the requested page from the database, but all records which match the DAL query. Therefore, the virtual filters should always only be the "last mile", while the DAL query reduces the number of candidates to the necessary minimum.
     41
     42== URL queries ==
     43
     44== Extending filters at the back-end ==