[mapserver-commits] [mapserver/mapserver] 22dc08: OGR Spatialite: avoid useless CAST() in filter, an...

[GitHub]

  Branch: refs/heads/branch-7-0
  Home:   https://github.com/mapserver/mapserver
  Commit: 22dc081f1060ca40e0b209e7bb3e9aa0ca8b5ac3
      https://github.com/mapserver/mapserver/commit/22dc081f1060ca40e0b209e7bb3e9aa0ca8b5ac3
  Author: Even Rouault <even.rouault at spatialys.com>
  Date:   2016-12-01 (Thu, 01 Dec 2016)

  Changed paths:
    M mapogr.cpp
    M msautotest/wxs/data/db.sqlite
    A msautotest/wxs/expected/wfs_combined_filter.xml
    A msautotest/wxs/expected/wfs_ogr_native_sql_01_spatial_index_disabled.xml
    M msautotest/wxs/expected/wfs_ogr_native_sql_37.xml
    A msautotest/wxs/expected/wfs_ogr_native_sql_41.xml
    A msautotest/wxs/wfs_combined_filter.map
    M msautotest/wxs/wfs_ogr_native_sql.map

  Log Message:
  -----------
  OGR Spatialite: avoid useless CAST() in filter, and use join for spatial filtering.

SQLite cannot use attribute indexes if the WHERE clause use CAST(foo AS text) instead
of foo.

Rework the way spatial filtering is done to do a JOIN on the idx_table_geometry virtual
table instead of using the SpatialIndex virtual table. This will help the query planner
to use an attribute filter first when this is more relevant.

CREDITS: Funded by:
Regione Toscana - Settore Sistema Informativo Territoriale ed
Ambientale (CIG: 644544015A)