sharpetronics/QGIS
1
0
Fork 0
mirror of https://github.com/qgis/QGIS.git synced 2025-03-04 00:30:59 -05:00
Code Issues Packages Projects Releases Wiki Activity

[WFS/OAPIF provider] Do not forward filter expression to Spatialite cache if it depends on a DateTime field

Browse Source 
Funded by Planet
This commit is contained in:
Even Rouault 2019-10-15 01:41:16 +02:00 committed by Nyall Dawson
parent 2bba185c76
commit bc8ee7ac32
1 changed files with 26 additions and 8 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

20
src/providers/wfs/qgsbackgroundcachedfeatureiterator.cpp
View File

@ -181,6 +181,9 @@ QgsBackgroundCachedFeatureIterator::QgsBackgroundCachedFeatureIterator(
QgsFeatureRequest QgsBackgroundCachedFeatureIterator::buildRequestCache( int genCounter )
{
QgsFeatureRequest requestCache;
const auto &fields = mShared->fields();
auto cacheDataProvider = mShared->cacheDataProvider();
if ( mRequest.filterType() == QgsFeatureRequest::FilterFid ||
mRequest.filterType() == QgsFeatureRequest::FilterFids )
@ -199,6 +202,21 @@ QgsFeatureRequest QgsBackgroundCachedFeatureIterator::buildRequestCache( int gen
// We cannot filter on geometry because the spatialite geometry is just
// a bounding box and not the actual geometry of the final feature
!mRequest.filterExpression()->needsGeometry() )
{
// We cannot forward expressions using dateTime fields, because they
// are stored as milliseconds since UTC epoch in the Spatialite DB.
bool hasDateTimeFieldInExpr = false;
const auto setColumns = mRequest.filterExpression()->referencedColumns();
for ( const auto columnName : setColumns )
{
int idx = fields.indexOf( columnName );
if ( idx >= 0 && fields[idx].type() == QVariant::DateTime )
{
hasDateTimeFieldInExpr = true;
break;
}
}
if ( !hasDateTimeFieldInExpr )
{
// Transfer and transform context
requestCache.setFilterExpression( mRequest.filterExpression()->expression() );
@ -210,6 +228,7 @@ QgsFeatureRequest QgsBackgroundCachedFeatureIterator::buildRequestCache( int gen
}
requestCache.setExpressionContext( ctx );
}
}
if ( genCounter >= 0 )
{
requestCache.combineFilterExpression( QString( QgsBackgroundCachedFeatureIteratorConstants::FIELD_GEN_COUNTER + " <= %1" ).arg( genCounter ) );
@ -224,7 +243,6 @@ QgsFeatureRequest QgsBackgroundCachedFeatureIterator::buildRequestCache( int gen
mFetchGeometry = true;
}
const auto &fields = mShared->fields();
if ( mRequest.flags() & QgsFeatureRequest::SubsetOfAttributes )
{
QgsFields dataProviderFields = cacheDataProvider->fields();